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Alaska Oil and Gas Conservation Commission

Alaska Department of Administration, Alaska Oil and Gas Conservation Commission
Administration >  AOGCC >  Statistical Reports >  Current Oil & Gas Pools Statistics >  Prudhoe Bay Unit, Lisburne Oil Pool
AOGCC Pool Statistics
Prudhoe Bay Unit, Lisburne Oil Pool
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Operator: BP Exploration (Alaska) Inc.
Index Map
Discovery Well: Arco Alaska Inc.
  Prudhoe Bay State No. 1
  Permit No. 167-011
  API No. 50-029-20001-00-00
  Sec.10, T11N, R14E, UM

Depth: 12,005’ MD / 12,005' TVD

December 16, 1967

Status: Producing
Location: Central Arctic Slope Area Location Map Unit Location Map DNR Unit Map
Orders: List of Orders Summary - Annotated References  
Summary:

The Lisburne Oil Pool was discovered in 1969 by the ARCO Prudhoe Bay State No. 1 exploratory well between the measured depths of 8,790 feet and 10,440 feet. Regular production began in March 1982, regular gas injection began in January 1987, and by injection of water began in May 1987. Regular water injection continued until December 1989, then halted. Regular injection of water resumed again in September 2008 and continued until August 2010. During 2011, water injection occurred only in the months of May and June. Oil production peaked consistently at about 47,600 barrels of oil per day (BOPD) from mid- to late-1987 and then began to decline. For the first four months of 2011, production from the Lisburne Oil Pool averaged about 7,070 BOPD.


Geology:

The Lisburne Group consists primarily of shallow marine limestone and dolomite with lesser amounts of shale, silt, sand, and chert. Shaly and silty beds are continuous over broad areas and are useful for correlation. The Lisburne Group is characterized by abundant natural and predominately vertical fractures which allows for fluid movement through the carbonates as well as the thin silty and shaly beds.

 

This oil pool has an associated gas cap, with a gas-oil contact at 8,600 feet subsea. Initial drilling data were anomalous and insufficient to definitively establish an area-wide planar oil-water contact for the Lisburne Oil Pool. The pool also contains significant amounts of naturally occurring hydrogen sulfide gas. The average initial reservoir pressure for the Lisburne Oil Pool is 4,490 pounds per square inch at an 8,900 foot subsea datum. Reservoir temperature is about 183 degrees Fahrenheit at the datum. Primary depletion is projected to recover no more than about 7 percent of the original oil in place. Produced gas is injected into the gas cap to retard the rate of reservoir pressure decline.

 

  Strat Column Type Log
Production: Prod Chart NGL Chart        
  Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls)
Cumulative 159,567,1797 16,260,883 1,819,003,837 51,877,717
2005 Total
3,049,864 320,020 57,694,765 1,404,920
2006 Total
3,223,924 469,406 65,651,926 1,579,485
2007 Total
3,731,144 531,975 78,083,824 2,451,433
2008 Total
2,746,890 313,068 52,092,631 2,290,940
2009 Total
2,665,388 212,490 41,170,972 2,731,431
2010 Total
2,117,084 246,821 38,947,882 2,195,876
2011 Total
2,321,787 257,040 40,177,339 2,309,572
2007 Rate (b/d)
10,222 1,457 213,928 6,716
2008 Rate (b/d)
7,526 858 142,720 6,277
2009 Rate (b/d)
7,302 582 112,797 7,483
2010 Rate (b/d)
5,800 676 106,707 6,016
2011 Rate (b/d) 6,361 704 110,075 6,328
2008 Change (%)
-26 -41 -33 -7
2009 Change (%)
-3 -32 -21 19
2010 Change (%)
-21 16 -5 -20
2011 Change (%)
10 4 3 5

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