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  <xsd:element name="FeesPaidAndRelatedPartyTransactionsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_FeesPaidAndRelatedPartyTransactionsAbstract" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock" name="FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract" substitutionGroup="xbrli:item" />
  <xsd:element name="FinancialHighlightsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_FinancialHighlightsAbstract" substitutionGroup="xbrli:item" />
  <xsd:element name="NetAssetValuePolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_NetAssetValuePolicyTextBlock" substitutionGroup="xbrli:item" />
  <xsd:element name="OtherOperatingIncomeExpensePolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_OtherOperatingIncomeExpensePolicyTextBlock" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_BrokerageCommissionsTableTextBlock" name="BrokerageCommissionsTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="usl_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock" name="PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" substitutionGroup="xbrldt:hypercubeItem" />
  <xsd:element name="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" substitutionGroup="xbrli:item" />
  <xsd:element name="NumberOfUnitsPerBasket" type="srt-types:perUnitItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="usl_NumberOfUnitsPerBasket" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_FeePaidPerOrder" name="FeePaidPerOrder" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element name="UnitsIssuedDuringPeriodUnitsNewIssues" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_UnitsIssuedDuringPeriodUnitsNewIssues" substitutionGroup="xbrli:item" />
  <xsd:element name="UnitsIssuedDuringPeriodValueNewIssues" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_UnitsIssuedDuringPeriodValueNewIssues" substitutionGroup="xbrli:item" xbrli:balance="credit" />
  <xsd:element id="usl_NumberOfRegisteredUnits" name="NumberOfRegisteredUnits" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element name="SignificantAccountingPoliciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_SignificantAccountingPoliciesTable" substitutionGroup="xbrldt:hypercubeItem" />
  <xsd:element name="SignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_SignificantAccountingPoliciesLineItems" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_NumberOfSharesPerBasket" name="NumberOfSharesPerBasket" nillable="true" type="srt-types:perUnitItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element name="FundTrustsMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_FundTrustsMember" substitutionGroup="xbrli:item" />
  <xsd:element name="GroupThreeMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_GroupThreeMember" substitutionGroup="xbrli:item" />
  <xsd:element name="FeesPaidAndRelatedPartyTransactionsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_FeesPaidAndRelatedPartyTransactionsLineItems" substitutionGroup="xbrli:item" />
  <xsd:element name="BaseFeePercentage" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_BaseFeePercentage" substitutionGroup="xbrli:item" />
  <xsd:element name="RebalancingInvestmentsTransactionMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_RebalancingInvestmentsTransactionMember" substitutionGroup="xbrli:item" />
  <xsd:element name="TradesNecessitatedByCreationAndRedemptionActivityMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_TradesNecessitatedByCreationAndRedemptionActivityMember" substitutionGroup="xbrli:item" />
  <xsd:element name="PercentageOfAverageDailyNetAssets" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="usl_PercentageOfAverageDailyNetAssets" substitutionGroup="xbrli:item" />
  <xsd:element name="BasisAmountForFeePercentage" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="usl_BasisAmountForFeePercentage" substitutionGroup="xbrli:item" xbrli:balance="credit" />
  <xsd:element name="CommissionsPaid" type="srt-types:perUnitItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_CommissionsPaid" substitutionGroup="xbrli:item" />
  <xsd:element name="MarketingAgreementMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_MarketingAgreementMember" substitutionGroup="xbrli:item" />
  <xsd:element name="GroupFourMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_GroupFourMember" substitutionGroup="xbrli:item" />
  <xsd:element name="GroupFiveMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_GroupFiveMember" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_RateOfReturnOnAverageAsset" name="RateOfReturnOnAverageAsset" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="AverageNetAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_AverageNetAssetsAbstract" substitutionGroup="xbrli:item" />
  <xsd:element name="PercentageOfTotalRevenue" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_PercentageOfTotalRevenue" substitutionGroup="xbrli:item" />
  <xsd:element name="ManagementIncentiveFeePercentage" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_ManagementIncentiveFeePercentage" substitutionGroup="xbrli:item" />
  <xsd:element name="PercentageOfConsolidatedNetIncomeLoss" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_PercentageOfConsolidatedNetIncomeLoss" substitutionGroup="xbrli:item" />
  <xsd:element name="TotalExpensesPerUnit" type="dtr-types:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_TotalExpensesPerUnit" substitutionGroup="xbrli:item" />
  <xsd:element name="IncreaseDecreaseInNetAssetValuePerUnit" type="dtr-types:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_IncreaseDecreaseInNetAssetValuePerUnit" substitutionGroup="xbrli:item" />
  <xsd:element name="TotalIncomeLossPerUnit" type="dtr-types:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_TotalIncomeLossPerUnit" substitutionGroup="xbrli:item" />
  <xsd:element name="ClosedPositionsMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_ClosedPositionsMember" substitutionGroup="xbrli:item" />
  <xsd:element name="OpenPositionMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_OpenPositionMember" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_PercentageOfManagementFeeInAverageDailyTotalNetAssets" name="PercentageOfManagementFeeInAverageDailyTotalNetAssets" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="usl_TotalExpenses" name="TotalExpenses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="usl_CashAndCashEquivalentsInTradingAccounts" name="CashAndCashEquivalentsInTradingAccounts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="usl_CreationBasketsMember" name="CreationBasketsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="usl_NumberOfLongTermFuturesContracts" name="NumberOfLongTermFuturesContracts" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" abstract="false" />
  <xsd:element id="usl_IncreaseDecreaseInPrepaidRegistrationFees" name="IncreaseDecreaseInPrepaidRegistrationFees" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="usl_IncreaseDecreaseInRegistrationFeesPayable" name="IncreaseDecreaseInRegistrationFeesPayable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="usl_TotalExpensesExcludingManagementFeePercentage" name="TotalExpensesExcludingManagementFeePercentage" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="usl_RegistrationFeesPayableCurrentAndNoncurrent" name="RegistrationFeesPayableCurrentAndNoncurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element name="NymexWtiCrudeOilFuturesAugust2022ContractsExpiringJuly2022Member" id="usl_NymexWtiCrudeOilFuturesAugust2022ContractsExpiringJuly2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesSeptember2022ContractsExpiringAugust2022Member" id="usl_NymexWtiCrudeOilFuturesSeptember2022ContractsExpiringAugust2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesOctober2022ContractsExpiringSeptember2022Member" id="usl_NymexWtiCrudeOilFuturesOctober2022ContractsExpiringSeptember2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IncreaseDecreaseInPrepaidLicenseFees" id="usl_IncreaseDecreaseInPrepaidLicenseFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="NymexWtiCrudeOilFuturesFebruary2023ContractsExpiringJanuary2023Member" id="usl_NymexWtiCrudeOilFuturesFebruary2023ContractsExpiringJanuary2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesMarch2023ContractsExpiringFebruary2023Member" id="usl_NymexWtiCrudeOilFuturesMarch2023ContractsExpiringFebruary2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesApril2023ContractsExpiringMarch2023Member" id="usl_NymexWtiCrudeOilFuturesApril2023ContractsExpiringMarch2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesNovember2022ContractsExpiringOctober2022Member" id="usl_NymexWtiCrudeOilFuturesNovember2022ContractsExpiringOctober2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesJanuary2023ContractsExpiringDecember2022Member" id="usl_NymexWtiCrudeOilFuturesJanuary2023ContractsExpiringDecember2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesDecember2022ContractsExpiringNovember2022Member" id="usl_NymexWtiCrudeOilFuturesDecember2022ContractsExpiringNovember2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrepaidLicenseFees" id="usl_PrepaidLicenseFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NymexWtiCrudeOilFuturesMay2023ContractsExpiringApril2023Member" id="usl_NymexWtiCrudeOilFuturesMay2023ContractsExpiringApril2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesJune2023ContractsExpiringMay2023Member" id="usl_NymexWtiCrudeOilFuturesJune2023ContractsExpiringMay2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesJuly2023ContractsExpiringJune2023Member" id="usl_NymexWtiCrudeOilFuturesJuly2023ContractsExpiringJune2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DreyfusInstitutionalPreferredGovernmentMoneyMarketFundInstitutionalSharesMember" id="usl_DreyfusInstitutionalPreferredGovernmentMoneyMarketFundInstitutionalSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
