The Deepwater Frontier drilling rig has moved to drill development wells for the Dhirubhai gas development project. An addendum to the Field development plan for the Dhirubhai 1 and 3 gas fields has been approved and provides for the gas production rate to be increased to 2.8 BCF per day with a corresponding phase-1 field development costs of US$5.2 billion. Commencement of production is scheduled for mid 2008. The approved field development plan of Dhirubhai 1 & 3 provides flexibility in the critical portions of the facilities to facilitate gas production to 4.2 BCF per day in future as and when additional OGIP & reserves are added.
Since the approval of the initial development plan of Dhirubhai # 1 & 3 in November 2004, substantial additional work has been done to assess the overall hydrocarbon potential of the D6 block in general, and in the development area for Dhirubhai 1 and 3 discoveries in particular. This work included the acquisition of an additional 7600 sq km of 3-D seismic, drilling and testing of additional exploratory wells, drilling and extensive coring of two development wells in the development area, along with various detailed technical studies by international consultants. As a result, the hydrocarbon potential has increased significantly.
Drilling of the Bangora-4 well commenced in early October 2006 and reached total depth of 4380m (3200m TVDss). The well is 7 km (4.35 mi) south of Bangora-3 and encountered 36 m of reservoir quality sand in the Upper-D interval and confirmed a gas-water contact (GWC) at 3058 m TVDss.
The Company's working interest Proved reserves at Bangora as at 31 March 2006 were 30.2 Bscf and current internal estimates including the drilling successes of Bangora-2, -3 and -4 boost the Company's working interest estimated proved recoverable gas volumes to 118 Bscf, an increase in proved reserves of 291%. The Company's working interest Proved plus Probable reserves at Bangora as at 31 March 2006 were 69.5 Bscf and current internal estimates including the drilling successes of Bangora-2, -3 and -4 boost the Company's working interest estimated proved plus probable recoverable gas volumes to 225.4 Bscf, an increase of 224 %. Commerciality was declared on December 3, 2006 and the Company is entitled to collect the receivable owed for natural gas delivered to date. Current production from Bangora is 60 MMSCFD (40 MMSCFD net to the Company).
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