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Alaska Oil and Gas Conservation Commission
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HomeMy WebLinkAbout1998 Endicott Oil Pool'Al
SP EXPLORATION
December 28, 1999
Dave Johnston, Chairman
Alaska Oil and Gas Conservation Commission
3001 Porcupine Drive
Anchorage, Alaska 99501
BP Exploration (Alaska) Inc.
900 East Benson Boulevard
P.O. Box 196612
Anchorage, Alaska 99519-6612
(907) 561-5111
RE: Year End 1998 Endicott Oil Pool - Reservoir Surveillance Report
Dear Mr. Johnston:
Attached is the 1998 annual Endicott Reservoir Surveillance Report. This report
is a compilation of three reports tracking the key Well Pressure Program, Key
Well Gas -Oil contact Monitoring Program, and the Waterflood Surveillance
Program.
As in the past, BP Exploration extends an offer to brief the AOGCC regarding the
reservoir depletion status and future plans for the pool. Please advise Susan
Brown at 564-4375 concerning a convenient time for a meeting or if there are
any -ether questions.
Since e ,
Gary Osborne
ENS Subsurface Team Leader
cc: Brown, Susan
Ding, Eric
Dunham, Don
Johnson, Kyle
Millholland, Madelyn
Stewart, Graham
Working Interest Owners
RECEIVED
�'Ar( 07 2000
Alaska Oil & Gas Cons. Commission
Anchorage
1998 Reservoir Surveillance Report
Endicott Oil Pool
December, 1999
Waterflood Surveillance Program
Key Well Pressure Monitoring Program
GOC Monitoring Program
1998 Endicott Reservoir Surveillance Report
Table of Contents
Page 1
Waterflood Surveillance Program:
Introduction
Page 2
Project Status Summary
Page 2
Injection Well Performance
Page 3
Waterflood Tracer
Page 3
Future Waterflood Plans
Page 4
Endicott Field Well Plat (highlighting injectors)
Figure 1
Summary Of Pertinent Data
Table 1
Reservoir Balance For Waterflood Sands
Table 2
Injection Well Data
Table 3
Waterflood Tracer Plat
Figure 2
Pressure Monitoring Program:
Introduction
Page 5
1998 Pressure Monitoring Program
Page 5
1999 Pressure Monitoring Program
Page 6
Endicott Field Well Plat (highlighting Key Wells)
Figure 3
1998 Key Well Pressure Monitoring Program
Table 4
1998 Key Well Pressure Data
Table 5
1999 Key Well Pressure Monitoring Program
Table 6
GOC Monitoring Program:
Introduction
Page 7
1998 Gas -Oil Contact Monitoring Program
Page 8
1999 GOC Monitoring Program
Page 8
Endicott Field Well Plat (highlighting Key Wells)
Figure 4
Gas -Oil Contact Monitoring Program
Table 7
Appendices:
1. Production Rate vs Time Plots
2. Cumulative Crude Production & Percent Recovered vs Time Plots
3. Cumulative Voidage & Reservoir Pressure vs Time Plots
4. Injection Well Rate & Pressure vs Time Plots
5. Endicott Oil Field Historical Key Well Pressure Data
6. Pressure vs Time Endicott Field
Endicott Oil Field
1998 Waterflood Surveillance Program
Introduction
Conservation Order 202 Rule 12 approved a field wide waterflood project for the Endicott
reservoir. The waterflood was to be implemented within two years of regular production
and a waterflood plan submitted three months before actual water injection began. By
letter, dated June 15, 1988, the plan to implement the field wide waterflood was approved
and semi-annual pressure maintenance project reports stipulated. The Endicott
Waterflood development was recognized as complete and fully operational by letter, dated
January 11, 1991, and annual waterflood surveillance reporting was approved. This
document constitutes the report for 1998.
Proiect Status Summary
Production and gas re-injection was initiated in October 1987. Water injection was initiated
in February 1988. This report summarizes the cumulative effects of pressure maintenance
since field start-up and details activities in 1998.
Figure 1 shows a map of the field with current well statuses including the existing water
injectors, gas injectors and oil producers. Well service additions and changes from the last
report date include:
• 1-47A/M-20
Sidetracked MPI 2A producer
• 3-31/K-32
New well SDI 2B/2A producer
• 3-17C/M-31
Sidetracked & suspended SDI 3A producer
• 1-33A/N-24
Sidetracked & suspended MPI 2A producer
• 3-07A/L-29*
Sidetracked & completed MPI 2A producer
• 3-17D/M-31
Sidetracked & completed SDI 3A producer
• 3-37/L-35
Converted from a producer to an injector
* SDI injector sidetracked to an MPI bottomhole location as a producer
(01/98)
(02/98)
(06/98)
(08/98)
(09/98)
(10/98)
(8/98)
Table 1 summarizes total production, injection, and well count data for the entire pool
through December 1998.
2
Table 2 details the reservoir balances by area and subzone through December 1998. The
three areas are fault blocks which are identified as the MPI (Main Production Island area),
the SDI (Satellite Drilling Island area), and the NFB (Niakuk Fault Block). The NFB is
included in with the MPI on Table 3 for simplicity. There are six subzones (3C, 3B, 3A, 2B,
2A, 1) which are the general geological subdivisions within the Kekiktuk formation.
Appendix 1 provides graphs of Production and Gas/Oil Ratio versus Time by area and
subzone.
Appendix 2 provides graphs of Cumulative Crude Production and Percent Original Oil in
Place (OOIP) Recovered versus Time by area and subzone.
Appendix 3 provides graphs of Cumulative Voidage and Reservoir Pressure versus Time
by area and subzone.
Iniection Well Performance
Table 3 provides an overview of the performance of each of the pressure maintenance
injectors. Included in this exhibit are the start-up dates, cumulative injection volumes, and
current target injection rates.
Appendix 4 provides graphs of the injection rates, injectivity index, and wellhead pressure
versus time for each of the active injectors.
Waterflood Tracer
The waterflood tracer program was started in 1988. A total of 19 water injectors have been
traced: 3 in 1988, 8 in 1989, 6 in 1991, and 3 in 1996 (well 2-44/R-12 was traced with two
different tracers). The program has been very successful in identifying the progress of the
waterflood as depletion matures. Numerous interventions have been implemented on
producers and injectors to improve ultimate recovery.
Figure 2 is an Endicott well plat showing the dates and types of tracers injected and the
producing locations where the tracer has appeared.
3
Future Waterflood Plans
In 1999 there are no plans to trace additional water injectors. Forty-one wells will be
monitored for tracer, and fifteen wells will be monitored for sea water breakthrough.
Commissioning of a compressor for miscible gas injection is ongoing. The design rate is
45 mmscfpd of miscible injectant into water -alternating -gas patterns. The initial phase of
Endicott's Enhanced Oil Recovery project will involve 8 MI injectors. Injection is planned
into two injectors at a time for a period of a few months for each pattern.
Reservoir pressure and gas and water movement will continue to be closely monitored
through logging, mechanical isolations, and well testing. Changing pressure maintenance
needs will continue to be met through new well drilling, converting producers to injectors,
profile modification of existing injectors, and target injection rate control. Offtake will
continue to be optimized through new well drilling, remedial work on existing producers,
and production rate control.
4
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1998
WELL STATUS
ENDICOTT FIELD
FIGURE 1 SCALE: DATE:
1" = 4000' 11/15/99
00bord.don
7
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142
EN�ICpii FIE1D
SUBZONE30
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TABLE 1
ENDICOTT OIL POOL
SUMMARY OF PERTINENT DATA
(as of December 31, 1998)
Water Injection Start-up: February 29, 1988
Endicott Production since Field Start -Up:
Black Oil and Condensate (MMSTB) 367.4
NGL's (MMSTB) 12.9
Gas (BSCF) 1,016.3
Water (MMB) 319.0
Endicott Injection since Field Start -Up:
Gas (BSCF) 887.4
Water (MMB) 636.7`
Wells in Operation:
Oil Producers
55
Gas Injectors
4
Water Injectors
19
Waste Water Disposal
1 **
Total
79
* Water injection volumes do not include Cretaceous injection
** Cretaceous injector not shown in Exhibit 1
Produced Volume
Oil
Free Gas
Water
Total
Iniected Volumes
Gas
Water
Total
Net Va_ 'da a�Volumes_
Total
Produced Volume
Oil
Free Gas
Water
Total
Iniected Volumes
Gas
Water
Total
Net Voidace Volumes
Total
TABLE 2
ENDICOTT OIL POOL
RESERVOIR BALANCE FOR WATERFLOOD SANDS
Throughl2/31/98
(Values in MMRB)
Produced Volume
1
MPI REGION by SUBZONE
3C
313
3A
2B
24.25
4.76
60.92
67.29
29.08
4.28
82.08
105.95
9_64
3.32
51_78
39_70
62.96
12.36
194.77
212.94
52.59
0.00
146.56
136.72
19_19
7.78
90_01
81_05
71.78
7.78
236.57
217.77
-8.82
4.5B
41.80
-4.83
125.41
0.16
SDI REGION by SUBZONE
3C
3B
3A
2B
46.70
14.23
30.13
81.73
50.07
12.89
3.62
17.41
29_93
13_34
25_16
56_15
126.70
40.46
58.91
155.29
55.30
0.47
0.00
0.00
67_98
29_48
54_54
151.44
123.27
29.96
54.54
151.44
3.43
10.50
4.37
3.85
FIELD TOTALS by SUBZONE
39
36
36
2B
Produced Volume
1
MPI TOTAL
125.93
Gas
Oil
70.94
18.99
91.04
149.02
Free Gas
79.15
17.17
85.70
123.36
Water
39_57
16_66
76_94
95_85
Total
189.66
52.82
253.68
368.23
Iniected Volumes
1
MPI TOTAL
125.93
Gas
107.89
0.47
146.56
Water
87_16
37_26
144.55
Total
195.06
37.74
291.11
Net Vddace Volumes
547.64
92_96
0.00
Total
-5.39
15.08
-37.43
NOTE: Water injection volumes do not include Cretaceous injection
2A
1
MPI TOTAL
125.93
2.59
285.74
149.48
1.79
372.66
55_23
0_50
160.16
330.64
4.88
818.56
211.77
0.00
547.64
92_96
0.00
291.00
304.73
0.00
838.63
25.91
4.88
-20.08
2A
1
SDI TOTAL
37.83
0.06
210.67
43.69
0.09
127.78
43_89
0.02
168.49
125.41
0.16
506.94
0.00
0.00
55.77
61_33
0_00
364.77
61.33
0.00
420.55
64.08
0.16
86.39
2A
1
FIELD TOTAL
163.76
2.65
496.41
193.17
1.88
500.43
99_11
0.52
328.66
456.05
5.05
1,325.50
136.72
211.77
0.00
603.41
232.49
154.30
0.00
655.77
369.21
366.07
0.00
1,259.18
-0.98
89.99
5.05
66.32
12/19/99 98 AOGCC Table 2.xls
MPI Reservoir Area
Cumulative Cumulative Start -Up
Target
Well Name
MBWPD
1-05/0-20
50.00
1-23/0-15
20.00
1-37/P-24
0.00
1-41/0-23
10.00
2-06/J-22
2-12/0-16
0.00
2-16/M-16
19.00
2-22/L-14
17.00
2-24/M-12
0.00
2-34/P-14
24.00
*2-44/R-12
0.00
2-54/0-12
5.00
2-64/U-10
2.00
2-70/1.1-15
2.00
5-01/SD-07
5-02/SD-10
12.00
SDI Reservoir
Area
2.25
Target
Well Name
MBWPD
1-15/P-25
1-43/P-26
1-51 N-20
1-69/V-19
**3-07/N-28
3-37/L-35
3-41/K-39
3-45/M-39
3-47/0-35
+ 4-02/Q-28
4-04/T-26
4-08/P-27
4-14/R-34
4-40/P-43
++ 4-48/K-43
28.00
2.00
4.00
0.00
17.00
24.00
4.00
2.00
0.00
7.00
14.00
4.00
0.00
0.00
Table 3
Endicott Oil Pool
Injection Well Data
Through 12/31/98
Target
Cumulative Cumulative Start -Up
MMSCFGPD
MMBW
BSCFG
Date
50.00
0.00
215.53
May -88
23.58
0.00
Mar -95
23.11
0.00
Dec -87
15.37
0.00
Dec -95
140.00
0.00
293.35
Oct -87
30.00
0.00
77.34
Apr -93
39.25
0.00
Mar -89
31.68
0.00
May -89
2.25
0.00
Mar -95
33.43
0.00
Nov -89
20.77
0.00
Mar -89
37.94
0.00
Jan -92
1.46
0.00
Dec -90
14.39
0.00
Jul -89
110.00
0.00
219.13
Oct -87
39.29
0.00
Jan -88
Target
Cumulative Cumulative Start -Up
MMSCFGPD
MMBW
BSCFG
Date
0.00
0.00
82.02
Jun -93
72.91
0.00
Apr -89
5.47
0.00
Apr -93
11.46
0.00
Dec -90
47.61
0.00
Apr -89
1.81
0.00
Aug -98
72.21
0.00
Apr -89
27.72
0.00
Sep -88
7.90
0.00
Mar -95
8.48
0.00
May -88
23.00
0.00
Mar -90
21.53
0.00
May -93
35.17
0.00
Oct -89
7.03
0.00
Oct -92
11.85
0.00
Dec -90
Total 217.00 330.00 636.67 887.37
Note: Water injection volumes do not include Cretaceous injection.
Sidetracked in 9/97
" Converted to production in 8/98
+ Converted to production in 4/96
++ SI since 4/97
98 AOGCC Table 3.xls
ENDICOTT FIELD
*�w
M
MIDFIELD FAUL
OPROD WELL
INJ/PREVIOUS PROD
[NJ WELL
P&A WELL
E
gR�gltr,
4.28:
TRACER TYPES
OTritium
®
Ammonium
QColbalt-57
4-0220-28
Thiocynanate (SCN)
•
Mg & SO4 ®
Sodium Benzoate (P-14)
OSodium
22
Potassium Hexacyanocobaltate
OCarbon-14/SCN
O
Carbon-1411PA
Cobalt -60
Colbalt 60
Tridum
E
gR�gltr,
4.28:
1996 Program
Well Tracer
1-23U15 Sodium 22
4-( P27 Carbon-144PA
440P-43 Potassium Hex
P38
M.Miliholland 9/30190
FIGURE 2
1988 Program
Well
Tracer
137/P-24
Colbaft-60
4-0220-28
Carbon-14/SCN
5-02SD-10
Tritium
1989 Program
Well
Tracer
2-1&M-16
Carbon-14/SCN
2 -ML -14
Cobalt -60
244/+12
Tridum
2-70A115
Cob -A-60
307/-M
Cobalt -67
341M39
Tritium
345M39
Cobalt -60
4-142%34
Carbon-14/SCN
1991 Program
Well
Tracer
169//-19
Carbon-14/SCN
4-W-26
Tritium
44W-43
Carton 14/SCN
1-43/P-26
AmmoniumThic
234/P-14
AmmoniumThic
2-44/8-12
Sodium Benzoa
1996 Program
Well Tracer
1-23U15 Sodium 22
4-( P27 Carbon-144PA
440P-43 Potassium Hex
P38
M.Miliholland 9/30190
FIGURE 2
Endicott Oil Field
1998 Pressure Monitoring Key Well Program
Introduction
A pressure monitoring key well program was submitted to and approved by the AOGCC in
Administrative Approval No. 202.5. This program supersedes the requirements of
Conservation Order 202, Rule 6(c), and complies with Conservation Order 202, Rule 6(d).
The pressure monitoring program key wells were chosen to provide a real coverage of
reservoir pressure in each of the major subzones in the two production areas of the
reservoir. Historically, the Key Well Program has included at least two points of pressure
measurement for each of the producing subzones, one from each MPI and SDI area, to
ensure that a valid picture of reservoir pressure behavior can be drawn.
Seventeen wells were identified as key wells to track pressure variation within the five
major subzones in each of the two main producing areas of the reservoir. Changes have
been made through time as reservoir and well characteristics changed in order to provide
representative data. Much more reservoir pressure data, other than the key well data, is
gathered to address specific well and reservoir surveillance needs.
Figure 3 is an Endicott well plot showing the location of the seventeen 1998 Key Well
reservoir pressures.
1998 Pressure Monitoring Program
Table 4 summarizes the wells included in the Proposed 1998 Key Well Program. The
1998 program consisted of seventeen key wells, the total key well count increasing by one
from 1997 as a Zone 1 pressure monitoring well was added.
Table 5 summarizes the key well pressure data gathered in 1998. Two substitutions from
the proposed program were made in 1998 due to operational and/or reservoir
considerations. A static pressure from recently drilled well 2-44A/Q-11 was used for the
MPI 3B in place of well 2-42/P-13 to minimize production impacts. The SDI 3B static
pressure data from well 3-05/0-29 was used in place of nearby well 3-23/N-32, again to
minimize production impacts.
5
Appendix 5 lists, by subzone, all current and former key wells with the reservoir pressures
obtained since field start-up. These pressures are adjusted to a datum depth of 10,000
feet TVDSS, as is customary in our state pressure reporting.
Appendix 6 plots, by subzone and area, key well reservoir pressures along with all other
reservoir pressure surveys. Generally speaking there is good agreement between the key
well reservoir pressures and other pressure gathered around the field. There are a few
exceptions where wells are in small pressure isolated regions.
1999 Pressure Monitoring Program
The Endicott Key Well Pressure Monitoring Program has been successful in establishing
and monitoring pressure trends within each of the major subzones. Although changes in
well service and configuration occasionally necessitate changes to the pressure monitoring
program in order to obtain representative data, BPX recommends no changes in the 1999
program.
Table 6 summarizes the 1999 Endicott key well pressure monitoring program proposal.
As in past years, the amount of static pressure data obtained annually will likely exceed the
seventeen wells included in the proposed 1999 Key Well Pressure Monitoring Program. At
the operators discretion, representative reservoir pressures gathered in other wells during
1999 might be substituted for the proposed key wells to minimize production impacts or for
operational necessity. As the field matures, we will be increasingly challenged with
managing this need for additional pressure data while minimizing the cost and associated
production impacts.
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BP EXPLORATION (ALASKA) INC.
1998 KEY WELL
RESERVOIR PRESSURE DATA
ENDICOTT FIELD
FIGURE 3 SCALE: DATE:
1" = 4000' 11/15/99
4000bord.dor
PIP O�. 429 i 32 I 33
E..I.TT FIELD
SUB20NEX ® Om�,�
SUUONE36 0 �•onu
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SUBiONEt
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1998 KEY WELL PRESSURE MONITORING PROGRAM PROPOSAL
ENDICOTT FIELD
TABLE 4
Well Area Subzone(s) Comments
1-25A/K-22 MPI Z1
1-01/J-19
Niakuk
2A
Commingled 2A / 1 pressure
2-18/L-16
Niakuk
3A
Single zone high angle well
2-26/N-14
Niakuk
3B/3C
Commingled pressure.
1-33/M-23
MPI
2A
1-61/Q-20
MPI
2B
Single zone high angle well
1-39/P-17
MPI
3A
Lower 3A monitor point.
2-42/P-13
MPI
3B
Lower 3A monitor point
2-52/S-14
MPI
3B/3C
Commingled pressure.
2-58/S-09
MPI
3C
Eastern area
3-39A/1-37
SDI
2A
3-33/K-37
SDI
2B
3-35/L-36
SDI
3A
Upper 3A monitor point
4-32/K-38
SDI
3A
Lower 3A monitor point
3-23/N-32
SDI
3B
4-18/S-30
SDI
3C
Eastern area
1-57/R-23
SDI
3C
Western area
Notes on changes between the 1997 and 1998 proposed programs:
• 1-25A/K-22 has been added as a Zone 1 reservoir pressure monitor well.
• 1-33/M-23 has replaced 1-31/M-21 to minimize production impacts for MPI 2A.
• 3-39A/1-37 has replaced 3-15/K-33 since opportunities exist to produce additional zones
within the well.
• 3-33/K-37 has replaced 3-39/J-39 since the well has been side-tracked to a new location
within the reservoir.
98 AOGCC Table 4.xls
1998 KEY WELL PRESSURE MONITORING PROGRAM DATA
ENDICOTT OIL FIELD
TABLE 5
Well Area Subzone(sl Pressures
1-25A/K-22 MPI Z1 2962 Asia
1-01/J-19
Niakuk
2A
4313 psia
2-18/L-16
Niakuk
3A
4190 psia
2-26/N-14
Niakuk
313/3C
2739 psia
1-31/M-21
MPI
2A
4288 psia
1-61/Q-20
MPI
213
4577 psia
1-39/P-17
MPI
3A
4661 psia
2-44A/Q-11*
MPI
313
4632 psia
2-52/S-14
MPI
313/3C
5387 psia
2-58/S-09
MPI
3C
3209 psia
3-39A/1-37
SDI
2A
4229 psia
3-33/K-37
SDI
213
4798 psia
3-351-36
SDI
3A (Upper)
5250 psia
4-32/K-38
SDI
3A (Lower)
4583 psia
3-05/0-29**
SDI
313
4437 psia
4-18/S-30
SDI
3C
5375 psia
1-57/R-23
SDI
3C
5166 psia
DATUM: 10000' TVDss
Static pressure data obtained on well 2-44A/Q-11 (new well);
substituted for MPI 3B monitor well 2-42/P-13.
** Static pressure data obtained on well 3-05/0-29; substituted
for SDI 313 monitor well 3-23/N-32.
98 AOGCC Table 5.xis
1999 KEY WELL PRESSURE MONITORING PROGRAM PROPOSAL
ENDICOTT FIELD
TABLE 6
Well Area Subzone(s) Comments
1-25A/K 22 MPI Z1
1-01/J-19
Niakuk
2A
2-181-16
Niakuk
3A
2-26/N-14
Niakuk
3B/3C Commingled pressure
1-33B/L-24
MPI
2A
1-61/Q-20
MPI
2B
Single zone high angle well
1-39/P-17
MPI
3A
Lower 3A monitor point
2-42/P-13
MPI
3B
Lower 3A monitor point
2-52/S-14
MPI
313/3C
Commingled pressure
2-58/S-09
MPI
3C
Eastern area
3-39A/1-37
SDI
2A
3-33/K-37
SDI
2B
3-35/L-36
SDI
3A
Upper 3A monitor point
4-32/K-38
SDI
3A
Lower 3A monitor point
3-23/N-32
SDI
3B
4-18/S-30
SDI
3C
Eastern area
1-57/R-23
SDI
3C
Western area
Notes on changes between the 1998 and 1999 proposed programs:
' 1-33B/L-24 has replaced 1-33/M-23 (to be sidetracked in early 1999, still a 2A offtake point).
98 AOGCC Table 6.xls
Endicott Oil Field
1998 GOC Monitoring Key Well Program
Introduction
A GOC (Gas - Oil Contact) Monitoring Key Well Program was submitted for the Endicott
Field in October 1988, one year after field start-up in accordance with AOGCC
Conservation Order 202, 9(c). At that time, BP Exploration sought, and received a waiver
(Administrative Approval Order 202.5) from the State of Alaska, to initiate the key well
program for Endicott on a subzone basis for each of the three distinct reservoir
development areas of the field. Administrative Order No. 232.1 provided an exemption for
key well GOC monitoring in Sections 1, 3, 7, 9, 10, and 35 of the field as being outside a
real gas cap limits of the reservoir.
The key well program for Endicott is based on the understanding of a limited ability to
monitor fieldwide gas cap movement. A scarcity of wells and limited lateral offset from gas
severely restricts the use of time lapse cased -hole logging as a viable tool to predict gas
movements at Endicott. It is recognized that narrow hydrocarbon corridors caused by a
relatively steep 6 degree structural dip combined with sands separated by thick laterally
continuous shales promotes under -running as a common gas movement mechanism. In
addition to the continuous shales that separate the reservoir into six vertically isolated
subzones, major east -west trending fault offsets provide either lateral hydraulic isolation or
partial pressure communication between the three main Endicott development areas.
Key wells were designed to focus on the 3A and 2B subzones, the more massive high
quality sands where more regional GOC effects could be noted. Key wells to monitor gas
movement in the 2A (MPI), 3B, and 3C are not practical due to the close proximity to gas
and complex stratigraphy (shaliness), respectively. In these cases, it is highly doubtful time
lapse logging would provide meaningful data with respect to regional GOC movements.
Six key wells were originally proposed and approved for GOC monitoring: 1-01/J-19,
1-09/J-18, 1-27/P-20, 1-29/M-25, 2-04/M-19, 3-01/N-29. Waivers from continued GOC
monitoring have been received for three of the key wells due to gas influx from maturing
reservoir depletion. Following are the wells no longer monitored:
• 1-09/J-19 : 3A gas under -run.
• 2-04/M-19 : 2B gas under -run.
• 3-01/N-29 : Completed as 3A & 2B producer after waterflood response.
7
Figure 4 is an Endicott well plot showing the six GOC Monitoring Program wells.
1998 GOC Monitoring Program
During 1998, a total of 18 cased - hole pulsed and compensated neutron logs (PNL / CNL)
were acquired, including the three key well surveys. These logs are routinely used for
reservoir surveillance and diagnosing well problems in order to develop reservoir
management plans and remedial interventions. Following is a list of the wells from which
neutron logs were acquired during 1998:
Well
Location
Well
Location
1-01/J-19 `
NFB
3-11/M-30
SDI
1-09A/L-21
MPI
3 -09/L -28A
SDI
1-21/K-25
MPI
3-15/K-33
SDI
1-27/P-20'
MPI
3-19/R-28
SDI
1-29/M-25'
MPI
3-29/J-32
SDI
1-61/Q-20
MPI
3-31/K-32
SDI
2-18/L-16
NFB
3-43/P-36
SDI
2-28/P-19
MPI
4-20/M-35
SDI
3-07A/L-29
MPI
4-28/N-37
I SDI
Total
1 18
'Key Wells
Table 7 details the history of pulsed neutron log observations in the six GOC key wells,
including the 1998 observations. Three of the six original key wells continue to provide
useful gas -oil contact movement information, as gathered through time lapsed cased hole
neutron logging. Note the use of the CNL is precluded in all wells except 1-27/P-20 due to
size restrictions of down -hole completion equipment employed at Endicott. The table also
identifies GOC movement and gas influx by under -running major shales within Subzones
3A and 2B.
1999 GOC Monitoring Program
The Endicott GOC Monitoring Key Well Program has been successful in establishing
baseline and repeat PNL / CNL surveys to monitor and document rates of gas cap
movement and gas under -runs in the six key wells. BPX recommends that the 1999 GOC
Key Well Program continue with the three remaining key wells: 1-01/J-19, 1-27/P-20,
1-29/M-25. Production logging and down -hole mechanical isolation of gas prone intervals
has also provided a means to monitor gas influx. Together, these tools constitute an
effective means to monitor gas movement at Endicott.
8
Y0191 O
' ISLAND
22 23 24
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BP EXPLORATION (ALASKA) INC.
1998 ENDICOTT
GOC MONITORING PROGRAM
ENDICOTT FIELD
FIGURE 4 SCALE: DATE:
1° = 4000 11/15/99
•rrr�r � rr
7
anL ( "
M✓m
DUCK
162
J'
1988-98 GOC KEY WELLS
r.' 1988-94 GOC KEY WELD
1988-91 GOC KEY WELD
3 2 I
Q DUCK I \
10 � 11
ENDICOTT OIL POOL
GAS OIL CONTACT MONITORING PROGRAM
STATUS REPORT- 12!31198
WELL
GOC SUBZONE
DATE OF BASELINE
1-01/J-19
2B
31 -Jan -89
1-091,1-18
3A
11 Jan -88
1-271P-20
3A
29 -Feb -88
1-291M-25
- 2B
- 3 -Feb -88
2.04/M-19
213
1 -Mar -88
3.01/N-29
3A/2B
28 -Feb -88
MONITOR SURVEYS
1
2 -Jan -90 _.
14 -Jan -88
21 -Feb -87
3 -Feb -88
1 -Mar -88
19 -Feb -89
NM, GUR (2A3)
NM
NM (OHCNL)
GCX (25')/GUR(2B3)
- GCX (26)
NM
2
13 -Feb -91
- 1 -Feb -89
9 -May -88
8 -Aug -88
20 -Mar -89
12 -Feb -90
GCX (5), GUR (2A3)
- GCX (4),GUR(2B5)
NM
GCX (16')
GCX(35'), GUR (262)
NM
3
31 Jan -91
_ 14 -Feb -90
4 -Aug -88 --
6 -Aug -89
16 -Jun -90
28 -Feb -91
GCX (4'), GUR (2A3)
GCX (10'), GUR(2B5)
NM, GUR (2B3)
GCX (7)
GCX(4'), GUR (2A3)
NM
4
29 -Mar -93
_ 24 -Feb -91
12 -Apr -89
5 -Sep -90
29 -Jun -91
Waiver -No Monitor
NM, GUR (2A3)
_ GCX (7'), GUR (285)
NM,GUR (2133)
- GCX (6)
GCX (NM), GUR (2A3)
6
28 -Jul -94
16 -Mar -92
17 -Jun -90
25 -Mar -91
14 -Jun -92
NM, GUR (2A3)
GCX (5'), GUR (2B5)
NM, GUR (2133)
GCX (4)
GCX (2'), GUR (2A3)
6
24 -Jun -95
22 -Aug -93
4 -Jul -91
17 -Mar -92
25 -Jun -93
GCX (Sin 213), GUR (2A)
GCX(21, GUR(265)
GCX (7'), GUR (263 / 3A2)
GCX (16)
NM, GUR (2A3)
7
18Jul-96
30 -Jul -94
13 -Jun -92
24 -May -93
9 -Jul -94
NM, GUR 10' 2A
NM, GUR (2135)
GCX (9'), GUR (2B3/3A2)
GCX(16), GUR(2A3)
- NM, GUR (2A3)
8
10 -Aug -97
Waiver -No Monitor Logs
26 -Jun -93
29 -Jul -94 -
•11 -Aug -97
CX (-30' in 2B), GUR (2A)4ell sidetracked to new local
GCX(U), GUR(3A2)
GCX (13'), GUR (2A3) _'GCX
(18' in 2B), GUR (2A3
9
27 -Sep -98
31 -Jul -94
26Jun-95 -.
Waiver -No Monitor Logs
GCX (NM in 213), GUR (2A)
GCX (2'), GUR (2B3)
GCX (5' in 28), GUR (2A3)
10
27 -Mar -95 --
18 -Jul -96
GCX (2' in 3A)
NM
11
19 -Jul -96
1 -Aug -97
NM
"GCX (25' in 28), GUR (2A3)
12
-
13 -Jul -97
25 -Sep -99
CX (NM in 3A), GUR (2B3)GCX (NM in 28), GUR (2A3)_
13
25 -Sep -98
CX NM in 3A), GUR 2
NM = NO GAS CAP MOVEMENT
• Note: obtained neutron log
for reservoir survellaince for infill drilling Program
GUR = GAS UNDERRUN
(STRAT. SEQ.)
GCX = GAS CAP EXPANSION
(FEET TVD)
98 AOGCC Table 7.xls
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1987 88 89 90 91 92 93 94
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1987 88 89 90 91 92 93 94 95
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1987 88 89 90 91 92 93 94 95 96 97 98
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PRODUCTION
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10000
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104
1000
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103
1
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1987 88 89 90 91 92 93 94 95 9697 98
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1987 88 89 90
10000
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1000
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91 92 93 94 95 96 97 98
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1987 88 89 90 91 92 93
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BP EXPLORATION, ENDICOTT FIELD
Z
0
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- - --- - 50
0.10
40
30
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10
n
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BP EXPLORATION, ENDICOTT FIELD
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4000
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ia8/ 88 89 90 91 92 93 94 95
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BP EXPLORATION, ENDICOTT FIELD
50
40000
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CUMULATIVE PRODUCTION & %OOIP
50
40
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20
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10
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1987 88 89 90 91 92 93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
so
40000
30000
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20000
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BP EXPLORATION, ENDICOTT FIELD
>0
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1987 88 89 90 91 92 93 94 95
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CUMULATIVE PRODUCTION & %OOIP
40000
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1987
88 89 90 91 92 93 94 95
50
40
30
20
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98 97 98
BP EXPLORATION, ENDICOTT FIELD
2500
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CUMULATIVE PRODUCTION & %OOIP
500
1987 88 89 90 91 92 93 94 95
50
40
30
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96 97 98
BP EXPLORATION, ENDICOTT FIELD
50000
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CUMULATIVE PRODUCTION & %OOIP
1987 88 89 90 91 92
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93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
15000
12000
9000
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6000
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CUMULATIVE PRODUCTION & %OOIP
1987 88 89 90 91 92 93 94 95
40
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96 97 98
BP EXPLORATION, ENDICOTT FIELD
25000
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15000
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CUMULATIVE PRODUCTION & %OOIP
1987 88 89 90 91 92 93 94 95
-IM
40
MIIIIIIIIIIIIIII
I�
0
96 97 98
BP EXPLORATION, ENDICOTT FIELD
100000
80000
60000
a
a
0
_Y
D
U
40000
0
1987
REGION: SDI ZONE: K2B(23)
CUMULATIVE PRODUCTION & %OOIP
88 89 90 91 92 93 94 95
50
40
30
Ko
10
0
96 97 98
BP EXPLORATION, ENDICOTT FIELD
REGION: SDI ZONE: K2A(13)
CUMULATIVE PRODUCTION & %OOIP
50000
40000
50
30000
40
20000
10000
30
20
o
10
n
1987 88 89 90 91 92 93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
50
40
30
20
10
0
REGION: SDI ZONE: Ki(2)
CUMULATIVE PRODUCTION & %OOIP
3.0
2.0
1.0
A
987 88 89 90 91 92 93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
U
Q
_a
0
O
U
5000
4000
a
3000
5
O
Y
9
3
U
v 2000
1000
0
REGION: NIAK ZONE: K3C(5)
CUMULATIVE PRODUCTION & %OOIP
987 88 89 90 91 92 93 94 95
40
30
10
0
96 97 98
BP EXPLORATION, ENDICOTT FIELD
REGION: NIAK ZONE: K3B(3)
CUMULATIVE PRODUCTION & %OOIP
80 0.8
60 0.6
40 0.4
20 0.2
00.0
1987 88 89 90 91 92 93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
2(
16000
a
12000
a
0
Y
E
U
v 8000
4000
0
REGION: NIAK ZONE: K3A(4)
CUMULATIVE PRODUCTION & %OOIP
1987 88 89 90 91 92 93 94 96
-.l
40
30
20
10
........., 0
96 97 98
BP EXPLORATION, ENDICOTT FIELD
U
a
a
0
O
C)
U
4500
O
Y_
E
U
3000
1500
0
REGION: NIAK ZONE: K2B(4)
CUMULATIVE PRODUCTION & %OOIP
987 88 89 90 91 92 93 94 95
50
W
c�
20
10
` 0
96 97 98
BP EXPLORATION, ENDICOTT FIELD
REGION: NIAK ZONE: K2A(4)
CUMULATIVE PRODUCTION & %OOIP
20000
16000
12000
O
Y_
U
8000
i
4000
40
6�
20
10
n
1987 88 89 90 91 92 93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
20,000,000
I
REGION: MPI ZONE: K3C
CUMULATIVE VOIDAGE (INJ - PROD)
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91
M
Im
5000 a
ui
tr
D
w
4000 a
O
W
3000 LU
M
1000
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
cum. voidage
•
♦ pressure
5,000,000
♦ ♦
! •
0,000,000
A •
A
♦ • ♦ •
♦T ♦ ♦
♦♦
• • • y AA ♦ >t • ♦ ♦
•
• ♦ A♦
5,000,000
- - ♦ • •
♦ •
0
5,000,000
-
0,000,000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91
M
Im
5000 a
ui
tr
D
w
4000 a
O
W
3000 LU
M
1000
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
X
sovvxazi
-2,000,000
m
CC
LLT -3,000,000
C7
Q
O_
O
> -4,000,000
LU
5,000,000
U
-6,000,000
-7,000,000
REGION: MPI ZONE: K313
CUMULATIVE VOIDAGE (INJ - PROD)
—} cum. voidage
• pressure
• A •
V • •• • • y
•
• •• •
• •
-8,000,000
Jan -87
Jan -88 Jan -89 Jan -90 Jan -91
o
...
...
a
4500 W
M
w
4000 Cr
tr
O
Ir
3500 W
w
...
2500
2000
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
Co
rr
Li
C)
O
w
a
J
U
REGION: MPI ZONE: K3A
CUMULATIVE VOIDAGE (INJ - P IOD)
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98
,,,
4600 U)
LLT
Q
Z)
U)
03
Lu
4400 a
O
OIL
>
w
U)
4200 LU
4000
3800
Jan -99
BP EXPLORATION, ENDICOTT FIELD
•
—� cum. voidage
♦ •
• A r •
♦ pressure
80,000,000
A `
•
♦ ♦ •
:
• • • •
! •
50,000,000
♦ • •
•
♦♦
40,000,000
20,000,000
0
20,000,000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98
,,,
4600 U)
LLT
Q
Z)
U)
03
Lu
4400 a
O
OIL
>
w
U)
4200 LU
4000
3800
Jan -99
BP EXPLORATION, ENDICOTT FIELD
lrj6
1
1
REGION: MPI ZONE: K2B
CUMULATIVE VOIDAGE (INJ - PROD)
q
a
LJ
10 [[
U
LU
2
a
Cc
O
10 Ir
Lu
w
Ir
2
- - - - - - - - 4000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
♦--cum. voidage
A• •• • • • pressure
• •
•
•
0,000,000
48
•
•
•
•
i
•
•
•
• y •
5,000,000
• • A • A46,
♦ • • •
• • •
•
0
_ —
44,
5,000,000
421
0,000,000
q
a
LJ
10 [[
U
LU
2
a
Cc
O
10 Ir
Lu
w
Ir
2
- - - - - - - - 4000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
16,000,000
12,000,000
I
0 8,000,000
C.7
O
W
F
4,000,000
U
0
REGION: MPI ZONE: K2A
CUMULATIVE VOIDAGE (INJ - PROD)
—e—cum. voidage
♦ ♦ • ♦ pressure
•
♦ ♦
•
Y •
♦
♦ ♦
• ♦ ♦ ♦
• ♦
♦ ♦ y♦
♦ ♦
-4,000,000
Jan -87
mifil,
uJ
4600 CE
D
U)
U)
W
Q
a-
4400
4400 1E
W
U)
W
m
4200
4000
Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
0
:7
uJ -5,000,000
C7
0
O
w
F-
-10,000,000
D
U
-15,000,000
REGION: SDI ZONE: K3C
CUMULATIVE VOIDAGE (INJ - PROD)
♦♦ AAA •
• M t•
• • ke•
t • • •
y •
A
- —cum. voidage
♦ pressure
• •
•
M
7000
6000
d
LU
5000 CL
D
07
07
LU
d
Q
0
a000 �
w
07
w
Ir
-20,000,000 -1 I-- — i I— + --1 2000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
0
-3,000,000
M
2
W
C7 -6.000,000
>
W
F-
-9,000,000
U
-12,000,000
REGION: SDI ZONE: K3B
CUMULATIVE VOIDAGE (INJ - PROD)
A
scum. voidage
♦ pressure
♦
A
A
5000
T)
CL
W
4000 LC
D
U)
CO
W
Q
IL
Q
O
3000 Ir
W
W
fr
2000
-15,000,000 -F I i i { ---I —.___,___,.____-.._ 11oo0
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
scum. voidage
♦ pressure
♦
A
A
5000
T)
CL
W
4000 LC
D
U)
CO
W
Q
IL
Q
O
3000 Ir
W
W
fr
2000
-15,000,000 -F I i i { ---I —.___,___,.____-.._ 11oo0
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
0
-10,000,000
LJ
C7
¢
O
O
> -20,000,000
W
H
J
D
D
U
�
-40,000,000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91
REGION: SDI ZONE: K2B
CUMULATIVE VOIDAGE (INJ - PROD)
EEO
mo
a
ui
cr
D
w
4500 d
O
>
W
W
Q
4000
3500
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
0
im
W
0
O
> -40,000,000
w
H
J
D
U
-60,000,000
-80,000,000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91
REGION: SDI ZONE: K2A
CUMULATIVE VOIDAGE (INJ - PROD)
614A1.7
C61.P.
d
w
m
D
cn
w
4000 a
w
O
w
Cn
W
0-1
3500
3000
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
0
-2,000.000
m
Cr
W
0
a
O
> -4,000,000
W
H
J
D
U
-6,000,000
-8,000,000
REGION: NFB ZONE: K3C
CUMULATIVE VOIDAGE (INJ - PROD)
• ——cum. voidage
•♦
♦ pressure
♦ •
• ♦
♦ •
SWO
\A A•
♦ •
4000
C/J
ui
CC
D
U)
W
W
3000 a
a=
O
W
W
Co
W
fr
ME
ue,
Jan -87
Jan -88
Jan -89
Jan -90
Jan -91
Jan -92
Jan -93
Jan -94
Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
3,000,000
2
m 2
CE
L
V
Q
Q1
W
F
Q
J
5
Z:) 1
U
REGION: NFB ZONE: K3B
CUMULATIVE VOIDAGE (INJ - PROD)
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98
61414197
w
m
D
w
4000
O
W
07
W
m
3000
2000
Jan -99
BP EXPLORATION, ENDICOTT FIELD
—mecum. voidage
• pressure
,500,000
•
• •
,000000
• •
• •
'500,000-
'000,000
500,000
•
0
_
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98
61414197
w
m
D
w
4000
O
W
07
W
m
3000
2000
Jan -99
BP EXPLORATION, ENDICOTT FIELD
42
-10,000,000
Lu
a
0
O
> -20,000,000
w
F--
J
U
-30,000,000
REGION: NFB ZONE: K3A
CUMULATIVE VOIDAGE (INJ - PROD)
mecum. voidage
♦ pressure
♦ ♦ i ♦ ♦ •
♦ M ♦ •
♦ •
♦ •
♦ Z
♦ ♦
•
-40,000,000 - -i i
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91
m
a
ui
D
U)
C0
LU
4000 d
Q
O
W
W
cr
3000
- - - - 2000
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
M
W
W
Q
O_
O
W
>
Q
J
D
0
. �
3,000,000
0
-3,000,000
REGION: NFB ZONE: K2B
CUMULATIVE VOIDAGE (INJ - PROD)
♦ -a cum. voidage
t ♦ pressure
♦ _
Y
♦ ♦
♦: ♦ ! ♦ ♦
...
4800
(IJ
d
W
M
D
Cn
Lu
4600 d
fr
O
>
Cc
W
W
M
4400
MCC
Jan -87
Jan -88
Jan -89
Jan -90
Jan -91
Jan -92
Jan -93
Jan -94
Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
0
anvnrvnm
i�
�r
LU
c7
a
ca
O
> -20,000,000
w
F=
J
D
U
-40,000,000
REGION: NFB ZONE: K2A
CUMULATIVE VOIDAGE (INJ - PROD)
—*—cum. voidage
• • pressure
•
•
•
•
•!
•
•
5000
4800
Fn
a
ui
W
w
4600 d
O
w
LU
CE
4400
4200
Jan -87
Jan -88
Jan -89
Jan -90
Jan -91
Jan -92
Jan -93
Jan -94
Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
0
-1,000,000
m -2,000,000
w
L
O
0
O
> -3,000,000
w
>
F
J
D
2
U
-4,000,000
-5,000.000
ZONE: K1
CUMULATIVE VOIDAGE (INJ - PROD)
mecum. voidage
♦ • ♦ pressure
•
♦ ♦ ♦ •
♦ ♦
♦
-6,000,000
Jan -87
Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95
al
4500
4000 a
ui
Q
Z)
w
3500 d
O
LU
LU
3000 w
2
2500
2000
Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
MPI 3A lowest 3A2
Z 5Z5z
interval open
1-05 Injection History
�'
Z
°°�
ry
3 3
3
n
3
y�
3
3
140,000. -
120,000.
100.000.
Y
J
E 80.000
00
a
3
RY1r1iU
4500
4000
60.000.
Y
40,000.
20.000.
0.
inj survey inj survey ini survey
Kr -85 tracer 7/89 12/89 5/90
injected 7/19/88
3000
2500
_ 2000
Sli T �� O, O, M V 'S Vl V1 V� lD f� n W GC Cli
Date
�Inj Rate - WHP
SDI
FV/FIV/FMMH
Initial perfs in
FIII & FII
140,000.
120,000.
100,000
v
E 80,000.
W
E
0
—o
60,000.
._
40,000.
20,000,
1-15 Injection History
APF in FV, FIV,
d upper 171118/93
- 4 -
water wash 1/9 _ - - -
1 I -�
water wash 7/96
inj survey inj survey mj survey Date inj survey inj survey
9/93 8/94 7/95 8/96 9/97
1-15Inj Rate - Wh Pres Avg
5000
4500
3500
eo
c
A.
2500
2000
41500
rn
MPI 2A
160,000
140.000
120.000
.0 100,000
E
Q
C
80,000
y
60,000
40,000
20,000
2-06 Injection History M �N
5000
4500
4000
3500
3000 G
3
2500
2000
1500
0 1000
c. O�� Ul Q, O,
oo � c c a c� � � o, � 91 �
75
inj survey Date
SF6 tracer 12/89
injected 4/28/88 �Inj Rate - WHP
MPI FV/FIV/Fill
140000
1?0000
100000
80000
60000
40000
20000
0
inj survey
5/93
2-12 Injection History
n
rn rn
a
rn rn
L L
N N
L
L L
2
4,500.
M101f,
c c
inj survey inj survey Date inj survey
8/94 5/95 8/97
—Inj Rate - WHP
3
3,500.
3,000.
2,500
MPI 2B/2A 2A perfs shot 3/81;
squeezed 3/87.
28 perfs shot 6/87.
140.000
120,000
Temp survey indicates
channel from 2B to 2A
100.000
2
J
80,000
a
60,000
y
40,000
20,000
rnrn
°�
mm
�n
'-
m �
cu
vt
c1�
�
�
m v
5-01 Injection History N N
y y
s
s
t
m a
wash 9/92
IA/tbg comm when
SSSV insert is (ut - -
5,000.
4,500.
4,000.
co
c
c.
x
3
3,500.
3,000.
0 -1 2,500.
m oo c�
� o o a c� N m m 7 v vt v, e m m
� � m a, c c,
7 73
inj survey
3/88 gas redistributed from 2B to 3B/3� Date
CH3T tracer when 2-12i POI in 4/93
injected 1/26/88 ®Inj Rate - WIIP
5
Q
t 40000
W
J
O
ZO 30000
U
J
Z
Cr 20000
W
F -
Q
r
10000
40
30
X
W
Q 20
Z_
z 10
0
0
1-2310-15:tot
Daily Water Injection
25C
20C
150
100
500
I
1987 88 89 90 91 92 93 94 95 96 97 98 0
D
A
E
BP EXPLORATION, ENDICOTT FIELD
50000
71
40000
W
J
O
ZO 30000
U
W
Z_
CC 20000
W
H
a
E
10000
50
40
x
W 30
O
z 20
Z
10
0
0
1987 88 89 90
1-371P-24:tot
Daily Water Injection
2500
2000 mm
a
w
Q
CD
U)
1500 w
CCIL
Q
W
2
1000 �
W
500
0
91 92 93 94 95 96 97 98
;;
a0 ai 98
BP EXPLORATION, ENDICOTT FIELD
50000
40000
W
J
O
ZO 30000
F-
U
W
Z
2 20000
W
10000
50
40
x
W 30
0
z 20
z
Z
10
0
1-41/0-23:tot
Daily Water Injection
1987 88 89 90 91
92 93 94 95 96 97 98 v
LO
0
m
>Z
W
Cr
0 W
cr
CL
D
Q
W
2
0
W
ao ai ea
BP EXPLORATION, ENDICOTT FIELD
50000
Z
40000
W
J
O
7
ZO 30000
f-
U
W
z
Z
W 20000
H
Q
9
10000
0
1987 88 89 90 91
1-69N-19:tot
Daily Water Injection
030X40-
30--
x
W
0 20
Z_
z 10
0
1967
88
2500
2000
a
W
er
D
07
1500 W
Q
IL
Q
W
2
100O J
W
500
0
92 93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
a
9 40000
W
J
O
Z 30000
O
H
U
W
z
Z
CC 20000
W
H
Q
r
10000
40
30
X
W
20
Z_
z 10
0
0
1987 88 89 90 91 92 93 94 95 96 97 98 V
2-44/R-12:tot
Daily Water Injection
J
ao ai V6
BP EXPLORATION, ENDICOTT FIELD
50000
r
40000
W
J
O
O 30000
H
U
W
z
Z
EC 20000
W
H
Q
C�
x
W
Z
..
10000
0
6
4
2
0
0
1987 88 89 90 91
2-70/U-15:tot
Daily Water Injection
2500
W
R
D
1500 W
M
CL
Q
W
2
1000 J
W
500
0
92 93 94 95 96 97 98
0
94 98
BP EXPLORATION, ENDICOTT FIELD
mill
-.1
Bill
m
Lmj�mimm
I111I11111l1I11
0
94 98
BP EXPLORATION, ENDICOTT FIELD
a
40000
W
2i
O
OZ 30000
H
U
W
z
Z
Cr 20000
W
H
Q
10000
3-07/N-28:tot
Daily Water Injection
1987 88 89 90
91 92 93 94 95 96 97 98 V
0
R
0 m
a
W
ccD
0 w
Q
a
Q
W
2
0 J
W
C0 90 9/ 98
BP EXPLORATION, ENDICOTT FIELD
100-
80
X
W
60
O
z
40
Z_
20
0
1987
88
91 92 93 94 95 96 97 98 V
0
R
0 m
a
W
ccD
0 w
Q
a
Q
W
2
0 J
W
C0 90 9/ 98
BP EXPLORATION, ENDICOTT FIELD
50000
Z
40000
W
J
O
OZ 30000
F
U
W
Z_
0= 20000
n
10000
40
30
X
W
0 20
Z_
z 10
0
0
3-37/L-35:tot
Daily Water Injection
2500
2000
1500
1000
500
0
1987 88 89 90 91 92 93 94 95 96 97 98
m
.Q
W
Q
07
W
Cr
CL
0
Q
W
S
J
J
W
a0 wf &0
BP EXPLORATION, ENDICOTT FIELD
50000
a
40000
LU
J
O
ZO 30000
H
U
LU
z
Z
Cr 20000
LU
H
Q
10000
100
80
x 60
LU
0
z 40
z
Z
3-41/K-39:tot
Daily Water Injection
2500
2000 m
>Z
LL
0-
1500 w
a
w
2
1000 �
w
500
10
1987 88 89 90 91 92 93 94 95 96 97 98
el vo
BP EXPLORATION, ENDICOTT FIELD
50000
Z
40000
W
J
zO 30000
v
LU
z
C-- 20000
W
F -
Q
C
10000
40
30
X
W
20
z
z 10
0
0
1987 88 89 90
3-45/M-39:tot
Daily Water Injection
91 92 93 94 95 96 97 98 V
r
0 y
d
W
D
0 W
D:
a
0
LU
O J
W
co C/ ud
BP EXPLORATION, ENDICOTT FIELD
50000
n
40000
w
J
O
Oz 30000
H
v
w
z
z
CC 20000
LU
Q
9
10000
0
3-47/Q-35:tot
Daily Water Injection
2500
Cu
000 y
a
w
0:
V1
500 w
0=
a
0
w
x
000 J
w
500
0
1987 88 89 90 91 92 93 94 95 96 97 98
F_
030X40-
30---
x
LU
O 20
z_
z 10
0
1987 88 89 90 91 92 93 94 95 96 97 98
BP EXPLORATION, ENDICOTT FIELD
5(
40000
W
J
O
ZO 30000
H
U
W
z
Z
m 20000
W
H
Q
C
10000
0
4-02/0-28:tot
Daily Water Injection
2500
2000
1500
�kI 1000
I
500
0
1987 88 89 90 91 92 93 94 95 96 97 98
m
N
a
W
Q
Z)
W
Cr
CL
0
Q
W
T
J
J
W
9ti 97 98
BP EXPLORATION, ENDICOTT FIELD
40-
30
X
W
n
20
z
z
10
0
1x67
66
m
N
a
W
Q
Z)
W
Cr
CL
0
Q
W
T
J
J
W
9ti 97 98
BP EXPLORATION, ENDICOTT FIELD
50000
M
40000
W
J
O
J
zO 30000
w
W
z
z
¢ 20000
LLIH
Q
10000
At
x 40
W
C)
z
Z 20
0
1987 88 89 90 91
4-04/T-26:tot
Daily Water Injection
92 93 94 95 96 97 98 V
.y
a
W
Cr
D
LU
x
0-
w w
x
J
W
ao V/ 9tl
BP EXPLORATION, ENDICOTT FIELD
51
Z
40000
LU
2
M
J
O
zO 30000
U
LU
z
W 20000
H
Q
10000
40
30
X
w
0 20
z_
z 10
0
4-08/P-27:tot
Daily Water Injection
2500
2000 'm
�a
LU
Cr
1500 W
Cr
a
Q
w
2
1000 Jj
w
500
1987 88 89 90 91 92 93 94 95 96 97 98 0
9H 97 98
BP EXPLORATION, ENDICOTT FIELD
s
,. 40000
W
J
O
Z 30000
O
H
U
W
Z
CC 20000
W
H
Q
10000
M,
X 40
W
C
Z
Z 20
0
4-14/R-34:tot
Daily Water Injection
2500
m
2000
CL
W
U)
U)
1500 W
a
Q
W
1000 J
W
500
10
1987 88 89 90 91 92 93 94 95 96 97 98
ao W 96
BP EXPLORATION, ENDICOTT FIELD
.=@
n
40000
W
O
ZO 30000
H
U
W
z
Z
W 20000
W
F-
10000
.fie,
x 40
W
Z
Z 20
0
0
1987 88
4-40/P-43:tot
Daily Water Injection
89 90 91 92 93 94 95 96 97 98 V
A
N
CL
W
cr
07
W
m
a
Q
W
2
J
W
ao ai 86
BP EXPLORATION, ENDICOTT FIELD
50000
40000
W
5
Z)
J
U
zU 30000
H
U
W
Z
W 20000
H
Q
0
10000
40
30
X
W
20
z
z 10
A
0
1987 88 89 90
4-48/K-43:tot
Daily Water Injection
91 92 93 94 95 96 97 98 v
m
�p 'my
a
W
Z)
V)
0 W
Cr
a
Q
W
2
0 J
W
!3
BP EXPLORATION, ENDICOTT FIELD
50000
Z
40000
W
J
O
ZO 30000
U
W
z
Z
20000
W
F -
Q
10000
0
1987 88 89 90 91
5-02/S D-10: tot
Daily Water Injection
40-
30
X
W
0 20
z
z 10
t
0
JT
1987
88
89
2500
m
2000 N
a
W
CC
0)
1500 W
OL
a
Q
W
2
1000 J
W
500
0
92 93 94 95 96 97 98
ao ar as M U/ ass
BP EXPLORATION, ENDICOTT FIELD
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
1987
9/5/1987 1-4710-21
9/5/1987 1-47/Q-21
10/1/1987 1-09/J-18
10/1/1987 1-09/J-18
11/10/1987 3-01/N-29
11/22/1987' 1-09/J-18
12/5/1987 3-01/N-29
12/12/1987 1-47/Q-21
12/12/1987 1-47/Q-21
1988
1/19/1988 ! 1-35/0-25
1/27/1988 2-52/S-14
1/27/1988 2-52/S-14
1/28/1988 1-29/M-25
2/2/1988 1-09/J-18
2/3/1988 2-62/0-17
2/15/1988 2-08/K-16
2/15/1988 2-08/K-16
2/15/1988 2-08/K-16
2/28/1988 3-47/Q-35
3/1/1988 3-33/K-37
3/1/1988 3-33/K-37
3/27/1988 3-01/N-29
3/30/1988 3-35/L-36
4/22/1988 ! 1-35/0-25
5/25/1988 3-05/0-29
6/5/1988 1-55/R-25
6/5/1988 1-55/R-25
6/9/1988 1-29/M-25
6/10/1988 1-35/0-25
6/11/1988 ! 3-01/N-29
6/11/1988 2-62/Q-17
6/16/1988 ! 2-26/N-14
6/16/1988 2-26/N-14
6/21/1988 3-01/N-29
6/29/1988. 2-26/N-14
6/29/1988 2-26/N-14
7/23/1988 3-05/0-29
7/27/1988 2-26/N-14
7/27/1988 2-26/N-14
7/30/1988 4-26/0-34
7/30/1988 4-26/0-34
7/30/1988 1 4-26/0-34
7/30/1988 4-26/0-34
SDI
PI/NFB
3A
f3-C---3P3A
2B
2A i Z1
4897
46961
4600',
4897
144661,
14889
4514
4889
4460
4813
4631,
1 4800
1
4631
4497
4809'
14494
4784
4600
4784,
'.4590
!
47671
147881,
4850
4736
48001
4750
4789.
I
475811
4726
14742
4671',
4820
4820
4838!
4838
3718
3718
1
SDI
3C 1 3B
3A
2B 2A Z1
4839
46961
4600',
144661,
4569,
4514
4551
4460
48001
1 4800
1
4497
14494
4497
4600
'.4590
4528
4850
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
7/30/1988
4-26/0-34
9/4/1988
3-11/M-30
9/4/1988
3-11/M-30
9/4/1988
3-11/M-30
9/4/1988
3-11/M-30
9/4/1988
3-11/M-30
9/18/1988
4-26/0-34
10/7/1988
3-11/M-30
10/8/1988
2-26/N-14
10/8/1988
2-26/N-14
10/10/1988
1-09/J-18
10/11/1988
3-05/0-29
10/13/1988
2-14/0-16
10/20/1988
2-08/K-16
10/20/1988
3-47/Q-35
10/21/1988
1-29/M-25
10/22/1988
1-35/0-25
10/23/1988
3-01/N-29
11/17/1988
1-35/0-25
11/25/1988
1-09/J-18
11 /25/1988
1-09/J-18
12/4/1988
3-11/M-30
12/13/1988
1-49/P-21
12/13/1988
2-08/K-16
1989
4524
1/5/1989
2-26/N-14
1/5/1989
2-26/N-14
1/15/1989
3-35/L-36
2/2/1989
2-26/N-14
2/2/1989
2-26/N-14
2/21/1989
4-26/0-34
3/19/1989
1-29/M-25
3/20/1989
2-46/Q-15
3/20/1989
2-46/Q-15
3/20/1989
2-46/0-15
3/20/1989
2-46/Q-15
3/25/1989
1-35/0-25
3/29/1989
3-47/Q-35
4/3/1989
3-33/K-37
4/18/1989
4-26/0-34
4/27/1989
2-26/N-14
4/27/1989
2-26/N-14
5/7/1989
1-49/P-21
5/11/1989
2-14/0-16
5/11/1989
2-14/0-16
2
SDI
MPI/NFB
3B
3C
3B
3A
2B
2A
Z1
3320
I
I
i
I
I
3320'
4576
4525
4628
4563
4678
4436
,4532
4504
4644
45901
4721,
4359
4700
4524
4615
4490
4993
4622
39091
I
4563
4278
4491
2800'
4019
1
2800
2894
2894
4635
4450
4732
4509
4731
46311
32B7
I
3287
4440''
4623
4614
2
SDI
3C
3B
3A
26
2A
Z1
44001
4469
4576
4525
4563
4436
4411
4504
45901
4359
4524
4490
4993
39091
I
4278
4405
4019
1
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE
WELL
6/6/1989
1-09/J-18
6/6/1989
1-09/J-18
6/21/1989
2-08/K-16
6/21/1989
2-08/K-16
6/21/1989
2-46/Q-15
6/21/1989
2-46/Q-15
8/3/1989
2-52/S-14
8/3/1989
1-47/Q-21
8/3/1989
2-52/S-14
8/3/1989
1-47/Q-21
8/4/1989
2-46/0-15
8/4/1989
2-46/Q-15
8/15/1989
3-47/Q-35
8/19/1989
3-05/0-29
8/21/1989
3-01/N-29
9/12/1989
4-50/K-41
9/12/1989
4-50/K-41
9/23/1989
4-26/0-34
9/23/1989
4-26/0-34
9/24/1989
1-35/0-25
9/25/1989
2-62/Q-17
10/29/1989
3-11/M-30
11/25/1989
2-52/S-14
11/25/1989
2-52/S-14
11/27/1989
3-05/0-29
12/22/1989
2-46/Q-15
12/22/1989
2-46/Q-15
12/30/1989
3-33/K-37
12/30/1989
3-33/K-37
1990
1/3/1990
1-45/Q-26
217/1990
2-26/N-14
2/7/1990
2-26/N-14
2/25/1990
3-05/0-29
2/26/1990
2-62/Q-17
2/26/1990
1-47/0-21
2/26/1990
1-47/Q-21
2/28/1990
1-35/0-25
3/1/1990
1-49/P-21
3/17/1990
2-14/0-16
3/17/1990
2-14/0-16
3/19/1990
1-09/J-18
3/19/1990
1-09/J-18
3/22/1990
1-55/R-25
3/22/1990
1-55/R-25
3
SDI
3C
MPUNFB
2B
Ej
K3A
4317
26
I 2A
Z1
4332
4634,
4421
4780
4640
42801
4600
41431
4600
44401
4420
4417
4420
4437
44321
4411
4456
4506
4410
4322
4322
4456
4410
!
4427
4427
4570
4600
4505
4505
4456
4456
4006
4006
4642
4453
4453
4611
4557
4606
4628
4667
4639
3
SDI
3C
3B 3A
I
2B
2A
21
4317
I
I
i
i
i
I
i
I
4332
4421
4780
42801
14000
41431
44401
4417
4437
44321
4411
4506
4322
4322
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
4/5/1990 1 1-55/R-25
4/5/1990 1-55/R-25
4/9/1990 4-26/0-34
4/9/1990 4-26/0-34
4/29/1990 4-50/K-41
4/29/1990 4-50/K-41
5/l/1990 1-45/Q-26
5/1/1990 1-45/Q-26
5/2/1990 2-18/L-16
5/2/1990 2-181-16
5/2/1990 2-18/L-16
5/24/1990 2-08/K-16
5/24/1990 2-08/K-16
8/11/1990 4-26/0-34
8/12/1990 1-35/0-25
8/12/1990 1-29/M-25
8/12/1990 2-26/N-14
8/12/1990 2-26/N-14
8/13/1990 2-52/S-14
8/13/1990 2-52/S-14
8/13/1990 2-46/Q-15
8/13/1990 2-46/Q-15
8/13/1990 1-49/P-21
8/14/1990 4-26/0-34
10/10/1990 3-33/K-37
10/10/1990 3-33/K-37
10/20/1990 3-01/N-29
10/28/1990 3-11/M-30
1991
4/22/1991 1-49/P-21
4/30/1991 2-46/Q-15
4/30/1991 2-46/Q-15
5/12/1991 1-47/Q-21
5/12/1991 1-47/Q-21
5/15/1991 2-26/N-14
5/15/1991 2-26/N-14
5/18/1991 1-09/J-18
5/18/1991 1-09/J-18
5/23/1991 2-08/K-16
5/23/1991 2-18/L-16
5/28/1991 3-1 1 /M-30
6/1/1991 1-45/0-26
6/1/1991 1-45/0-26
0
SDI
3C 3B 3A 2B 2A 1 Z1
14369'1
4147
4029
4976,
14426
4370'
4400
3971
1
3838
4704
41081
14108
MPI/NFB
3C M
3A 2B
2A
I
Z1
i
146171
46601
4725
4660
4684!
4714
4707
3486
3486
4500'1
4500'
4465,
4465
4708'
14761
4339
4339!
4227
422711
1823
1823
4922
49311
4961
4903!
0
SDI
3C 3B 3A 2B 2A 1 Z1
14369'1
4147
4029
4976,
14426
4370'
4400
3971
1
3838
4704
41081
14108
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
6/4/1991 3-47/0-35
6/4/1991 2-62/0-17
6/7/1991 1-55/R-25
6/7/1991 1-55/R-25
6/17/1991 3-33/K-37
6/17/1991 3-33/K-37
6/26/1991 4-08/P-27
7/15/1991 3-25/M-27
7/24/1991 3-25/M-27
9/14/1991 2-14/0-16
9/14/1991 2-14/0-16
10/6/1991 2-62/0-17
10/7/1991 1-49/P-21
10/12/1991 4-08/P-27
10/19/1991 3-33/K-37
10/19/1991 3-33/K-37
11/12/1991 1-47/0-21
11/12/1991 1-47/0-21
11/18/1991 2-08/K-16
11/18/1991 2-08/K-16
11/20/1991 2-18/L-16
1992
1/22/1992 2-46/Q-15
1/22/1992 2-46/0-15
1/29/1992 1-09/J-18
1/29/1992 1-09/J-18
3/27/1992 1-49/P-21
3/31/1992 2-62/Q-17
4/3/1992 4-08/P-27
4/6/1992 1-45/Q-26
4/6/1992 1-45/Q-26
4/10/1992 3-47/0-35
4/10/1992 3-47/0-35
4/10/1992 3-47/Q-35
4/10/1992 3-47/0-35
4/19/1992 2-26/N-14
4/19/1992 2-26/N-14
5/9/1992 3-11/M-30
5/15/1992 3-25/M-27
5/15/1992 3-25/M-27
5/18/1992 3-33/K-37
5/18/1992 3-33/K-37
6/2/1992 4-50/K-41
6/15/1992 2-52/S-14
6/15/1992 2-52/S-14
5
MPI/NFB
3C
36 3A
2B
2A
Z1
4783
4140
4813
4894',
4900
,4724
4803'
4872
147501
4898
14815
:4180
4180
4657
'4725
4657
42451
II
4657
4245
3919
4824'
14796
4869
46081
4890
460811
14821
14821
46081
48741',
46081
4779
3952
47391'
3952
5
SDI
3C i 3B
3A
2B
2A Z1
4157
4140
4140
,4724
147501
14815
47711
1,45621'1
4473''
I
II
4657
11
3919
3919
46081
460811
46081
46081
47391'
4751!
472611
3966
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
7/23/1992 2-14/0-16
7/23/1992 2-14/0-16
7/26/1992 1-29/M-25
7/26/1992 2-181-16
7/27/1992 1-47/Q-21
7/31/1992 4-26/0-34
11/17/1992 2-14/0-16
11/18/1992 2-62/Q-17
11/23/1992 1-45/Q-26
11/23/1992 1-45/0-26
11/24/1992 4-08/P-27
11/26/1992 1-49/P-21
11/28/1992 2-26/N-14
11/28/1992 2-26/N-14
11/30/1992 3-47/0-35
12/4/1992 3-33/K-37
12/4/1992 3-33/K-37
12/5/1992 3-25/M-27
12/5/1992 3-25/M-27
12/5/1992 2-52/S-14
12/5/1992 2-52/S-14
12/19/1992 3-11/M-30
12/30/1992 4-26/0-34
1993
1/7/1993 4-50/K-41
1/7/1993 4-50/K-41
5/3/1993 1-47/0-21
5/3/1993 1-47/Q-21
5/18/1993 2-62/Q-17
5/20/1993 2-26/N-14
5/20/1993 2-26/N-14
5/21/1993 1-49/P-21
5/23/1993 3-47/0-35
7/16/1993 3-25/M-27
7/16/1993 3-25/M-27
7/21/1993 2-18/L-16
7/24/1993 4-26/0-34
7/24/1993 4-26/0-34
8/25/1993 1-09/J-18
8/25/1993 1-09/J-18
9/19/1993 3-25/M-27
9/24/1993 1-35/0-25
11/1/1993 4-50/K-41
11/l/1993 4-50/K-41
11/7/1993 3-11/M-30
6
MPI/NFB
3C
3B
3A
2B
2A
Z1
3033
14846
4470
I
3762
4841
4393
4767
4399,
4693
4087
4542
4639
4879
4671
I
4852
4865
1229
4904
1229
2279
2811
4776
4575
4896
4572
4572
;4335
4065
4065
48621
1513
1513
49191
4713
4780
4390
4691
4638
4621
4643
I
6
SDI
3C
3B
I
3A
2B
2A Z1
3033
4470
I
3762
4393
4399,
4542
4639
4671
I
2484
3700
5172
4904
2279
2811
4575
3359
;4335
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
11/7/1993 3-11/M-30
11/9/1993 2-46/Q-15
11/10/19931 1-45/Q-26
11/24/19931 2-50/U-08
1994
3/17/1994 1-47/0-21
3/19/1994 1-35/0-25
3/22/1994 li 3-03/J-33
3/24/1994 3-47/0-35
4/17/1994 2-58/S-09
4/18/1994 2-62/Q-17
4/20/1994 1 2-181-16
4/25/1994 2-52/S-14
5/16/1994 1-45/0-26
6/7/1994 2-26/N-14
1/7/1995 1-49/P-21
1/1/1995 ! 1-09/J-18
7/14/1994 4-38/K-34
11/20/1994 3-11/M-30
11/30/1994 4-26/0-34
1/6/1995 2-14/0-16
12/23/1994 3-25/M-27
12/9/1994 1 4-50/K-41
1995
1/7/1995 1-49/P-21
1/14/1995 1-45/Q-26
1/17/1995 1-61/Q-20
1/20/1995 3-15/K-33
4/4/1995 2-46/Q-15
4/24/1995 4-18/S-30
5/2/1995 3-05/0-29
5/3/1995 2-52/S-14
5/8/1995 2-58/S-09
7/3/1995 1-09/J-18
10/19/1995 1-19/1-18
10/20/1995 1-33/M-23
12/8/1995 2-181-16
12/16/1995 2-26/N-14
12/28/1995' 4-50/K-41
1996
1/4/1996 3-43/P-36
1/13/1996 1 -01 /J-19
1/23/1996 2-18/L-16
1/26/1996 3-11/M-30
1/27/1996 1-31/M-21
7
MPI/NFB
SDI
r3�C
3B 3A
2B
2A Z1
4549
2A Z1
4435
42111
3801
3905
4283
4628
4736
4608
4555'
24971
3829
4452
4773
2817
4309
4449'
5194
5194
13701
4704
4924
4367
47451
43031
4916
4232
4704
4566111
4603
4930
4930',
4713
4713'
2223
'4498
4348,
114380
40401
1590
1590'
4243'
4184'
4366
7
SDI
3C
3B
3A
2B
2A Z1
4316
3905
4283
4736
4608
3829
4452
2817
4277
5194
5194
430111
4924
47451
4916
3658
4566111
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
1/28/1996 1 2-52/S-14
1/30/1996 4-18/S-30
2/17/1996 2-42/P-13
2/28/1996 j 1-09/J-18
3/3/1996 1-65/N-25
3/7/1996 1-57/R-23
3/10/1996 1-35/0-25
3/28/1996 ! 2-64/U-10
4/1/1996 3-211-34
4/2/1996 3-39/J-39
4/6/1996 1-39/P-17
4/6/1996 2-26/N-14
4/14/1996 2-58/S-09
4/15/1996 1-67/T-20
4/19/1996 3-23/N-32
4/21/1996 3 -09/L -28A
4/21/1996 1 3-15/K-33
5/9/1996 2-50/U-08
7/20/1996 3-371-35
7/20/1996. 4-10/M-28
8/10/1996 4-26/0-34
8/16/1996 3-47/Q-35
9/2/1996 3-35/L-35
9/19/1996 3-33/K-37
10/16/1996! 4-06/0-32
11/11/1996 4-32/K-38
11/25/1996 4-38/K-34
11/16/1996'', 1-21/K-25
12/12/1996 1-63/T-22
12/16/1996 2-16/M-16
1997
1/14/1997 4-34/0-38
2/4/1997 1-09/J-19
2/22/1997 4-50/K-41
3/29/1997 1-17A/1-17
3/31/1997 1 2-58/S-09
4/1/1997 2-52/S-14
4/2/1997 4-18/S-30
4/5/1997 ! 1-09A/L-21
4/5/1997 ! 2-60/U-13
4/14/1997 2-26/N-14
4/15/1997 1-25/N-22
4/16/1997 1 1-17A/1-17
4/16/1997 1 1-57/R-23
4/24/1997 3-49A/M-40
I
SDI
MPI/NFB
3A 2B
3C
3B
3A
2Bi
2A
Z1
4657'1
50191
4788!
4260
50011
4382'
415411
4542
4514
13156
4564
56541
4604
5055'
5179
4524
4656
4983'1
1934
2215
5203
4990
3456!
3996
!
438211
I
4372
14791
4810
4548.
3649
2483
5305
3911
47091
2391!
43351,
38171
I
SDI
3C 3B
3A 2B
2A j1 Z1
49851
1
5097
I �
4657'1
4788!
4260
2428',
4382'
415411
4514
13156
56541
43741 .
4550
5179
4524
3883
4983'1
4652
14964
5203
4990
3996
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
5/4/1997 2-50/U-08
5/4/1997 4-06A/Q-30
5/9/1997 2-42/P-13
5/13/1997 3-39/J-39
6/6/1997 1-03/P-16
6/19/1997 1-25A/K-22
6/28/1997 3-39A/1-37
7/1/1997 2-20/L-15
7/1/1997 2-24/M-12
7/5/1997 1-21/K-25
7/9/1997 1 1-61/Q-20
7/16/1997 3-35/L-36
7/26/1997 3-17B/M-31
7/26/1997 3-49A/M-40
7/30/1997 2-14/0-16
8/5/1997 1-01/J-19
8/5/1997 1-31/M-21
8/7/1997 1-39/P-17
8/7/1997 3-23/N-32
8/23/1997 3-15/K-33
8/28/1997 4-32/K-38
9/24/1997 1-09A/L-21
9/30/1997 2-44/R-12
10/3/1997 4-50/K-41
10/13/1997', 2-18/L-16
10/29/1997 3-17B/M-31
11/14/1997 4-48/K-43
11/15/1997 2-46B/S-13
12/13/1997 3-03/J-33
12/21/1997 3-27/M-33
1998
1/6/1998 1-17A/1-17
2/12/1998 1-25A/K-22
2/13/1998 3-29/J-32
2/20/1998 3-39A/1-37
2/20/1998 4-34/0-38
2/22/1998 3-31/K-32
3/3/1998 1-33/M-23
3/19/1998 1-61/Q-20
3/19/1998 2-08/K-16
3/20/1998 ! 2-18/L-16
3/21/1998 1-03/P-16
3/22/1998 1-09A/L-21
3/22/1998 2-26/N-14
3/31/1998 1 1-39/P-17
MPI/NFB
3C 3B 3A 2B 1 2A Z1
3622
484811
4537
3937
14311
4596
2287
4567
44281
4378
4386
4650
3186
5314 I
4381'
4801
3410,
3070
43241
45771
4240
14190
45561
2797
2739
4661',
9
SDI
3C 3B 3A ! 2B 2A Zi
46591
4526
I
4971
4202'
13595
1346811
4466
44141
43801
5494
i I
47231
4980
i
,36651
4281
14617
4229!,
5143111
4470
ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA
DATE WELL
3/31/1998
1-57/R-23
4/3/1998
3-33/K-37
4/8/1998
3-05/0-29
4/8/1998
4-20/M-35
4/13/1998
4-18/5-30
6/10/1998
2-52/5-14
6/15/1998
3-37/L-35
6/22/1998
2-58/S-09
7/15/1998
1-33/M-23
7/20/1998
1-31/M-21
8/15/1998
4-02/Q-28
8/21/1998
2-60/U-13
8/31/1998
4-38/K-34
9/26/1998
1-01/J-19
9/26/1998
1-47A/M-20
9/26/1998
2-44A/Q-11
9/27/1998
2-20/L-15
9/27/1998
4-32/K-38
10/15/1998
2-30/0-09
10/15/1998
3-07A/L-29
10/20/1998
3-17D/M-31
12/23/1998
1-25A/K-22
MPVNFB
3C
3B
3A
2B 2A
Z7
3209
5166
I i
4294
4798
14288
5118
4856
43131
42661
4573
1447
4290
4175
4180
2962
10
SDI
3C
3B
3A
26
2A
Z1
5166
4798
4437
4856
5375
5387
4180
52251
4088
4583
ILL
4910
6'1010016]
m
0
4000
0
0
0
0
3000
n
m
a
2000
REGION: MPI ZONE: K3C
PRESSURE VS. TIME
■❑ °
❑° ° 00 ° El■
5 S °
❑A El°
13 0
■
L■
7
1000 I I I I i I I I 1 I I I i
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
❑All Wells ■Key Well BP EXPLORATION, ENDICOTT FIELD
■
K
❑:
0:
■
d
❑:
❑
■
❑
0:
❑
L■
7
1000 I I I I i I I I 1 I I I i
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
❑All Wells ■Key Well BP EXPLORATION, ENDICOTT FIELD
REGION: MPI ZONE: K3B
PRESSURE VS. TIME
6000 r ----------
5000 0 . . . .
E❑ 0
P (3 0 0 0. ❑ 0
■■0
❑
13
0
wo 0
b
C) 4000 ■
C) ■
Rk,
3000 1
2000 1 i i i i i i i i i i
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
C3AII Wells m Key Well BP EXPLORATION, ENDICOTT FIELD
6000
mmm
E
n
id
0
0 4600
0
0
0
0
d
4400
U)
d
�K1b7
0
0
REGION: MPI ZONE: K3A
PRESSURE VS. TIME
■ 13 : m
■ ° °'• P g
0 ° ° B ■
� ° ° :■ : : D
4000 ! i i I—
Jan-87 Jan -88 Jan -89 Jan -90 Jan -91
I °All Wells ■Key Well
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
13
op
4000 ! i i I—
Jan-87 Jan -88 Jan -89 Jan -90 Jan -91
I °All Wells ■Key Well
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
m
0
N
N
h
0
0
0
0
is
:o
5000
IHWH1
4600
4400
EP41I41
4000
Jan -87
REGION: MPI ZONE: K2B
PRESSURE VS. TIME
Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93
13All Wells ■Key Well
Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
4800
E
�a
0
4600
H
0
0
0
0
m 4400
Q)
Y)
a
REGION: MPI ZONE: K2A
PRESSURE VS. TIME
4000 4—
Jan-87
Jan -88 Jan -89 Jan -90 Jan -91
❑ All Wells ■ Key Well
13 ❑ ❑
13
013
U
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
REGION: SDI ZONE: K3C
PRESSURE VS. TIME
5000
E
m
0
p 4000
0
0
C
0
Z- IslZ;
rail
2000
1000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91
oAll Wells ■Key Well
a s ° ° E
------•-- - - - - -- - --- ----; - --
�... Q .... ... i
f
I
---- ----- ------ ----- ------ I
I
i
3
i
i
f
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION. ENDICOTT FIELD
REGION: SDI ZONE: K3B
PRESSURE VS. TIME
6000
r ❑ °
5000 ❑
E ■ ❑ '❑
o °13 ❑ d ❑ ■ ❑ ■ ■ !!
w ■ ■ ■
0 4000 ■ ❑ . .. ❑ ❑ 13❑
o °
0
o ❑ .
0
❑ ❑
3000 ■ -
N
❑ e
El o
CL
1000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
❑All Wells 0Key Well I BP EXPLORATION, ENDICOTT FIELD
REGION: SDI ZONE: K3A
PRESSURE VS. TIME
6000 _.
❑ ,❑
5000 ....... ° e
■ ❑ ❑ ° • ❑ ■ ■
o ❑ ❑ ° ■ ■
N
N
D 4000 ..... ■
0
o D Da
0
o ❑
3000 -
m
y
IL
1000 -1 I + I I I I I I I I I ,
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
❑All Wells ■Key Weli BP EXPLORATION, ENDICOTT FIELD
5000
E 4500
m
0
N
Vi
F
0 4000
0
0
co
n- 3500
3000
REGION: SDI ZONE: K2B
PRESSURE VS. TIME
....... ...
°
dF3 ° ■ S
° ;m t
'°
0 ra-o ---- ° Ni°
°' ° --'- -----------9
� op,a:
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
° All Wells ■Key Well BP EXPLORATION, ENDICOTT FIELD
REGION: SDI ZONE: K2A
PRESSURE VS. TIME
5000 _ ..
O .p
3000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
p All Wells ■Key Well
BP EXPLORATION, ENDICOTT FIELD
5000
4000
i
2000
1000
Jan -87
REGION: NFB ZONE: K3C
PRESSURE VS. TIME
Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93
❑All Wells
0Key Well
Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
.m
5000
E
Z3
m
0 4000
F
0
0
0
0
m 3000
a)
m
m
m
a`
1000
REGION: NFB ZONE: K3B
PRESSURE VS. TIME
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
[pAII Wells ■Key Well , BP EXPLORATION, ENDICOTT FIELD
z
ro
y
N
0
0
0
0
0
T
ca
4)
w
a
5500
5000
4500
4000
3500
3000
Jan -87
REGION: NFB ZONE: K3A
PRESSURE VS. TIME
Jan -88 Jan -89 Jan -90 Jan -91
I_ ❑All Wells ■ Key Well
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
5500
5000
ro
o 4500
F
0
0
0
0
r
co 4000
N
7
cn
co
N
'o7
3500
3000
Jan -87
REGION: NFB ZONE: K2B
PRESSURE VS. TIME
Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
13All Wells ■Key Well I BP EXPLORATION, ENDICOTT FIELD
5000
E 4500
m
m
F-
0
0 4000
0
ro
REGION: NFB ZONE: K2A
PRESSURE VS. TIME
a- 3500
Jan -88 Jan -89 Jan -90 Jan -91 Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
F13 All Wells ■Key Well BP EXPLORATION, ENDICOTT FIELD
5000
4500
4000
m
0
w 3500
w
0
0 3000
0
..
co
2500
co
W
W
a`
2000
r
1500
1000
Jan -87 Jan -88 Jan -89 Jan -90 Jan -91
C3All Wells ■KeyWell
ZONE: Ki
PRESSURE VS. TIME
Jan -92 Jan -93 Jan -94 Jan -95 Jan -96 Jan -97 Jan -98 Jan -99
BP EXPLORATION, ENDICOTT FIELD
