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<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2026-03-31/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Action_Initiation_Or_Action_Taken_Or_Order_Passed/2026-03-31/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2026-03-31/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2026-03-31.xsd"/><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">500312</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-27</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_ActionsTaken1"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">500312</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-27</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ActionsTakenOrOrdersPassedAxis"><in-capmkt:ActionsTakenOrOrdersPassedDomain>ActionsTakenOrOrdersPassedDomain1</in-capmkt:ActionsTakenOrOrdersPassedDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="I_ActionsTaken1_PersonsAgainstWhomActionsTaken1"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">500312</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-27</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ActionsTakenOrOrdersPassedAxis"><in-capmkt:ActionsTakenOrOrdersPassedDomain>ActionsTakenOrOrdersPassedDomain1</in-capmkt:ActionsTakenOrOrdersPassedDomain></xbrldi:typedMember><xbrldi:typedMember dimension="in-capmkt:PersonsAgainstWhomActionsTakenOrOrdersPassedAxis"><in-capmkt:PersonsAgainstWhomActionsTakenOrOrdersPassedDomain>PersonsAgainstWhomActionsTakenOrOrdersPassedDomain1</in-capmkt:PersonsAgainstWhomActionsTakenOrOrdersPassedDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="I_Signatories1"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">500312</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-27</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:SignatoriesAxis"><in-capmkt:SignatoriesDomain>SignatoriesDomain1</in-capmkt:SignatoriesDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">ONGC</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">Oil &amp; Natural Gas Corporation Limited</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">500312</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE213A01029</in-capmkt:ISIN><in-capmkt:TypeOfAnnouncement contextRef="MainI">New</in-capmkt:TypeOfAnnouncement><in-capmkt:TypeOfEvent contextRef="MainI">Action(s) taken or orders passed (sub-para 20)</in-capmkt:TypeOfEvent><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting contextRef="MainI">false</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting><in-capmkt:DateOfOccurrenceOfEventOrInformation contextRef="MainI">2026-08-25</in-capmkt:DateOfOccurrenceOfEventOrInformation><in-capmkt:TimeOfOccurrenceOfEventOrInformation contextRef="MainI">22:00:00</in-capmkt:TimeOfOccurrenceOfEventOrInformation><in-capmkt:DateOfReport contextRef="MainI">2026-08-27</in-capmkt:DateOfReport><in-capmkt:TypeOfActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">Imposition of fine or penalty</in-capmkt:TypeOfActionsTakenOrOrdersPassed><in-capmkt:ActionsTakenOrOrdersPassedBy contextRef="I_ActionsTaken1">Regulatory Authority</in-capmkt:ActionsTakenOrOrdersPassedBy><in-capmkt:NameOfAuthorityFromWhomActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">BSE Limited and National Stock Exchange of India Limited</in-capmkt:NameOfAuthorityFromWhomActionsTakenOrOrdersPassed><in-capmkt:NumberOfPersonsAgainstWhomActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1" unitRef="pure" decimals="0">1</in-capmkt:NumberOfPersonsAgainstWhomActionsTakenOrOrdersPassed><in-capmkt:ActionsTakenOrOrdersPassedAgainst contextRef="I_ActionsTaken1_PersonsAgainstWhomActionsTaken1">Listed Entity (Self)</in-capmkt:ActionsTakenOrOrdersPassedAgainst><in-capmkt:NameOfPersonAgainstWhomActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1_PersonsAgainstWhomActionsTaken1">Oil &amp; Natural Gas Corporation Limited</in-capmkt:NameOfPersonAgainstWhomActionsTakenOrOrdersPassed><in-capmkt:TypeOfCommunicationReceivedForActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">Notice</in-capmkt:TypeOfCommunicationReceivedForActionsTakenOrOrdersPassed><in-capmkt:NatureAndDetailsOfTheActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">Notices dated 25.08.2026 received from both the Stock Exchanges levying fine of ₹14,31,340/- (including GST) each for non-compliance under Regulation 17(1), 17(2A), 18(1), 19(1)/19(2), 20(2)/(2A) and 21(2) of SEBI (LODR) Regulations, 2015 for Quarter ended 30.06.2026.</in-capmkt:NatureAndDetailsOfTheActionsTakenOrOrdersPassed><in-capmkt:DateOfReceiptOfCommunicationReceivedForActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">2026-08-25</in-capmkt:DateOfReceiptOfCommunicationReceivedForActionsTakenOrOrdersPassed><in-capmkt:BriefDetailsOfTheMaterialContentsOfTheCommunicationReceivedForActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">Notices dated 25.08.2026 received from both the Stock Exchanges levying fine of ₹14,31,340/- (including GST) each for non-compliance under Regulation 17(1), 17(2A), 18(1), 19(1)/19(2), 20(2)/(2A) and 21(2) of SEBI (LODR) Regulations, 2015 for Quarter ended 30.06.2026.</in-capmkt:BriefDetailsOfTheMaterialContentsOfTheCommunicationReceivedForActionsTakenOrOrdersPassed><in-capmkt:PeriodForWhichCommunicationWouldBeApplicableForActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">Quarter ended 30.06.2026</in-capmkt:PeriodForWhichCommunicationWouldBeApplicableForActionsTakenOrOrdersPassed><in-capmkt:ExpectedImpactOfActionsTakenOnFinancialAndOperationalOrOtherActivitiesOfTheListedEntity contextRef="I_ActionsTaken1">Not significant</in-capmkt:ExpectedImpactOfActionsTakenOnFinancialAndOperationalOrOtherActivitiesOfTheListedEntity><in-capmkt:DetailsOfAnyAberrationsOrNonCompliancesOrViolationsOrContraventionsIdentifiedByTheAuthorityInTheCommunicationForActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">Non-compliance under Regulation 17(1), 17(2A), 18(1), 19(1)/19(2), 20(2)/(2A) and 21(2) of SEBI (LODR) Regulations, 2015, with respect to Composition of Board, Quorum of Board Meeting and Composition of Committees.</in-capmkt:DetailsOfAnyAberrationsOrNonCompliancesOrViolationsOrContraventionsIdentifiedByTheAuthorityInTheCommunicationForActionsTakenOrOrdersPassed><in-capmkt:AmountOfFineOrPenalty contextRef="I_ActionsTaken1" unitRef="INR" decimals="0">2862680</in-capmkt:AmountOfFineOrPenalty><in-capmkt:DetailsOfAnyPenaltyOrRestrictionOrSanctionImposedPursuantToTheCommunicationForActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">Notices dated 25.08.2026 received from both the Stock Exchanges levying fine of ₹14,31,340/- (including GST) each for non-compliance under Regulation 17(1), 17(2A), 18(1), 19(1)/19(2), 20(2)/(2A) and 21(2) of SEBI (LODR) Regulations, 2015 for Quarter ended 30.06.2026.</in-capmkt:DetailsOfAnyPenaltyOrRestrictionOrSanctionImposedPursuantToTheCommunicationForActionsTakenOrOrdersPassed><in-capmkt:DetailsOfRegulatoryActionsOrSanctions contextRef="I_ActionsTaken1">Not Applicable</in-capmkt:DetailsOfRegulatoryActionsOrSanctions><in-capmkt:ActionsTakenByListedCompanyWithRespectToTheCommunicationForActionsTakenOrOrdersPassed contextRef="I_ActionsTaken1">It is informed that being a Government Company, power of appointment of Directors (including Independent Directors) is vested with the Govt. of India (Gol) in terms of provisions of Articles of Association (AoA) of the Company. The requirement for appointment of requisite numbers of Independent Directors was submitted to the Government of India (GoI) from time to time. Copies of said letters were also submitted to Stock Exchanges.
Considering the above position, both the exchanges have been requested to waive-off the above mentioned fine levied on the Company.</in-capmkt:ActionsTakenByListedCompanyWithRespectToTheCommunicationForActionsTakenOrOrdersPassed><in-capmkt:NameOfTheSignatory contextRef="I_Signatories1">Shashi Bhushan Singh</in-capmkt:NameOfTheSignatory><in-capmkt:DesignationOfTheSignatory contextRef="I_Signatories1">Company Secretary and Compliance Officer</in-capmkt:DesignationOfTheSignatory><in-capmkt:DateOfOfTheSignatory contextRef="I_Signatories1">2026-08-27</in-capmkt:DateOfOfTheSignatory><in-capmkt:PlaceOfOfTheSignatory contextRef="I_Signatories1">Delhi</in-capmkt:PlaceOfOfTheSignatory></xbrli:xbrl>
