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  <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>