By OGJ editors
HOUSTON, Mar. 14 -- Preliminary results from wireline pressure testing and sampling in the Waraga-1 exploration well on Block 2 in Uganda suggest "a minimum 45 m oil column" of about 40° gravity oil, reported Tullow Oil PLC, London. Tullow is a 50-50 partner with operator Hardman Resources Ltd., Perth.
Waraga-1 is testing a structural prospect analogous to the partners' recently drilled Mputa-1 oil discovery well 19 km to the southwest (OGJ Online, Dec. 30, 2005).
Waraga-1 was drilled into basement to 2,010 m TD. Oil samples were recovered from a 32 m gross interval at about 1,700 m. "While no oil-water contact was observed, pressure data from the oil interval and deeper water-bearing sands" suggest the oil column for this reservoir interval, Tullow said.
Wireline logs and shows while drilling also indicated a zone of interest from 1,780 m to 1,930 m that contains a number of thinner sands, and oil samples were recovered from a sand at 1,893 m, Tullow said.
Hardman is studying data to determine the extent of the deeper oil-bearing interval and whether it represents one or a number of oil columns.
The well will be cased and suspended for future testing.
