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Home My WebLink About2003 Endicott Oil Pool 1 2003 Reservoir Surveillance Report Endicott Oil Pool March 31, 2004 Waterflood Surveillance Program Key Well Pressure Monitoring Program GOC Monitoring Program 1 2003 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 4 Future Waterflood/EOR Plans Page 4 Figure 1: Endicott Field Well Plat (highlighting injectors) Page 5 Table 1: Summary Of Pertinent Data Page 6 Table 2: Reservoir Balance For Waterflood Sands Page 7 Table 3: Injection Well Data Page 8 Figure 2: Waterflood Tracer Plat Page 9 Pressure Monitoring Program: Introduction Page 10 2003 Pressure Monitoring Program Page 10 2004 Pressure Monitoring Program Page 11 Figure 3: Endicott Field Well Plat (highlighting Key Wells) Page 12 Table 4: 2003 Key Well Pressure Monitoring Program Page 13 Table 5: 2003 Key Well Pressure Data Page 14 Table 6: 2004 Key Well Pressure Monitoring Program Page 15 GOC Monitoring Program: Introduction Page 16 2003 Gas-Oil Contact Monitoring Program Page 17 2004 GOC Monitoring Program Page 17 Appendices: 1. Production Rate vs. Time Plots 2. Cumulative Voidage vs. Time Plots 3. Injection Well Rate & Pressure vs. Time Plots 4. Historical Key Well Pressure Data 5. Reservoir Pressure vs. Time 6. Endicott Shut-in well list 2 Endicott Oil Field 2003 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 2003. Project Status Summary Endicott Field production began in October 1987. From field start-up, produced gas has been reinjected back into the existing gas cap to provide pressure support. Water injection was initiated in February 1988, and a tertiary recovery process was initiated with the installation of a miscible injection compressor and commencement of miscible injection in March 1999. This report summarizes the cumulative effects of pressure maintenance since field start-up and details activities in 2003. The Endicott Field is generally described as having three areas. The three areas are fault blocks that are identified as the MPI (Main Production Island area), the SDI (Satellite Drilling Island area), and the NFB (Niakuk Fault Block). Vertically there are six subzones (3C, 3B, 3A, 2B, 2A, 1) that are the general geological subdivisions within the Kekiktuk formation. Initially produced gas was reinjected into the gas cap in the updip portion of MPI subzones 2A and 2B. Gas injection was extended into the MPI subzone 3A gas cap in May 1988, and into the subzone 3C gas cap in both the MPI and the SDI areas in 1993. Reservoir studies subsequently identified the SDI 3C area as a primary EOR target and supported the decision to halt immiscible gas injection in that subzone. As a result, SDI 3C gas injector 1-15/P-25 was shut-in July 1998. In October 2000 well 1-15/P-25 was placed back on production when gas injector 2-06/J-22 was shut in with annular communication. Well 1- 15/P-25 was shut in during July 2001 upon completion of a workover to return 2-06/J-22 to 3 gas injection. Water injection is occurring in peripherally placed injectors in all subzones in all areas of the field with the exception of Zone 1, which is on primary depletion. Endicott’s EOR project began in March of 1999. The original EOR Phase I implementation plan consisted of 8 water-alternating-gas (WAG) injection wells, with two wells being on MI at any given time. This plan was based on an MI compressor design rate of 45 mmscfpd. In reality, the maximum sustainable MI rate achieved by the compressor has been closer to 20 mmscfpd, which can be handled by one well at a time. As of the end of 2003, miscible gas injection has occurred in 5 wells NFB 3A injector 2-22/L-14, SDI 3C injector 4-04/T-26, SDI 3C injector 3-47/Q-35 and SDI 3C injector 1-67/T-20. Produced gas samples have been collected in all of the producers offset from these injection wells to provide a baseline for use in MI breakthrough monitoring. Figure 1 shows a map of the field with well statuses as of December 31, 2003 including the existing water injectors, gas injectors and oil producers. No well service additions or changes have occurred since the last report date. Table 1 summarizes total production, injection, and well count data for the entire pool through December 2003. Table 2 details the reservoir balances by area and subzone through December 2003. The NFB is included in with the MPI on Table 2 for simplicity. Appendix 1 provides graphs of Production and Gas/Oil Ratio versus Time by area and subzone. Appendix 2 provides graphs of Cumulative Voidage versus Time by area and subzone. Appendix 6 lists the wells in the Endicott participating area that were shut in for the entire year of 2003. Injection Well Performance Table 3 provides an overview of the performance of each of the pressure maintenance 4 injectors. Included in this exhibit are the start-up dates and cumulative injection volumes. Appendix 3 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. Future Waterflood/EOR Plans In 2004 there are no plans to trace additional water injectors. Twelve wells will be monitored for tracer. Samples of produced gas will continue to be obtained in the production wells that offset the EOR injection wells to monitor MI movement. Average MI injection rate in 2003 was 16.3 mmscfpd. This annual average rate is higher than 2002 due to repairs and modifications on the MI compressor that improved run time performance. 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 by evaluating new well drilling locations, converting producers to injectors, profile modification of existing injectors, and target injection rate control. Offtake will continue to be optimized by evaluating new well drilling locations, remedial work on existing producers, and production rate control. 5 Figure 1. 2003 Well Status – Endicott Field, Alaska BP Exploration, Alaska Inc . 6 TABLE 1 ENDICOTT OIL POOL SUMMARY OF PERTINENT DATA (as of December 31, 2003) Water Injection Start-up: February 29, 1988 Miscible Gas Injection Start-up: March 24, 1999 Endicott Production since Field Start-Up: Black Oil and Condensate (MMSTB) 419.9 NGL's (MMSTB) 19.4 Gas (BSCF) 1,693.7 Water (MMB) 661.4 Endicott Injection since Field Start-Up: Gas (BSCF) 1,488.8 Miscible Injectant (BSCF) 17.5 Water (MMB) 1,035.9* Wells in Operation: Oil Producers 47 Gas Injectors 4 Water Injectors 20 Water-Alternating-Gas Injectors 2 Waste Water Disposal 1 ** Total 74 * Water injection volumes do not include Cretaceous injection ** Cretaceous injector not shown in Figure 1 7 MPI REGION by SUBZONE Produced Volume 3C 3B 3A 2B 2A 1 MPI TOTAL Oil 24.85 9.62 53.57 72.69 145.88 3.88 310.50 Free Gas 49.35 10.16 99.18 160.69 279.88 5.90 605.14 Water 15.43 6.22 72.91 94.49 102.79 1.22 293.05 Total 89.63 26.00 225.65 327.87 528.55 11.00 1,208.70 Injected Volumes Gas 109.34 12.77 155.26 261.54 329.36 0.00 868.27 MI 3.41 2.47 26.98 23.07 20.10 0.00 76.03 Water 23.42 5.08 84.25 84.96 126.93 0.00 324.64 Total 136.18 20.32 266.49 369.57 476.39 0.00 1,268.94 Net Voidage Volumes Total -46.54 5.68 -40.84 -41.70 52.16 11.00 -60.25 SDI REGION by SUBZONE Produced Volume 3C 3B 3A 2B 2A 1 SDI TOTAL Oil 52.78 13.97 35.44 91.08 39.63 0.04 232.94 Free Gas 93.02 15.65 7.97 45.83 53.14 0.09 215.68 Water 62.03 14.30 47.77 132.18 47.57 0.02 303.87 Total 207.83 43.92 91.18 269.08 140.33 0.15 752.49 Injected Volumes Gas 66.00 2.95 0.00 0.00 0.00 0.00 68.95 MI 4.39 0.00 0.00 0.00 0.00 0.00 4.39 Water 96.95 39.69 62.45 245.56 84.97 0.00 529.62 Total 167.34 42.64 62.45 245.56 84.97 0.00 602.95 Net Voidage Volumes Total 40.50 1.28 28.73 23.53 55.36 0.15 149.54 FIELD TOTALS by SUBZONE 3C 3B 3A 2B 2A 1 FIELD TOTAL Produced Volume Oil 77.64 23.59 89.01 163.77 185.51 3.92 543.44 Free Gas 142.37 25.81 107.14 206.52 333.01 5.99 820.83 Water 77.46 20.52 120.68 226.67 150.35 1.24 596.92 Total 297.47 69.92 316.83 596.95 668.88 11.14 1,961.19 Injected Volumes Gas 175.34 15.72 155.26 261.54 329.36 0.00 937.21 MI 7.80 2.47 26.98 23.07 20.10 0.00 80.42 Water 120.38 44.77 146.70 330.52 211.90 0.00 854.26 Total 303.51 62.96 328.94 615.13 561.36 0.00 1,871.90 Net Voidage Volumes Total -6.05 6.96 -12.11 -18.17 107.52 11.14 89.29 NOTE: Water injection volumes do not include Cretaceous injection TABLE 2 ENDICOTT OIL POOL RESERVOIR BALANCE FOR WATERFLOOD SANDS Through12/31/2002 (Values in MMRB) 8 MPI Reservoir Area Cumulative Cumulative Cumulative Water Gas MI Start-Up Well Name MMBW BSCFG BSCFG Date 1-05/O-20 365.72 May-88 1-23/O-15 56.70 Mar-95 1-37/P-24 25.80 Dec-87 1-41/O-23 43.00 Dec-95 2-06/J-22 451.49 Oct-87 2-12/Q-16 183.96 Apr-93 2-16/M-16 68.35 Mar-89 2-22/L-14 49.06 3.29 May-89 2-24/M-12 4.76 Mar-95 2-34/P-14 63.55 Nov-89 *2-44/R-12 20.77 Mar-89 2-54/Q-12 63.84 Jan-92 2-64/U-10 5.02 Dec-90 2-70/U-15 19.31 Jul-89 5-01/SD-07 393.04 Oct-87 5-02/SD-10 54.22 Jan-88 SDI Reservoir Area Cumulative Cumulative Cumulative Water Gas MI Start-Up Well Name MMBW BSCFG BSCFG Date 1-15/P-25 100.90 Jun-93 1-43/P-26 122.62 Apr-89 1-51/V-20 10.89 Apr-93 1-67/T-20 14.57 2.06 May-99 1-69/V-19 16.79 Dec-90 **3-07/N-28 47.61 Apr-89 3-37/L-35 25.11 Aug-98 3-41/K-39 109.23 Apr-89 3-45/M-39 50.03 Sep-88 3-47/Q-35 15.73 4.32 Mar-95 3-49A/M-40 9.76 Apr-99 + 4-02/Q-28 8.48 May-88 4-04/T-26 33.52 7.85 Mar-90 4-08/P-27 39.97 May-93 4-14/R-34 38.10 Oct-89 4-40/P-43 7.09 Oct-92 ++ 4-48/K-43 11.85 Dec-90 Total 1036 1495 18 Table 3 Endicott Oil Pool Injection Well Data Through 12/31/2003 9 10 Endicott Oil Field 2003 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. Sixteen 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 sixteen 2003 Key Well reservoir pressures. 2003 Pressure Monitoring Program Table 4 summarizes the wells included in the proposed 2003 Key Well Program. The 2003 program consisted of sixteen key wells. Table 5 summarizes the key well pressure data gathered in 2003. Several changes to the proposed plan occurred due to operational and production rate concerns. The Niakuk 2A/2B pressure was proposal for well 1-01/J-19, however due to mechanical reasons it was not possible to gather data in this well. A Niakuk K2B pressure was observed in well 1-19/L-24 as an alternative. In the MPI K2A a pressure in well 2-28B/O-19 was gathered rather than the proposed well 1-33B/K-22 due to confirmed communication from the 2B and 3A intervals. The Niakuk 3A pressure was observed in well 2-08/K-16 rather than the proposed well 2-18/L-16. In addition no pressure was obtained in the SDI 3B interval: historical data indicates that its reservoir 11 pressure is similar to the SDI 3C interval. Appendix 4 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 5 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. 2004 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. Changes in well service and configuration occasionally necessitate changes to the pressure monitoring program in order to obtain representative data. As in previous years BPX plans to combine the MPI 3B and MPI 3C into a single pressure monitoring region. Only one well is completed in only the MPI 3B interval and historic pressure data indicated reservoir pressures in the two intervals share a similar performance. Table 6 summarizes the 2004 Endicott key well pressure monitoring program proposal consisting of 16 wells. As in past years, the amount of static pressure data obtained annually will likely exceed the sixteen wells included in the proposed 2004 Key Well Pressure Monitoring Program. At the operator’s discretion, representative reservoir pressures gathered in other wells during 2004 may 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. 12 Figure 3. 2003 Key Well Reservoir Pressure Data – Endicott, Alaska 44665544 44338822 44553322 22555533 55007722 33005544 44772299 44553344 44112277 22663322 44775577 44447766 44331199 44337711 44996600 44009988 44008844 44337711 13 Well Area Subzone(s)Comments 1-25A/K-22 MPI Z1 1-01/J-19 Niakuk 2A/2B Commingled pressure 2-18/L-16 Niakuk 3A 2-26/N-14 Niakuk 3B/3C Commingled pressure 1-33B/L-24 MPI 2A 1-03/P-16 MPI 2B Single zone high angle well 1-39/P-17 MPI 3A Lower 3A monitor point 2-52/S-14 MPI 3B/3C Commingled pressure 2-58/S-09 MPI 3C 3-39A/I-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 2003 KEY WELL PRESSURE MONITORING PROGRAM PROPOSAL ENDICOTT FIELD TABLE 4 14 Well Area Subzone(s)Pressures 1-25A/K-22 MPI Z1 2553 psia 1-19/I-18*Niakuk 2B 4382 psia 2-18/L-16 Niakuk 3A 4127 psia 2-26/N-14 Niakuk 3B/3C 4532 psia 2-28B/O-19*MPI 2A 4281 psia 1-03/P-16 MPI 2B 4534 psia 1-39/P-17 MPI 3A 4729 psia 2-52/S-14 MPI 3B/3C 5072 psia 2-58/S-09 MPI 3C 3054 psia 3-39A/I-37 SDI 2A 4319 psia 3-33/K-37 SDI 2B 4476 psia 3-35/L-36 SDI 3A 4960 psia 4-32/K-38 SDI 3A 4371 psia 4-18/S-30 SDI 3C 4098 psia 1-57/R-23 SDI 3C 4084 psia DATUM: 10000' TVDss * Substituted well other than originally proposed due mechanical or production constraints 2003 KEY WELL PRESURE MONITORING PROGRAM DATA ENDICOTT OIL FIELD TABLE 5 L No available substitute for well 3-23/N-32 to measure SDI 3B pressure. Historical pressure data indicates SDI 3B and SDI 3C pressures are equivalent. 15 Well Area Subzone(s)Comments 1-25A/K-22 MPI Z1 1-01/J-19 Niakuk 2A/2B Commingled pressure 2-18/L-16 Niakuk 3A 2-26/N-14 Niakuk 3B/3C Commingled pressure 3-25B/L-27 MPI 2A 1-03/P-16 MPI 2B Single zone high angle well 1-39/P-17 MPI 3A Lower 3A monitor point 2-52/S-14 MPI 3B/3C Commingled pressure 2-58/S-09 MPI 3C 3-39A/I-37 SDI 2A 3-31/K-32 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 1-55/R-25 SDI 3C Western area Change from the 2003 proposed program: 3-25B/L-27 as key well for MPI 2A 3-31/K-32 as key well for SDI 2B 1-55/R-25 as key well for SDI 2B 2004 KEY WELL PRESSURE MONITORING PROGRAM PROPOSAL ENDICOTT FIELD TABLE 6 16 Endicott Oil Field 2003 GOC Monitoring Program Introduction A Gas - Oil Contact (GOC) 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 initial GOC Monitoring Key Well Program consisted of six wells: 1-01/J-19, 1-09/J-18, 1-27/P-20, 1-29/M-25, 2-04/M-19, 3-01/N-29. Table 7 details the history of pulsed neutron log observations in the six GOC key wells. The table identifies GOC movement and gas influx by under-running major shales within Subzones 3A and 2B. Conservation Order No. 462, rule 9 (b) revoked the Key Well Monitoring Program and allowed the operator to submit modifications to the Gas Oil Monitoring Program for Commission approval. The details of the 2003 GOC Monitoring Program as submitted by the operator are listed in the section below. The GOC monitoring program for Endicott is based on the understanding of a limited ability to monitor field-wide 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. The more massive high quality sands of the 3A and 2B subzones are where more regional GOC effects are more easily noted. Monitoring region gas movement in the 2A subzone is 17 more tenuous due to the close proximity to gas and likelihood of localized gas coning and under runs. Monitoring gas movement in the 3B, and 3C subzones is not practical due to complex stratigraphy (shaliness). 2003 GOC Monitoring Program During 2003, a total of 5 cased - hole pulsed and compensated neutron logs (PNL / CNL) were acquired. 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 2003: Well Location Well Location 1-57/R-23 SDI 3-25B/L-27 MPI 2-18/L-16 Niakuk 4-10A/L-28 MPI 2-28B/O-19 MPI 5 Wells Total The 2003 GOC monitoring program focused on the understanding the location of gas in the 3A subzones in the Niakuk fault block (1-57/R-23), the 2A/2B/3A in the MPI fault block 2- 28B/O-19, 3-25B/L-27, 4-10A/L-28) and 3A in the SDI fault block (1-57/R-23). . 2004 GOC Monitoring Program BPX proposes a 2004 GOC Monitoring Program that consists of a notional five well program focusing on the 2A and 2B intervals and to a lesser extent the 3B and 3C intervals. Gas movement in these intervals is the most active. The 2A and 2B intervals have the highest potential for monitoring depletion and improving recovery through effective reservoir management and the identification of potential infill drill locations. Production logging and down-hole mechanical isolation of gas prone intervals also provide a means to monitor gas influx. Together, these tools constitute an effective means to monitor gas movement at Endicott Appendix 1 Production Rate vs. Time Plots BP ALASKA - ENDICOTT Endicott - Flow Unit Fi Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT MPI Region - Zone 1 Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT MPI Region - Zone 2A Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT MPI Region - Zone 2B Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT MPI Region - Zone 3A Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT MPI Region - Zone 3B Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT MPI Region - Zone 3C Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT Niakuk Region - Zone 2A Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT Niakuk Region - Zone 2B Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT Niakuk Region - Zone 3A Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT Niakuk Region - Zone 3B Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT Niakuk Region - Zone 3C Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT SDI Region - Zone 2A Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT SDI Region - Zone 2B Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT SDI Region - Zone 3A Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT SDI Region - Zone 3B Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time BP ALASKA - ENDICOTT SDI Region - Zone 3C Production (Oil Rate, GOR, WC) 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 031x101 1x102 1x103 1x104 1x105 (L1)1x106 1x100 1x101 1x102 1x103 1x104 (R1)1x105 (L1) Cal Day Oil (bbl/d)(L1) GOR (R1) WC pct VS Time Appendix 2 Cumulative Voidage and Reservoir Pressure vs. Time Plots MPI Region - Zone 1 CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -18 -16 -14 -12 -8 -6 -4 -2 -20 -10 0(L1) CumVoidage (mmrvb)VS Time MPI Region - Zone 2A CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -26 -22 -18 -14 -6 -2 2 6 -30 -10 10(L1) CumVoidage (mmrvb)VS Time MPI Region - Zone 2B CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -70 -40 -10 20 80 110 140 170 -100 50 200(L1) CumVoidage (mmrvb)VS Time MPI Region - Zone 3A CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -7 -4 -1 2 8 11 14 17 -10 5 20(L1) CumVoidage (mmrvb)VS Time MPI Region - Zone 3B CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -18 -16 -14 -12 -8 -6 -4 -2 -20 -10 0(L1) CumVoidage (mmrvb)VS Time MPI Region - Zone 3C CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -3 4 11 18 32 39 46 53 -10 25 60(L1) CumVoidage (mmrvb)VS Time Niakuk Region - Zone 2A CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -36 -32 -28 -24 -16 -12 -8 -4 -40 -20 0(L1) CumVoidage (mmrvb)VS Time Niakuk Region - Zone 2B CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -26 -22 -18 -14 -6 -2 2 6 -30 -10 10(L1) CumVoidage (mmrvb)VS Time Niakuk Region - Zone 3A CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -54 -48 -42 -36 -24 -18 -12 -6 -60 -30 0(L1) CumVoidage (mmrvb)VS Time Niakuk Region - Zone 3B CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -4 -3 -3 -2 -1 -1 0 1 -4 -2 1(L1) CumVoidage (mmrvb)VS Time Niakuk Region - Zone 3C CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -5 -4 -4 -3 -2 -2 -1 -1 -5 -3 0(L1) CumVoidage (mmrvb)VS Time SDI Region - Zone 2A CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -72 -64 -56 -48 -32 -24 -16 -8 -80 -40 0(L1) CumVoidage (mmrvb)VS Time SDI Region - Zone 2B CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -36 -32 -28 -24 -16 -12 -8 -4 -40 -20 0(L1) CumVoidage (mmrvb)VS Time SDI Region - Zone 3A CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -35 -30 -25 -20 -10 -5 0 5 -40 -15 10(L1) CumVoidage (mmrvb)VS Time SDI Region - Zone 3B CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -17 -14 -11 -8 -2 1 4 7 -20 -5 10(L1) CumVoidage (mmrvb)VS Time SDI Region - Zone 3C CUMULATIVE VOIDAGE (injection - production) 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 -62 -54 -46 -38 -22 -14 -6 2 -70 -30 10(L1) CumVoidage (mmrvb)VS Time Appendix 3 Injection Well Rate and Pressure vs. Time Plots BP ALASKA - ENDICOTT 1-11/SN-04 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-23/O-15 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-37/P-24 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-41/O-23 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-43/P-26 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-51/V-20 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-67/T-20 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-69/V-19 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-16/M-16 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-22/L-14 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-24/M-12 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-34/P-14 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-44/R-12 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-54/Q-12 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-64/U-10 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 2-70/U-15 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 5-02/SD-10 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 3-07/N-28 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 3-37/L-35 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 3-41/K-39 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 3-45/M-39 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 3-47/Q-35 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 3-49A/M-40 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 4-02/Q-28 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 4-04/T-26 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 4-08/P-27 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 4-14/R-34 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 4-40/P-43 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 4-48/K-43 Daily Water and MI Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 10000 20000 30000 40000 50000 60000(L1) 0 500 1000 1500 2000 2500 3000(R1) (L1) Daily Water Inj (bbls)(L1) Daily Mi Inj (mscf)(R1) Daily WHIP (psia) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 31 63 94 125(L1) (L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (bbl/psi)(L1) Injectivity Index (scf/psi) VS Time BP ALASKA - ENDICOTT 1-05/O-20 Daily Gas Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 16 32 48 64 80 96 112 128 144 160(L1) 0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000(R1) (R1) Daily WHIP (psia)(L1) Daily Gas Inj (mmscf/d) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 8000 16000 24000 32000 40000(L1) Injectivity Index (scf/psi)VS Time BP ALASKA - ENDICOTT 1-15/P-25 Daily Gas Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 16 32 48 64 80 96 112 128 144 160(L1) 0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000(R1) (R1) Daily WHIP (psia)(L1) Daily Gas Inj (mmscf/d) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 6000 12000 18000 24000 30000(L1) Injectivity Index (scf/psi)VS Time BP ALASKA - ENDICOTT 2-06/J-22 Daily Gas Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 16 32 48 64 80 96 112 128 144 160(L1) 0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000(R1) (R1) Daily WHIP (psia)(L1) Daily Gas Inj (mmscf/d) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 8000 16000 24000 32000 40000(L1) Injectivity Index (scf/psi)VS Time BP ALASKA - ENDICOTT 2-12/Q-16 Daily Gas Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 16 32 48 64 80 96 112 128 144 160(L1) 0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000(R1) (R1) Daily WHIP (psia)(L1) Daily Gas Inj (mmscf/d) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 6000 12000 18000 24000 30000(L1) Injectivity Index (scf/psi)VS Time BP ALASKA - ENDICOTT 5-01/SD-07 Daily Gas Injection 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 16 32 48 64 80 96 112 128 144 160(L1) 0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000(R1) (R1) Daily WHIP (psia)(L1) Daily Gas Inj (mmscf/d) VS Time 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 030 8000 16000 24000 32000 40000(L1) Injectivity Index (scf/psi)VS Time Appendix 4 Historical Key Well Pressure Data ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 1987 9/5/1987 1-47/Q-21 4897 9/5/1987 1-47/Q-21 4897 10/1/1987 1-09/J-18 4889 10/1/1987 1-09/J-18 4889 11/10/1987 3-01/N-29 4839 11/22/1987 1-09/J-18 4813 12/5/1987 3-01/N-29 4696 12/12/1987 1-47/Q-21 4631 12/12/1987 1-47/Q-21 4631 1988 1/19/1988 1-35/O-25 4809 1/27/1988 2-52/S-14 4784 1/27/1988 2-52/S-14 4784 1/28/1988 1-29/M-25 4767 2/2/1988 1-09/J-18 4788 2/3/1988 2-62/Q-17 4736 2/15/1988 2-08/K-16 4800 2/15/1988 2-08/K-16 4750 2/15/1988 2-08/K-16 4789 2/28/1988 3-47/Q-35 4600 3/1/1988 3-33/K-37 4466 3/1/1988 3-33/K-37 4569 3/27/1988 3-01/N-29 4514 3/30/1988 3-35/L-36 4551 4/22/1988 1-35/O-25 4758 5/25/1988 3-05/O-29 4460 6/5/1988 1-55/R-25 4800 6/5/1988 1-55/R-25 4800 6/9/1988 1-29/M-25 4726 6/10/1988 1-35/O-25 4742 6/11/1988 3-01/N-29 4497 6/11/1988 2-62/Q-17 4671 6/16/1988 2-26/N-14 4820 6/16/1988 2-26/N-14 4820 6/21/1988 3-01/N-29 4494 6/29/1988 2-26/N-14 4838 6/29/1988 2-26/N-14 4838 7/23/1988 3-05/O-29 4497 7/27/1988 2-26/N-14 3718 7/27/1988 2-26/N-14 3718 7/30/1988 4-26/O-34 4600 7/30/1988 4-26/O-34 4590 7/30/1988 4-26/O-34 4528 7/30/1988 4-26/O-34 4850 7/30/1988 4-26/O-34 4400 9/4/1988 3-11/M-30 4469 1 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 9/4/1988 3-11/M-30 4576 9/4/1988 3-11/M-30 4525 9/4/1988 3-11/M-30 4563 9/4/1988 3-11/M-30 4436 9/18/1988 4-26/O-34 4411 10/7/1988 3-11/M-30 4504 10/8/1988 2-26/N-14 3320 10/8/1988 2-26/N-14 3320 10/10/1988 1-09/J-18 4628 10/11/1988 3-05/O-29 4590 10/13/1988 2-14/O-16 4678 10/20/1988 2-08/K-16 4532 10/20/1988 3-47/Q-35 4359 10/21/1988 1-29/M-25 4644 10/22/1988 1-35/O-25 4721 10/23/1988 3-01/N-29 4524 11/17/1988 1-35/O-25 4700 11/25/1988 1-09/J-18 4615 11/25/1988 1-09/J-18 4622 12/4/1988 3-11/M-30 4490 12/13/1988 1-49/P-21 4563 12/13/1988 2-08/K-16 4491 1989 1/5/1989 2-26/N-14 2800 1/5/1989 2-26/N-14 2800 1/15/1989 3-35/L-36 4993 2/2/1989 2-26/N-14 2894 2/2/1989 2-26/N-14 2894 2/21/1989 4-26/O-34 3909 3/19/1989 1-29/M-25 4635 3/20/1989 2-46/Q-15 4450 3/20/1989 2-46/Q-15 4732 3/20/1989 2-46/Q-15 4509 3/20/1989 2-46/Q-15 4731 3/25/1989 1-35/O-25 4631 3/29/1989 3-47/Q-35 4278 4/3/1989 3-33/K-37 4405 4/18/1989 4-26/O-34 4019 4/27/1989 2-26/N-14 3287 4/27/1989 2-26/N-14 3287 5/7/1989 1-49/P-21 4440 5/11/1989 2-14/O-16 4623 5/11/1989 2-14/O-16 4614 6/6/1989 1-09/J-18 4634 6/6/1989 1-09/J-18 4640 6/21/1989 2-08/K-16 4600 6/21/1989 2-08/K-16 4600 2 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 6/21/1989 2-46/Q-15 4420 6/21/1989 2-46/Q-15 4420 8/3/1989 2-52/S-14 4456 8/3/1989 1-47/Q-21 4410 8/3/1989 2-52/S-14 4456 8/3/1989 1-47/Q-21 4410 8/4/1989 2-46/Q-15 4427 8/4/1989 2-46/Q-15 4427 8/15/1989 3-47/Q-35 4317 8/19/1989 3-05/O-29 4332 8/21/1989 3-01/N-29 4421 9/12/1989 4-50/K-41 4780 9/12/1989 4-50/K-41 4280 9/23/1989 4-26/O-34 4000 9/23/1989 4-26/O-34 4143 9/24/1989 1-35/O-25 4570 9/25/1989 2-62/Q-17 4600 10/29/1989 3-11/M-30 4440 11/25/1989 2-52/S-14 4505 11/25/1989 2-52/S-14 4505 11/27/1989 3-05/O-29 4417 12/22/1989 2-46/Q-15 4456 12/22/1989 2-46/Q-15 4456 12/30/1989 3-33/K-37 4437 12/30/1989 3-33/K-37 4432 1990 1/3/1990 1-45/Q-26 4411 2/7/1990 2-26/N-14 4006 2/7/1990 2-26/N-14 4006 2/25/1990 3-05/O-29 4506 2/26/1990 2-62/Q-17 4642 2/26/1990 1-47/Q-21 4453 2/26/1990 1-47/Q-21 4453 2/28/1990 1-35/O-25 4611 3/1/1990 1-49/P-21 4557 3/17/1990 2-14/O-16 4606 3/17/1990 2-14/O-16 4628 3/19/1990 1-09/J-18 4667 3/19/1990 1-09/J-18 4639 3/22/1990 1-55/R-25 4322 3/22/1990 1-55/R-25 4322 4/5/1990 1-55/R-25 4369 4/5/1990 1-55/R-25 4369 4/9/1990 4-26/O-34 4147 4/9/1990 4-26/O-34 4029 4/29/1990 4-50/K-41 4976 4/29/1990 4-50/K-41 4426 3 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 5/1/1990 1-45/Q-26 4370 5/1/1990 1-45/Q-26 4400 5/2/1990 2-18/L-16 4617 5/2/1990 2-18/L-16 4660 5/2/1990 2-18/L-16 4725 5/24/1990 2-08/K-16 4660 5/24/1990 2-08/K-16 4684 8/11/1990 4-26/O-34 3971 8/12/1990 1-35/O-25 4714 8/12/1990 1-29/M-25 4707 8/12/1990 2-26/N-14 3486 8/12/1990 2-26/N-14 3486 8/13/1990 2-52/S-14 4500 8/13/1990 2-52/S-14 4500 8/13/1990 2-46/Q-15 4465 8/13/1990 2-46/Q-15 4465 8/13/1990 1-49/P-21 4708 8/14/1990 4-26/O-34 3838 10/10/1990 3-33/K-37 4414 10/10/1990 3-33/K-37 4357 10/20/1990 3-01/N-29 4427 10/28/1990 3-11/M-30 4376 1991 4/22/1991 1-49/P-21 4761 4/30/1991 2-46/Q-15 4339 4/30/1991 2-46/Q-15 4339 5/12/1991 1-47/Q-21 4227 5/12/1991 1-47/Q-21 4227 5/15/1991 2-26/N-14 1823 5/15/1991 2-26/N-14 1823 5/18/1991 1-09/J-18 4922 5/18/1991 1-09/J-18 4931 5/23/1991 2-08/K-16 4961 5/23/1991 2-18/L-16 4903 5/28/1991 3-11/M-30 4704 6/1/1991 1-45/Q-26 4108 6/1/1991 1-45/Q-26 4108 6/4/1991 3-47/Q-35 4157 6/4/1991 2-62/Q-17 4783 6/7/1991 1-55/R-25 4140 6/7/1991 1-55/R-25 4140 6/17/1991 3-33/K-37 4724 6/17/1991 3-33/K-37 4750 6/26/1991 4-08/P-27 4815 7/15/1991 3-25/M-27 4813 7/24/1991 3-25/M-27 4894 9/14/1991 2-14/O-16 4900 4 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 9/14/1991 2-14/O-16 4803 10/6/1991 2-62/Q-17 4872 10/7/1991 1-49/P-21 4898 10/12/1991 4-08/P-27 4771 10/19/1991 3-33/K-37 4562 10/19/1991 3-33/K-37 4473 11/12/1991 1-47/Q-21 4180 11/12/1991 1-47/Q-21 4180 11/18/1991 2-08/K-16 4657 11/18/1991 2-08/K-16 4725 11/20/1991 2-18/L-16 4657 1992 1/22/1992 2-46/Q-15 4245 1/22/1992 2-46/Q-15 4245 1/29/1992 1-09/J-18 4824 1/29/1992 1-09/J-18 4796 3/27/1992 1-49/P-21 4869 3/31/1992 2-62/Q-17 4890 4/3/1992 4-08/P-27 4657 4/6/1992 1-45/Q-26 3919 4/6/1992 1-45/Q-26 3919 4/10/1992 3-47/Q-35 4608 4/10/1992 3-47/Q-35 4608 4/10/1992 3-47/Q-35 4608 4/10/1992 3-47/Q-35 4608 4/19/1992 2-26/N-14 1482 4/19/1992 2-26/N-14 1482 5/9/1992 3-11/M-30 4739 5/15/1992 3-25/M-27 4874 5/15/1992 3-25/M-27 4779 5/18/1992 3-33/K-37 4751 5/18/1992 3-33/K-37 4726 6/2/1992 4-50/K-41 3966 6/15/1992 2-52/S-14 3952 6/15/1992 2-52/S-14 3952 7/23/1992 2-14/O-16 4846 7/23/1992 2-14/O-16 4841 7/26/1992 1-29/M-25 4767 7/26/1992 2-18/L-16 4693 7/27/1992 1-47/Q-21 4087 7/31/1992 4-26/O-34 3033 11/17/1992 2-14/O-16 4879 11/18/1992 2-62/Q-17 4852 11/23/1992 1-45/Q-26 4470 11/23/1992 1-45/Q-26 3762 11/24/1992 4-08/P-27 4393 11/26/1992 1-49/P-21 4865 5 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 11/28/1992 2-26/N-14 1229 11/28/1992 2-26/N-14 1229 11/30/1992 3-47/Q-35 4399 12/4/1992 3-33/K-37 4542 12/4/1992 3-33/K-37 4639 12/5/1992 3-25/M-27 4776 12/5/1992 3-25/M-27 4896 12/5/1992 2-52/S-14 4572 12/5/1992 2-52/S-14 4572 12/19/1992 3-11/M-30 4671 12/30/1992 4-26/O-34 2484 1993 1/7/1993 4-50/K-41 3700 1/7/1993 4-50/K-41 5172 5/3/1993 1-47/Q-21 4065 5/3/1993 1-47/Q-21 4065 5/18/1993 2-62/Q-17 4862 5/20/1993 2-26/N-14 1513 5/20/1993 2-26/N-14 1513 5/21/1993 1-49/P-21 4919 5/23/1993 3-47/Q-35 4904 7/16/1993 3-25/M-27 4713 7/16/1993 3-25/M-27 4780 7/21/1993 2-18/L-16 4390 7/24/1993 4-26/O-34 2279 7/24/1993 4-26/O-34 2811 8/25/1993 1-09/J-18 4691 8/25/1993 1-09/J-18 4638 9/19/1993 3-25/M-27 4621 9/24/1993 1-35/O-25 4643 11/1/1993 4-50/K-41 4575 11/1/1993 4-50/K-41 3359 11/7/1993 3-11/M-30 4335 11/7/1993 3-11/M-30 4316 11/9/1993 2-46/Q-15 4549 11/10/1993 1-45/Q-26 4435 4211 11/24/1993 2-50/U-08 3801 1994 3/17/1994 1-47/Q-21 4628 3/19/1994 1-35/O-25 4555 3/22/1994 3-03/J-33 3905 3/24/1994 3-47/Q-35 4283 4/17/1994 2-58/S-09 2497 4/18/1994 2-62/Q-17 4773 4/20/1994 2-18/L-16 4309 4/25/1994 2-52/S-14 4449 4736 4608 5/16/1994 1-45/Q-26 6 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 6/7/1994 2-26/N-14 1370 1/7/1995 1-49/P-21 4704 1/1/1995 1-09/J-18 4367 7/14/1994 4-38/K-34 3829 11/20/1994 3-11/M-30 4452 11/30/1994 4-26/O-34 2817 1/6/1995 2-14/O-16 4303 12/23/1994 3-25/M-27 4232 12/9/1994 4-50/K-41 4277 1995 1/7/1995 1-49/P-21 4704 1/14/1995 1-45/Q-26 5194 5194 1/17/1995 1-61/Q-20 4603 1/20/1995 3-15/K-33 4301 4/4/1995 2-46/Q-15 4930 4930 4/24/1995 4-18/S-30 4924 5/2/1995 3-05/O-29 4745 5/3/1995 2-52/S-14 4713 4713 5/8/1995 2-58/S-09 2223 7/3/1995 1-09/J-18 4498 10/19/1995 1-19/I-18 4348 10/20/1995 1-33/M-23 4380 12/8/1995 2-18/L-16 4040 12/16/1995 2-26/N-14 1590 1590 12/28/1995 4-50/K-41 4916 1996 1/4/1996 3-43/P-36 3658 1/13/1996 1-01/J-19 4243 1/23/1996 2-18/L-16 4184 1/26/1996 3-11/M-30 4566 1/27/1996 1-31/M-21 4366 1/28/1996 2-52/S-14 5019 1/30/1996 4-18/S-30 4985 2/17/1996 2-42/P-13 5001 2/28/1996 1-09/J-18 4542 3/3/1996 1-65/N-25 4564 3/7/1996 1-57/R-23 5097 3/10/1996 1-35/O-25 4604 3/28/1996 2-64/U-10 5055 4/1/1996 3-21/L-34 4657 4/2/1996 3-39/J-39 4788 4/6/1996 1-39/P-17 4656 4/6/1996 2-26/N-14 1934 4/14/1996 2-58/S-09 2215 4/15/1996 1-67/T-20 4260 4/19/1996 3-23/N-32 2428 7 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 4/21/1996 3-09/L-28A 4382 4/21/1996 3-15/K-33 4154 5/9/1996 2-50/U-08 3456 7/20/1996 3-37/L-35 4514 7/20/1996 4-10/M-28 4382 8/10/1996 4-26/O-34 3156 8/16/1996 3-47/Q-35 5654 9/2/1996 3-35/L-35 4374 9/19/1996 3-33/K-37 4550 10/16/1996 4-06/Q-32 5179 11/11/1996 4-32/K-38 4524 11/25/1996 4-38/K-34 3883 11/16/1996 1-21/K-25 4372 12/12/1996 1-63/T-22 4983 12/16/1996 2-16/M-16 4791 4810 1997 1/14/1997 4-34/O-38 4652 2/4/1997 1-09/J-19 4548 2/22/1997 4-50/K-41 4964 3/29/1997 1-17A/I-17 3649 3/31/1997 2-58/S-09 2483 4/1/1997 2-52/S-14 5305 4/2/1997 4-18/S-30 5203 4/5/1997 1-09A/L-21 3911 4/5/1997 2-60/U-13 4709 4/14/1997 2-26/N-14 2391 4/15/1997 1-25/N-22 4335 4/16/1997 1-17A/I-17 3817 4/16/1997 1-57/R-23 4990 4/24/1997 3-49A/M-40 3996 5/4/1997 2-50/U-08 3622 5/4/1997 4-06A/Q-30 4659 5/9/1997 2-42/P-13 4848 5/13/1997 3-39/J-39 4526 6/6/1997 1-03/P-16 4537 6/19/1997 1-25A/K-22 3937 6/28/1997 3-39A/I-37 3468 7/1/1997 2-20/L-15 1431 7/1/1997 2-24/M-12 4596 7/5/1997 1-21/K-25 2287 7/9/1997 1-61/Q-20 4567 7/16/1997 3-35/L-36 4971 7/26/1997 3-17B/M-31 4202 7/26/1997 3-49A/M-40 3595 7/30/1997 2-14/O-16 4428 8/5/1997 1-01/J-19 4378 8/5/1997 1-31/M-21 4386 8/7/1997 1-39/P-17 4650 8/7/1997 3-23/N-32 4466 8/23/1997 3-15/K-33 4414 8/28/1997 4-32/K-38 4380 9/24/1997 1-09A/L-21 3186 9/30/1997 2-44/R-12 5314 10/3/1997 4-50/K-41 5494 8 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 10/13/1997 2-18/L-16 4381 10/29/1997 3-17B/M-31 4723 11/14/1997 4-48/K-43 4980 11/15/1997 2-46B/S-13 4801 12/13/1997 3-03/J-33 3665 12/21/1997 3-27/M-33 4281 1998 1/6/1998 1-17A/I-17 3410 2/12/1998 1-25A/K-22 3070 2/13/1998 3-29/J-32 4617 2/20/1998 3-39A/I-37 4229 2/20/1998 4-34/O-38 5143 2/22/1998 3-31/K-32 4470 3/3/1998 1-33/M-23 4324 3/19/1998 1-61/Q-20 4577 3/19/1998 2-08/K-16 4240 3/20/1998 2-18/L-16 4190 3/21/1998 1-03/P-16 4556 3/22/1998 1-09A/L-21 2797 3/22/1998 2-26/N-14 2739 3/31/1998 1-39/P-17 4661 3/31/1998 1-57/R-23 5166 4/3/1998 3-33/K-37 4798 4/8/1998 3-05/O-29 4437 4/8/1998 4-20/M-35 4856 4/13/1998 4-18/S-30 5375 6/10/1998 2-52/S-14 5387 6/15/1998 3-37/L-35 4180 6/22/1998 2-58/S-09 3209 7/15/1998 1-33/M-23 4294 7/20/1998 1-31/M-21 4288 8/15/1998 4-02/Q-28 5225 8/21/1998 2-60/U-13 5118 8/31/1998 4-38/K-34 4088 9/26/1998 1-01/J-19 4313 9/26/1998 1-47A/M-20 4266 9/26/1998 2-44A/Q-11 4573 9 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 9/27/1998 2-20/L-15 1447 9/27/1998 4-32/K-38 4583 10/15/1998 2-30/O-09 4175 10/15/1998 3-07A/L-29 4290 10/20/1998 3-17D/M-31 4910 12/23/1998 1-25A/K-22 2962 1999 2/2/1999 2-22/L-14 4193 2/20/1999 1-33B/L-24 4306 2/22/1999 3-33/K-37 4641 2/23/1999 1-57/R-23 4931 2/23/1999 3-35/L-36 5250 2/28/1999 2-08/K-16 4173 2/28/1999 2-26/N-14 2828 2828 3/1/1999 2-42/P-13 5340 3/2/1999 2-52/S-14 5263 5263 3/3/1999 4-02/Q-28 4966 3/12/1999 1-39/P-17 4639 3/12/1999 1-61/Q-20 4530 3/13/1999 2-58/S-09 3055 3/13/1999 2-18/L-16 4115 3/13/1999 1-01/J-19 4299 6/20/1999 4-32/K-38 4692 6/20/1999 3-39A/I-37 4456 7/30/1999 1-25A/K-22 3301 9/11/1999 4-34/O-38 5776 9/11/1999 1-35/O-25 4643 9/12/1999 3-11/M-30 4587 9/13/1999 1-17A/I-17 4060 9/13/1999 3-01/N-29 5043 9/14/1999 1-19/I-18 4254 9/17/1999 2-44A/Q-11 4632 4632 9/17/1999 1-09A/L-21 2679 10/12/1999 1-67/T-20 4474 10/24/1999 3-49A/M-40 4491 11/4/1999 3-03/J-33 3473 11/4/1999 2-18/L-16 4242 11/15/1999 4-18/S-30 4332 2000 1/6/2000 3-15/K-33 4550 1/9/2000 3-23/N-32 4901 2/13/2000 3-25/M-27 4352 3/20/2000 3-33/K-37 4699 3/22/2000 3-35/L-36 5178 5/3/2000 2-62/Q-17 5157 5157 5/5/2000 2-52/S-14 5159 5159 5/6/2000 2-42/P-13 5156 5/6/2000 1-57/R-23 4270 5/7/2000 2-26/N-14 5898 5898 5/8/2000 1-39/P-17 4724 5/8/2000 3-23/N-32 4940 5/13/2000 3-03/J-33 3844 6/9/2000 2-58/S-09 2685 6/13/2000 3-37/L-35 4625 7/5/2000 3-01/N-29 4812 7/11/2000 3-39A/I-37 4319 9/17/2000 1-01/J-20 4308 10 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 9/17/2000 1-33B/L-24 4317 9/17/2000 1-61/Q-20 4547 9/18/2000 1-09A/L-21 2505 9/19/2000 4-32/K-38 4666 11/23/2000 3-15/K-33 4443 11/24/2000 1-47A/M-20 4276 12/7/2000 2-18/L-16 4156 4156 12/15/2000 4-18/S-30 4375 12/26/2000 2-28/P-19 4585 2001 3/4/2001 3-25/M-27 4302 3/18/2001 1-25/K-22 2698 3/19/2001 1-35/O-25 4563 3/19/2001 1-61/Q-20 4502 3/20/2001 1-03/P-16 4497 3/21/2001 1-57/R-23 5019 3/23/2001 2-50/U-08 3210 3/23/2001 2-58/S-09 2615 3/24/2001 2-52/S-14 5277 5277 3/25/2001 3-35/L-36 5161 3/26/2001 3-33/K-37 4636 4/14/2001 2-26/N-14 6137 6137 4/21/2001 1-39/P-17 4766 4/25/2001 2-42/P-13 5282 5/5/2001 1-01/J-19 4098 4098 5/6/2001 3-39A/I-37 4458 5/10/2001 4-38/K-34 4230 4230 5/18/2001 1-47A/M-20 4194 5/22/2001 3-17D/M-31 4341 5/23/2001 3-23/N-32 4900 5/25/2001 2-44A/Q-11 5010 5010 6/6/2001 1-29/M-25 4079 6/14/2001 2-06/J-22 4200 7/23/2001 1-19/I-18 4257 9/4/2001 2-22/L-14 4334 9/23/2001 1-33B/L-24 4212 9/23/2001 2-18/L-16 3903 9/24/2001 4-18/S-30 4644 12/15/2001 4-32/K-38 4636 2002 1/11/2002 2-20/L-15 2076 2076 2/25/2002 1-03/P-16 4566 3/25/2002 3-33/K-37 4587 4/15/2002 2-58/S-09 3084 4/16/2002 1-09A/L-21 2308 4/16/2002 3-39A/I-37 4242 5/16/2002 4-20/M-35 4518 7/30/2002 1-01/J-19 4255 4255 7/31/2002 1-33B/L-24 4286 7/31/2002 1-61/Q-20 4502 10/10/2002 3-07A/L-29 4199 10/12/2002 4-32/K-38 4334 10/22/2002 2-08/K-16 4306 10/22/2002 1-57/R-23 4367 10/22/2002 4-18/S-30 4171 11/27/2002 2-58/S-09 2908 11/28/2002 2-52/S-14 5092 5092 11 ENDICOTT OIL FIELD HISTORICAL KEY WELL PRESSURE DATA MPI/NFB SDI DATE WELL 3C 3B 3A 2B 2A Z1 3C 3B 3A 2B 2A Z1 12/26/2002 2-26/N-14 6290 6290 12/27/2002 1-39/P-17 4702 4702 4702 12/29/2002 3-35/L-36 5000 12/29/2002 3-23/N-32 4567 12 Appendix 5 Reservoir Pressure vs. Time Region: SDI Zone: 3C Pressure vs. Time 2000 2500 3000 3500 4000 4500 5000 5500 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: SDI Zone: 3B Pressure vs. Time 1000 2000 3000 4000 5000 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: SDI Zone: 3A Pressure vs. Time 3000 3500 4000 4500 5000 5500 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: SDI Zone: 2B Pressure vs. Time 4000 4500 5000 5500 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: SDI Zone: 2A Pressure vs. Time 3000 3500 4000 4500 5000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: NFB Zone: 3C Pressure vs. Time 1000 2000 3000 4000 5000 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Key Well All Wells BP Exploration, Endicott Region: NFB Zone: 3B Pressure vs. Time 1000 2000 3000 4000 5000 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Key Well All Wells BP Exploration, Endicott Region: NFB Zone: 3A Pressure vs. Time 3000 3500 4000 4500 5000 5500 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: NFB Zone: 2B Pressure vs. Time 3500 4000 4500 5000 5500 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: NFB Zone: 2A Pressure vs. Time 4000 4500 5000 5500 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: MPI Zone: 3C Pressure vs. Time 1000 2000 3000 4000 5000 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Key Well All Wells BP Exploration, Endicott Region: MPI Zone: 3B Pressure vs. Time 3500 4000 4500 5000 5500 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Key Well All Wells BP Exploration, Endicott Region: MPI Zone: 3A Pressure vs. Time 4000 4500 5000 5500 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: MPI Zone:2B Pressure vs. Time 4000 4500 5000 5500 6000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Region: MPI Zone:2A Pressure vs. Time 3000 3500 4000 4500 5000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumKey Well All Wells BP Exploration, Endicott Zone:1 Pressure vs. Time 2000 2500 3000 3500 4000 4500 5000 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 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04Pressure at 10,000 ft TVD ss DatumMPI Key Wells MPI All Wells SDI All Wells BP Exploration, Endicott Appendix 6 Endicott Shut-in Well List Endicott/Sag Delta North/Eider 2003 Shut In Wells Sw Name Date Shut-In Reason for Well Shut- In 1 Current Mechanical Condition of Well 2 Future Utility Plans & Possibilities 3 Comments 1-01/J-19 Nov-02 D. Tubing leak Tubing leak, good casing integrity 2. Remedial well work planned Non rig tubing repair planned 1-15/P-25 Jul-01 D. Tubing leak Tubing leak, good casing integrity 2. Remedial well work planned Non rig tubing repair planned 1-17A/I-17 May-99 A. -- High TGOR No known problems 1. sidetrack candidate 1-21/K-25 Jan-00 A, D -- High TGOR, tubing leak Confirmed tubing leak. Wireline plug in tubing 1. Evaluating sidetrack or conversion options Potential for sidetrack or workover to convert to gas injector 2-36//O-14 Sep-02 D. Tubing leak Tubing leak, good casing integrity 2. Remedial well work planned rig tubing repair planned 2-62/Q-17 Oct-00 A, B -- High GOR, High Watercut A.-- High TGOR 1. Evaluating remedial options potential for cycle producer 2-68/S-17 Jan-97 A.-- High TGOR A.-- High TGOR 6. Other return to production as future EOR producer 3-23/N-32 Nov-01 A. High TGOR No known problems 1. Evaluating sidetrack or conversion options 3-35/L-36 Mar-97 B. -- High TGOR Mechanical condition satisfactory.1. sidetrack candidate using as 3A pressure monitor 4-14/R-34 Apr-00 D. Casing leak Casing leak 3. Long term shut in/ no immediate plans Offset injector inject adequately supports area 4-26/O-34 Oct-01 B. -- High TGOR No known problems 6. Other return to production as future EOR producer 4-28/N-37 Oct-01 B. -- High TGOR No known problems 6. Other return to production as future EOR producer 4-40/P-43 Apr-00 C. -- Low rate injector No known problems 6. Other Possible MI injector or return to water injector to support infill locations 4-44/M-44 Jan-93 C. -- Poor Injectivity 380' coiled tubing fish in hole 1. sidetrack candidate Coiled tubing fish to recover prior to sidetrack 4-48/K-43 Apr-97 E. -- WF Management Mechanical condition satisfactory.1. sidetrack candidate not providing useful WF support 4-50/K-41 May-98 B. -- High TGOR 9 5/8" pack-off needs sealing 6. Other return to production as future EOR producer *Note - Wells were shut in 100% during 2003 03 Exhibit - Endicott and Eider Shut in Wells 2003.xls Endicott/Sag Delta North/Eider 2003 Shut In Wells *Note - Wells were shut in 100% during 2003 03 Exhibit - Endicott and Eider Shut in Wells 2003.xls