<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with WebFilings-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.nobleenergyinc.com/20131231" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nbl="http://www.nobleenergyinc.com/20131231" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:us-types="http://fasb.org/us-types/2013-01-31" 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/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-roles-2013-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-types-2013-01-31.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/2013-01-31" schemaLocation="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2012-01-31" schemaLocation="http://xbrl.sec.gov/currency/2012/currency-2012-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2013-01-31" schemaLocation="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2013-01-31" schemaLocation="http://xbrl.sec.gov/exch/2013/exch-2013-01-31.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="nbl-20131231_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="nbl-20131231_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="nbl-20131231_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="nbl-20131231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="AdditionalFinancialStatementInformation" roleURI="http://www.nobleenergyinc.com/role/AdditionalFinancialStatementInformation">
        <link:definition>2102100 - Disclosure - Additional Financial Statement 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="AdditionalFinancialStatementInformationDetails" roleURI="http://www.nobleenergyinc.com/role/AdditionalFinancialStatementInformationDetails">
        <link:definition>2402402 - Disclosure - Additional Financial Statement 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="AdditionalFinancialStatementInformationDetails2" roleURI="http://www.nobleenergyinc.com/role/AdditionalFinancialStatementInformationDetails2">
        <link:definition>2402403 - Disclosure - Additional Financial Statement Information (Details 2)</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="AdditionalFinancialStatementInformationTables" roleURI="http://www.nobleenergyinc.com/role/AdditionalFinancialStatementInformationTables">
        <link:definition>2302301 - Disclosure - Additional Financial Statement 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="AdditionalShareholdersEquityInformation" roleURI="http://www.nobleenergyinc.com/role/AdditionalShareholdersEquityInformation">
        <link:definition>2119100 - Disclosure - Additional Shareholders' Equity 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="AdditionalShareholdersEquityInformationDetails" roleURI="http://www.nobleenergyinc.com/role/AdditionalShareholdersEquityInformationDetails">
        <link:definition>2419402 - Disclosure - Additional Shareholders' Equity 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="AdditionalShareholdersEquityInformationTables" roleURI="http://www.nobleenergyinc.com/role/AdditionalShareholdersEquityInformationTables">
        <link:definition>2319301 - Disclosure - Additional Shareholders' Equity 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="AllowanceForDoubtfulAccounts" roleURI="http://www.nobleenergyinc.com/role/AllowanceForDoubtfulAccounts">
        <link:definition>2105100 - Disclosure - Allowance for Doubtful Accounts</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="AllowanceForDoubtfulAccountsDetails" roleURI="http://www.nobleenergyinc.com/role/AllowanceForDoubtfulAccountsDetails">
        <link:definition>2405402 - Disclosure - Allowance for Doubtful Accounts (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="AllowanceForDoubtfulAccountsTables" roleURI="http://www.nobleenergyinc.com/role/AllowanceForDoubtfulAccountsTables">
        <link:definition>2305301 - Disclosure - Allowance for Doubtful Accounts (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="AssetImpairmentsDetails" roleURI="http://www.nobleenergyinc.com/role/AssetImpairmentsDetails">
        <link:definition>2404402 - Disclosure - Asset Impairments (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="AssetImpairmentsNotes" roleURI="http://www.nobleenergyinc.com/role/AssetImpairmentsNotes">
        <link:definition>2104100 - Disclosure - Asset Impairments (Notes)</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="AssetImpairmentsTables" roleURI="http://www.nobleenergyinc.com/role/AssetImpairmentsTables">
        <link:definition>2304301 - Disclosure - Asset Impairments (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="AssetRetirementObligations" roleURI="http://www.nobleenergyinc.com/role/AssetRetirementObligations">
        <link:definition>2111100 - 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="AssetRetirementObligationsDetails" roleURI="http://www.nobleenergyinc.com/role/AssetRetirementObligationsDetails">
        <link:definition>2411402 - Disclosure - 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.nobleenergyinc.com/role/AssetRetirementObligationsTables">
        <link:definition>2311301 - 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="CapitalizedExploratoryWellCosts" roleURI="http://www.nobleenergyinc.com/role/CapitalizedExploratoryWellCosts">
        <link:definition>2107100 - Disclosure - Capitalized Exploratory Well Costs</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="CapitalizedExploratoryWellCostsDetails" roleURI="http://www.nobleenergyinc.com/role/CapitalizedExploratoryWellCostsDetails">
        <link:definition>2407402 - Disclosure - Capitalized Exploratory Well Costs (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="CapitalizedExploratoryWellCostsDetails2" roleURI="http://www.nobleenergyinc.com/role/CapitalizedExploratoryWellCostsDetails2">
        <link:definition>2407403 - Disclosure - Capitalized Exploratory Well Costs (Details 2)</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="CapitalizedExploratoryWellCostsTables" roleURI="http://www.nobleenergyinc.com/role/CapitalizedExploratoryWellCostsTables">
        <link:definition>2307301 - Disclosure - Capitalized Exploratory Well Costs (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.nobleenergyinc.com/role/CommitmentsAndContingencies">
        <link:definition>2120100 - 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="CommitmentsAndContingenciesCommitmentsAndContingenciesTables" roleURI="http://www.nobleenergyinc.com/role/CommitmentsAndContingenciesCommitmentsAndContingenciesTables">
        <link:definition>2320301 - Disclosure - Commitments and Contingencies Commitments and Contingencies (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="CommitmentsAndContingenciesDetails" roleURI="http://www.nobleenergyinc.com/role/CommitmentsAndContingenciesDetails">
        <link:definition>2420402 - Disclosure - Commitments and Contingencies (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="ConcentrationOfRisk" roleURI="http://www.nobleenergyinc.com/role/ConcentrationOfRisk">
        <link:definition>2118100 - Disclosure - Concentration of Risk</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="ConcentrationOfRiskDetails" roleURI="http://www.nobleenergyinc.com/role/ConcentrationOfRiskDetails">
        <link:definition>2418402 - Disclosure - Concentration of Risk (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="ConcentrationOfRiskTables" roleURI="http://www.nobleenergyinc.com/role/ConcentrationOfRiskTables">
        <link:definition>2318301 - Disclosure - Concentration of Risk (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="ConsolidatedBalanceSheets" roleURI="http://www.nobleenergyinc.com/role/ConsolidatedBalanceSheets">
        <link:definition>1003000 - Statement - Consolidated Balance Sheets</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="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.nobleenergyinc.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1003501 - Statement - Consolidated Balance Sheets (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="ConsolidatedStatementsOfCashFlows" roleURI="http://www.nobleenergyinc.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - Consolidated Statements of Cash Flows</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="ConsolidatedStatementsOfComprehensiveIncome" roleURI="http://www.nobleenergyinc.com/role/ConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>1002000 - Statement - Consolidated Statements of Comprehensive Income</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="ConsolidatedStatementsOfOperations" roleURI="http://www.nobleenergyinc.com/role/ConsolidatedStatementsOfOperations">
        <link:definition>1001000 - Statement - Consolidated Statements of Operations</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="ConsolidatedStatementsOfShareholdersEquity" roleURI="http://www.nobleenergyinc.com/role/ConsolidatedStatementsOfShareholdersEquity">
        <link:definition>1005000 - Statement - Consolidated Statements of Shareholders' Equity</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="ConsolidatedStatementsOfShareholdersEquityParenthetical" roleURI="http://www.nobleenergyinc.com/role/ConsolidatedStatementsOfShareholdersEquityParenthetical">
        <link:definition>1005501 - Statement - Consolidated Statements of Shareholders' Equity (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="DerivativeInstrumentsAndHedgingActivities" roleURI="http://www.nobleenergyinc.com/role/DerivativeInstrumentsAndHedgingActivities">
        <link:definition>2110100 - Disclosure - Derivative Instruments and Hedging Activities</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="DerivativeInstrumentsAndHedgingActivitiesDetails" roleURI="http://www.nobleenergyinc.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails">
        <link:definition>2410402 - Disclosure - Derivative Instruments and Hedging Activities (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="DerivativeInstrumentsAndHedgingActivitiesDetails2" roleURI="http://www.nobleenergyinc.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails2">
        <link:definition>2410403 - Disclosure - Derivative Instruments and Hedging Activities (Details 2)</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="DerivativeInstrumentsAndHedgingActivitiesDetails3" roleURI="http://www.nobleenergyinc.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails3">
        <link:definition>2410404 - Disclosure - Derivative Instruments and Hedging Activities (Details 3)</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="DerivativeInstrumentsAndHedgingActivitiesTables" roleURI="http://www.nobleenergyinc.com/role/DerivativeInstrumentsAndHedgingActivitiesTables">
        <link:definition>2310301 - Disclosure - Derivative Instruments and Hedging Activities (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.nobleenergyinc.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="EarningsPerShare" roleURI="http://www.nobleenergyinc.com/role/EarningsPerShare">
        <link:definition>2116100 - Disclosure - Earnings 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="EarningsPerShareDetails" roleURI="http://www.nobleenergyinc.com/role/EarningsPerShareDetails">
        <link:definition>2416402 - Disclosure - Earnings Per Share (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="EarningsPerShareTables" roleURI="http://www.nobleenergyinc.com/role/EarningsPerShareTables">
        <link:definition>2316301 - Disclosure - Earnings 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="EquityMethodInvestments" roleURI="http://www.nobleenergyinc.com/role/EquityMethodInvestments">
        <link:definition>2108100 - Disclosure - Equity Method Investments</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="EquityMethodInvestmentsDetails" roleURI="http://www.nobleenergyinc.com/role/EquityMethodInvestmentsDetails">
        <link:definition>2408402 - Disclosure - Equity Method Investments (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="EquityMethodInvestmentsTables" roleURI="http://www.nobleenergyinc.com/role/EquityMethodInvestmentsTables">
        <link:definition>2308301 - Disclosure - Equity Method Investments (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="FairValueMeasurementsAndDisclosures" roleURI="http://www.nobleenergyinc.com/role/FairValueMeasurementsAndDisclosures">
        <link:definition>2115100 - Disclosure - Fair Value Measurements and Disclosures</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="FairValueMeasurementsAndDisclosuresDetails3" roleURI="http://www.nobleenergyinc.com/role/FairValueMeasurementsAndDisclosuresDetails3">
        <link:definition>2415404 - Disclosure - Fair Value Measurements and Disclosures (Details 3)</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="FairValueMeasurementsAndDisclosuresOfAssetsAndLiabilitiesMeasuredOnNonrecurringBasisDetails2" roleURI="http://www.nobleenergyinc.com/role/FairValueMeasurementsAndDisclosuresOfAssetsAndLiabilitiesMeasuredOnNonrecurringBasisDetails2">
        <link:definition>2415403 - Disclosure - Fair Value Measurements and Disclosures of Assets and Liabilities Measured on a Nonrecurring Basis (Details 2)</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="FairValueMeasurementsAndDisclosuresOfAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails" roleURI="http://www.nobleenergyinc.com/role/FairValueMeasurementsAndDisclosuresOfAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails">
        <link:definition>2415402 - Disclosure - Fair Value Measurements and Disclosures of Assets and Liabilities Measured on a 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="FairValueMeasurementsAndDisclosuresTables" roleURI="http://www.nobleenergyinc.com/role/FairValueMeasurementsAndDisclosuresTables">
        <link:definition>2315301 - Disclosure - Fair Value Measurements and Disclosures (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.nobleenergyinc.com/role/IncomeTaxes">
        <link:definition>2113100 - 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="IncomeTaxesDetails" roleURI="http://www.nobleenergyinc.com/role/IncomeTaxesDetails">
        <link:definition>2413402 - Disclosure - Income Taxes (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="IncomeTaxesIncomeTaxesDetails2" roleURI="http://www.nobleenergyinc.com/role/IncomeTaxesIncomeTaxesDetails2">
        <link:definition>2413403 - Disclosure - Income Taxes Income Taxes (Details 2)</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="IncomeTaxesTables" roleURI="http://www.nobleenergyinc.com/role/IncomeTaxesTables">
        <link:definition>2313301 - Disclosure - Income Taxes (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.nobleenergyinc.com/role/LongTermDebt">
        <link:definition>2112100 - 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="LongTermDebtDetails" roleURI="http://www.nobleenergyinc.com/role/LongTermDebtDetails">
        <link:definition>2412402 - Disclosure - 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.nobleenergyinc.com/role/LongTermDebtTables">
        <link:definition>2312301 - 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="PropertyTransactions" roleURI="http://www.nobleenergyinc.com/role/PropertyTransactions">
        <link:definition>2103100 - Disclosure - Property Transactions</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="PropertyTransactionsNarrativeDetails" roleURI="http://www.nobleenergyinc.com/role/PropertyTransactionsNarrativeDetails">
        <link:definition>2403402 - Disclosure - Property Transactions  Narrative (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="PropertyTransactionsPropertyTransactionsDiscontinuedOperationsDetails" roleURI="http://www.nobleenergyinc.com/role/PropertyTransactionsPropertyTransactionsDiscontinuedOperationsDetails">
        <link:definition>2403403 - Disclosure - Property Transactions Property Transactions - Discontinued 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="PropertyTransactionsPropertyTransactionsSalesTransactionsDetails" roleURI="http://www.nobleenergyinc.com/role/PropertyTransactionsPropertyTransactionsSalesTransactionsDetails">
        <link:definition>2403404 - Disclosure - Property Transactions Property Transactions - Sales Transactions (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="PropertyTransactionsTables" roleURI="http://www.nobleenergyinc.com/role/PropertyTransactionsTables">
        <link:definition>2303301 - Disclosure - Property Transactions (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="SegmentInformation" roleURI="http://www.nobleenergyinc.com/role/SegmentInformation">
        <link:definition>2117100 - Disclosure - 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="SegmentInformationDetails" roleURI="http://www.nobleenergyinc.com/role/SegmentInformationDetails">
        <link:definition>2417402 - Disclosure - Segment 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="SegmentInformationTables" roleURI="http://www.nobleenergyinc.com/role/SegmentInformationTables">
        <link:definition>2317301 - Disclosure - 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="StockBasedCompensation" roleURI="http://www.nobleenergyinc.com/role/StockBasedCompensation">
        <link:definition>2114100 - 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="StockBasedCompensationDetails" roleURI="http://www.nobleenergyinc.com/role/StockBasedCompensationDetails">
        <link:definition>2414402 - Disclosure - Stock-Based Compensation (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="StockBasedCompensationDetails2" roleURI="http://www.nobleenergyinc.com/role/StockBasedCompensationDetails2">
        <link:definition>2414403 - Disclosure - Stock-Based Compensation (Details 2)</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="StockBasedCompensationDetails4" roleURI="http://www.nobleenergyinc.com/role/StockBasedCompensationDetails4">
        <link:definition>2414405 - Disclosure - Stock-Based Compensation (Details 4)</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="StockBasedCompensationStockBasedCompensationDetails3" roleURI="http://www.nobleenergyinc.com/role/StockBasedCompensationStockBasedCompensationDetails3">
        <link:definition>2414404 - Disclosure - Stock-Based Compensation Stock-Based Compensation (Details 3)</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="StockBasedCompensationStockBasedCompensationDetails5" roleURI="http://www.nobleenergyinc.com/role/StockBasedCompensationStockBasedCompensationDetails5">
        <link:definition>2414406 - Disclosure - Stock-Based Compensation Stock-Based Compensation (Details 5)</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.nobleenergyinc.com/role/StockBasedCompensationTables">
        <link:definition>2314301 - 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="SummaryOfSignificantAccountingPolicies" roleURI="http://www.nobleenergyinc.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2101100 - 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="SummaryOfSignificantAccountingPoliciesDetails" roleURI="http://www.nobleenergyinc.com/role/SummaryOfSignificantAccountingPoliciesDetails">
        <link:definition>2401402 - Disclosure - Summary of Significant Accounting Policies (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="SummaryOfSignificantAccountingPoliciesDetails2" roleURI="http://www.nobleenergyinc.com/role/SummaryOfSignificantAccountingPoliciesDetails2">
        <link:definition>2401403 - Disclosure - Summary of Significant Accounting Policies (Details 2)</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.nobleenergyinc.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2201201 - 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 abstract="true" id="nbl_AccumulatedNetGainLossFromDesignatedOrQualifyingInterestRateCashFlowHedgesMember" name="AccumulatedNetGainLossFromDesignatedOrQualifyingInterestRateCashFlowHedgesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_AccumulatedNetLossFromPensionRelatedAndOtherMember" name="AccumulatedNetLossFromPensionRelatedAndOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_AccumulatedUndistributedEarningsOfForeignSubsidiariesAbstract" name="AccumulatedUndistributedEarningsOfForeignSubsidiariesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_AdditionalFinancialStatementInformationAbstract" name="AdditionalFinancialStatementInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_AdditionalShareholdersEquityInformationAbstract" name="AdditionalShareholdersEquityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_AlbaPlantMember" name="AlbaPlantMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_AllowanceForDoubtfulAccountsAbstract" name="AllowanceForDoubtfulAccountsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_AmountOfGainLossOnDerivativeInstrumentsRecognizedInOtherComprehensiveIncomeLoss" name="AmountOfGainLossOnDerivativeInstrumentsRecognizedInOtherComprehensiveIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_AmpcoMember" name="AmpcoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_AoclAmountNetOfTaxToBeReclassifiedToInterestExpenseOverLifeOfDebt" name="AoclAmountNetOfTaxToBeReclassifiedToInterestExpenseOverLifeOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="nbl_AoclAmountNetOfTaxToBeReclassifiedToInterestExpenseOverLifeOfDebtOriginalAmount" name="AoclAmountNetOfTaxToBeReclassifiedToInterestExpenseOverLifeOfDebtOriginalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="nbl_AssetImpairments" name="AssetImpairments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="nbl_AssetRetirementObligationAssetsSold" name="AssetRetirementObligationAssetsSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_AssetRetirementObligationOther" name="AssetRetirementObligationOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_AssetsNetOfAhfs" name="AssetsNetOfAhfs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_BasisOfPresentationAbstract" name="BasisOfPresentationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_BusinessAcquisitionPurchasePriceAllocationProvedOilAndGasProperties" name="BusinessAcquisitionPurchasePriceAllocationProvedOilAndGasProperties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="nbl_BusinessAcquisitionPurchasePriceAllocationUnprovedOilAndGasProperties" name="BusinessAcquisitionPurchasePriceAllocationUnprovedOilAndGasProperties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="nbl_BusinessCombinationLandExchangedInAgreement" name="BusinessCombinationLandExchangedInAgreement" nillable="true" substitutionGroup="xbrli:item" type="num:areaItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_BusinessCombinationReimbursementofCapitalExpendituresandClosingAdjustmentsCashReceived" name="BusinessCombinationReimbursementofCapitalExpendituresandClosingAdjustmentsCashReceived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_CapitalizedExploratoryWellCostOther" name="CapitalizedExploratoryWellCostOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CapitalizedExploratoryWellCostsAgingAbstract" name="CapitalizedExploratoryWellCostsAgingAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CarlaOffshoreEquatorialGuineaMember" name="CarlaOffshoreEquatorialGuineaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ChangeinStatutoryFederalTaxRateAbstract" name="ChangeinStatutoryFederalTaxRateAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ChangeinStockholderEquityDuetoShareholderAmendmentLineItems" name="ChangeinStockholderEquityDuetoShareholderAmendmentLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ChangeinStockholderEquityDuetoShareholderAmendmentTable" name="ChangeinStockholderEquityDuetoShareholderAmendmentTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ChangesinStockholdersEquityAbstract" name="ChangesinStockholdersEquityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CommonStockSharesIssuedRollForward" name="CommonStockSharesIssuedRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CommonStockSplitAbstract" name="CommonStockSplitAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ComponentsAndChangesInAccumulatedOtherComprehensiveIncomeLineItems" name="ComponentsAndChangesInAccumulatedOtherComprehensiveIncomeLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ComponentsAndChangesInAccumulatedOtherComprehensiveIncomeTable" name="ComponentsAndChangesInAccumulatedOtherComprehensiveIncomeTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ComponentsOfAccumulatedOtherComprehensiveIncomeAxis" name="ComponentsOfAccumulatedOtherComprehensiveIncomeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ComponentsOfAccumulatedOtherComprehensiveIncomeDomain" name="ComponentsOfAccumulatedOtherComprehensiveIncomeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ConcentrationOfCreditRiskAbstract" name="ConcentrationOfCreditRiskAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ConcentrationOfRiskAbstract" name="ConcentrationOfRiskAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ConcentrationRiskPercentageOfCrudeOilSales" name="ConcentrationRiskPercentageOfCrudeOilSales" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_ConcentrationRiskPercentageOfTotalOilAndGasSales" name="ConcentrationRiskPercentageOfTotalOilAndGasSales" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_ConeGatheringLlcMember" name="ConeGatheringLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ConsolMember" name="ConsolMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CoreOperatingFieldMember" name="CoreOperatingFieldMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_CreditFacilityAggregateShortTermLoansAndLettersOfCreditMaximum" name="CreditFacilityAggregateShortTermLoansAndLettersOfCreditMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="nbl_CreditFacilityCovenantTermDebtToCapitalizationRatioMaximum" name="CreditFacilityCovenantTermDebtToCapitalizationRatioMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_CreditFacilityFeeRateBasisPointsMaximum" name="CreditFacilityFeeRateBasisPointsMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_CreditFacilityFeeRateBasisPointsMinimum" name="CreditFacilityFeeRateBasisPointsMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_CreditFacilityInterestRateEurodollarRatePlusMaximum" name="CreditFacilityInterestRateEurodollarRatePlusMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_CreditFacilityInterestRateEurodollarRatePlusMinimum" name="CreditFacilityInterestRateEurodollarRatePlusMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_CrudeOilCommodityContractMember" name="CrudeOilCommodityContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CurrentLiabilitiesMember" name="CurrentLiabilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CustomerConcentrationRiskGlencoreEnergyMember" name="CustomerConcentrationRiskGlencoreEnergyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CustomerConcentrationRiskShellUsCompanyMember" name="CustomerConcentrationRiskShellUsCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_CyprusA1OffshoreCyprusMember" name="CyprusA1OffshoreCyprusMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DalitIsraelMember" name="DalitIsraelMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DebtAbstract" name="DebtAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DebtIssuanceProceedsUsedToExtinguishOutstandingDebt" name="DebtIssuanceProceedsUsedToExtinguishOutstandingDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DeepwaterGulfOfMexicoMember" name="DeepwaterGulfOfMexicoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DeepwaterGulfOfMexicoMoratoriumExpense" name="DeepwaterGulfOfMexicoMoratoriumExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="nbl_DeferredCompensationArrangementMostSharesHeldByIndividual" name="DeferredCompensationArrangementMostSharesHeldByIndividual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_DeferredCompensationArrangementMostSharesHeldByIndividualPercentage" name="DeferredCompensationArrangementMostSharesHeldByIndividualPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_DeferredCompensationArrangementMutualFundInvestments" name="DeferredCompensationArrangementMutualFundInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="nbl_DeferredCompensationArrangementPlanDistributionAmount" name="DeferredCompensationArrangementPlanDistributionAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DeferredCompensationArrangementSharesSold" name="DeferredCompensationArrangementSharesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DeferredCompensationArrangementsTrustPlanDistributionAmount" name="DeferredCompensationArrangementsTrustPlanDistributionAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_DeferredCompensationDistributionTimeline" name="DeferredCompensationDistributionTimeline" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DeferredCompensatoinPlanAdditionalInformationAbstract" name="DeferredCompensatoinPlanAdditionalInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DeferredTaxAssetAndLiabilityBalanceSheetClassificationTableTextBlock" name="DeferredTaxAssetAndLiabilityBalanceSheetClassificationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DeferredTaxLiabilityRelease" name="DeferredTaxLiabilityRelease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="nbl_DepreciationDepletionAndAmortizationIncludingDiscontinuedOperations" name="DepreciationDepletionAndAmortizationIncludingDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DerivativeByRiskAxis" name="DerivativeByRiskAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DerivativeByRiskDomain" name="DerivativeByRiskDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DerivativeInstrumentsAndHedgingActivitiesAbstract" name="DerivativeInstrumentsAndHedgingActivitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DerivativeInstrumentsInCashFlowHedingRelationshipsAbstract" name="DerivativeInstrumentsInCashFlowHedingRelationshipsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DerivativeProductionPeriod" name="DerivativeProductionPeriod" nillable="true" substitutionGroup="xbrli:item" type="us-types:dateStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DiegaOffshoreEquatorialGuineaMember" name="DiegaOffshoreEquatorialGuineaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DisposalGroupIncludingDiscontinuedOperationNetBookValue" name="DisposalGroupIncludingDiscontinuedOperationNetBookValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="nbl_DisposalGroupNotDiscontinuedOperationOtherLiabilities" name="DisposalGroupNotDiscontinuedOperationOtherLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_Dolphin1OffshoreIsraelMember" name="Dolphin1OffshoreIsraelMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_DrillingEquipmentAndPurchaseCommitmentsMember" name="DrillingEquipmentAndPurchaseCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_DurationofDividends" name="DurationofDividends" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_EarningsPerShareAdditionalInformationAbstract" name="EarningsPerShareAdditionalInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_EasternMediterraneanMember" name="EasternMediterraneanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_EffectiveIncomeTaxRateReconciliationDeductionOilProfitsTaxinForeignCountry" name="EffectiveIncomeTaxRateReconciliationDeductionOilProfitsTaxinForeignCountry" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_EffectiveTaxRateReconcilingItemsAbstract" name="EffectiveTaxRateReconcilingItemsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_EquityMethodInvestmentSummarizedFinancialInformationAssetsAndLiabilitiesAbstract" name="EquityMethodInvestmentSummarizedFinancialInformationAssetsAndLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLossBeforeTaxes" name="EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLossBeforeTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_EquityMethodInvestmentSummarizedFinancialInformationOtherIncomeNet" name="EquityMethodInvestmentSummarizedFinancialInformationOtherIncomeNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_EquityMethodInvestmentSummarizedFinancialInformationProvisionForIncomeTaxes" name="EquityMethodInvestmentSummarizedFinancialInformationProvisionForIncomeTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_EquityMethodInvestmentsAbstract" name="EquityMethodInvestmentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ExitFromEcuadorMember" name="ExitFromEcuadorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ExplorationExpenseAndOtherMember" name="ExplorationExpenseAndOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ExplorationExpenseSelkirk" name="ExplorationExpenseSelkirk" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDisclosureItemsAxis" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDisclosureItemsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDisclosureItemsDomain" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDisclosureItemsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FairValueInputsAdjustmentMember" name="FairValueInputsAdjustmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_FairValueLiabilitiesMeasuredOnRecurringBasisCommodityDerivativeFinancialInstrumentsLiabilities" name="FairValueLiabilitiesMeasuredOnRecurringBasisCommodityDerivativeFinancialInstrumentsLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="nbl_FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability" name="FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_FelicitaOffshoreEquatorialGuineaMember" name="FelicitaOffshoreEquatorialGuineaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FinancialAssetsAbstract" name="FinancialAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FinancialLiabilitiesAbstract" name="FinancialLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ForeignCountriesMember" name="ForeignCountriesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ForeignLossCarryforwardMember" name="ForeignLossCarryforwardMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ForeignTaxCreditMember" name="ForeignTaxCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_FpsoLeaseCommitmentsMember" name="FpsoLeaseCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_FundingOfJointVenturesFutureDrillingAndCompletionCosts" name="FundingOfJointVenturesFutureDrillingAndCompletionCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_ImpactofStatutoryRateIncreaseonDeferredTaxes" name="ImpactofStatutoryRateIncreaseonDeferredTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ImpairmentsAbstract" name="ImpairmentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_IncomeTaxBenefitRecognized" name="IncomeTaxBenefitRecognized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_IncomeTaxesAbstract" name="IncomeTaxesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_InstallmentPaymentAmountForJointVenturePartnership" name="InstallmentPaymentAmountForJointVenturePartnership" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_InstallmentPaymentsDueForConsolAcquisitionMember" name="InstallmentPaymentsDueForConsolAcquisitionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_InterestInDumbartonAndLochranzaFields" name="InterestInDumbartonAndLochranzaFields" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_Leviathan1DeepOffshoreIsraelMember" name="Leviathan1DeepOffshoreIsraelMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_Leviathan2AppraisalMember" name="Leviathan2AppraisalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_LeviathanMember" name="LeviathanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_MaribnoapinnaclesMember" name="MaribnoapinnaclesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_MaximumAmountToBePaidEachCalendarYearForFundingOfFutureDrillingAndCompletionCosts" name="MaximumAmountToBePaidEachCalendarYearForFundingOfFutureDrillingAndCompletionCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_MedicalandLifePlansMember" name="MedicalandLifePlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_NaturalGasCommodityContractMember" name="NaturalGasCommodityContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_NaturalGasPriceAgreedUponBenchmarkAverage" name="NaturalGasPriceAgreedUponBenchmarkAverage" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_NetBookValueMember" name="NetBookValueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_NetBookValueOfAssetsSold" name="NetBookValueOfAssetsSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="nbl_NetLiabilityPositionOfSettledInterestRateSwap" name="NetLiabilityPositionOfSettledInterestRateSwap" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_NonqualifiedStockOptionPlanForNonemployeeDirectors1988Member" name="NonqualifiedStockOptionPlanForNonemployeeDirectors1988Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_NorthSeaAssetsSoldMember" name="NorthSeaAssetsSoldMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OnshoreUSMember" name="OnshoreUSMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OperatingLeaseCommitmentsMember" name="OperatingLeaseCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OtherCurrentAssetsAbstract" name="OtherCurrentAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_OtherIncomeExpenseNet" name="OtherIncomeExpenseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OtherInvesteesMember" name="OtherInvesteesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OtherOnshoreUsMember" name="OtherOnshoreUsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OtherOperatingExpenseNetAbstract" name="OtherOperatingExpenseNetAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OtherProjectsMember" name="OtherProjectsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_OtherRevenuesAbstract" name="OtherRevenuesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_PayableWithImputedInterestDiscount" name="PayableWithImputedInterestDiscount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_PiceanceOnshoreUsMember" name="PiceanceOnshoreUsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ProductonExpenseAbstract" name="ProductonExpenseAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_PropertyPlantAndEquipmentOtherPropertyUsefulLife" name="PropertyPlantAndEquipmentOtherPropertyUsefulLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_RabbiTrustAssetsAbstract" name="RabbiTrustAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_RatioOfFundingOnShareOfFutureDrillingAndCompletionCosts" name="RatioOfFundingOnShareOfFutureDrillingAndCompletionCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_RetainedEarningsEquityMethodUndistributed" name="RetainedEarningsEquityMethodUndistributed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_RetirementandRestorationPlansMember" name="RetirementandRestorationPlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ScheduleOfActivityInSharesOfCommonAndTreasuryStockTableTextBlock" name="ScheduleOfActivityInSharesOfCommonAndTreasuryStockTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ScheduleOfDerivativeInstrumentsGainsLossesInStatementOfFinancialPerformanceTableTextBlock" name="ScheduleOfDerivativeInstrumentsGainsLossesInStatementOfFinancialPerformanceTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ScheduleOfDisposalGroupsGainOnDivestituresOnshoreUsTableTextBlock" name="ScheduleOfDisposalGroupsGainOnDivestituresOnshoreUsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ScheduleOfOtherOperationsInformationTableTextBlock" name="ScheduleOfOtherOperationsInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ScheduleofAssumptionsUsedinValuingMarketBasedAwardsGrantedTableTextBlock" name="ScheduleofAssumptionsUsedinValuingMarketBasedAwardsGrantedTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ScotiaFalklandIslandsMember" name="ScotiaFalklandIslandsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SecondVestingOptionMember" name="SecondVestingOptionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SeniorNotesDueApril12027Member" name="SeniorNotesDueApril12027Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SeniorNotesDueApril152014Member" name="SeniorNotesDueApril152014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SeniorNotesDueAugust12097Member" name="SeniorNotesDueAugust12097Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SeniorNotesDueDecember152021Member" name="SeniorNotesDueDecember152021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SeniorNotesDueMarch12019Member" name="SeniorNotesDueMarch12019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SeniorNotesDueMarch12041Member" name="SeniorNotesDueMarch12041Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SeniorNotesDueMarch12043Member" name="SeniorNotesDueMarch12043Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAverageStockPricePeriodUsed" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAverageStockPricePeriodUsed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMaximumTermToMaturity" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMaximumTermToMaturity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMinimumTermToMaturity" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMinimumTermToMaturity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberofSimulationsUsedToDetermineAssumptions" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberofSimulationsUsedToDetermineAssumptions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanMaximumNumberOfSharesAuthorized" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanMaximumNumberOfSharesAuthorized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanOptionsAuthorizedForGrantFirstYearOfServicePerDirector" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanOptionsAuthorizedForGrantFirstYearOfServicePerDirector" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsAuthorizedForAnnualAndDiscretionaryGrantsPerDirector" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsAuthorizedForAnnualAndDiscretionaryGrantsPerDirector" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsAuthorizedForAnnualGrantPerDirector" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsAuthorizedForAnnualGrantPerDirector" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsVestingRightsAfterYearThree" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsVestingRightsAfterYearThree" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsVestingRightsYearOne" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsVestingRightsYearOne" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsVestingRightsYearTwo" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanRestrictedStockAwardsVestingRightsYearTwo" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanStockOptionsAuthorizedForAnnualAndDiscretionaryGrantsPerDirector" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanStockOptionsAuthorizedForAnnualAndDiscretionaryGrantsPerDirector" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_ShareBasedCompensationArrangementByShareBasedPaymentPlanStockOptionsAuthorizedForAnnualGrantPerDirector" name="ShareBasedCompensationArrangementByShareBasedPaymentPlanStockOptionsAuthorizedForAnnualGrantPerDirector" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_ShareholderAmendmentMember" name="ShareholderAmendmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_SharesOfCommonStockHeldByRabbiTrust" name="SharesOfCommonStockHeldByRabbiTrust" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="nbl_SharesReceivedFromEmployeesInPaymentOfTaxOnVestedRestrictedStock" name="SharesReceivedFromEmployeesInPaymentOfTaxOnVestedRestrictedStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SouthRatonDeepwaterGulfOfMexicoMember" name="SouthRatonDeepwaterGulfOfMexicoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_StatutoryFederalCorporateTaxRateCurrentYear" name="StatutoryFederalCorporateTaxRateCurrentYear" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_StatutoryFederalCorporateTaxRateFutureYear" name="StatutoryFederalCorporateTaxRateFutureYear" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_StockOptionAndRestrictedStockPlan1992Member" name="StockOptionAndRestrictedStockPlan1992Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_StockPlanForNonemployeeDirectors2005Member" name="StockPlanForNonemployeeDirectors2005Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SubjecttoMarketConditionsMember" name="SubjecttoMarketConditionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SubjecttoTimeVestingMember" name="SubjecttoTimeVestingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SummaryOfSignificantAccountingPoliciesAbstract" name="SummaryOfSignificantAccountingPoliciesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SwapsDatedBrent2014Member" name="SwapsDatedBrent2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SwapsDatedBrent2015Member" name="SwapsDatedBrent2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SwapsNymexHh2014Member" name="SwapsNymexHh2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SwapsNymexHh2015Member" name="SwapsNymexHh2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SwapsNymexWti2014Member" name="SwapsNymexWti2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_SwapsNymexWti2015Member" name="SwapsNymexWti2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_Tanin1OffshoreIsraelMember" name="Tanin1OffshoreIsraelMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ThreeWayCollarNymexHh2014Member" name="ThreeWayCollarNymexHh2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ThreeWayCollarsDatedBrent2014Member" name="ThreeWayCollarsDatedBrent2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ThreeWayCollarsDatedBrent2015Member" name="ThreeWayCollarsDatedBrent2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ThreeWayCollarsNymexHh2015Member" name="ThreeWayCollarsNymexHh2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ThreeWayCollarsNymexWti2014Member" name="ThreeWayCollarsNymexWti2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_ThreeWayCollarsNymexWti2015Member" name="ThreeWayCollarsNymexWti2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_TotalOfMaturities" name="TotalOfMaturities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="nbl_TotalRabbiTrustPlanAssets" name="TotalRabbiTrustPlanAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_TransportationAgreementCommitmentsMember" name="TransportationAgreementCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_TreasuryStockPolicyTextBlock" name="TreasuryStockPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_TreasuryStockSharesRollForward" name="TreasuryStockSharesRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_UnrecognizedTaxBenefitsAbstract" name="UnrecognizedTaxBenefitsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_UsOnshoreAssetsSoldMember" name="UsOnshoreAssetsSoldMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nbl_ValuationAllowanceDeferredTaxAssetReversal" name="ValuationAllowanceDeferredTaxAssetReversal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="nbl_WeightedAverageExercisePriceOfAntidilutiveOptions" name="WeightedAverageExercisePriceOfAntidilutiveOptions" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nbl_YearsRemainingOpenToExaminationAbstract" name="YearsRemainingOpenToExaminationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_YolandaOffshoreEquatorialGuineaMember" name="YolandaOffshoreEquatorialGuineaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nbl_YoyoOffshoreCameronMember" name="YoyoOffshoreCameronMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
</XBRL>