The Ravva oil and gas field in the Krishna- Godavari Basin was developed in partnership with Cairn, ONGC, Videocon and Ravva Oil, under a production sharing contract (PSC) that runs until 2019.
Ravva pioneered many operational firsts in India, such as private helicopter licenses, an offshore loading point for crude sales, a helibase at S.Yanam, the US Dollar to Indian Rupee conversion of sales tax, and invoicing in dollars for a product produced in India.
As a first in India, Cairn conducted Time Lapse (4D) seismic technology using an OBC (Ocean Bottom Cable) seismic survey at Ravva. An infill drilling campaign planned using 4D seismic successfully arrested production decline and extended the life of the field by identifying areas of un-drained and by-passed oil.
Oil production went beyond 30,000 bopd in March 2015 after a gap of almost three and half years — a remarkable turnaround for a mature asset, driven by successful application of 4D seismic technology, better than expected results from infill drilling campaign and contribution from RE-6 exploration well.
The Ravva JV worked closely with the Government to secure various approvals and develop the block in a timely manner.
Our operations in Ravva have secured ISO 14001 Environment Management Certification and Occupational Health & Safety Management Systems Certification OHSAS 18001.
A 225-acre onshore processing facility at Surasaniyanam processes natural gas and crude oil from the Ravva field. Currently, eight unmanned offshore platforms are being operated.The Ravva onshore terminal operates to the international environmental standard - ISO 14001 - and has the capacity to handle 70,000 barrels of oil per day (bopd), 95 million standard cubic feet per day (mmscfd) of natural gas and 110,000 barrels per day of injection water. The terminal also has the capacity to store one million barrels of crude oil onshore.
In order to optimally harness the existing potential of the Ravva field, Cairn continues to evaluate and utilise numerous technology-driven approaches aimed at increasing the ultimate recovery of oil and gas from the block. Over the years, the block has produced more than 269 mmbbls of crude and over 337 billion cubic feet of gas.
The plant uptime of 99.7% demonstrates Cairn’s emphasis on operational efficiencies. The direct operating costs are one of the lowest among its peers. This is largely a result of Cairn’s focus on life-cycle planning, continuous monitoring, control of operational costs and innovative application of operating technologies.
Cairn also has a clear strategy in place aimed at expanding the potential of the field and enhancing the remaining value of the asset. The approach includes drilling a deep exploration prospect, evaluating deeper prospects, developing contingent resources, an infill drilling campaign and evaluating EOR techniques.
The map shows Cairn’s assets – one block in Rajasthan, two on the west coast and four on the east coast of India and one in South Africa.