A joint venture led by Oil and Natural Gas Corporation (ONGC), along with Hardy Exploration and Production and Invenire Petrodyne, has resumed oil production at the PY-3 Field in the offshore Cauvery Basin on the east coast of India. This marks the end of a 14-year production halt, with operations restarting on May 23, 2025.

Originally brought into production in 1997, the PY-3 Field was shut down in July 2011. Since then, the partners have undertaken a revised, multi-phase Field Development Plan (FDP) aimed at reviving the field.

Phase I of the FDP has now been successfully completed. This phase involved an integrity assessment and reactivation of the subsea well PD3SA, installation of new subsea infrastructure, and connection to the Floating Production, Storage, and Offloading (FPSO) vessel Svetah Venetia. The FPSO is currently processing and separating oil, gas, and water, with the oil stored onboard and transported to refineries by shuttle tankers.

Phase II of the FDP will focus on drilling additional wells and deploying enhanced oil recovery techniques to boost output. The PY-3 Field is known for producing light, sweet crude oil, which is highly valued in the market.

Hardy Exploration and Production, a part of Invenire Energy Group, operates the field and holds a 22.79 percent stake. ONGC owns a 50.63 percent stake, while Invenire Petrodyne holds the remaining 26.58 percent.

The PY-3 Field was first developed using floating production systems and subsea completions, setting a technological milestone in India. The restart of production after more than a decade reaffirms the field’s importance and the JV’s commitment to energy development in the region.

Invenire Petrodyne, formerly known as Tata Petrodyne, is the flagship entity of the Invenire Energy Group, which manages multiple upstream assets in India and Indonesia.