Indago Petroleum has successful well tests off Oman

Nov. 9, 2006
Indago Petroleum Ltd. subsidiary Indago Oman Ltd. has begun testing the West Bukha-2A (WB2A) well on Block 8 off Oman, as it pursues a production target of first-quarter 2008.

By OGJ editors
HOUSTON, Nov. 9 -- Indago Petroleum Ltd. subsidiary Indago Oman Ltd. has begun testing the West Bukha-2A (WB2A) well on Block 8 off Oman, as it pursues a production target of first-quarter 2008.

WB2A, a sidetrack of the original West Bukha-2 wellbore, penetrated the Shuaiba and Kharaib reservoirs of the Lower Cretaceous Thamama formation.

The WB2A sidetrack, a result of the drill string parting while drilling, reached a depth of 4,529 m and was plugged back to 4,383 m after electric wireline logs were obtained.

On the first of two 4-hr flow tests of the uppermost Shuaiba section of the Thamama, over an open-hole interval from 4,363 m to 4,383 m, the well achieved an average stable flow rate of 3,524 b/d of 42° gravity oil and 1 MMscfd of gas on a 36/64-in. choke at 2,512 psi. This success followed acidization and an initial clean-up period.

On the second test, the well's flow rate increased to an average 4,392 b/d of oil and 1.4 MMscfd of gas through a 50/64-in. choke at 1,711 psi.

After completing flow testing, Indago, the block operator, will shut-in the well to conduct a pressure build-up survey.

Both the primary reservoir (Mishrif-Mauddud) and secondary target (Thamama) were encountered high to prognosis, resulting in a longer hydrocarbon-bearing interval in the Thamama than expected. However, the Shuaiba section of the Thamama has not previously formed part of Indago's audited 2P reserve estimates. Plus, the reservoir has yet to be assigned commercial reserves, Indago said.

It plans to conduct a second flow test in the Mishrif-Mauddud following the Thamama testing period. Previously, flow rates of as much as 13.6 MMscfd and 2,910 b/d of condensate have been obtained in the Mishrif formation, which lies above the Thamama, in the 1976 discovery well.

Indago's partners in the project are LG International 50%, and Heritage Oil Corp. subsidiary Eagle Energy (Oman) Ltd. 10%.