By OGJ editors
HOUSTON, June 7 -- Gujarat State Petroleum Corp. and GeoGlobal Resources Inc., Calgary, plan to appraise an Upper Cretaceous gas-condensate discovery on Block KG-OSN-2001/3 in shallow water of the Krishna-Godavari basin off Kakinada.
Operator GSPC tested 20 m of perforations at 3,801-30 m at the KG-17 well and measured three stabilized flow rates: 3.9 MMcfd and 650 b/d at 3,200 psi flowing wellhead pressure on a 16/64-in. choke; 4.3 MMcfd and 750 b/d at 2,600 psi on a 20/64-in. choke; and 4.8 MMcfd and 900 b/d at 1,900 psi on a 24/64-in. choke.
The discovery is believed to have opened a new exploration play on the block because the KG-8 well did not encounter this zone and because initial reservoir pressures and temperatures were measured at 8,450 psi and 325° F., respectively, at 3,550 m true vertical depth, GeoGlobal said.
"Preliminary investigation of the latest seismic and acoustic impedance data shows this trend may cover an area of approximately 60 to 90 sq km," the company said.
Tests continued. Afterward, GSPC will suspend the well for later reentry when it will set a whipstock and drill a 6-in. hole to 5,400 m measured depth. This is expected to allow the operator to test stimulation methods to increase the productivity of the third objective in KG-17 and enable tests of objectives 4 and 5.
The company's current geological model appears to correlate objective 5 in KG-17 with its second test in KG-8. GSPC plans to drill KG-15 directionally to an intended target of 5,300 m TVD, deviating 700 m southeast from the KG-8 well platform using the same jack up, spudding around the end of June.