The BP Exploration (Alaska)-operated Northstar field averaged 9,474 bpd in September, down 58 percent from an August average of 22,675 bpd, but returned to normal production levels in early October.

Planned turnaround work at Northstar — the last turnaround of the year on the North Slope — began in early September, BP Exploration (Alaska) spokesman Steve Rinehart told Petroleum News. The original work was completed as planned, he said, but during startup the need arose for some additional work; that work has been completed he said Oct. 5.

Production from the BP-operated Prudhoe Bay field averaged 344,805 bpd in September, up 52.6 percent from an August average of 225,949 bpd. The largest month-over-month change at Prudhoe was completion of planned summer maintenance turnarounds at the field.

The BP-operated Endicott field averaged 13,988 bpd in September, up 5.9 percent from an August average of 13,206 bpd.

Production from BP’s Milne Point field averaged 28,739 bpd in September, up 5.4 percent from an August average of 27,277 bpd.

The ConocoPhillips Alaska-operated Kuparuk River field averaged 150,446 bpd in September, up 0.7 percent from an August average of 149,353.

Two North Slope fields had drops in production from August to September, Alpine and Lisburne. The BP-operated Lisburne field averaged 29,084 bpd in September, down 4.3 percent from an August average of 30,394 bpd. The ConocoPhillips-operated Alpine field averaged 100,128 bpd in September, down 3.8 percent from an August average of 104,113 bpd.

In Cook Inlet, production averaged 3,323 bpd in September, up 9.3 percent from an August average of 3,041 bpd.

See story in Oct. 11 issue, available online at noon Alaska time, Friday Oct. 9, at www.PetroleumNews.com