Department of Administration

Alaska Oil and Gas Conservation Commission

Alaska Department of Administration, Alaska Oil and Gas Conservation Commission
Administration >  AOGCC >  Statistical Reports >  Annual Pool Statistics - 2004 >  Kuparuk River Unit, Meltwater Oil Pool
AOGCC Pool Statistics
Kuparuk River Unit, Meltwater Oil Pool
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Operator: ConocoPhillips Alaska, Inc.

Discovery Well: ARCO Alaska Inc.
  Meltwater North No. 1
  Permit #200-012
  API No. 50-103-20326-00-00
  Sec. 20, T08N, R07E, UM

Depth: 6,122’ MD / 6,121' TVD

April 26, 2000
Status: Producing
Location: Central Arctic Slope Area Location Map PA Location Map DNR Unit Map
Orders: Complete List
Summary:
The Meltwater Oil Pool is located within and adjacent to the current boundaries of the Kuparuk River Unit (“KRU”). This is one of the satellite pools that have been discovered and developed utilizing the infrastructure built to develop the Kuparuk River Oil Pool within the KRU.  The pool occurs in the Bermuda Interval (“Bermuda”) of the late Cretaceous-aged (Cenomanian-Turonian) Seabee Formation. It was discovered in 2000 by the Meltwater North 1 exploratory well, and delineated by Meltwater 2 and 2A. This pool is defined as the accumulation of hydrocarbons common to, and correlating with, the interval between the 6,785 and 6,974 feet measured depth in the Meltwater North #2A well.  It lies between about 4,700’ and 5,500’ true vertical depth subsea.  Bermuda crude oil gravity is 37° API, and original oil in place (“OOIP”) within the pool is estimated to be 125 million stock tank barrels of oil (“MMSTB”).  No gas cap or water has been encountered within the pool.  Meltwater development has been from the KRU 2P-Pad, using wells spaced approximately 10 acres apart.  Regular production from the pool began in November 2001 and peaked in May 2002 at 10,863 barrels of oil per day (“BOPD”).  In December 2004, production averaged 7,888 barrels BOPD.  

Geology:
Meltwater is the stratigraphic equivalent to the Tarn oil pool to the north, and both share similar lithology.  The Bermuda consists of channel fill and lobate sandstones deposed in a turbidite fan system located on a slope-apron environment below an incised, Cenomanian-age shelf.   Reservoir sandstones at Meltwater are fine to very fine-grained, lithic-rich, have common mudstone laminations and interbeds, and average about 20% porosity and 12 millidarcies air permeability.  Clay content of the sandstone ranges from 15 to 25%, but the clay minerals occur dominantly as framework grains rather than as matrix.  The top of the Bermuda dips approximately 2 to 3 degrees to the east-southeast, and complex faulting occurs along the western (updip) margin of the pool.  Hydrocarbons are stratigraphically trapped, and their distribution is controlled by the distribution of sand.  Shale filled channel complexes and stratigraphic pinch-outs act as lateral boundaries.  Bermuda reservoirs are compartmentalized, primarily due to discontinuous sandstone distribution.

Strat Column
Orig. Oil in Place: 125  MMSTB (CO 456)
Production: Prod Chart Prod Report Prod Data

  Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls)
Cumulative 7,657,769
0 17,140,364 250,433
2001 Total 148,855 0 80,612 41,167
2002 Total 2,901,883 0 4,144,959 43,533
2003 Total 2,124,967 0 5,596,451 32,032
2004 Total 2,480,670 0 7,318,342 133,701
2003 Daily Rate 5,822 0 15,333 88
2004 Daily Rate 6,796 0 20,050 366
Change (%) 17% 0 31% 316%

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