Department of Administration

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 >  Milne Point Unit, Schrader Bluff Oil Pool
AOGCC Pool Statistics
Milne Point Unit, Schrader Bluff Oil Pool
Page:   1  >  2  >  3


Operator: BP Exploration (Alaska) Inc.
Index map for oil pool
Discovery Well: Standard Oil of California .
  Kavearak Pt No. 32-25
  Permit No. 169-051
  API No. 50-029-20028-00-00
  Sec. 25, T13N, R10E, UM

Depth: 9,799’ MD / 9,799' TVD

August 6, 1969

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

The Schrader Bluff Oil Pool at Milne Point was discovered in 1969 by the Socal Kavearak Pt. 32-25 well. The pool was initially delineated and then developed by Conoco, Inc. through drilling programs that began in 1989. Regular production began during March 1991, peaked at an average rate of 3,700 barrels of oil per day (bopd) in October 1991, and declined to an average of about 2,850 bopd (about 15% of MPU production) by mid-1993. In early 1994, BP became operator of the Milne Point Unit (MPU) and began an aggressive development program. By June 1996, development drilling at E-Pad and additional wells at H- and J-Pads caused production to increase steadily until it reached 12,000 bopd in April 2002. During September 2002, BPs extensive S-Pad development began production, and Schrader Bluff production immediately jumped to 20,000 bopd. Production from the pool peaked at 23,922 bopd in October 2003, and for the first six months of 2011, it averaged about 8,262 bopd, or about 35% of current MPU production. At present, more than 300 wells and well bores have been drilled to or through the pool, and 99 have produced from it. The Schrader Bluff Oil Pool is developed on 10-acre spacing.

 

Geology:

The Schrader Bluff Oil Pool (“SBOP”) was originally defined in the Milne Point Unit (“MPU”) A-1 well. However, a more typical and representative section for the pool lies between 4,100 and 4,726 feet measured depth in MPU G-1. The pool occurs within the Schrader Bluff Formation, which was deposited in the Late Cretaceous (Maastrichitian). At Milne Point, the Schrader Bluff is divided into two stratigraphic intervals designated, from oldest to youngest, the "O-sands" and the "N-sands.” The O-sands consist of very fine to fine-grained sandstone interbedded with siltstone and mudstone that were deposited under shallow marine conditions in the distal portion of a delta. The overlying N-Sands were deposited within a muddy marine shelf system. Mudstone and siltstone dominate the lower portion of this interval, but the sediments coarsen upward, becoming fine to medium grained sandstone that dominates the upper part of the N-Sand interval. The SBOP occurs within a homocline that dips 1 to 2 degrees to the east-northeast, and lies between 3,400 and 5,200 feet true vertical feet below sea level. NW and NE-trending faults compartmentalize the pool. Reservoir intervals average 28% in porosity and 171 md in permeability. The temperature of the reservoir is about 80 degrees F.

 

  Strat Column Type Log
Production: Prod Chart    
  Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls)
Cumulative 66,818,343 0 40,315,355 53,536,313
2005 Total
6,408,201
0 5,285,406 4,715,268
2006 Total
4,685,289 0 2,941,879 4,233,833
2007 Total
4,084,211 0 1,951,283 5,697,266
2008 Total
4,377,404 0 2,442,723 6,370,589
2009 Total
3,319,084 0 1,584,776 6,208,662
2010 Total
3,214,943 0 1,054,154 5,566,139
2011 Total
2,602,954 0 1,140,839 5,847,009
2007 Rate (b/d)
11,190 0 5,346 15,609
2008 Rate (b/d)
11,993 0 6,692 17,454
2009 Rate (b/d)
9,093 0 4,342 17,010
2010 Rate (b/d)
8,808 0 2,888 15,250
2011 Rate (b/d) 7,131 0 3,126 16,019
2008 Change (%)
7 0 25 12
2009 Change (%)
-24 0 -35 -3
2010 Change (%)
-3 0 -33 -10
2011 Change (%)
-19 0 8 5

Continued:   1  >  2  >  3