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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 >  Endicott Unit, Eider Oil Pool
AOGCC Pool Statistics
Endicott Unit, Eider Oil Pool
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Operator: BP Exploration (Alaska) Inc.
Index Map
Discovery Well: BP Exploration (Alaska) Inc.
  Duck Island Unit MPU 2-56/EID
  Permit No. 198-024
  API No. 50-029-22863-00-00
  Section 36, T12N, R16E, UM

Depth: 17,988’ MD / 10,006' TVD

May 28, 1998

Status: Shut-in
Location: Central Arctic Slope Area Location Map Pool Location Map DNR Unit Map
References: List of Orders Summary - Annotated Reference List  
Summary:

The Eider oil pool was discovered in 1998 by the Duck Island Unit MPI 2-56/EID well. This pool is located 1-1/2 miles offshore in the westernmost portion of the Duck Island Unit, and it consists of oil below a gas cap within the Ivishak Formation. The pool delineated by two wells, DIU MPI 2-56A/EID and DIU MPI 2-30A, which have 5 additional sidetracks or plugbacks.

Two development wells are located within the pool, DIU MPI 2-56A/EID and DIU MPI 2-30A/EI-02. Initial production began from 2-56A/EID in June 1998, and averaged 1,850 bopd through December 1998. In January 1999, 2-30A/EI-02 was brought online. Production immediately jumped to 6,244 bopd in February 1999, but then declined rapidly to 1,189 bopd by September 1999, and the pool was shut in from October 1999 through May 2000. In June of 2000, 2-56A/EID was converted to a water injector, and production was restarted, relying on a single producer, 2-30A/EI-02. Production peaked in July 2001 at 2,254 bopd. In July 2004, 2-56A/EID was converted back a producer. Production declined to an average of about 100 BOPD for all of 2006. The pool was shut in during June 2007, produced again for 6 days during December 2009, and then shut in again.

Geology:

The Eider oil pool is situated in a fault-controlled anticline that is truncated by the Lower Cretaceous unconformity. The accumulation occupies about 300 acres. Within the pool, the Ivishak Formation consists of three regressive, stratigraphic units: the Lower Sand comprising upper shoreface or marine influenced fluvial and distributary sands, the Middle Shale comprises floodplain or bay fill, and Upper Sand that consisting of mostly fluvial sediments. The Lower Sand ranges from 80’ to 125’ thick, and averages 21% porosity and 30 md permeability. The Middle Shale is 75’ to 90’ thick and has average porosity and permeability values of 20% and 300 md. The Upper Sand ranges from 60’ to 125’ in thickness, has average porosity of 20% and average permeability of 300 md. Faulting and fracturing places these three stratigraphic units in pressure communication. API oil gravity ranges from 23.1 to 23.8 degrees.

 

  Strat Column Type Log
Production: Prod Chart  
  Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls)
Cumulative 2,753,888 0 26,520,097 5,517,441
2005 Total
31,644 0 1,159,781 1,115,404
2006 Total
35,188 0 2,002,677 1,176,208
2007 Total
82 0 34,606 23,301
2008 Total
0 0 0 0
2009 Total
2 0 0 0
2010 Total
2 0 0 0
2011 Total
0 0 0 0
2007 Rate (b/d)
0 0 95 64
2008 Rate (b/d)
0 0 0 0
2009 Rate (b/d)
0 0 0 0
2010 Rate (b/d)
0 0 0 0
2011 Rate (b/d) 0 0 0 0
2008 Change (%)
0 0 0 0
2009 Change (%)
0 0 0 0
2010 Change (%)
0 0 0 0
2011 Change (%)
0 0 0 0

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