August 05, 2009 --- Vol. 15, No. 57August 2009

Maintenance impact continues on North Slope production

Summer maintenance work on the North Slope continued to impact production rates in July, with production averaging 568,788 barrels per day, down 3.87 percent from a June average production level of 591,666 bpd.

Trans-Alaska oil pipeline operator Alyeska Pipeline Service Co. had a planned maintenance shutdown July 18-19. June production was impacted by the first Alyeska summer maintenance shutdown, June 20-21.

ANS production averaged more than 700,000 bpd most months from last September through May, dropping below that level only in April due to a weather-related reduction in tanker traffic out of the Valdez Marine Terminal which resulted in a requirement for reduced production.

The BP Exploration (Alaska)-operated Endicott field where the main work this summer is replacement of the production control system on the main production island had no production from July 9 through July 30. Production averaged 3,055 bpd in July, down 78.4 percent from a June average of 14,141 bpd.

The ConocoPhillips Alaska-operated Alpine field had two days of zero production, July 19 and 20, overlapping the June scheduled shutdown of the trans-Alaska oil pipeline. Alpine production averaged 93,666 bpd in July, down 9.73 percent from a June average of 103,760 bpd.

The ConocoPhillips-operated Kuparuk River field had a small month-over-month decline, averaging 143,608 bpd in July, down 0.74 percent from a June average of 144,674 bpd.

Other July-over-June production declines occurred at BPs Milne Point field, which averaged 24,246 bpd in July, down 17.96 percent from a June average of 29,555 bpd, and at the BP-operated Northstar field, which averaged 21,757 bpd in July, down 7.34 percent from a June average of 23,481 bpd.

The BP-operated Prudhoe Bay field averaged 255,060 bpd in July, up 2.54 percent from a June average of 248,747 bpd, while production at Lisburne, also operated by BP, averaged 27,396 bpd in July, up 0.32 percent from a June average of 27,308 bpd.

Cook Inlet production averaged 3,212 bpd in July, up 6.96 percent from a June average of 3,003 bpd.

See story in Aug. 9 issue, available online at noon, Friday, Aug. 7 at

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