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AOGCC Pool Statistics Milne Point Unit, Sag River Oil Pool
Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 21 July 2005 Page: 1 > 2 > 3
Operator: BP Exploration (Alaska) Inc.
Discovery Well: Standard Oil of California
Kavearak Pt #32-25
Permit #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 DNR Unit Map
Orders: Complete List
Summary: The Sag River Oil Pool lies within the Milne Point Unit ("MPU"), and it is defined as the accumulation of
hydrocarbons common to and correlating with the interval between the measured depths of 8,810' and
8,884' in the MPU A-01 well. Regular production from the pool began in 1995. Three wells and 3
sidetracked wellbores were drilled to develop the pool: 1 producer from MPU C-Pad, 1 sidetracked
producer from MPU E-Pad, 3 wellbores from MPU F-Pad (1 producer, 1 sidetracked producer, and 1
sidetracked injector), and 1 producer from MPU K-Pad. Well spacing is approximately 40 acres. Since
2002, only 1 wellbore within the pool has been on production (MPU F-33A). Water-alternating-gas
injection began in MPU F-73A during July 2002 in support of MPU F-33A, but was halted in May 2004.
During 2004, monthly production from the pool averaged 173 barrels of oil per day, 109 thousand cubic
feet of gas per day and 186 barrels of water per day.
Geology: Within the pool, the Sag River consists of late Triassic to early Jurassic-aged, thin marine shelf
sediments. At Milne Point, the Sag River is divided into four laterally extensive sub-zones that are
named, from deepest to shallowest, A through D. The zones are fairly uniform in thickness and have
similar reservoir properties. Zone D is non-reservoir siltstone and shale at the top of the Sag River; its
average gross thickness is about 21 feet. Zone C is the uppermost sandstone interval. It is generally
non-reservoir with porosity to 17%, permeability to 2.9 millidarcies, and an average gross thickness of
10 feet. Zone B is the primary reservoir interval, with porosity to 21%, permeability to 23 millidarcies,
and an average gross thickness of 30 feet. Zone A is the basal sandstone unit, which uncomformably
overlies the Shublik Formation. At Milne Point, it is composed almost entirely of non-reservoir
sandstone, with porosity to 18%, permeability to 1.2 millidarcies, and an average gross thickness of
about 16 feet. The moderate to good porosity and poor permeability observed in zones A through C are
the result of bioturbation and diagensis. The trapping mechanism observed in the pool is predominately
structural, consisting of three-way anticlinal closures sealed against the downthrown side of faults, with
throws generally greater than 50 feet. Within the MPU development area, an orthogonal fault pattern
segments the oil accumulation into three known equilibration regions, with known oil-water contacts at
9,150', 9,050', and 8,950' true vertical depth subsea. Oil gravity in the Sag River is about 39 degrees
API. Original oil in place (“OOIP”) for the pool is estimated to be is about 62 million barrels.
Strat Column
Orig. Oil in Place: 62 MMSTB (CO 423 Order)
Production: Prod Chart Prod Report Prod Data
Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls)
Cumulative 1,589,010 0 1,595,848 1,414,010
2001 Total 248,017 0 227,643 3,738
2002 Total 129,943 0 179,126 2,838
http://www.state.ak.us/local/akpages/ADMIN/ogc/.../Milne%20Point,%20Sag%20River%20Oil/1_Oil_1.htm (1 of 2) [3/28/2008 5:12:21 PM]
Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool
2003 Total 101,470 0 121,173 0
2004 Total 47,771 0 27,750 1,487
2003 Daily Rate 278 0 332 4
2004 Daily Rate 131 0 76 0
Change (%)-53%0 -77%-
Continued: 1 > 2 > 3
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Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool
Home Orders Staff Calendar Contact Us
AOGCC Pool Statistics Milne Point Unit, Sag River Oil Pool
Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 21 July 2005 Page: 1 > 2 > 3
EOR Injection:Disposal Injection in Field:
Chart Report Data
Gas (Mcf)Water Disposed Fluids
Cumulative 248,518 1,081,039 Cumulative 0
2001 Total 0 0 2001 Total 0
2002 Total 0 653,155 2002 Total 0
2003 Total 179,033 335,767 2003 Total 0
2004 Total 69,485 92,117 2004 Total 0
2003 Rate (per day) 491 920 2003 Rate (per day) 0
2004 Rate (per day) 190 252 2004 Rate (per day) 0
Change (%) -61% -73%Change (%) 0
Field Development Information:
Wells In Field
Type Well Status 2004 2003 2002 2001 2000
Producer Oil Producer 218 200 182 168 145
Injector Water Injector 67 63 53 46 46
Gas Injector 1 1 1 1 1
WAG Injector 37 37 36 32 27
Water Supply 8 8 8 8 8
Disposal 0 0 0 0 0
Non-Operating OPR Shut Down 0 0 2 2 0
Suspended 8 8 7 7 6
Abandoned 47 47 42 38 32
Total 386 364 331 300 265
Active Completions in Pool (Month of December):
Type Well Status 2004 2003 2002 2001 2000
Oil Producer Flowing 0 0 0 0 0
Gas Lift 0 0 0 1 0
Pump 1 1 0 1 0
Shut-In 1 1 2 1 3
Service Well Water Injector 0 0 1 0 0
Gas Injector 0 1 1 0 0
WAG Injector 0 0 0 0 0
Water Supply 0 0 0 0 0
Shut-In 1 0 0 0 0
Disposal Undef.Disposal Injector 1 0 0 0 0
Shut-In 0 0 0 0 0
Total 3 3 3 3 3
Continued: 1 > 2 > 3
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Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool
Home Orders Staff Calendar Contact Us
AOGCC Pool Statistics Milne Point Unit, Sag River Oil Pool
Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 21 July 2005 Page: 1 > 2 > 3
Permitted Wells in Pool:
Type Well Status 2004 2003 2002 2001 2000
Development New 0 0 0 0 0
Sidetrack 0 0 0 1 1
Multilateral 0 0 0 1 0
Service New 0 0 0 0 0
Sidetrack 0 0 0 0 0
Multilateral 0 0 0 0 0
Exploration New 0 0 0 0 0
Sidetrack 0 0 0 0 0
Total 0 0 0 2 1
Reservoir Properties:
Description 2004 2003 2002 2001 2000
Reference Datum - ft. below sea level 8700 8700 8700 8700 8700
Temperature - ° F 234 234 234 234 234
Porosity - % 8-21 18 18 18 18
Permeability - md .1-10 4 4 4 4
Swi - % 40 40 40 40 40
Oil Viscosity @ Orig. Press. cp .28-.35 .28-.35 .28-.35 .28-.35 .28-.35
Oil Viscosity @ Sat. Press. cp -----
Orig. Press. - psi 3100 4425 4425 4425 4425
Bubble Point - psi -----
Current Reservoir Press. - psi 2722 2722 3000 3350 3350
Oil Gravity - ° API 39 39 39 39 39
Gas Specific Gravity (Air = 1.0).65 .65 .65 .65 .65
Gross Pay - ft.77 77 77 77 77
Net Pay - ft.22-36 30 30 30 30
Orig. FVF - RB/STB 1.41-1.56 1.41-1.56 1.41-1.56 1.41-1.56 1.41-1.56
Bubble Point FVF - RB/STB -----
Orig. GOR - SCF/STB 784-974 784-974 784-974 784-974 784-974
GOR (current yr.) - SCF/STB 581 1194 1379 887 0
References / Summary
Continued: 1 > 2 > 3
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State of Alaska, Oil and Gas Conservation Commission
Production History for:
Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells
Producing
MILNE POINT, SAG RIVER OIL Pool
Jan 1958 Dec 2004
May 1995 37185 26407 189325 1
Jun 1995 21396 17879 976030 1
Jul 1995 7464 6059 506917 1
Aug 1995 14355 6124 1976725 1
Sep 1995 26297 11296 1395930 1
Oct 1995 30788 14676 4436431 1
Nov 1995 17349 12844 4850830 1
Dec 1995 17818 17501 4705028 1
172652 112786 190370Year Total
Jan 1996 20342 1374 5851431 1
Feb 1996 14866 3964 3801929 1
Mar 1996 4412 2239 126199 1
May 1996 12588 9655 2007218 2
Jun 1996 28041 28168 474227 2
Jul 1996 41304 47971 2614956 2
Aug 1996 36424 43767 7060962 2
Sep 1996 27694 33081 6466462 3
Oct 1996 69552 43456 4619385 3
Nov 1996 43924 42033 6311378 3
Dec 1996 47228 43519 6841989 3
346375 299227 473113Year Total
Jan 1997 42768 47075 6411188 3
Feb 1997 46164 45599 5797094 4
Mar 1997 42504 42982 53604110 4
Apr 1997 38966 52212 67451118 4
May 1997 33684 46700 54436102 4
Jun 1997 18635 21199 3309190 3
Jul 1997 19942 25851 26150105 4
Aug 1997 16466 21524 927172 4
Sep 1997 23164 26252 214776 3
Oct 1997 32211 33770 72393 3
Nov 1997 26317 38455 64176108 4
Dec 1997 22061 35789 7540993 3
362882 437408 508539Year Total
Jan 1998 22783 21313 7567993 3
Feb 1998 18168 22944 6132081 3
Mar 1998 24488 28278 66373123 4
Apr 1998 20449 24253 2594093 4
May 1998 15662 18935 83562 2
Jun 1998 11684 13590 57756 2
Jul 1998 13882 13170 31761 2
Aug 1998 10093 9778 64036 2
Sep 1998 6656 7449 48746 3
Oct 1998 6701 7793 39231 1
Nov 1998 7400 7903 11030 1
Dec 1998 3952 4287 20430 1
161918 179693 232874Year Total
2/17/2005 Page 1 of 2
State of Alaska, Oil and Gas Conservation Commission
Production History for:
Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells
Producing
MILNE POINT, SAG RIVER OIL Pool
Jan 1958 Dec 2004
Jan 1999 3986 6338 7330 1
Feb 1999 3504 4115 1028 1
Mar 1999 4497 3693 72131 1
Apr 1999 3825 2840 20121 1
May 1999 2170 1619 4619 1
17982 18605 1051Year Total
Feb 2001 19 5 17 1
Mar 2001 10538 5473 90031 1
Apr 2001 20802 15056 041 2
May 2001 31909 23916 049 3
Jun 2001 42839 35509 124290 3
Jul 2001 38368 29011 159582 3
Aug 2001 13982 13425 055 2
Sep 2001 11327 10154 044 2
Oct 2001 21378 18869 042 2
Nov 2001 29966 33560 060 2
Dec 2001 26889 35102 062 2
248017 220080 3738Year Total
Jan 2002 14126 20331 18743 2
Feb 2002 4964 5638 028 1
Mar 2002 24812 14083 256758 2
Apr 2002 19951 21959 8431 2
May 2002 16632 25853 031 1
Jun 2002 12307 23982 030 1
Jul 2002 9674 22029 027 1
Aug 2002 11639 17960 027 1
Sep 2002 12935 22325 030 1
Oct 2002 2903 4966 07 1
129943 179126 2838Year Total
Apr 2003 10592 12227 027 1
May 2003 9036 3773 030 1
Jun 2003 16248 13758 030 1
Aug 2003 391 590 04 1
Sep 2003 16953 18856 024 1
Oct 2003 19321 30073 031 1
Nov 2003 17855 26768 030 1
Dec 2003 11074 15128 025 1
101470 121173 0Year Total
Jan 2004 8829 9123 022 1
Feb 2004 7091 9376 013 1
May 2004 4274 2721 010 1
Jun 2004 3562 404 09 1
Sep 2004 4385 976 08 1
Oct 2004 6386 1382 012 1
Dec 2004 13244 3768 148721 1
47771 27750 1487Year Total
1,589,010 1,595,848 1,414,010Pool Total
2/17/2005 Page 2 of 2
State of Alaska, Oil and Gas Conservation Commission
Injection History for:
Month Liquid (BBL)Gas (MCF)DaysInj Wells
Injecting
MILNE POINT, SAG RIVER OIL Pool
Jul 2002 102801 031 1
Aug 2002 62434 031 1
Sep 2002 123473 030 1
Oct 2002 126066 031 1
Nov 2002 118140 030 1
Dec 2002 120241 031 1
Year Total 653155 0
Jan 2003 77456 031 1
Feb 2003 118055 028 1
Mar 2003 109843 031 1
Apr 2003 30413 829228 1
May 2003 0 3871631 1
Jun 2003 0 4068930 1
Jul 2003 0 624224 1
Aug 2003 0 3129731 1
Sep 2003 0 3034430 1
Oct 2003 0 1332628 1
Nov 2003 0 659720 1
Dec 2003 0 353015 1
Year Total 335767 179033
Jan 2004 0 1751822 1
Feb 2004 0 2916429 1
Mar 2004 465 2280331 1
Apr 2004 63939 029 1
May 2004 27713 012 1
Year Total 92117 69485
Pool Total 1,081,039 248,518
2/17/2005 Page 1 of 1
MPU - Sag River
Oil Pool
Deadhorse
Harrison Bay
Dalton HwyTrans-AlaskaPipelineNuiqsut
NPRA
B e a u f o r t S e a
North Slope, Alaska
Modified from
AK DNR Div. Oil & Gas 2005
NORTHSTAR UNIT
DUCK ISLAND UNIT
COLVILLE RIVERUNIT
MILNE POINTUNIT
KUPARUK RIVERUNIT
PRUDHOE BAY UNIT
OOOGURUKUNIT
TUVAAQUNIT
NIKAITCHUQUNIT
Reference List
MILNE POINT, SAG RIVER OIL
Alaska Oil and Gas Conservation Commission, 1998, Conservation Order No. 423,
available online at:
http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co400_449/co423.htm
Alaska Oil and Gas Conservation Commission, 2005, Production Database
2/17/2005 Page 1 of 1
Milne Point, Sag River Oil
Summary
The Sag River Oil Pool lies within the Milne Point Unit ("MPU"), and it is defined as the accumulation of
hydrocarbons common to and correlating with the intervals between the measured depths of 8,810' and
8,884' in the Milne Point Unit A-01 well. Regular production from the pool began in 1995. Three wells
and 3 sidetracked wellbores were drilled to develop the pool: 1 producer from MPU C-Pad, 1
sidetracked producer from MPU E-Pad, 3 wellbores from MPU F-Pad (1 producer, 1 sidetracked
producer, and 1 sidetracked injector), and 1 producer from MPU K-Pad.1 Well spacing within the pool
is 40 acres.2 Since 2002, only 1 well within the pool (MPU F-33A) has been on production. Water-
alternating-gas injection began in MPU F-73A during July 2002 in support of MPU F-33A, but was
halted in May 2004. During 2004, monthly production from the pool averaged 173 barrels of oil per
day, 109 thousand cubic feet of gas per day and 186 barrels of water per day.3
Geology
Within the pool, the Sag River consists of late Triassic to early Jurassic-aged, thin marine shelf
sediments: At Milne Point, the Sag River is divided into four laterally extensive sub-zones that are
named, from deepest to shallowest, A through D. The zones are fairly uniform in thickness and have
similar reservoir properties. Zone D is non-reservoir siltstone and shale at the top of the Sag River; its
average gross thickness is about 21 feet. Zone C is the uppermost sandstone interval. It is generally
non-reservoir with porosity to 17%, permeability to 2.9 millidarcies, and an average gross thickness of
10 feet. Zone B is the primary reservoir interval, with porosity to 21%, permeability to 23 millidarcies,
and an average gross thickness of 30 feet. Zone A is the basal sandstone unit, which uncomformably
overlies the Shublik Formation. At Milne Point, it is composed almost entirely of non-reservoir
sandstone, with porosity to 18%, permeability to 1.2 millidarcies, and an average gross thickness of
about 16 feet. The moderate to good porosity and poor permeability observed in zones A through C
are the result of bioturbation and diagensis. The trapping mechanism observed in the pool is
predominately structural, consisting of three-way anticlinal closures sealed against the downthrown side
of faults, with throws generally greater than 50 feet. Within the MPU development area, an orthogonal
fault pattern segments the oil accumulation into three known equilibration regions, with known oil-water
contacts at 9,150', 9,050', and 8,950' true vertical depth subsea.4 Oil gravity in the Sag River is about
39 degrees API. Original oil in place (“OOIP”) in the pool is estimated to be is about 62 million barrels.5
SFD
Revised 2/17/2005
1 Alaska Oil and Gas Conservation Commission, 2005, Production Database 2 Alaska Oil and Gas Conservation Commission, 2003, Conservation Order No. 423, available online at:
http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co400_449/co423.htm 3 Alaska Oil and Gas Conservation Commission, 2005, Production Database 4 Alaska Oil and Gas Conservation Commission, 2003, Conservation Order No. 423, available online at:
http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co400_449/co423.htm 5 Alaska Oil and Gas Conservation Commission, 2003, Conservation Order No. 423, available online at:
http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co400_449/co423.htm
AAOrder No.DateOperator Description Current
MILNE POINT FIELD
SAG RIVER OIL POOL
Current Orders
550 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well
testing and allocation of production.
Y
496 0CO 08-Sep-03BP EXPLORATI Order issued re: proposed rules regulating sustained casing
pressures in development wells in all pools within the Milne Point
Field.
Y
10 0BAIO 23-Apr-02BP EXPLORATI Amendment to AIO-10A to allow for underground injection of fluids
for enhanced oil recovery in Sag River Oil Pool.
Y
423 0CO 06-May-98BP Defines and establishes pool rules for devlopment of the Sag River
Oil Pool in the MPU. Amended by CO 496.
Y
390 0CO 07-Mar-97BP Exception to allow completion of producing wells w/out a packer
when electric submersible pumps are installed.
Y
MPU Sag River Pool
AOGCC12/10/04MILNE POINT UNIT - AVERAGE PRODUCTION RATE Sag River Oil Pool05001,0001,5002,0002,5003,0003,5004,0004,5005,000Jan-95 Jan-96 Jan-97 Jan-98 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04YearBarrels of Oil per DaySAG KSAG FSAG ESAG C
0.01.02.03.04.05.0Producing Oil WellsMILNE POINT FIELD, SAG RIVER OIL POOL020406080100Water Cut ( % )MILNE POINT FIELD, SAG RIVER OIL POOL0.10.5151050100Cum Oil Prod ( MMbbl )Cum Water Prod ( MMbbl )Cum Gas Prod ( MMMcf )MILNE POINT FIELD, SAG RIVER OIL POOL1995969798992000010203040.0010.0050.010.050.10.51510Oil Rate (CD) ( Mbbl/d )Water Rate (CD) ( Mbbl/d )Gas Rate (CD) ( MMcf/d )Gas / Oil Ratio ( Mcf/bbl )MILNE POINT FIELD, SAG RIVER OIL POOL
0.01.02.03.0Wells on Gas InjectionWells on Water InjectionMILNE POINT FIELD, SAG RIVER OIL POOL - EOR INJECTION0.010.050.10.51510Cum Gas Inj ( MMMcf )Cum Water Inj ( MMbbl )MILNE POINT FIELD, SAG RIVER OIL POOL - EOR INJECTION200203040.010.050.10.51510Gas Inj Rate (CD) ( MMcf/d )Water Inj Rate (CD) ( Mbbl/d )MILNE POINT FIELD, SAG RIVER OIL POOL - EOR INJECTION
