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RIL & BP make second gas discovery in Cauvery basin

Reliance Industries Ltd (RIL) and its partner BP plc on Friday announced a new gas condensate discovery off the east coast in the Cauvery basin.
The discovery, in the deepwater block CY-DWN-2001/2 (CYD5), is situated 62 kilometers from the coast in the Cauvery Basin and is the second gas discovery in the block, the companies said in a statement. RIL is the operator of the block with 70 per cent interest and BP has a 30 per cent share.

'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,' it said.

The well reached its total depth in early August and RIL has conducted drill stem test (DST) to evaluate the potential of the discovery.
'The well which had the initial reservoir pressure of 8,000 psi flowed gas at the rate of 35.2 million standard cubic feet per day with condensate,' the statement said.

The government and Directorate General of Hydrocarbons have been notified of the discovery, which has been named D-56.
RIL-BP said the preliminary evaluation of well data and fluid samples indicated the well intersected a gross hydrocarbon column of 143 meters in the reservoir interval. A drill stem test was carried out and the well flowed at a rate of 35.2 million cubic feet of gas per day and 413 barrels per day of condensate, on a 20.6 millimetre choke. In May, the companies had made a 'significant gas and condensate discovery' at their Krisha Godavari D6 deep-water block off the Andhra coast.

Spud in March, the KGD6-MJ1 probe was drilled in a water depths of 1024 metres to a total depth of 4509 metres.It aimed to explore the prospectivity of a Mesozoic Synrift Clastic reservoir lying more than 2000 metres below the already producing reservoirs in the D1-D3 gas fields. The well hit a gross gas and condensate column of about 155 metres in Mesezoic reservoirs.

Mike Daly, BP's vice president of exploration, commented: 'Following the discovery on block KG D6 announced in May, its another demonstration of the potential of the resource base that we anticipated when BP entered the original transaction with (Reliance) in 2011.'
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