Oil and Natural Gas Corporation Limited invites Global Expression of Interest (EOI No. ONGC/Gel Pigging/EOI/2026) from technically competent and experienced partners/vendors for the identification of service providers for Gel Pigging operations of offshore pipelines on a pilot basis in the Western Offshore sector. ONGC is seeking responses from qualified agencies having relevant expertise in providing Gel Pigging services for offshore pipeline operations. Detailed scope of work and requirements are available on the official portals: https://ongcindia.com https://tenders.ongc.co.in Last date for submission of EOI is 07 July 2026. Interested parties are required to submit their responses in electronic format (PDF/PPT) to the following email addresses: kumarl_sunil@ongc.co.in sanghi_sanjiv@ongc.co.in For any clarifications, contact: 011-2675 4156 011-2675 2035 All corrigenda, addenda, amendments, and extensions related to this EOI will be published only on the official ONGC website. No separate press notifications will be issued. Applicants are advised to regularly check the portal for updates.