Reliance Industries Limited (RIL) in its release today announced the sixth oil discovery in exploratory block CB-ONN-2003/1 (CB 10 A&B), awarded under the NELP V bidding. The well CB10A-T1 was drilled to a total depth of 1500 meters in Part A of the block, with the objectives of exploring the play fairway in the Miocene Basal Sand (MBS) of Babaguru formation as well as the Oligocene play of Tarapur formation. The hydrocarbon bearing zone was identified from 1390-1402.5m in the Miocene Basal Sand (MBS) of Babaguru formation. Conventional production testing was carried out in the interval 1390-1395m. The well flowed at a rate of 415 barrels of oil per day (bopd), through a 6mm bean with a flowing tubing head pressure of 290 psi.

The discovery is significant as this is expected to open more oil pool areas, leading to better hydrocarbon potential within the block. The block CB-ONN-2003/1 is located at a distance of about 130 kms from Ahmedabad in Gujarat, in the Cambay basin. The block covers an area of 635-sq km in two parts, viz part A and part B. RIL holds 100 per cent PI in the block while the entire block was covered with 2D seismic, about 80 per cent of the block area has 3D seismic coverage. Of the 16 exploratory wells drilled in the block by RIL so far, 12 are located in part-A and the remaining 4 in the part B of the block. RIL is continuing further exploratory drilling efforts in the block. The company announced its fifth discovery in the same basin a couple of weeks back.

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