Department of Administration

Alaska Oil and Gas Conservation Commission

Alaska Department of Administration, Alaska Oil and Gas Conservation Commission
Administration >  AOGCC >  Statistical Reports >  Oil & Gas Pools - Statistics Pages >  Endicott Unit, Sag-Ivishak Undefined Oil Pool
AOGCC Pool Statistics
Endicott Field, Duck Island Unit, Sag-Ivishak Undefined Oil Pool
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Operator: BP Exploration (Alaska) Inc.
Index Map
Discovery Well: BP Exploration (Alaska) Inc.
  DIU MPI 2-30B/ME-01
  Permit No. 208-187
  API No. 50-029-22228-00-00
  Sec. 36, T12N, R16E, UM

Depth: 14,207 MD / 10,219' TVD

April 4, 2009
<<<<<<< .mine ======= >>>>>>> .r4906 <<<<<<< .mine
Status: Producing
Location: Central Arctic SlopeArea Location Map Unit Location Map DNR Unit Map
Status: Producing
Location: Central Arctic Slope Area Location Map Pool Location Map DNR Unit Map
References: List of Orders Summary - Annotated Reference List  
Orders: Complete List
Summary:

The Endicott Unit, Ivishak Oil Pool of the (“EIOP”) lies beneath the Beaufort Sea and within the Duck Island Unit, about 8 miles east of Prudhoe Bay Unit (“PBU“). The Sag Delta No. 9 exploratory discovered this pool in 1982 . This pool is the accumulation of hydrocarbons that is common to, and correlates with, Sag Delta No. 9 between the measured depths of 12,069’ and 12,314’. The EIOP has been developed from the Main Production artificial island that is located approximately 4 miles offshore in 2 to 14 feet of water. The pool has been producing continuously since July 1989. During the peak production years from November 1990 and November 1991, EIOP production ranged from 12,308 to 5,005 barrels of oil per day (“BOPD”), and averaged about 7,270 BOPD. Between December 1991 and June 1993, production dropped to an average of 2,650 BOPD. During 2009, the EIOP averaged 169 BOPD from one production well.

 

Geology:
The pool encompasses reservoirs assigned to the Triassic-aged Ivishak Formation, which is a member of the Sadlerochit Group. This formation was deposited in a marine shoreface environment. The pool is bounded to the south by a major fault and there appears to be numerous smaller faults within the accumulations. The pool encompasses an area of approximately 380 acres, and it appears to be separate from other, nearby accumulations based on pressure measurements and oil gravity. The base of the Ivishak oil column appears to be planar, and is underlain by a tar mat, which separates the oil from the underlying aquifer. No gas cap has been observed. Oil gravity averages 25° API within the pool. The temperature is 212°F at 10,000 feet true vertical depth.

Structure Map Strat Column Type Log
======= Summary:

The Sag-Ivishak Undefined Oil Pool lies beneath the Beaufort Sea in the Endicott Field within the Duck Island Unit (DIU), about 8 miles east of Prudhoe Bay Unit. It was discovered by the DIU MPI 2-30B/ME-01 well in 2009. This pool is the accumulation of hydrocarbons that lies between the measured depths of 13,779’ and 13,856’ in DIU MPI 2-30B/ME-01. This one-well oil pool is developed from the Main Production artificial island (MPI) that is located approximately 4 miles offshore in 2 to 14 feet of water.

The pool has been producing continuously from the Sag River Formation since April 2009. Production peaked at 1,315 barrels of oil per day (“BOPD”) in May 2009. For the first 10 months of 2011, the pool averaged about 675 BOPD with a 1% water cut.

Geology:

The Sag-Ivishak Undefined Oil Pool encompasses reservoirs assigned to the Triassic-aged Sag River, Shublik and Ivishak Formations, which are members of the Sadlerochit Group.

  Strat Column Type Log >>>>>>> .r4906 <<<<<<< .mine ======= >>>>>>> .r4906
Production: Prod Chart Production: Prod Chart    
  Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls)
Cumulative 583,967 0 758,964 16,692
2005 Total
0 0 0 0
2006 Total
0 0 0 0
2007 Total
0 0 0 0
2008 Total
0 0 0 0
2009 Total
142,562 0 107,810 6,255
2010 Total
229,853 0 541,799 4,708
2011 Total
211,552 0 109,355 5,729
2007 Rate (b/d)
0 0 0 0
2008 Rate (b/d)
0 0 0 0
2009 Rate (b/d)
391 0 295 17
2010 Rate (b/d)
630 1 1,484 13
2011 Rate (b/d) 580 0 300 16
2008 Change (%)
0 0 0 0
2009 Change (%)
100 0 100 100
2010 Change (%)
61 0 403 -25
2011 Change (%)
-8 0 -80 23
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