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<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-11-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Changes_In_Management/2025-11-30/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/2025-11-30/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-2025-11-30.xsd"/><xbrli:context id="MainD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-06-26</xbrli:startDate><xbrli:endDate>2026-06-26</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-06-26</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110 </xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-06-26</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110 </xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-06-26</xbrli:startDate><xbrli:endDate>2026-06-26</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">CHENNPETRO</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">CHENNAI PETROLEUM CORPORATION LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">500110</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE178A01016</in-capmkt:ISIN><in-capmkt:WhetherDisclosureFiledForListedEntity contextRef="MainD">true</in-capmkt:WhetherDisclosureFiledForListedEntity><in-capmkt:RelationshipWithTheListedEntity contextRef="MainD">Listed Entity (self)</in-capmkt:RelationshipWithTheListedEntity><in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting contextRef="MainD">true</in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting><in-capmkt:DateOfBoardMeeting contextRef="MainD">2026-06-26</in-capmkt:DateOfBoardMeeting><in-capmkt:StartTimeOfBoardMeeting contextRef="MainD">10:00:00</in-capmkt:StartTimeOfBoardMeeting><in-capmkt:EndTimeOfBoardMeeting contextRef="MainD">11:40:00</in-capmkt:EndTimeOfBoardMeeting><in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported contextRef="MainI" unitRef="pure" decimals="0">1</in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported><in-capmkt:DateOfReport contextRef="MainI">2026-06-26</in-capmkt:DateOfReport><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement1">Appointment</in-capmkt:TypeOfChange><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement1">Key Managerial Personnel</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement1">Company Secretary and Compliance Officer</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement1">Mr.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement1">Lalit Kumar Mohanty</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement1">2026-07-01</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:TermOfAppointmentInMonths contextRef="D_ChangeInManagement1" unitRef="pure" decimals="INF">0</in-capmkt:TermOfAppointmentInMonths><in-capmkt:BriefProfile contextRef="D_ChangeInManagement1">Shri Lalit Kumar Mohanty is a Science graduate and a qualified Company Secretary from the Institute of Company Secretaries of India (Membership No.: F6655) and holds a Master’s degree in Law.
He has been serving as the Deputy Company Secretary of the Company since 2020 and brings with him over 25 years of rich and diverse experience in the areas of secretarial, legal, and taxation functions across various industries including telecom, refractories, steel, and oil sectors.
Prior to joining the Company, he held the position of Company Secretary at Neelachal Ispat Nigam Limited, a Central Public Sector Undertaking. During his professional career, he has also been associated with reputed organizations such as Tata Refractories Limited, RPG Group of Companies, and Ortel Communications Limited.</in-capmkt:BriefProfile></xbrli:xbrl>
