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  <xs:element id="paa_TradeAccountsReceivableNetDisclosureOfMaximumAgeOfBalancesPastScheduledInvoiceDate" abstract="false" name="TradeAccountsReceivableNetDisclosureOfMaximumAgeOfBalancesPastScheduledInvoiceDate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
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  <xs:element id="paa_ContractsRelatedToNaturalGasPurchasesMember" abstract="true" name="ContractsRelatedToNaturalGasPurchasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ConsentDecreeCivilPenaltiesMember" abstract="true" name="ConsentDecreeCivilPenaltiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_NumberOfOneYearExtensionsProvidedForUnderAgreement" abstract="false" name="NumberOfOneYearExtensionsProvidedForUnderAgreement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="paa_PreferredUnitRedemptionRedemptionPriceAsAPercentageOfIssuePrice" abstract="false" name="PreferredUnitRedemptionRedemptionPriceAsAPercentageOfIssuePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
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  <xs:element id="paa_DistributionPercentageAfterTerminationOfModifiedSharingArrangement" abstract="false" name="DistributionPercentageAfterTerminationOfModifiedSharingArrangement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="paa_CrudeOilStorageTerminalAssetsMember" abstract="true" name="CrudeOilStorageTerminalAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_OtherInventoryMember" abstract="true" name="OtherInventoryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_OperatingAndFinanceLeasesLiabilityToBePaidAfterYearFive" abstract="false" name="OperatingAndFinanceLeasesLiabilityToBePaidAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_MinimumVolumeCommitmentAgreementsMember" abstract="true" name="MinimumVolumeCommitmentAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_NotesDueInApril2027At825PercentMember" abstract="true" name="NotesDueInApril2027At825PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_SharesClassCMember" abstract="true" name="SharesClassCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_InsuranceCoverageLimit" abstract="false" name="InsuranceCoverageLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_ContractWithCustomerAssetAndLiabilityLineItems" abstract="true" name="ContractWithCustomerAssetAndLiabilityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="paa_PreferredUnitDistributionPercentageSpread" abstract="false" name="PreferredUnitDistributionPercentageSpread" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="paa_EagleFordTerminalsCorpusChristiLLCMember" abstract="true" name="EagleFordTerminalsCorpusChristiLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_CaliforniaAssetsMember" abstract="true" name="CaliforniaAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ForeignPeriodTaxOnPermanentBookVersusTaxDifferences" abstract="false" name="ForeignPeriodTaxOnPermanentBookVersusTaxDifferences" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_TerminallingStorageAndOtherMember" abstract="true" name="TerminallingStorageAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_LeasesRightOfUseAsset" abstract="false" name="LeasesRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_SeniorNotesDueInOctober2023At385PercentMember" abstract="true" name="SeniorNotesDueInOctober2023At385PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_Linefill" abstract="false" name="Linefill" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_RattlerMidstreamOperatingLLCMember" abstract="true" name="RattlerMidstreamOperatingLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="paa_NGLStorageTerminalFractionationAndProcessingFacilitiesMember" abstract="true" name="NGLStorageTerminalFractionationAndProcessingFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="paa_RedRiverPipelineCompanyLLCMember" abstract="true" name="RedRiverPipelineCompanyLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsOutstanding" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="paa_TransactionRelatedExpenses" abstract="false" name="TransactionRelatedExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_LesseeLeasesRenewalTerm" abstract="false" name="LesseeLeasesRenewalTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="paa_FourForwardStartingThirtyYearInterestRateSwaps074PercentMember" abstract="true" name="FourForwardStartingThirtyYearInterestRateSwaps074PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_InitialMargin" abstract="false" name="InitialMargin" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_ScheduleOfCalculationOfBasicAndDilutedNetIncomePerCommonUnitTable" abstract="true" name="ScheduleOfCalculationOfBasicAndDilutedNetIncomePerCommonUnitTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="paa_InventoryWeightedAveragePricePerUnitLinefill" abstract="false" name="InventoryWeightedAveragePricePerUnitLinefill" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
  <xs:element id="paa_WhiteCliffsPipelineLLCMember" abstract="true" name="WhiteCliffsPipelineLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_NonOperatedUndividedJointInterestOwnershipPercentageSold" abstract="false" name="NonOperatedUndividedJointInterestOwnershipPercentageSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="paa_StonepeakInfrastructurePartnersAffiliatesMember" abstract="true" name="StonepeakInfrastructurePartnersAffiliatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_DebtInstrumentCoverageRatioDebtToEBITDAMaximum" abstract="false" name="DebtInstrumentCoverageRatioDebtToEBITDAMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="paa_PartnersCapitalAndDistributionsTable" abstract="true" name="PartnersCapitalAndDistributionsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="paa_InventoryVolumesLinefill" abstract="false" name="InventoryVolumesLinefill" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:volumeItemType"/>
  <xs:element id="paa_CurrentLiabilitiesMember" abstract="true" name="CurrentLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_SeriesAPreferredUnitsMember" abstract="true" name="SeriesAPreferredUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_PreferredUnitsConversionRatio" abstract="false" name="PreferredUnitsConversionRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="paa_OrganizationConsolidationAndPresentationOfFinancialStatementsTable" abstract="true" name="OrganizationConsolidationAndPresentationOfFinancialStatementsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="paa_CommonUnitsMember" abstract="true" name="CommonUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_SeniorSecuredHedgedInventoryFacilityMember" abstract="true" name="SeniorSecuredHedgedInventoryFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_CrudeOilSegmentMember" abstract="true" name="CrudeOilSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_OperatingAndFinanceLeasesLiabilityToBePaidYearFour" abstract="false" name="OperatingAndFinanceLeasesLiabilityToBePaidYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_ButaneContractsRelatedToSubsequentSaleOfProductMember" abstract="true" name="ButaneContractsRelatedToSubsequentSaleOfProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_InventoryCurrentAndNoncurrent" abstract="false" name="InventoryCurrentAndNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_GasProcessingAgreementThatWasEnteredIntoInConjunctionWithThePurchaseOfAnAdditionalOwnershipInterestInCertainStraddlePlantsMember" abstract="true" name="GasProcessingAgreementThatWasEnteredIntoInConjunctionWithThePurchaseOfAnAdditionalOwnershipInterestInCertainStraddlePlantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ContractwithCustomerLiabilityOther" abstract="false" name="ContractwithCustomerLiabilityOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_ModifiedSharingArrangementTerm" abstract="false" name="ModifiedSharingArrangementTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="paa_ClaimForReimbursementFromInsuranceMember" abstract="true" name="ClaimForReimbursementFromInsuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ContractWithCustomerCounterpartyDeficienciesTableTextBlock" abstract="false" name="ContractWithCustomerCounterpartyDeficienciesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="paa_AssetAcquisitionConsiderationTransferredNetToOwnershipInterest" abstract="false" name="AssetAcquisitionConsiderationTransferredNetToOwnershipInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_InventoryVolumesCurrent" abstract="false" name="InventoryVolumesCurrent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:volumeItemType"/>
  <xs:element id="paa_PartnersCapitalAndDistributionLineItems" abstract="true" name="PartnersCapitalAndDistributionLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="paa_LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersOwnershipInterestUnits" abstract="false" name="LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersOwnershipInterestUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="paa_IncomeTaxExaminationAmountofDisputedAssessmentPaid" abstract="false" name="IncomeTaxExaminationAmountofDisputedAssessmentPaid" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_OtherLeaseCost" abstract="false" name="OtherLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_ModifiedSharingArrangementMember" abstract="true" name="ModifiedSharingArrangementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_VariationMarginPostedReturned" abstract="false" name="VariationMarginPostedReturned" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_SeniorNotesDueInDecember2029At355PercentMember" abstract="true" name="SeniorNotesDueInDecember2029At355PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_LossContingencyExceededInsuranceCoverageLimit" abstract="false" name="LossContingencyExceededInsuranceCoverageLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_MeasurementInputMarketMultipleMember" abstract="true" name="MeasurementInputMarketMultipleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ModifiedSharingArrangementAnnualAvailableCashAxis" abstract="true" name="ModifiedSharingArrangementAnnualAvailableCashAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="paa_DepreciationAndAmortizationOfUnconsolidatedEntities" abstract="false" name="DepreciationAndAmortizationOfUnconsolidatedEntities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_SeniorNotesDueInOctober2025At465PercentMember" abstract="true" name="SeniorNotesDueInOctober2025At465PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_FuelGasRequirementsContractsMember" abstract="true" name="FuelGasRequirementsContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_IncomeSubjectToForeignTax" abstract="false" name="IncomeSubjectToForeignTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_PartnersCapitalAccountSaleOfUnitsPricePerUnit" abstract="false" name="PartnersCapitalAccountSaleOfUnitsPricePerUnit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="paa_CondensateContractsRelatedToSubsequentSaleOfProductMember" abstract="true" name="CondensateContractsRelatedToSubsequentSaleOfProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ContractsRelatedToCrudeOilPurchasesMember" abstract="true" name="ContractsRelatedToCrudeOilPurchasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_LitigationSettlementAmountAgreedUponSubjectToApproval" abstract="false" name="LitigationSettlementAmountAgreedUponSubjectToApproval" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_OtherEquityMethodInvestmentMember" abstract="true" name="OtherEquityMethodInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_InventoryWeightedAveragePricePerUnitNoncurrent" abstract="false" name="InventoryWeightedAveragePricePerUnitNoncurrent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
  <xs:element id="paa_OryxMidstreamHoldingsLLCMember" abstract="true" name="OryxMidstreamHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_AnticipatedNetSalesOfInventoryMember" abstract="true" name="AnticipatedNetSalesOfInventoryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_ContractWithCustomerLiabilityRevenueRecognitionTerm" abstract="false" name="ContractWithCustomerLiabilityRevenueRecognitionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="paa_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentInUnconsolidatedEntities" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentInUnconsolidatedEntities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_SeriesBPreferredUnitsMember" abstract="true" name="SeriesBPreferredUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_InventoryWeightedAveragePricePerUnitCurrent" abstract="false" name="InventoryWeightedAveragePricePerUnitCurrent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
  <xs:element id="paa_EightForwardStartingThirtyYearInterestRateSwaps309PercentMember" abstract="true" name="EightForwardStartingThirtyYearInterestRateSwaps309PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_EstimatedSizeOfRelease" abstract="false" name="EstimatedSizeOfRelease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:volumeItemType"/>
  <xs:element id="paa_SeniorNotesDueInNovember2024At360PercentMember" abstract="true" name="SeniorNotesDueInNovember2024At360PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_EquityIndexedCompensationExpenseAwardsThatWillOrMayBeSettledInUnits" abstract="false" name="EquityIndexedCompensationExpenseAwardsThatWillOrMayBeSettledInUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_BridgeTexPipelineCompanyLLCMember" abstract="true" name="BridgeTexPipelineCompanyLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_SegmentAmountsAttributableToNoncontrollingInterests" abstract="false" name="SegmentAmountsAttributableToNoncontrollingInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_BPPlcAndSubsidiariesMember" abstract="true" name="BPPlcAndSubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_DeficienciesUnderMinimumVolumeCommitmentsNet" abstract="false" name="DeficienciesUnderMinimumVolumeCommitmentsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_AdvantagePipelineHoldingsLLCMember" abstract="true" name="AdvantagePipelineHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_EstimatedSizeOfReleaseToReachBodyOfWater" abstract="false" name="EstimatedSizeOfReleaseToReachBodyOfWater" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:volumeItemType"/>
  <xs:element id="paa_NetIncomeLossAllocatedToCommonUnitholdersBasic" abstract="false" name="NetIncomeLossAllocatedToCommonUnitholdersBasic" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_SeniorNotesDueInJanuary2023At285PercentMember" abstract="true" name="SeniorNotesDueInJanuary2023At285PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_GainslossesOnInvestmentsInUnconsolidatedEntitiesNetMember" abstract="true" name="GainslossesOnInvestmentsInUnconsolidatedEntitiesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_IncomeNotSubjectToForeignTax" abstract="false" name="IncomeNotSubjectToForeignTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_LongTermDebtWeightedAverageMaturity" abstract="false" name="LongTermDebtWeightedAverageMaturity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="paa_ModifiedSharingArrangementDistributionPercentage" abstract="false" name="ModifiedSharingArrangementDistributionPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="paa_NetIncomeLossAllocatedToCommonUnitholdersDiluted" abstract="false" name="NetIncomeLossAllocatedToCommonUnitholdersDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_PowerSupplyRequirementsContractsMember" abstract="true" name="PowerSupplyRequirementsContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_SeniorUnsecuredRevolvingCreditFacilityMaturitingInAugust2027Member" abstract="true" name="SeniorUnsecuredRevolvingCreditFacilityMaturitingInAugust2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="paa_BasicAndDilutedNetIncomePerCommonUnitLineItems" abstract="true" name="BasicAndDilutedNetIncomePerCommonUnitLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="paa_FourthQuarterDistributionMember" abstract="true" name="FourthQuarterDistributionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_LongTermInventoryCostingAdjustments" abstract="false" name="LongTermInventoryCostingAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" abstract="false" name="ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="paa_TransportationMember" abstract="true" name="TransportationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="paa_CertainStraddlePlantsMember" abstract="true" name="CertainStraddlePlantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
