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  <xs:element id="oxy_ScheduleOfObligatedPreferredStockRedemptionsTableTextBlock" abstract="false" name="ScheduleOfObligatedPreferredStockRedemptionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
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  <xs:element id="oxy_PaymentsForProceedsFromEquityInvestmentsAndOtherNet" abstract="false" name="PaymentsForProceedsFromEquityInvestmentsAndOtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="oxy_ThirdPartySitesMember" abstract="true" name="ThirdPartySitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="oxy_EnvironmentalRemediationExpensePerformanceImplementationCost" abstract="false" name="EnvironmentalRemediationExpensePerformanceImplementationCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="oxy_CorporateReconcilingItemsAndEliminationsMember" abstract="true" name="CorporateReconcilingItemsAndEliminationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="oxy_IssuanceOfCommonStockAndOtherNet" abstract="false" name="IssuanceOfCommonStockAndOtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="oxy_NonCashIncomeTaxExpenseBenefitFromReorganization" abstract="false" name="NonCashIncomeTaxExpenseBenefitFromReorganization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="oxy_EnvironmentalReservesExceedingTenMillionSiteCategoryNumberOfSites" abstract="false" name="EnvironmentalReservesExceedingTenMillionSiteCategoryNumberOfSites" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="oxy_StrikePriceTwoMember" abstract="true" name="StrikePriceTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="oxy_BlackButteCoalCompanyMember" abstract="true" name="BlackButteCoalCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="oxy_ClosedOrNonOperatedEntitySitesMember" abstract="true" name="ClosedOrNonOperatedEntitySitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="oxy_StockRedeemedOrCalledDuringPeriodIncludingPremiumValue" abstract="false" name="StockRedeemedOrCalledDuringPeriodIncludingPremiumValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="oxy_DeferredCreditsAndOtherLiabilitiesMember" abstract="true" name="DeferredCreditsAndOtherLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="oxy_ProceedsFromWarrantAndStockOptionExercises" abstract="false" name="ProceedsFromWarrantAndStockOptionExercises" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="oxy_PreferredStockLiquidationPreferenceParValuePercentage" abstract="false" name="PreferredStockLiquidationPreferenceParValuePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
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  <xs:element id="oxy_VariableRateBondsMember" abstract="true" name="VariableRateBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="oxy_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPEffectiveEconomicInterestPercentage" abstract="false" name="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPEffectiveEconomicInterestPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
</xs:schema>
