By OGJ editors
HOUSTON, Nov. 22 -- Vintage Petroleum Inc. has tested 43° gravity oil from the subsalt Jurassic Upper Lam B formation in An Nagyah oil field in Yemen.
An Nagyah-18, drilled to 6,628 ft TD, was completed in 2,559 ft of gross oil-bearing Lam B section (OGJ, Oct. 17. 2005, Newsletter). The interval tested at a stabilized rate of 1,300 b/d of oil with less than 1% water cut and 838 Mcfd of natural gas at 220 psi tubing pressure through a 48/64 in. choke.
The Lam B reservoir is 140 ft below the currently producing Lam A formation. The An Nagyah-18 is the first commercial well in Lam B. Drilling of additional Lam B wells may be necessary to further develop the reservoir.
With testing completed at An Nagyah-18, the sixth horizontal well in the field, the drilling rig will move 14 miles northwest to drill the 6,560 ft Hatat-1 exploration well to test a potentially fractured, granitic basement play.
Block S-1 currently produces 11,300 gross b/d of oil and should exceed 12,000 gross b/d by yearend.