Mumbai, Aug. 23: Reliance Industries and its partner BP Plc have made a second deep-water gas condensate discovery in the Cauvery basin, off the east coast.
The discovery in the Block CY-DWN-2001/2, which lies 62 km from the coast, is considered significant as the well has been flowing about 1 million metric standard cubic metres per day (mmscmd) of gas since August 17 when the discovery was made.
This is RIL’s second discovery in the block where it holds a 70 per cent interest. It had in 2007 made the Dhirubhai-35 (D-35) gas discovery, which the Directorate General of Hydrocarbons (DGH) had termed as unviable at the current gas price of $4.2 per million British thermal unit (mBtu).
“Well CYIII-D5-S1 was drilled in a water depth of 1,743 meters, to a total depth of 5,731 meters, with the primary objective of exploring Mesozoic-aged reservoirs.
“Preliminary evaluation of well data and fluid samples indicated presence of gas condensate in the reservoir interval with a gross column of 143 meters,” the two companies said in a statement. The discovery was named D-56.
Block CY-DWN-2001/2 is situated in the Cauvery basin, which is located on the eastern flank of India, in Tamil Nadu, along the Palk Strait and Coromandel coast.
According to the companies, the well flowed gas at the rate of 35.2 million standard cubic feet per day (1 mmscmd) with condensate at the rate of 413 barrels per day. BP holds a 30 per cent stake in the block.
RIL had drilled the first discovery well D-35 in July 2007 and a subsequent well to appraise the find in September 2009. Three other wells on the block were dry.
The block was won by RIL in the third round of New Exploration Licensing Policy (Nelp).
D-35 alone can produce 150 million standard cubic feet per day of gas (a little less than 5mmscmd) for 10 years from five development wells on the find. The first gas is envisaged in four years.