By the OGJ Online Staff
HOUSTON, Aug. 13 -- Conoco and its partners in Block 15-1 off Viet Nam have declared that Sutu Den discovery is commercial. First production is expected in less than 3 years.
Conoco said the decision was based on three wells on the Sutu Den (Black Lion) prospect. The discovery well, 15-1-SD-1X, flowed 12,600 b/d of oil from three zones; appraisal well 15-1-SD-2X flowed 11,032 b/d, based on combined well tests from two major pay zones in the fractured Basement and Miocene reservoirs; and 15-1-SD-2X sidetrack well flowed 13,223 b/d of 36°-gravity oil from the fractured basement.
In May, Conoco and its partners said 2X appraisal well supported the viability of the prospect (OGJ Online, May 23, 2001).
Sutu Den is a large, faulted structure in the eastern part of the block in 154 ft of water.
Conoco predicts Sutu Den will produce at least 200 million bbl of oil, possibly more than 400 million.
The 1.15 million acre Block 15-1 is in the Cuu Long basin, 120 miles southeast of Ho Chi Minh City.
The block is operated by the Cuu Long Joint Operating Co. Conoco owns 23.25%, Petrovietnam 50%, Korean National Oil Corp. 14.25%, SK Corp. 9%, and Geopetrol 3.5%.
The partners plan to drill the Sutu Vang prospect on the same block by yearend.
