ConocoPhillips, Anadarko appraise NPR-A discoveries

ConocoPhillips and Anadarko Petroleum Corp. have successfully appraised the 2001 Spark discovery in the National Petroleum Reserve-Alaska on Alaska's North Slope with appraisal wells Carbon No.1 and Spark No. 4.

Sept. 10, 2004

2 min read

By OGJ editors

HOUSTON, Sept.10 -- ConocoPhillips and Anadarko Petroleum Corp. have successfully appraised the 2001 Spark discovery in the National Petroleum Reserve-Alaska on Alaska's North Slope with appraisal wells Carbon No.1 and Spark No. 4.

Carbon No.1, about 5 miles northwest of the Spark No.1A discovery well, encountered an Upper Jurassic reservoir. Unstimulated, the well tested on flow at a maximum 24 MMcfd of natural gas and 1,250 b/d of 59° condensate at a flowing tubing pressure of 905 psi.

The Spark No. 4 well, drilled 3 miles northeast of Carbon No.1, was not tested. It penetrated a similar hydrocarbon-bearing reservoir interval.

The Spark accumulation is adjacent the 2001 Lookout discovery, which was successfully appraised in 2002. The Lookout No. 2 appraisal well tested at 4,000 b/d of 40° oil and 8 MMcfd of gas after fracture stimulation. The oil and gas also were produced from an Upper Jurassic reservoir interval. A flowing tubing pressure of 1,025 psi was recorded.

Technical and commercial evaluation of the Spark (CD-7) and Lookout (CD-6) discoveries is under way. Spark and Lookout are located 15 and 24 miles, respectively, southwest of Alpine oil field. ConocoPhillips is operator of Alpine and the discoveries and holds a 78% ownership, with Anadarko holding 22%.