<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.oasispetroleum.com/20160331" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:oas="http://www.oasispetroleum.com/20160331" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-roles-2016-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-types-2016-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2016-01-31" schemaLocation="http://xbrl.sec.gov/country/2016/country-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2016-01-31" schemaLocation="http://xbrl.sec.gov/currency/2016/currency-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2016-01-31" schemaLocation="http://xbrl.sec.gov/exch/2016/exch-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="oas-20160331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="oas-20160331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="oas-20160331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="oas-20160331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="AssetRetirementObligations" roleURI="http://www.oasispetroleum.com/role/AssetRetirementObligations">
        <link:definition>2109100 - Disclosure - Asset Retirement Obligations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/AssetRetirementObligationsAdditionalInformationDetails">
        <link:definition>2409403 - Disclosure - Asset Retirement Obligations - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsScheduleOfChangesInAssetRetirementObligationsDetails" roleURI="http://www.oasispetroleum.com/role/AssetRetirementObligationsScheduleOfChangesInAssetRetirementObligationsDetails">
        <link:definition>2409402 - Disclosure - Asset Retirement Obligations - Schedule of Changes in Asset Retirement Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsTables" roleURI="http://www.oasispetroleum.com/role/AssetRetirementObligationsTables">
        <link:definition>2309301 - Disclosure - Asset Retirement Obligations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetsHeldForSale" roleURI="http://www.oasispetroleum.com/role/AssetsHeldForSale">
        <link:definition>2107100 - Disclosure - Assets Held for Sale</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetsHeldForSaleDetails" roleURI="http://www.oasispetroleum.com/role/AssetsHeldForSaleDetails">
        <link:definition>2407402 - Disclosure - Assets Held for Sale (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetsHeldForSaleTables" roleURI="http://www.oasispetroleum.com/role/AssetsHeldForSaleTables">
        <link:definition>2307301 - Disclosure - Assets Held for Sale (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentInformation" roleURI="http://www.oasispetroleum.com/role/BusinessSegmentInformation">
        <link:definition>2114100 - Disclosure - Business Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentInformationAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/BusinessSegmentInformationAdditionalInformationDetails">
        <link:definition>2414402 - Disclosure - Business Segment Information - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentInformationSummarizedFinancialInformationOfSegmentsDetails" roleURI="http://www.oasispetroleum.com/role/BusinessSegmentInformationSummarizedFinancialInformationOfSegmentsDetails">
        <link:definition>2414403 - Disclosure - Business Segment Information - Summarized Financial Information of Segments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentInformationTables" roleURI="http://www.oasispetroleum.com/role/BusinessSegmentInformationTables">
        <link:definition>2314301 - Disclosure - Business Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://www.oasispetroleum.com/role/CommitmentsAndContingencies">
        <link:definition>2115100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/CommitmentsAndContingenciesAdditionalInformationDetails">
        <link:definition>2415401 - Disclosure - Commitments and Contingencies - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStock" roleURI="http://www.oasispetroleum.com/role/CommonStock">
        <link:definition>2111100 - Disclosure - Common Stock</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockDetails" roleURI="http://www.oasispetroleum.com/role/CommonStockDetails">
        <link:definition>2411401 - Disclosure - Common Stock (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheetUnaudited" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatedBalanceSheetUnaudited">
        <link:definition>1001000 - Statement - Condensed Consolidated Balance Sheet (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheetUnauditedParenthetical" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatedBalanceSheetUnauditedParenthetical">
        <link:definition>1001501 - Statement - Condensed Consolidated Balance Sheet (Unaudited) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementOfCashFlowsUnaudited" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatedStatementOfCashFlowsUnaudited">
        <link:definition>1004000 - Statement - Condensed Consolidated Statement of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementOfChangesInStockholdersEquityUnaudited" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatedStatementOfChangesInStockholdersEquityUnaudited">
        <link:definition>1003000 - Statement - Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementOfOperationsUnaudited" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatedStatementOfOperationsUnaudited">
        <link:definition>1002000 - Statement - Condensed Consolidated Statement of Operations (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformation" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformation">
        <link:definition>2116100 - Disclosure - Condensed Consolidating Financial Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformationAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationAdditionalInformationDetails">
        <link:definition>2416402 - Disclosure - Condensed Consolidating Financial Information - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformationCondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingBalanceSheetAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationCondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingBalanceSheetAdditionalInformationDetails">
        <link:definition>2416406 - Disclosure - Condensed Consolidating Financial Information Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Balance Sheet - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingBalanceSheetDetails" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingBalanceSheetDetails">
        <link:definition>2416403 - Disclosure - Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Balance Sheet (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingBalanceSheetDetailsCalc2" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingBalanceSheetDetailsCalc2">
        <link:definition>2416403 - Disclosure - Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Balance Sheet (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingStatementOfCashFlowsDetails" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingStatementOfCashFlowsDetails">
        <link:definition>2416405 - Disclosure - Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Cash Flows (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingStatementOfOperationsDetails" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationScheduleOfCondensedConsolidatingStatementOfOperationsDetails">
        <link:definition>2416404 - Disclosure - Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatingFinancialInformationTables" roleURI="http://www.oasispetroleum.com/role/CondensedConsolidatingFinancialInformationTables">
        <link:definition>2316301 - Disclosure - Condensed Consolidating Financial Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstruments" roleURI="http://www.oasispetroleum.com/role/DerivativeInstruments">
        <link:definition>2105100 - Disclosure - Derivative Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsRealizedAndUnrealizedGainsAndLossesFromCommodityDerivativeInstrumentsDetails" roleURI="http://www.oasispetroleum.com/role/DerivativeInstrumentsRealizedAndUnrealizedGainsAndLossesFromCommodityDerivativeInstrumentsDetails">
        <link:definition>2405404 - Disclosure - Derivative Instruments - Realized and Unrealized Gains and Losses from Commodity Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsScheduleOfLocationAndFairValueOfOutstandingCommodityDerivativeInstrumentsDetails" roleURI="http://www.oasispetroleum.com/role/DerivativeInstrumentsScheduleOfLocationAndFairValueOfOutstandingCommodityDerivativeInstrumentsDetails">
        <link:definition>2405403 - Disclosure - Derivative Instruments - Schedule of Location and Fair Value of Outstanding Commodity Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsScheduleOfOutstandingCommodityDerivativeInstrumentsDetails" roleURI="http://www.oasispetroleum.com/role/DerivativeInstrumentsScheduleOfOutstandingCommodityDerivativeInstrumentsDetails">
        <link:definition>2405402 - Disclosure - Derivative Instruments - Schedule of Outstanding Commodity Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsSummaryOfGrossAndNetInformationAboutCommodityDerivativeInstrumentsDetails" roleURI="http://www.oasispetroleum.com/role/DerivativeInstrumentsSummaryOfGrossAndNetInformationAboutCommodityDerivativeInstrumentsDetails">
        <link:definition>2405405 - Disclosure - Derivative Instruments - Summary of Gross and Net Information about Commodity Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsTables" roleURI="http://www.oasispetroleum.com/role/DerivativeInstrumentsTables">
        <link:definition>2305301 - Disclosure - Derivative Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://www.oasispetroleum.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsLossPerShare" roleURI="http://www.oasispetroleum.com/role/EarningsLossPerShare">
        <link:definition>2113100 - Disclosure - Earnings (Loss) Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsLossPerShareScheduleOfWeightedAverageNumberOfSharesOutstandingDetails" roleURI="http://www.oasispetroleum.com/role/EarningsLossPerShareScheduleOfWeightedAverageNumberOfSharesOutstandingDetails">
        <link:definition>2413402 - Disclosure - Earnings (Loss) Per Share - Schedule of Weighted-Average Number of Shares Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsLossPerShareTables" roleURI="http://www.oasispetroleum.com/role/EarningsLossPerShareTables">
        <link:definition>2313301 - Disclosure - Earnings (Loss) Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.oasispetroleum.com/role/FairValueMeasurements">
        <link:definition>2104100 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/FairValueMeasurementsAdditionalInformationDetails">
        <link:definition>2404403 - Disclosure - Fair Value Measurements - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsHierarchyOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails" roleURI="http://www.oasispetroleum.com/role/FairValueMeasurementsHierarchyOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails">
        <link:definition>2404402 - Disclosure - Fair Value Measurements - Hierarchy of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.oasispetroleum.com/role/FairValueMeasurementsTables">
        <link:definition>2304301 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.oasispetroleum.com/role/IncomeTaxes">
        <link:definition>2110100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/IncomeTaxesAdditionalInformationDetails">
        <link:definition>2410401 - Disclosure - Income Taxes - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Inventory" roleURI="http://www.oasispetroleum.com/role/Inventory">
        <link:definition>2103100 - Disclosure - Inventory</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryScheduleOfInventoryDetails" roleURI="http://www.oasispetroleum.com/role/InventoryScheduleOfInventoryDetails">
        <link:definition>2403402 - Disclosure - Inventory - Schedule of Inventory (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryTables" roleURI="http://www.oasispetroleum.com/role/InventoryTables">
        <link:definition>2303301 - Disclosure - Inventory (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebt" roleURI="http://www.oasispetroleum.com/role/LongTermDebt">
        <link:definition>2108100 - Disclosure - Long-Term Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/LongTermDebtAdditionalInformationDetails">
        <link:definition>2408403 - Disclosure - Long-Term Debt - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtScheduleOfLongTermDebtDetails" roleURI="http://www.oasispetroleum.com/role/LongTermDebtScheduleOfLongTermDebtDetails">
        <link:definition>2408402 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtTables" roleURI="http://www.oasispetroleum.com/role/LongTermDebtTables">
        <link:definition>2308301 - Disclosure - Long-Term Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationAndOperationsOfCompany" roleURI="http://www.oasispetroleum.com/role/OrganizationAndOperationsOfCompany">
        <link:definition>2101100 - Disclosure - Organization and Operations of the Company</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyPlantAndEquipment" roleURI="http://www.oasispetroleum.com/role/PropertyPlantAndEquipment">
        <link:definition>2106100 - Disclosure - Property, Plant and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails" roleURI="http://www.oasispetroleum.com/role/PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails">
        <link:definition>2406402 - Disclosure - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyPlantAndEquipmentTables" roleURI="http://www.oasispetroleum.com/role/PropertyPlantAndEquipmentTables">
        <link:definition>2306301 - Disclosure - Property, Plant and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensation" roleURI="http://www.oasispetroleum.com/role/StockBasedCompensation">
        <link:definition>2112100 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationAdditionalInformationDetails" roleURI="http://www.oasispetroleum.com/role/StockBasedCompensationAdditionalInformationDetails">
        <link:definition>2412402 - Disclosure - Stock-Based Compensation - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationSummaryOfAssumptionsDetails" roleURI="http://www.oasispetroleum.com/role/StockBasedCompensationSummaryOfAssumptionsDetails">
        <link:definition>2412403 - Disclosure - Stock-Based Compensation - Summary of Assumptions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationTables" roleURI="http://www.oasispetroleum.com/role/StockBasedCompensationTables">
        <link:definition>2312301 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvents" roleURI="http://www.oasispetroleum.com/role/SubsequentEvents">
        <link:definition>2117100 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsDetails" roleURI="http://www.oasispetroleum.com/role/SubsequentEventsDetails">
        <link:definition>2417401 - Disclosure - Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://www.oasispetroleum.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2102100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://www.oasispetroleum.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="oas_AdvancesFromJointInterestPartnersCurrent" name="AdvancesFromJointInterestPartnersCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="oas_AlternateBasedRateABRMember" name="AlternateBasedRateABRMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_AnnualForfeitureRate" name="AnnualForfeitureRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_AssetRetirementObligationLiabilitiesHeldforSale" name="AssetRetirementObligationLiabilitiesHeldforSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="oas_AssetsHeldforSaleAccumulatedDepreciationDepletionAmortizationandImpairment" name="AssetsHeldforSaleAccumulatedDepreciationDepletionAmortizationandImpairment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="oas_AssetsHeldforSaleLongLivedNetofLiabilities" name="AssetsHeldforSaleLongLivedNetofLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="oas_AssetsHeldforSaleOilandGasProperties" name="AssetsHeldforSaleOilandGasProperties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="oas_CapitalContributions" name="CapitalContributions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="oas_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_CommitmentsAndContingenciesTable" name="CommitmentsAndContingenciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_DebtDiscountAmortizationAndOther" name="DebtDiscountAmortizationAndOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="oas_DebtInstrumentRedemptionTerm" name="DebtInstrumentRedemptionTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_DrillingContractsMember" name="DrillingContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_EquityInEarningsInSubsidiaries" name="EquityInEarningsInSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_ExplorationAndProductionMember" name="ExplorationAndProductionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_FederalCharitableContributionCarryoversMember" name="FederalCharitableContributionCarryoversMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_FutureObligationsUnderPurchaseAgreements" name="FutureObligationsUnderPurchaseAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="oas_FutureObligationsUnderSupplyAgreements" name="FutureObligationsUnderSupplyAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_GainofExtinguishmentofDebtMember" name="GainofExtinguishmentofDebtMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_InvestmentsInAndAdvancesToAffiliates" name="InvestmentsInAndAdvancesToAffiliates" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="oas_LiabilitiesofAssetsHeldforSaleAssetRetirementObligation" name="LiabilitiesofAssetsHeldforSaleAssetRetirementObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="oas_LoansReceivableTerm" name="LoansReceivableTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_LongTermCommitmentsMember" name="LongTermCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_MidstreamServicesMember" name="MidstreamServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_MontanaNetOperatingLossesMember" name="MontanaNetOperatingLossesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_NonCashAssetRetirementObligations" name="NonCashAssetRetirementObligations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_NotesMember" name="NotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_NumberOfTradingDaysConsiderForAverageClosingPrice" name="NumberOfTradingDaysConsiderForAverageClosingPrice" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_OilandGasDeliveryCommitmentsandContractsMaximumTerm" name="OilandGasDeliveryCommitmentsandContractsMaximumTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_OilandGasRigTerminationExpense" name="OilandGasRigTerminationExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="oas_OtherLongTermAssetsCondensedConsolidating" name="OtherLongTermAssetsCondensedConsolidating" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="oas_OwnershipPercentageGuarantor" name="OwnershipPercentageGuarantor" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_PercentageOfMinimumOutstandingPrincipalAmount" name="PercentageOfMinimumOutstandingPrincipalAmount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_PercentageOfPerformanceShareAwardsBasedOnShareholderReturn" name="PercentageOfPerformanceShareAwardsBasedOnShareholderReturn" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_ProceedFromAdvanceFromJointInterestPartners" name="ProceedFromAdvanceFromJointInterestPartners" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_ProvedOilAndGasPropertiesMember" name="ProvedOilAndGasPropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_ProvedOilAndGasPropertiesNet" name="ProvedOilAndGasPropertiesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="oas_PurchasedNotesMember" name="PurchasedNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_RedemptionPercentageMaximum" name="RedemptionPercentageMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_RevenuesPayableAndProductionTaxesCurrent" name="RevenuesPayableAndProductionTaxesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="oas_RightsReceivedForEachPerformanceShareUnit1" name="RightsReceivedForEachPerformanceShareUnit1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="oas_RisksandUncertaintiesPolicyPolicyTextBlock" name="RisksandUncertaintiesPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="oas_SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueOutputExpectedPercentageEarned" name="SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueOutputExpectedPercentageEarned" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="oas_TwoThousandEighteenSwapsMember" name="TwoThousandEighteenSwapsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandEighteenSwapsandThreewayCostlessCollarsMember" name="TwoThousandEighteenSwapsandThreewayCostlessCollarsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandEighteenTwoWayCollarsMember" name="TwoThousandEighteenTwoWayCollarsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandNineteenNotesMember" name="TwoThousandNineteenNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandSeventeenSwapsMember" name="TwoThousandSeventeenSwapsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandSeventeenSwapsandThreewayCostlessCollarsMember" name="TwoThousandSeventeenSwapsandThreewayCostlessCollarsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandSeventeenTwoWayCollarsMember" name="TwoThousandSeventeenTwoWayCollarsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandSixteenSwapsMember" name="TwoThousandSixteenSwapsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandSixteenSwapsandThreewayCostlessCollarsMember" name="TwoThousandSixteenSwapsandThreewayCostlessCollarsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandTwentyOneNotesMember" name="TwoThousandTwentyOneNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandTwentyThreeNotesMember" name="TwoThousandTwentyThreeNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_TwoThousandTwentyTwoNotesMember" name="TwoThousandTwentyTwoNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_UnprovedOilAndGasPropertiesMember" name="UnprovedOilAndGasPropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_WellServicingMember" name="WellServicingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="oas_WillistonBasinProjectMember" name="WillistonBasinProjectMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
