Fundies.
English

Segment disclosures

Company overview

OASIS PETROLEUM INC.

Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.

Revenue · Reported segment facts

125 dimension combinations 744 retained observations 17 reported periods Partial retained history

Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.

Operating Segments · Crude Oiland Natural Gas Services · Midstream Services

Consolidated Entities · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-3173028000 USD20190301Open filing evidence
2017-01-01 – 2017-12-3137369000 USD20190301Open filing evidence

Operating Segments · Equipment Rental Services · Well Servicing

Consolidated Entities · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:EquipmentRentalServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-314455000 USD20190301Open filing evidence
2017-01-01 – 2017-12-313525000 USD20190301Open filing evidence

Operating Segments · Hydraulic Fracturing Services · Well Servicing

Consolidated Entities · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:HydraulicFracturingServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-3156620000 USD20190301Open filing evidence
2017-01-01 – 2017-12-3149266000 USD20190301Open filing evidence

Operating Segments · Purchased Gas Sales · Midstream Services

Consolidated Entities · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:PurchasedGasSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-311464000 USD20190301Open filing evidence
2017-01-01 – 2017-12-310 USD20190301Open filing evidence

Operating Segments · Purchased Oil Sales · Midstream Services

Consolidated Entities · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-313633000 USD20190301Open filing evidence
2017-01-01 – 2017-12-310 USD20190301Open filing evidence

Operating Segments · Water Services · Midstream Services

Consolidated Entities · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:WaterServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-3146012000 USD20190301Open filing evidence
2017-01-01 – 2017-12-3135383000 USD20190301Open filing evidence

Operating Segments · Midstream Services

Consolidated Entities · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-31124137000 USD20190301Open filing evidence
2017-01-01 – 2017-12-3172752000 USD20190301Open filing evidence

Operating Segments · Well Servicing

Consolidated Entities · Statement Business Segments

Source dimensions srt:ConsolidatedEntitiesAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-12-3161075000 USD20190301Open filing evidence
2017-01-01 – 2017-12-3152791000 USD20190301Open filing evidence

Intersegment Elimination · Exploration And Production

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-300 USD20210805Open filing evidence
2021-01-01 – 2021-06-300 USD20210805Open filing evidence
2020-04-01 – 2020-06-300 USD20210805Open filing evidence
2020-01-01 – 2020-06-300 USD20210805Open filing evidence

Intersegment Elimination · Midstream Services

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30-42090000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30-83446000 USD20210805Open filing evidence
2020-04-01 – 2020-06-30-37195000 USD20210805Open filing evidence
2020-01-01 – 2020-06-30-105739000 USD20210805Open filing evidence

Material Reconciling Items · Exploration And Production

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:MaterialReconcilingItemsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-310 USD20210308Open filing evidence
2020-01-01 – 2020-11-190 USD20210308Open filing evidence
2020-07-01 – 2020-09-300 USD20201105Open filing evidence
2020-01-01 – 2020-09-300 USD20201105Open filing evidence
2020-04-01 – 2020-06-300 USD20200805Open filing evidence
2020-01-01 – 2020-06-300 USD20200805Open filing evidence
2019-01-01 – 2019-12-310 USD20210308Open filing evidence
2019-07-01 – 2019-09-300 USD20201105Open filing evidence
2019-01-01 – 2019-09-300 USD20201105Open filing evidence
2019-04-01 – 2019-06-300 USD20200805Open filing evidence
2019-01-01 – 2019-06-300 USD20200805Open filing evidence
2019-01-01 – 2019-03-310 USD20190508Open filing evidence
2018-01-01 – 2018-12-310 USD20210308Open filing evidence
2018-07-01 – 2018-09-300 USD20181106Open filing evidence
2018-01-01 – 2018-09-300 USD20181106Open filing evidence
2018-04-01 – 2018-06-300 USD20190809Open filing evidence
2018-01-01 – 2018-06-300 USD20190809Open filing evidence
2018-01-01 – 2018-03-310 USD20190508Open filing evidence
2017-01-01 – 2017-12-310 USD20200227Open filing evidence

Material Reconciling Items · Midstream Services

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:MaterialReconcilingItemsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3141356000 USD20210507Open filing evidence
2020-04-01 – 2020-06-3037195000 USD20200805Open filing evidence
2020-01-01 – 2020-06-30105739000 USD20200805Open filing evidence
2020-01-01 – 2020-03-3168544000 USD20210507Open filing evidence
2019-04-01 – 2019-06-3067844000 USD20200805Open filing evidence
2019-01-01 – 2019-06-30126405000 USD20200805Open filing evidence
2019-01-01 – 2019-03-3158561000 USD20200518Open filing evidence
2018-01-01 – 2018-12-31162505000 USD20190301Open filing evidence
2018-07-01 – 2018-09-3042745000 USD20181106Open filing evidence
2018-01-01 – 2018-09-30119095000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3039710000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3076350000 USD20180807Open filing evidence
2018-01-01 – 2018-03-3136640000 USD20190508Open filing evidence
2017-01-01 – 2017-12-31113047000 USD20190301Open filing evidence

Material Reconciling Items · Well Servicing

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:MaterialReconcilingItemsMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-3179686000 USD20200227Open filing evidence
2019-01-01 – 2019-03-3122173000 USD20190508Open filing evidence
2018-01-01 – 2018-12-31144544000 USD20200227Open filing evidence
2018-07-01 – 2018-09-3040177000 USD20181106Open filing evidence
2018-01-01 – 2018-09-30114898000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3041418000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3074721000 USD20180807Open filing evidence
2018-01-01 – 2018-03-3133302000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3195345000 USD20200227Open filing evidence

Operating Segments · External Customers · Exploration And Production

Consolidation Items · Major Customers · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:MajorCustomersAxis=oas:ExternalCustomersMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3193794000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19775888000 USD20210308Open filing evidence

Operating Segments · Crude Oiland Natural Gas Services · Midstream Services

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-3124664000 USD20190508Open filing evidence
2018-07-01 – 2018-09-3018188000 USD20181106Open filing evidence
2018-01-01 – 2018-09-3054124000 USD20181106Open filing evidence
2018-01-01 – 2018-03-3118029000 USD20190508Open filing evidence

Operating Segments · Equipment Rental Services · Well Servicing

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:EquipmentRentalServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-31683000 USD20190508Open filing evidence
2018-07-01 – 2018-09-301277000 USD20181106Open filing evidence
2018-01-01 – 2018-09-303543000 USD20181106Open filing evidence
2018-01-01 – 2018-03-311160000 USD20190508Open filing evidence

Operating Segments · Hydraulic Fracturing Services · Well Servicing

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:HydraulicFracturingServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-319775000 USD20190508Open filing evidence
2018-07-01 – 2018-09-3014985000 USD20181106Open filing evidence
2018-01-01 – 2018-09-3042801000 USD20181106Open filing evidence
2018-01-01 – 2018-03-3110426000 USD20190508Open filing evidence

Operating Segments · Natural Gasand NGL Services · Midstream Services

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:NaturalGasandNGLServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-3112797000 USD20190508Open filing evidence
2018-01-01 – 2018-03-310 USD20190508Open filing evidence

Operating Segments · Natural Gas Liquid Services · Exploration And Production

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:NaturalGasLiquidServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30309000 USD20201105Open filing evidence
2020-01-01 – 2020-09-306686000 USD20201105Open filing evidence
2019-07-01 – 2019-09-308898000 USD20201105Open filing evidence
2019-01-01 – 2019-09-3030795000 USD20201105Open filing evidence
2019-04-01 – 2019-06-3019293000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3038358000 USD20190809Open filing evidence
2019-01-01 – 2019-03-3123210000 USD20190508Open filing evidence
2018-04-01 – 2018-06-3011608000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3024931000 USD20190809Open filing evidence
2018-01-01 – 2018-03-3113323000 USD20190508Open filing evidence

Operating Segments · Oil Production · Exploration And Production

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:OilProductionMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2019-04-01 – 2019-06-30327977000 USD20190809Open filing evidence
2019-01-01 – 2019-06-30646098000 USD20190809Open filing evidence
2019-01-01 – 2019-03-31318120000 USD20190508Open filing evidence
2018-04-01 – 2018-06-30363182000 USD20190809Open filing evidence
2018-01-01 – 2018-06-30689492000 USD20190809Open filing evidence
2018-01-01 – 2018-03-31326310000 USD20190508Open filing evidence

Operating Segments · Producedand Flowback Water Service · Midstream Services

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:ProducedandFlowbackWaterServiceMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-319033000 USD20190508Open filing evidence
2018-01-01 – 2018-03-318876000 USD20190508Open filing evidence

Operating Segments · Purchased Gas Sales · Exploration And Production

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:PurchasedGasSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-311335000 USD20190508Open filing evidence
2018-01-01 – 2018-03-3149000 USD20190508Open filing evidence

Operating Segments · Purchased Oil Sales · Exploration And Production

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-316771000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19160420000 USD20210308Open filing evidence
2020-07-01 – 2020-09-3035442000 USD20201105Open filing evidence
2020-01-01 – 2020-09-30144719000 USD20201105Open filing evidence
2019-01-01 – 2019-12-31401554000 USD20210308Open filing evidence
2019-07-01 – 2019-09-3077018000 USD20201105Open filing evidence
2019-01-01 – 2019-09-30330594000 USD20201105Open filing evidence
2019-01-01 – 2019-03-31147136000 USD20190508Open filing evidence
2018-01-01 – 2018-12-31540633000 USD20210308Open filing evidence
2018-01-01 – 2018-03-3167660000 USD20190508Open filing evidence

Operating Segments · Purchased Oil Sales · Midstream Services

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-301838000 USD20181106Open filing evidence
2018-01-01 – 2018-09-305212000 USD20181106Open filing evidence

Operating Segments · Total Midstream Products · Midstream Services

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:TotalMidstreamProductsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-3114324000 USD20190508Open filing evidence
2018-01-01 – 2018-03-311017000 USD20190508Open filing evidence

Operating Segments · Total Midstream Services Productand Services Member · Midstream Services

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:TotalMidstreamServicesProductandServicesMemberMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-3133697000 USD20190508Open filing evidence
2018-01-01 – 2018-03-3126905000 USD20190508Open filing evidence

Operating Segments · Water Services · Midstream Services

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:WaterServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-03-311527000 USD20190508Open filing evidence
2018-07-01 – 2018-09-3012999000 USD20181106Open filing evidence
2018-01-01 – 2018-09-3034327000 USD20181106Open filing evidence
2018-01-01 – 2018-03-311017000 USD20190508Open filing evidence

Operating Segments · Natural Gas Production · Exploration And Production

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:NaturalGasProductionMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2019-04-01 – 2019-06-309734000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3041330000 USD20190809Open filing evidence
2019-01-01 – 2019-03-3127452000 USD20190508Open filing evidence
2018-04-01 – 2018-06-3023059000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3050021000 USD20190809Open filing evidence
2018-01-01 – 2018-03-3126962000 USD20190508Open filing evidence

Operating Segments · Exploration And Production

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30335327000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30947013000 USD20211104Open filing evidence
2021-04-01 – 2021-06-30328987000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30611685000 USD20210805Open filing evidence
2020-11-20 – 2020-12-3193794000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19775888000 USD20210308Open filing evidence
2020-07-01 – 2020-09-30215636000 USD20211104Open filing evidence
2020-01-01 – 2020-09-30668849000 USD20211104Open filing evidence
2020-04-01 – 2020-06-30121826000 USD20210805Open filing evidence
2020-01-01 – 2020-06-30453213000 USD20210805Open filing evidence
2019-01-01 – 2019-12-311859506000 RestatedUSD20210308Open filing evidence
2019-07-01 – 2019-09-30432720000 USD20201105Open filing evidence
2019-01-01 – 2019-09-301438235000 USD20201105Open filing evidence
2019-04-01 – 2019-06-30477804000 RestatedUSD20200805Open filing evidence
2019-01-01 – 2019-06-301005515000 RestatedUSD20200805Open filing evidence
2019-01-01 – 2019-03-31517253000 USD20190508Open filing evidence
2018-01-01 – 2018-12-312197810000 RestatedUSD20210308Open filing evidence
2018-07-01 – 2018-09-30497161000 USD20181106Open filing evidence
2018-01-01 – 2018-09-301328994000 USD20181106Open filing evidence
2018-04-01 – 2018-06-30525557000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-06-30959861000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-03-31434304000 USD20190508Open filing evidence
2017-01-01 – 2017-12-311168176000 USD20200227Open filing evidence

Operating Segments · Exploration And Production · Natural Gas And Natural Gas Liquids

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:NaturalGasAndNaturalGasLiquidsMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-3024525000 USD20201105Open filing evidence
2020-01-01 – 2020-09-3063631000 USD20201105Open filing evidence
2019-07-01 – 2019-09-3025906000 USD20201105Open filing evidence
2019-01-01 – 2019-09-30105594000 USD20201105Open filing evidence

Operating Segments · Exploration And Production · Natural Gas Liquid Services

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:NaturalGasLiquidServicesMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-31215000 USD20210308Open filing evidence
2020-01-01 – 2020-11-196836000 USD20210308Open filing evidence
2019-01-01 – 2019-12-3141974000 USD20210308Open filing evidence
2018-01-01 – 2018-12-3161075000 USD20210308Open filing evidence

Operating Segments · Exploration And Production · Oil Production

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:OilProductionMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3169075000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19522812000 USD20210308Open filing evidence
2020-07-01 – 2020-09-30155052000 USD20201105Open filing evidence
2020-01-01 – 2020-09-30448904000 USD20201105Open filing evidence
2019-01-01 – 2019-12-311261413000 USD20210308Open filing evidence
2019-07-01 – 2019-09-30318564000 USD20201105Open filing evidence
2019-01-01 – 2019-09-30964662000 USD20201105Open filing evidence
2018-01-01 – 2018-12-311425409000 USD20210308Open filing evidence

Operating Segments · Exploration And Production · Purchased Gas Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:PurchasedGasSalesMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-31366000 USD20210308Open filing evidence
2020-01-01 – 2020-11-195047000 USD20210308Open filing evidence
2020-07-01 – 2020-09-30308000 USD20201105Open filing evidence
2020-01-01 – 2020-09-304909000 USD20201105Open filing evidence
2019-01-01 – 2019-12-317207000 USD20210308Open filing evidence
2019-07-01 – 2019-09-302334000 USD20201105Open filing evidence
2019-01-01 – 2019-09-306590000 USD20201105Open filing evidence
2018-01-01 – 2018-12-316078000 USD20210308Open filing evidence

Operating Segments · Exploration And Production · Natural Gas Production

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=us-gaap:NaturalGasProductionMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3117367000 USD20210308Open filing evidence
2020-01-01 – 2020-11-1980773000 USD20210308Open filing evidence
2019-01-01 – 2019-12-31147358000 USD20210308Open filing evidence
2018-01-01 – 2018-12-31164615000 USD20210308Open filing evidence

Operating Segments · Midstream Services

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3126121000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19187531000 USD20210308Open filing evidence
2019-01-01 – 2019-12-31212238000 USD20210308Open filing evidence
2019-01-01 – 2019-03-3148021000 USD20190508Open filing evidence
2018-01-01 – 2018-12-31124137000 USD20210308Open filing evidence
2018-07-01 – 2018-09-3033025000 USD20181106Open filing evidence
2018-01-01 – 2018-09-3093663000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3032717000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3060639000 USD20180807Open filing evidence
2018-01-01 – 2018-03-3127922000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3172752000 USD20190301Open filing evidence

Operating Segments · Midstream Services · External Customers

Consolidation Items · Statement Business Segments · Major Customers

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:MajorCustomersAxis=oas:ExternalCustomersMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3126121000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19187531000 USD20210308Open filing evidence

Operating Segments · Midstream Services · Crude Oiland Natural Gas Services

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-318912000 USD20210308Open filing evidence
2020-01-01 – 2020-11-1982466000 USD20210308Open filing evidence
2019-01-01 – 2019-12-3195399000 USD20210308Open filing evidence
2018-01-01 – 2018-12-3173028000 USD20210308Open filing evidence

Operating Segments · Midstream Services · Natural Gasand NGL Services

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:NaturalGasandNGLServicesMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3113150000 USD20210308Open filing evidence
2020-01-01 – 2020-11-1948883000 USD20210308Open filing evidence
2019-01-01 – 2019-12-3170746000 USD20210308Open filing evidence
2018-01-01 – 2018-12-311464000 USD20210308Open filing evidence

Operating Segments · Midstream Services · Producedand Flowback Water Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:ProducedandFlowbackWaterServiceMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-313512000 USD20210308Open filing evidence
2020-01-01 – 2020-11-1931932000 USD20210308Open filing evidence
2019-01-01 – 2019-12-3140534000 USD20210308Open filing evidence
2018-01-01 – 2018-12-3137791000 USD20210308Open filing evidence

Operating Segments · Midstream Services · Purchased Oil Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3190000 USD20210308Open filing evidence
2020-01-01 – 2020-11-1920900000 USD20210308Open filing evidence
2019-01-01 – 2019-12-3130000 USD20210308Open filing evidence
2018-01-01 – 2018-12-313633000 USD20210308Open filing evidence

Operating Segments · Midstream Services · Total Midstream Products

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:TotalMidstreamProductsMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3113697000 USD20210308Open filing evidence
2020-01-01 – 2020-11-1973133000 USD20210308Open filing evidence
2019-01-01 – 2019-12-3176305000 USD20210308Open filing evidence
2018-01-01 – 2018-12-3113318000 USD20210308Open filing evidence

Operating Segments · Midstream Services · Total Midstream Services Productand Services Member

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:TotalMidstreamServicesProductandServicesMemberMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3112424000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19114398000 USD20210308Open filing evidence
2019-01-01 – 2019-12-31135933000 USD20210308Open filing evidence
2018-01-01 – 2018-12-31110819000 USD20210308Open filing evidence

Operating Segments · Midstream Services · Water Services

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:WaterServicesMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-31457000 USD20210308Open filing evidence
2020-01-01 – 2020-11-193350000 USD20210308Open filing evidence
2019-01-01 – 2019-12-315529000 USD20210308Open filing evidence
2018-01-01 – 2018-12-318221000 USD20210308Open filing evidence

Operating Segments · Well Servicing

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-3141974000 USD20200227Open filing evidence
2019-01-01 – 2019-03-3110458000 USD20190508Open filing evidence
2018-01-01 – 2018-12-3161075000 USD20200227Open filing evidence
2018-07-01 – 2018-09-3016262000 USD20181106Open filing evidence
2018-01-01 – 2018-09-3046344000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3018496000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3030082000 USD20180807Open filing evidence
2018-01-01 – 2018-03-3111586000 USD20190508Open filing evidence
2017-01-01 – 2017-12-3152791000 USD20200227Open filing evidence

Crude Oiland Natural Gas Services · Midstream Services

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3017907000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3035936000 USD20180807Open filing evidence

Crude Oiland Natural Gas Services · Midstream Services · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-3195399000 USD20200227Open filing evidence
2018-01-01 – 2018-12-3173028000 USD20200227Open filing evidence
2017-01-01 – 2017-12-3137369000 USD20200227Open filing evidence

Equipment Rental Services · Well Servicing

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:EquipmentRentalServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-301106000 USD20180807Open filing evidence
2018-01-01 – 2018-06-302266000 USD20180807Open filing evidence

Equipment Rental Services · Well Servicing · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:EquipmentRentalServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-312862000 USD20200227Open filing evidence
2019-07-01 – 2019-09-30670000 USD20191106Open filing evidence
2019-01-01 – 2019-09-302164000 USD20191106Open filing evidence
2018-01-01 – 2018-12-314455000 USD20200227Open filing evidence
2018-07-01 – 2018-09-301277000 USD20191106Open filing evidence
2018-01-01 – 2018-09-303543000 USD20191106Open filing evidence
2017-01-01 – 2017-12-313525000 USD20200227Open filing evidence

Hydraulic Fracturing Services · Well Servicing

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:HydraulicFracturingServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3017390000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3027816000 USD20180807Open filing evidence

Hydraulic Fracturing Services · Well Servicing · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:HydraulicFracturingServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-3139112000 USD20200227Open filing evidence
2019-07-01 – 2019-09-308228000 USD20191106Open filing evidence
2019-01-01 – 2019-09-3028631000 USD20191106Open filing evidence
2018-01-01 – 2018-12-3156620000 USD20200227Open filing evidence
2018-07-01 – 2018-09-3014985000 USD20191106Open filing evidence
2018-01-01 – 2018-09-3042801000 USD20191106Open filing evidence
2017-01-01 – 2017-12-3149266000 USD20200227Open filing evidence

Natural Gas1 · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:NaturalGas1Member;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3075905000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30184046000 USD20211104Open filing evidence
2020-07-01 – 2020-09-3024525000 USD20211104Open filing evidence
2020-01-01 – 2020-09-3063631000 USD20211104Open filing evidence

Natural Gas And Natural Gas Liquids · Operating Segments · Exploration And Production

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:NaturalGasAndNaturalGasLiquidsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3012771000 USD20200805Open filing evidence
2020-01-01 – 2020-06-3039106000 USD20200805Open filing evidence
2019-04-01 – 2019-06-3029027000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3079688000 USD20200805Open filing evidence

Natural Gas And Natural Gas Liquids · Exploration And Production · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:NaturalGasAndNaturalGasLiquidsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-3126335000 USD20200518Open filing evidence
2019-01-01 – 2019-03-3150662000 USD20200518Open filing evidence

Natural Gasand NGL Services · Midstream Services · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:NaturalGasandNGLServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-3116039000 USD20200518Open filing evidence
2019-01-01 – 2019-03-3112797000 USD20200518Open filing evidence

Natural Gas Liquid Services · Operating Segments · Exploration And Production

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:NaturalGasLiquidServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30396000 USD20200805Open filing evidence
2020-01-01 – 2020-06-306377000 USD20200805Open filing evidence
2019-04-01 – 2019-06-3011439000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3021897000 USD20200805Open filing evidence

Natural Gas Liquid Services · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:NaturalGasLiquidServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30121000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30542000 USD20211104Open filing evidence
2020-07-01 – 2020-09-30309000 USD20211104Open filing evidence
2020-01-01 – 2020-09-306686000 USD20211104Open filing evidence
2018-01-01 – 2018-12-3151520000 USD20190301Open filing evidence
2018-07-01 – 2018-09-3013932000 USD20181106Open filing evidence
2018-01-01 – 2018-09-3038863000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3011608000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3024931000 USD20180807Open filing evidence
2017-01-01 – 2017-12-3142005000 USD20190301Open filing evidence

Oil Production · Operating Segments · Exploration And Production

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:OilProductionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3081059000 USD20200805Open filing evidence
2020-01-01 – 2020-06-30293852000 USD20200805Open filing evidence
2019-04-01 – 2019-06-30327977000 USD20200805Open filing evidence
2019-01-01 – 2019-06-30646098000 USD20200805Open filing evidence

Oil Production · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:OilProductionMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31185818000 USD20210507Open filing evidence
2020-01-01 – 2020-03-31212793000 USD20210507Open filing evidence
2019-01-01 – 2019-12-311261413000 USD20200227Open filing evidence
2018-01-01 – 2018-12-311425409000 USD20200227Open filing evidence
2018-07-01 – 2018-09-30412530000 USD20181106Open filing evidence
2018-01-01 – 2018-09-301097171000 USD20181106Open filing evidence
2018-04-01 – 2018-06-30361254000 USD20180807Open filing evidence
2018-01-01 – 2018-06-30684640000 USD20180807Open filing evidence
2017-01-01 – 2017-12-31912806000 USD20200227Open filing evidence

Producedand Flowback Water Service · Midstream Services

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:ProducedandFlowbackWaterServiceMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-317410000 USD20210507Open filing evidence
2020-01-01 – 2020-03-3111251000 USD20210507Open filing evidence

Producedand Flowback Water Service · Midstream Services · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:ProducedandFlowbackWaterServiceMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-3140534000 USD20200227Open filing evidence
2019-07-01 – 2019-09-3010803000 USD20191106Open filing evidence
2019-01-01 – 2019-09-3029309000 USD20191106Open filing evidence
2018-01-01 – 2018-12-3137791000 USD20200227Open filing evidence
2018-07-01 – 2018-09-309985000 USD20191106Open filing evidence
2018-01-01 – 2018-09-3027919000 USD20191106Open filing evidence
2017-01-01 – 2017-12-3130727000 USD20200227Open filing evidence

Purchased Gas Sales · Operating Segments · Exploration And Production

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:PurchasedGasSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-304081000 USD20200805Open filing evidence
2020-01-01 – 2020-06-304602000 USD20200805Open filing evidence
2019-04-01 – 2019-06-302920000 USD20200805Open filing evidence
2019-01-01 – 2019-06-304255000 USD20200805Open filing evidence
2018-04-01 – 2018-06-30496000 USD20190809Open filing evidence
2018-01-01 – 2018-06-30545000 USD20190809Open filing evidence

Purchased Gas Sales · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:PurchasedGasSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-308000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30362000 USD20211104Open filing evidence
2021-04-01 – 2021-06-3060000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30354000 USD20210805Open filing evidence
2021-01-01 – 2021-03-31295000 USD20210507Open filing evidence
2020-07-01 – 2020-09-30308000 USD20211104Open filing evidence
2020-01-01 – 2020-09-304909000 USD20211104Open filing evidence
2020-04-01 – 2020-06-304081000 USD20210805Open filing evidence
2020-01-01 – 2020-06-304602000 USD20210805Open filing evidence
2020-01-01 – 2020-03-31521000 USD20210507Open filing evidence
2019-01-01 – 2019-12-317207000 USD20200227Open filing evidence
2018-01-01 – 2018-12-316078000 USD20200227Open filing evidence
2018-07-01 – 2018-09-301616000 USD20181106Open filing evidence
2018-01-01 – 2018-09-302161000 USD20181106Open filing evidence
2018-04-01 – 2018-06-30496000 USD20180807Open filing evidence
2018-01-01 – 2018-06-30545000 USD20180807Open filing evidence
2017-01-01 – 2017-12-311211000 USD20200227Open filing evidence

Purchased Gas Sales · Exploration And Production · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:PurchasedGasSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-31521000 USD20200518Open filing evidence
2019-01-01 – 2019-03-311335000 USD20200518Open filing evidence

Purchased Oil Sales · Operating Segments · Exploration And Production

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3023519000 USD20200805Open filing evidence
2020-01-01 – 2020-06-30109276000 USD20200805Open filing evidence
2019-04-01 – 2019-06-30106441000 USD20200805Open filing evidence
2019-01-01 – 2019-06-30253577000 USD20200805Open filing evidence
2018-04-01 – 2018-06-30127212000 USD20190809Open filing evidence
2018-01-01 – 2018-06-30194872000 USD20190809Open filing evidence

Purchased Oil Sales · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3053562000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30163785000 USD20211104Open filing evidence
2021-04-01 – 2021-06-3073505000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30110222000 USD20210805Open filing evidence
2020-07-01 – 2020-09-3035442000 USD20211104Open filing evidence
2020-01-01 – 2020-09-30144719000 USD20211104Open filing evidence
2020-04-01 – 2020-06-3023519000 USD20210805Open filing evidence
2020-01-01 – 2020-06-30109276000 USD20210805Open filing evidence
2019-01-01 – 2019-12-31401554000 USD20200227Open filing evidence
2018-01-01 – 2018-12-31540633000 USD20200227Open filing evidence
2018-07-01 – 2018-09-3042902000 USD20181106Open filing evidence
2018-01-01 – 2018-09-30114598000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3053707000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3071695000 USD20180807Open filing evidence
2017-01-01 – 2017-12-31132331000 USD20200227Open filing evidence

Purchased Oil Sales · Midstream Services

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-303375000 USD20180807Open filing evidence
2018-01-01 – 2018-06-303375000 USD20180807Open filing evidence

Purchased Oil Sales · Midstream Services · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-3130000 USD20200227Open filing evidence
2019-04-01 – 2019-06-3028000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3028000 USD20190809Open filing evidence
2018-01-01 – 2018-12-313633000 USD20200227Open filing evidence
2018-04-01 – 2018-06-30356000 USD20190809Open filing evidence
2018-01-01 – 2018-06-30356000 USD20190809Open filing evidence
2017-01-01 – 2017-12-310 USD20200227Open filing evidence

Total Midstream Products · Midstream Services · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:TotalMidstreamProductsMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3014381000 USD20200805Open filing evidence
2020-01-01 – 2020-06-3032854000 USD20200805Open filing evidence
2020-01-01 – 2020-03-3118239000 USD20200518Open filing evidence
2019-01-01 – 2019-12-3176305000 USD20200227Open filing evidence
2019-07-01 – 2019-09-3017567000 USD20191106Open filing evidence
2019-01-01 – 2019-09-3051147000 USD20191106Open filing evidence
2019-04-01 – 2019-06-3019253000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3033578000 USD20200805Open filing evidence
2019-01-01 – 2019-03-3114324000 USD20200518Open filing evidence
2018-01-01 – 2018-12-3113318000 USD20200227Open filing evidence
2018-07-01 – 2018-09-304852000 USD20191106Open filing evidence
2018-01-01 – 2018-09-308601000 USD20191106Open filing evidence
2017-01-01 – 2017-12-314656000 USD20200227Open filing evidence

Total Midstream Services Productand Services Member · Midstream Services

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:TotalMidstreamServicesProductandServicesMemberMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3129635000 USD20210507Open filing evidence
2020-01-01 – 2020-03-3138172000 USD20210507Open filing evidence

Total Midstream Services Productand Services Member · Midstream Services · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:TotalMidstreamServicesProductandServicesMemberMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3030145000 USD20200805Open filing evidence
2020-01-01 – 2020-06-3068083000 USD20200805Open filing evidence
2019-01-01 – 2019-12-31135933000 USD20200227Open filing evidence
2019-07-01 – 2019-09-3032456000 USD20191106Open filing evidence
2019-01-01 – 2019-09-3098498000 USD20191106Open filing evidence
2019-04-01 – 2019-06-3032348000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3066044000 USD20200805Open filing evidence
2018-01-01 – 2018-12-31110819000 USD20200227Open filing evidence
2018-07-01 – 2018-09-3028173000 USD20191106Open filing evidence
2018-01-01 – 2018-09-3082043000 USD20191106Open filing evidence
2018-04-01 – 2018-06-3026965000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3053870000 USD20190809Open filing evidence
2017-01-01 – 2017-12-3168096000 USD20200227Open filing evidence

Water Services · Midstream Services

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=oas:WaterServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3011435000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3021328000 USD20180807Open filing evidence

Water Services · Midstream Services · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=oas:WaterServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30294000 USD20200805Open filing evidence
2020-01-01 – 2020-06-302494000 USD20200805Open filing evidence
2019-01-01 – 2019-12-315529000 USD20200227Open filing evidence
2019-04-01 – 2019-06-301906000 USD20200805Open filing evidence
2019-01-01 – 2019-06-303434000 USD20200805Open filing evidence
2018-01-01 – 2018-12-318221000 USD20200227Open filing evidence

Natural Gas Production · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:NaturalGasProductionMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-31147358000 USD20200227Open filing evidence
2018-01-01 – 2018-12-31164615000 RestatedUSD20200227Open filing evidence
2018-07-01 – 2018-09-3026181000 USD20181106Open filing evidence
2018-01-01 – 2018-09-3076201000 USD20181106Open filing evidence
2018-04-01 – 2018-06-3023059000 USD20180807Open filing evidence
2018-01-01 – 2018-06-3050021000 USD20180807Open filing evidence

Crude Oiland Natural Gas Services · Midstream Services

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3118029000 USD20180508Open filing evidence

Equipment Rental Services · Well Servicing

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:EquipmentRentalServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-311160000 USD20180508Open filing evidence

Hydraulic Fracturing Services · Well Servicing

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:HydraulicFracturingServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3110426000 USD20180508Open filing evidence

Natural Gas Liquid Services · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:NaturalGasLiquidServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3113323000 USD20180508Open filing evidence

Natural Gas Production · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:NaturalGasProductionMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3126961000 USD20180508Open filing evidence

Oil Production · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:OilProductionMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-31323386000 USD20180508Open filing evidence

Purchased Gas Sales · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:PurchasedGasSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3149000 USD20180508Open filing evidence

Purchased Oil Sales · Exploration And Production

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:PurchasedOilSalesMember;us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-3117989000 USD20180508Open filing evidence

Water Services · Midstream Services

Product Or Service · Statement Business Segments

Source dimensions us-gaap:ProductOrServiceAxis=oas:WaterServicesMember;us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2018-01-01 – 2018-03-319893000 USD20180508Open filing evidence

Exploration And Production

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30335327000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30947013000 USD20211104Open filing evidence
2021-04-01 – 2021-06-30328987000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30611685000 USD20210805Open filing evidence
2021-01-01 – 2021-03-31282698000 USD20210507Open filing evidence
2020-11-20 – 2020-12-3193794000 USD20210308Open filing evidence
2020-07-01 – 2020-09-30215636000 USD20211104Open filing evidence
2020-01-01 – 2020-09-30668849000 USD20211104Open filing evidence
2020-04-01 – 2020-06-30121826000 USD20210805Open filing evidence
2020-01-01 – 2020-06-30453213000 USD20210805Open filing evidence
2020-01-01 – 2020-03-31331387000 USD20210507Open filing evidence
2019-01-01 – 2019-12-311859506000 RestatedUSD20210308Open filing evidence
2019-07-01 – 2019-09-30432720000 RestatedUSD20201105Open filing evidence
2019-01-01 – 2019-09-301438235000 RestatedUSD20201105Open filing evidence
2019-04-01 – 2019-06-30477804000 RestatedUSD20200805Open filing evidence
2019-01-01 – 2019-06-301005515000 RestatedUSD20200805Open filing evidence
2019-01-01 – 2019-03-31527711000 RestatedUSD20200518Open filing evidence
2018-01-01 – 2018-12-312197810000 RestatedUSD20210308Open filing evidence
2018-07-01 – 2018-09-30625342000 RestatedUSD20191106Open filing evidence
2018-01-01 – 2018-09-301585204000 RestatedUSD20191106Open filing evidence
2018-04-01 – 2018-06-30525557000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-06-30959861000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-03-31434304000 RestatedUSD20190508Open filing evidence

Exploration And Production · Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-300 USD20211104Open filing evidence
2021-01-01 – 2021-09-300 USD20211104Open filing evidence
2020-07-01 – 2020-09-300 USD20211104Open filing evidence
2020-01-01 – 2020-09-300 USD20211104Open filing evidence

Exploration And Production · Material Reconciling Items

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ConsolidationItemsAxis=us-gaap:MaterialReconcilingItemsMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-310 USD20210507Open filing evidence
2020-01-01 – 2020-03-310 USD20210507Open filing evidence
2019-07-01 – 2019-09-300 USD20191106Open filing evidence
2019-01-01 – 2019-09-300 USD20191106Open filing evidence
2019-01-01 – 2019-03-310 USD20200518Open filing evidence
2018-07-01 – 2018-09-300 USD20191106Open filing evidence
2018-01-01 – 2018-09-300 USD20191106Open filing evidence

Exploration And Production · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31282698000 USD20210507Open filing evidence
2020-01-01 – 2020-03-31331387000 USD20210507Open filing evidence
2019-07-01 – 2019-09-30423822000 USD20191106Open filing evidence
2019-01-01 – 2019-09-301407440000 USD20191106Open filing evidence
2019-01-01 – 2019-03-31527711000 USD20200518Open filing evidence
2018-07-01 – 2018-09-30625342000 USD20191106Open filing evidence
2018-01-01 – 2018-09-301585204000 USD20191106Open filing evidence

Exploration And Production · Operating Segments · Purchased Gas Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:PurchasedGasSalesMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-302334000 USD20191106Open filing evidence
2019-01-01 – 2019-09-306590000 USD20191106Open filing evidence
2018-07-01 – 2018-09-301616000 USD20191106Open filing evidence
2018-01-01 – 2018-09-302161000 USD20191106Open filing evidence

Exploration And Production · Natural Gas And Natural Gas Liquids

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:NaturalGasAndNaturalGasLiquidsMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-3048498000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30108141000 USD20210805Open filing evidence
2021-01-01 – 2021-03-3159643000 USD20210507Open filing evidence
2020-04-01 – 2020-06-3012771000 USD20210805Open filing evidence
2020-01-01 – 2020-06-3039106000 USD20210805Open filing evidence
2020-01-01 – 2020-03-3126335000 USD20210507Open filing evidence

Exploration And Production · Natural Gas And Natural Gas Liquids · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:NaturalGasAndNaturalGasLiquidsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-3025906000 USD20191106Open filing evidence
2019-01-01 – 2019-09-30105594000 USD20191106Open filing evidence
2018-07-01 – 2018-09-3040113000 USD20191106Open filing evidence
2018-01-01 – 2018-09-30115064000 USD20191106Open filing evidence

Exploration And Production · Natural Gas Liquid Services

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:NaturalGasLiquidServicesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30195000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30421000 USD20210805Open filing evidence
2021-01-01 – 2021-03-31226000 USD20210507Open filing evidence
2020-04-01 – 2020-06-30396000 USD20210805Open filing evidence
2020-01-01 – 2020-06-306377000 USD20210805Open filing evidence
2020-01-01 – 2020-03-315981000 USD20210507Open filing evidence

Exploration And Production · Natural Gas Liquid Services · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:NaturalGasLiquidServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-315981000 USD20200518Open filing evidence
2019-01-01 – 2019-03-3110458000 USD20200518Open filing evidence

Exploration And Production · Oil Production

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:OilProductionMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30205731000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30598278000 USD20211104Open filing evidence
2021-04-01 – 2021-06-30206729000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30392547000 USD20210805Open filing evidence
2020-07-01 – 2020-09-30155052000 USD20211104Open filing evidence
2020-01-01 – 2020-09-30448904000 USD20211104Open filing evidence
2020-04-01 – 2020-06-3081059000 USD20210805Open filing evidence
2020-01-01 – 2020-06-30293852000 USD20210805Open filing evidence

Exploration And Production · Oil Production · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:OilProductionMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-31212793000 USD20200518Open filing evidence
2019-07-01 – 2019-09-30318564000 USD20191106Open filing evidence
2019-01-01 – 2019-09-30964662000 USD20191106Open filing evidence
2019-01-01 – 2019-03-31318120000 USD20200518Open filing evidence
2018-07-01 – 2018-09-30414082000 USD20191106Open filing evidence
2018-01-01 – 2018-09-301103575000 USD20191106Open filing evidence

Exploration And Production · Purchased Oil Sales

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3136716000 USD20210507Open filing evidence
2020-01-01 – 2020-03-3185757000 USD20210507Open filing evidence

Exploration And Production · Purchased Oil Sales · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:ExplorationAndProductionMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-3185757000 USD20200518Open filing evidence
2019-07-01 – 2019-09-3077018000 USD20191106Open filing evidence
2019-01-01 – 2019-09-30330594000 USD20191106Open filing evidence
2019-01-01 – 2019-03-31147136000 USD20200518Open filing evidence
2018-07-01 – 2018-09-30169531000 USD20191106Open filing evidence
2018-01-01 – 2018-09-30364404000 USD20191106Open filing evidence

Midstream Services

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3066712000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30203545000 USD20211104Open filing evidence
2021-04-01 – 2021-06-3064073000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30136834000 USD20210805Open filing evidence
2021-01-01 – 2021-03-31114117000 USD20210507Open filing evidence
2020-11-20 – 2020-12-3143257000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19376815000 USD20210308Open filing evidence
2020-07-01 – 2020-09-3055423000 RestatedUSD20211104Open filing evidence
2020-01-01 – 2020-09-30156360000 RestatedUSD20211104Open filing evidence
2020-04-01 – 2020-06-3044526000 RestatedUSD20210805Open filing evidence
2020-01-01 – 2020-06-30100937000 RestatedUSD20210805Open filing evidence
2020-01-01 – 2020-03-31124955000 USD20210507Open filing evidence
2019-01-01 – 2019-12-31488427000 USD20210308Open filing evidence
2019-07-01 – 2019-09-30123411000 USD20201105Open filing evidence
2019-01-01 – 2019-09-30349438000 USD20201105Open filing evidence
2019-04-01 – 2019-06-30119445000 USD20200805Open filing evidence
2019-01-01 – 2019-06-30226027000 USD20200805Open filing evidence
2019-01-01 – 2019-03-31106582000 USD20200518Open filing evidence
2018-01-01 – 2018-12-31286642000 USD20210308Open filing evidence
2018-07-01 – 2018-09-3075770000 USD20191106Open filing evidence
2018-01-01 – 2018-09-30209739000 RestatedUSD20191106Open filing evidence
2018-04-01 – 2018-06-3069408000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-06-30133970000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-03-3164562000 RestatedUSD20190508Open filing evidence

Midstream Services · Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30-41561000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30-125007000 USD20211104Open filing evidence
2020-07-01 – 2020-09-30-54638000 USD20211104Open filing evidence
2020-01-01 – 2020-09-30-160377000 USD20211104Open filing evidence

Midstream Services · Material Reconciling Items

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:MaterialReconcilingItemsMember
PeriodValueUnitFiledEvidence
2020-11-20 – 2020-12-3117136000 USD20210308Open filing evidence
2020-01-01 – 2020-11-19189284000 USD20210308Open filing evidence
2020-07-01 – 2020-09-3054638000 USD20201105Open filing evidence
2020-01-01 – 2020-09-30160377000 USD20201105Open filing evidence
2019-01-01 – 2019-12-31276189000 USD20210308Open filing evidence
2019-07-01 – 2019-09-3073388000 USD20201105Open filing evidence
2019-01-01 – 2019-09-30199793000 USD20201105Open filing evidence
2019-04-01 – 2019-06-3067844000 USD20190809Open filing evidence
2019-01-01 – 2019-06-30126405000 USD20190809Open filing evidence
2018-01-01 – 2018-12-31162505000 USD20210308Open filing evidence
2018-07-01 – 2018-09-3042745000 USD20191106Open filing evidence
2018-01-01 – 2018-09-30119095000 USD20191106Open filing evidence
2018-04-01 – 2018-06-3039710000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3076350000 USD20190809Open filing evidence

Midstream Services · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30108273000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30328552000 USD20211104Open filing evidence
2021-04-01 – 2021-06-30106163000 USD20210805Open filing evidence
2021-01-01 – 2021-06-30220280000 USD20210805Open filing evidence
2021-01-01 – 2021-03-3172761000 USD20210507Open filing evidence
2020-07-01 – 2020-09-30110061000 RestatedUSD20211104Open filing evidence
2020-01-01 – 2020-09-30316737000 RestatedUSD20211104Open filing evidence
2020-04-01 – 2020-06-3081721000 RestatedUSD20210805Open filing evidence
2020-01-01 – 2020-06-30206676000 RestatedUSD20210805Open filing evidence
2020-01-01 – 2020-03-3156411000 USD20210507Open filing evidence
2019-01-01 – 2019-12-31212238000 USD20200227Open filing evidence
2019-07-01 – 2019-09-3050023000 USD20201105Open filing evidence
2019-01-01 – 2019-09-30149645000 USD20201105Open filing evidence
2019-04-01 – 2019-06-3051601000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3099622000 USD20200805Open filing evidence
2019-01-01 – 2019-03-3148021000 USD20200518Open filing evidence
2018-01-01 – 2018-12-31124137000 USD20200227Open filing evidence
2018-07-01 – 2018-09-3033025000 USD20191106Open filing evidence
2018-01-01 – 2018-09-3090644000 USD20191106Open filing evidence
2018-04-01 – 2018-06-3029698000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3057620000 USD20190809Open filing evidence

Midstream Services · Operating Segments · Crude Oiland Natural Gas Services

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-3022682000 USD20201105Open filing evidence
2020-01-01 – 2020-09-3072267000 USD20201105Open filing evidence
2020-01-01 – 2020-03-3126921000 USD20200518Open filing evidence
2019-07-01 – 2019-09-3021653000 USD20201105Open filing evidence
2019-01-01 – 2019-09-3069189000 USD20201105Open filing evidence
2019-04-01 – 2019-06-3022875000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3047538000 USD20190809Open filing evidence
2019-01-01 – 2019-03-3124664000 USD20200518Open filing evidence
2018-07-01 – 2018-09-3018188000 USD20191106Open filing evidence
2018-01-01 – 2018-09-3054124000 USD20191106Open filing evidence
2018-04-01 – 2018-06-3017907000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3035936000 USD20190809Open filing evidence

Midstream Services · Operating Segments · Natural Gasand NGL Services

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:NaturalGasandNGLServicesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-3015100000 USD20201105Open filing evidence
2020-01-01 – 2020-09-3035707000 USD20201105Open filing evidence
2019-07-01 – 2019-09-3016424000 USD20201105Open filing evidence
2019-01-01 – 2019-09-3046541000 USD20201105Open filing evidence
2019-04-01 – 2019-06-3017319000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3030116000 USD20190809Open filing evidence
2018-04-01 – 2018-06-300 USD20190809Open filing evidence
2018-01-01 – 2018-06-300 USD20190809Open filing evidence

Midstream Services · Operating Segments · Producedand Flowback Water Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:ProducedandFlowbackWaterServiceMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-03-3111251000 USD20200518Open filing evidence
2019-04-01 – 2019-06-309473000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3018506000 USD20190809Open filing evidence
2019-01-01 – 2019-03-319033000 USD20200518Open filing evidence
2018-04-01 – 2018-06-309058000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3017934000 USD20190809Open filing evidence

Midstream Services · Operating Segments · Purchased Oil Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-308444000 USD20201105Open filing evidence
2020-01-01 – 2020-09-3018196000 USD20201105Open filing evidence
2019-07-01 – 2019-09-300 USD20201105Open filing evidence
2019-01-01 – 2019-09-3028000 USD20201105Open filing evidence

Midstream Services · Operating Segments · Total Midstream Products

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:TotalMidstreamProductsMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-3023940000 USD20201105Open filing evidence
2020-01-01 – 2020-09-3056793000 USD20201105Open filing evidence
2019-07-01 – 2019-09-3017567000 USD20201105Open filing evidence
2019-01-01 – 2019-09-3051147000 USD20201105Open filing evidence
2019-04-01 – 2019-06-3019253000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3033578000 USD20190809Open filing evidence
2018-04-01 – 2018-06-302733000 USD20190809Open filing evidence
2018-01-01 – 2018-06-303750000 USD20190809Open filing evidence

Midstream Services · Operating Segments · Total Midstream Services Productand Services Member

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:TotalMidstreamServicesProductandServicesMemberMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-3031483000 USD20201105Open filing evidence
2020-01-01 – 2020-09-3099567000 USD20201105Open filing evidence
2020-01-01 – 2020-03-3138172000 USD20200518Open filing evidence
2019-07-01 – 2019-09-3032456000 USD20201105Open filing evidence
2019-01-01 – 2019-09-3098498000 USD20201105Open filing evidence
2019-01-01 – 2019-03-3133697000 USD20200518Open filing evidence

Midstream Services · Operating Segments · Water Services

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=oas:WaterServicesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30396000 USD20201105Open filing evidence
2020-01-01 – 2020-09-302890000 USD20201105Open filing evidence
2020-01-01 – 2020-03-312200000 USD20200518Open filing evidence
2019-07-01 – 2019-09-301143000 USD20201105Open filing evidence
2019-01-01 – 2019-09-304578000 USD20201105Open filing evidence
2019-04-01 – 2019-06-301906000 USD20190809Open filing evidence
2019-01-01 – 2019-06-303434000 USD20190809Open filing evidence
2019-01-01 – 2019-03-311527000 USD20200518Open filing evidence
2018-04-01 – 2018-06-302377000 USD20190809Open filing evidence
2018-01-01 – 2018-06-303394000 USD20190809Open filing evidence

Midstream Services · Crude Oiland Natural Gas Services

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-3020794000 USD20210805Open filing evidence
2021-01-01 – 2021-06-3043019000 USD20210805Open filing evidence
2021-01-01 – 2021-03-3122225000 USD20210507Open filing evidence
2020-04-01 – 2020-06-3022898000 USD20210805Open filing evidence
2020-01-01 – 2020-06-3049584000 USD20210805Open filing evidence
2020-01-01 – 2020-03-3126921000 USD20210507Open filing evidence

Midstream Services · Crude Oiland Natural Gas Services · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:CrudeOilandNaturalGasServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3022898000 USD20200805Open filing evidence
2020-01-01 – 2020-06-3049584000 USD20200805Open filing evidence
2019-04-01 – 2019-06-3022875000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3047538000 USD20200805Open filing evidence

Midstream Services · Crude Oil Natural Gas And NGL Product Revenues

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:CrudeOilNaturalGasAndNGLProductRevenuesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3033845000 USD20211104Open filing evidence
2021-01-01 – 2021-09-3091671000 USD20211104Open filing evidence
2020-07-01 – 2020-09-3015100000 USD20211104Open filing evidence
2020-01-01 – 2020-09-3035707000 USD20211104Open filing evidence

Midstream Services · Crude Oil Natural Gas And NGL Service Revenues

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:CrudeOilNaturalGasAndNGLServiceRevenuesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3022111000 USD20211104Open filing evidence
2021-01-01 – 2021-09-3065225000 USD20211104Open filing evidence
2020-07-01 – 2020-09-3022682000 USD20211104Open filing evidence
2020-01-01 – 2020-09-3072267000 USD20211104Open filing evidence

Midstream Services · Natural Gasand NGL Services

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:NaturalGasandNGLServicesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-3026782000 USD20210805Open filing evidence
2021-01-01 – 2021-06-3057965000 USD20210805Open filing evidence
2021-01-01 – 2021-03-3131181000 USD20210507Open filing evidence
2020-04-01 – 2020-06-304335000 USD20210805Open filing evidence
2020-01-01 – 2020-06-3020608000 USD20210805Open filing evidence
2020-01-01 – 2020-03-3116039000 USD20210507Open filing evidence

Midstream Services · Natural Gasand NGL Services · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:NaturalGasandNGLServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-304335000 USD20200805Open filing evidence
2020-01-01 – 2020-06-3020608000 USD20200805Open filing evidence
2019-01-01 – 2019-12-3170746000 USD20200227Open filing evidence
2019-07-01 – 2019-09-3016424000 USD20191106Open filing evidence
2019-01-01 – 2019-09-3046541000 USD20191106Open filing evidence
2019-04-01 – 2019-06-3017319000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3030116000 USD20200805Open filing evidence
2018-01-01 – 2018-12-311464000 USD20200227Open filing evidence
2018-07-01 – 2018-09-300 USD20191106Open filing evidence
2018-01-01 – 2018-09-300 USD20191106Open filing evidence

Midstream Services · Producedand Flowback Water Service

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:ProducedandFlowbackWaterServiceMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3010312000 USD20211104Open filing evidence
2021-01-01 – 2021-09-3025230000 USD20211104Open filing evidence
2021-04-01 – 2021-06-307466000 USD20210805Open filing evidence
2021-01-01 – 2021-06-3014874000 USD20210805Open filing evidence
2020-07-01 – 2020-09-308801000 USD20211104Open filing evidence
2020-01-01 – 2020-09-3027300000 USD20211104Open filing evidence
2020-04-01 – 2020-06-307247000 USD20210805Open filing evidence
2020-01-01 – 2020-06-3018499000 USD20210805Open filing evidence

Midstream Services · Producedand Flowback Water Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:ProducedandFlowbackWaterServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-308801000 USD20201105Open filing evidence
2020-01-01 – 2020-09-3027300000 USD20201105Open filing evidence
2020-04-01 – 2020-06-307247000 USD20200805Open filing evidence
2020-01-01 – 2020-06-3018499000 USD20200805Open filing evidence
2019-07-01 – 2019-09-3010803000 USD20201105Open filing evidence
2019-01-01 – 2019-09-3029309000 USD20201105Open filing evidence
2019-04-01 – 2019-06-309473000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3018506000 USD20200805Open filing evidence

Midstream Services · Purchased Oil Sales

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-300 USD20211104Open filing evidence
2021-01-01 – 2021-09-3019738000 USD20211104Open filing evidence
2021-04-01 – 2021-06-308290000 USD20210805Open filing evidence
2021-01-01 – 2021-06-3019739000 USD20210805Open filing evidence
2021-01-01 – 2021-03-3111449000 USD20210507Open filing evidence
2020-07-01 – 2020-09-308444000 USD20211104Open filing evidence
2020-01-01 – 2020-09-3018196000 USD20211104Open filing evidence
2020-04-01 – 2020-06-309752000 USD20210805Open filing evidence
2020-01-01 – 2020-06-309752000 USD20210805Open filing evidence
2020-01-01 – 2020-03-310 USD20210507Open filing evidence

Midstream Services · Purchased Oil Sales · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:PurchasedOilSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-309752000 USD20200805Open filing evidence
2020-01-01 – 2020-06-309752000 USD20200805Open filing evidence
2019-07-01 – 2019-09-300 USD20191106Open filing evidence
2019-01-01 – 2019-09-3028000 USD20191106Open filing evidence
2019-04-01 – 2019-06-3028000 USD20200805Open filing evidence
2019-01-01 – 2019-06-3028000 USD20200805Open filing evidence
2018-07-01 – 2018-09-301838000 USD20191106Open filing evidence
2018-01-01 – 2018-09-302193000 USD20191106Open filing evidence

Midstream Services · Total Midstream Products

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:TotalMidstreamProductsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3034289000 USD20211104Open filing evidence
2021-01-01 – 2021-09-30113090000 USD20211104Open filing evidence
2021-04-01 – 2021-06-3035813000 USD20210805Open filing evidence
2021-01-01 – 2021-06-3078941000 USD20210805Open filing evidence
2021-01-01 – 2021-03-3143126000 USD20210507Open filing evidence
2020-07-01 – 2020-09-3023940000 USD20211104Open filing evidence
2020-01-01 – 2020-09-3056793000 USD20211104Open filing evidence
2020-04-01 – 2020-06-3014381000 USD20210805Open filing evidence
2020-01-01 – 2020-06-3032854000 USD20210805Open filing evidence
2020-01-01 – 2020-03-3118239000 USD20210507Open filing evidence

Midstream Services · Total Midstream Services Productand Services Member

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:TotalMidstreamServicesProductandServicesMemberMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3032423000 USD20211104Open filing evidence
2021-01-01 – 2021-09-3090455000 USD20211104Open filing evidence
2021-04-01 – 2021-06-3028260000 USD20210805Open filing evidence
2021-01-01 – 2021-06-3057893000 USD20210805Open filing evidence
2020-07-01 – 2020-09-3031483000 USD20211104Open filing evidence
2020-01-01 – 2020-09-3099567000 USD20211104Open filing evidence
2020-04-01 – 2020-06-3030145000 USD20210805Open filing evidence
2020-01-01 – 2020-06-3068083000 USD20210805Open filing evidence

Midstream Services · Water Services

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:WaterServicesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30444000 USD20211104Open filing evidence
2021-01-01 – 2021-09-301681000 USD20211104Open filing evidence
2021-04-01 – 2021-06-30741000 USD20210805Open filing evidence
2021-01-01 – 2021-06-301237000 USD20210805Open filing evidence
2021-01-01 – 2021-03-31496000 USD20210507Open filing evidence
2020-07-01 – 2020-09-30396000 USD20211104Open filing evidence
2020-01-01 – 2020-09-302890000 USD20211104Open filing evidence
2020-04-01 – 2020-06-30294000 USD20210805Open filing evidence
2020-01-01 – 2020-06-302494000 USD20210805Open filing evidence
2020-01-01 – 2020-03-312200000 USD20210507Open filing evidence

Midstream Services · Water Services · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:MidstreamServicesMember;srt:ProductOrServiceAxis=oas:WaterServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-301143000 USD20191106Open filing evidence
2019-01-01 – 2019-09-304578000 USD20191106Open filing evidence
2018-07-01 – 2018-09-303014000 USD20191106Open filing evidence
2018-01-01 – 2018-09-306408000 USD20191106Open filing evidence

Well Servicing

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-31121660000 USD20200227Open filing evidence
2019-07-01 – 2019-09-3030409000 USD20191106Open filing evidence
2019-01-01 – 2019-09-30102321000 USD20191106Open filing evidence
2019-04-01 – 2019-06-3039281000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3071912000 USD20190809Open filing evidence
2019-01-01 – 2019-03-3132631000 USD20190508Open filing evidence
2018-01-01 – 2018-12-31205619000 USD20200227Open filing evidence
2018-07-01 – 2018-09-3056439000 USD20191106Open filing evidence
2018-01-01 – 2018-09-30161242000 USD20191106Open filing evidence
2018-04-01 – 2018-06-3059914000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-06-30104803000 RestatedUSD20190809Open filing evidence
2018-01-01 – 2018-03-3144888000 RestatedUSD20190508Open filing evidence

Well Servicing · Material Reconciling Items

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember;srt:ConsolidationItemsAxis=us-gaap:MaterialReconcilingItemsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-3021511000 USD20191106Open filing evidence
2019-01-01 – 2019-09-3071526000 USD20191106Open filing evidence
2019-04-01 – 2019-06-3027842000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3050015000 USD20190809Open filing evidence
2018-07-01 – 2018-09-3040177000 USD20191106Open filing evidence
2018-01-01 – 2018-09-30114898000 USD20191106Open filing evidence
2018-04-01 – 2018-06-3041418000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3074721000 USD20190809Open filing evidence

Well Servicing · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-07-01 – 2019-09-308898000 USD20191106Open filing evidence
2019-01-01 – 2019-09-3030795000 USD20191106Open filing evidence
2019-04-01 – 2019-06-3011439000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3021897000 USD20190809Open filing evidence
2018-07-01 – 2018-09-3016262000 USD20191106Open filing evidence
2018-01-01 – 2018-09-3046344000 USD20191106Open filing evidence
2018-04-01 – 2018-06-3018496000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3030082000 USD20190809Open filing evidence

Well Servicing · Equipment Rental Services · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember;srt:ProductOrServiceAxis=oas:EquipmentRentalServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-04-01 – 2019-06-30811000 USD20190809Open filing evidence
2019-01-01 – 2019-06-301494000 USD20190809Open filing evidence
2018-04-01 – 2018-06-301106000 USD20190809Open filing evidence
2018-01-01 – 2018-06-302266000 USD20190809Open filing evidence

Well Servicing · Hydraulic Fracturing Services · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=oas:WellServicingMember;srt:ProductOrServiceAxis=oas:HydraulicFracturingServicesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2019-04-01 – 2019-06-3010628000 USD20190809Open filing evidence
2019-01-01 – 2019-06-3020403000 USD20190809Open filing evidence
2018-04-01 – 2018-06-3017390000 USD20190809Open filing evidence
2018-01-01 – 2018-06-3027816000 USD20190809Open filing evidence