Source: Reliance Industries
Reliance Industries Limited (RIL) announced its sixth oil discovery, Dhirubhai-49, in exploratory block CB-ONN-2003/1 (CB 10 A&B.
The well CB10A-T1 was drilled to a total depth of 1,500 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 1390-1402.5 meters in the Miocene Basal Sand (MBS) of Babaguru formation. Conventional production testing was carried out in the interval 1390-1395 meters. The well flowed at a rate of 415 barrels of oil per day (bopd), through a 6-mm bean with a flowing tubing head pressure of 290 psi.
The discovery is significant as this play fairway 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 kilometers from Ahmedabad in Gujarat, in the Cambay Basin. The block covers an area of 635 square kilometers in two parts, Part A & Part B. RIL, as Operator, holds 100% Participating Interest in the block.
While the entire block was covered with 2D seismic, about 80% 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 discovery, named ‘Dhirubhai–49’, the sixth oil discovery in the block so far, has been notified to the Government of India, and to the Directorate General of Hydrocarbons. The potential commercial interest of the discovery is being ascertained through additional data gathering and analysis.
The discovery supplements the understanding of the petroleum system in the Cambay basin in general, and the block in particular. Based on the interpretation of the acquired 3D seismic campaign in the contract area, several more prospects with upside potential have been identified at different stratigraphic levels.