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Alaska Oil and Gas Conservation Commission

Alaska Department of Administration, Alaska Oil and Gas Conservation Commission
Administration >  AOGCC >  Statistical Reports >  Annual Pool Statistics - 2004 >  Swanson River Field, Hemlock Oil Pool
AOGCC Pool Statistics
Swanson River Field, Hemlock Oil Pool
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Operator: Union Oil Company of California

Discovery Well: Richfield Oil Corporation 
  Swanson River Unit  No. 1
  Permit #100-145
  API No. 50-133-10136-00-00
  Sec. 10, T08N, R09W, SM

Depth: 12,384 MD / 12,384' TVD

July 19, 1957
Status: Producing
Location: Central Arctic Slope Area Location Map DNR Unit Map
Orders: Complete List
Summary:
Swanson River No. 1 was spudded on April 5, 1957, and on July 19, 1957 tested 900 barrels per day -- the first significant commercial oil find in the Cook Inlet Basin.   Continuous production from the Hemlock Formation began in October 1958 from the Swanson River Unit No. 34-10 well.  By June 1962, 50 wells had been drilled, and the field was producing more than 20,000 barrels of oil per day.  Production peaked in November 1967, averaging 38,323 barrels of oil per day, but by April 1970, it dropped below 35,000 barrels per day, and began declining.  Ten years later, in April 1980, average daily oil production was 10,640 barrels, and twenty years later, in April 1990, oil production averaged 5,200 barrels per day.  In April 2000, oil production from the Hemlock Oil Pool averaged 1,860 barrels per day, and during December 2004, it averaged 752 barrels per day.

Structure Map Strat Column
Production: Prod Chart Prod Report Prod Data

  Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls)
Cumulative 228,619,957
1,398,720 2,858,564,409 117,559,418
2001 Total 609,444 0 29,121,391 2,818,451
2002 Total 476,552 0 12,177,469 2,573,251
2003 Total 425,482 0 7,143,553 2,572,562
2004 Total 320,241 0 2,518,612 2,226,403
2003 Rate (b/d) 1,166 0 19,571 7,048
2004 Rate (b/d) 877 0 6,900 6,100
Change (%) -25% 0 -65% -13%

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