By OGJ editors
HOUSTON, Oct. 26 -- Kerr-McGee Oil & Gas Corp. reported another successful appraisal of a Campos basin oil discovery on Block BM-C-7 in 350 ft of water 75 km off Brazil.
The EnCana Corp. 3-ENC-4-RJS appraisal well extended Chinook field to the northeast by 1.5 miles. Kerr-McGee increased its estimate of the field's resource to 150-250 million bbl from 100-200 million bbl.
The appraisal well, drilled to 7,692 ft TD updip of the discovery well, encountered 80 ft of net pay in the Cretaceous Carapebus formation.
An earlier appraisal well, 3-ENC-3-RJS drilled 2.5 miles southwest of the discovery well, tested at rates of 1,400-1,800 b/d of 14º gravity oil (OGJ Online, Sept. 15, 2005).
Feasibility studies are under way to evaluate the commerciality and development options for Chinook field.
EnCana operates the 133,000-acre block with a 50% interest. Kerr-McGee holds the remaining 50%.
