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units of the Formation, Horn River Basin and Cordova Embayment, Northeastern

Sara McPhail, Warren Walsh and Cassandra Lee British Columbia Ministry of Energy, Mines and Petroleum Resources

Patrick A. Monahan, Monahan Petroleum Consulting/Penn West Energy Trust

The Horn River Basin (HRB) and Cordova Embayment (CE) of northeastern British Columbia are bordered by the reef-fringed carbonate platforms of the Middle Upper Keg River, Sulphur Point, and Slave Point formations (Appendix A). Basinal laterally-equivalent to these carbonate units comprise the Evie, Otter Park, and Muskwa members of the (Figure 1). These shales, particularly those of the Evie and Muskwa members that have high silica and organic contents are the target of a developing play.

Figure 1: Middle and basal Upper Devonian units of the HRB and CE.

basinal succession platform succession Fort Simpson Shale Muskwa Muskwa Upper Devonian

Otter Park Slave Point

Slave Pt/Sulphur Point basinal Middle Devonian equivalents Sulphur Point Evie Upper Keg River Lower Keg River

Exploration activity for these shales in this lightly developed region has developed dramatically over the past two years (Adams et al, 2007). Total bonus paid for rights to the Horn River Shale exceeded $400 million in 2007. Experimental schemes, which allow an operator to hold well data confidential for 3 years, have been granted to several companies within the HRB and CE, and 48 wells have been licensed or drilled to test these targets since 2004 (Appendix A). Few results are available, but the recompletion of a vertical well in d-60-I/94-O-9 in the HRB resulted in a gas flow of 13 e3m3/, and EOG recently announced gas flow of 140 e3m3/d from their horizontal well in a-26-G/94-O-9.

The purpose of this display is to highlight the main shale units that are the focus of shale gas activity in the HRB and CE, using available core, core analysis data, and geophysical well logs. A brief overview of the basinal stratigraphy is provided, supplemented by a cross section (Appendix B).

Although continuous non-confidential cores of the shale units are rare, several cores (mainly the result of missed core points!) do exist. Analytical data, including total organic content (TOC),

1 Shale units of the Horn River Basin and Cordova Embayment vitrinite reflectance, Rock Eval, porosity, permeability, mineralogy and other physical properties, are available for these cores and other wells in the region (Walsh and McPhail, 2007). Six cored wells have been selected for this core display and analytical data for these cores is presented in Table 1 and Appendix C. Additional analytical data is summarized for two wells with sidewall cores that were collected from the entire Horn River Formation (Appendix D).

Table 1: Summary of Horn River Formation shale cores illustrated in this display c-28-D/ b-97-A/ a-9-F/ a-47-G/ b-49-G/ d-6-H/ Well location 94-O-1 94-O-3 94-P-3 94-P-4 94-P-7 94-P-10 WA 414 12681 714 5225 1279 3679 Cored Interval 1949.1- #1: 1974.0-1992.0 2022.6- 2336.0- 1810.4- 2003.4- (m) 1953.1 #2: 1992.0-2002.4 2034.4 2354.0 1816.5 2021.6 Core #1: 17.6 3.9 11.8 18.0 6.1 17.7 Thickness (m) #2: 9.9 Evie, Muskwa, Otter Park, Evie, Lower Cored Units Muskwa Slave Evie Muskwa Lower Keg River Keg Point River 6393- 6636.5- 7664- 5941- 6573.6- Core (ft) 6476.3-6568.2 analysis 6406 6646 7717 5960 6629.3 depth 1948.6- 2022.8- 2336- 1810.8- 2003.6- (m) 1974-2002 interval 1952.5 2025.7 2352.2 1816.6 2020.6 Otter Units Muskwa Evie Muskwa Evie Muskwa Evie Park 0.20- 0.76- TOC (%) 1.6-7.97 0.3-6.56 n/a 1.38-8 0.15-1.8 4.99 9.57 Porosity 4.77- 0.23- 3.56- 2.22- 0.39 0.49-5.1 n/a (%) 7.36 1.19 4.45 6.79 63.3- 21.2- Qtz 7-76.9 26-81 14-63.2 18-33 7-67 71.1 78.9 Calc 0-88 2.7-15.3 0-8.2 0-14 5.3-54 0 0-9 . Core Analysis Data Dol. 0-44 0-3.3 0-20.5 0-14 1.6-33 0-8 0-42 (wt.%) Clay 8.9-25.7 8.7-12.6 10-54.7 13-38 7.5-57.1 34-54 1-22 Key Mineralogy* Pyr. 1.1-3.1 4.2-4.4 3.5-23.3 3-15 2-19 6-41 0-5 *Qtz = quartz, Calc = calcite, Dol = dolomite, Pyr = pyrite.

Basinal Shale Units

The basinal stratigraphy consists of the Evie, Otter Park and Muskwa members. However, basinal equivalents of the Slave Point and Sulphur Point can be also recognized in the basinal succession between the Evie and Otter Park (Morrow et al., 2002). All of these terms have been inconsistently used in the past, and here we primarily follow the usage of Gray and Kassube

2 Shale units of the Horn River Basin and Cordova Embayment

(1963), Meijer Drees (1994, figure 10.11) and Oldale and Munday (1994, figure 11.8a), modified to include the Slave Point and Sulphur Point equivalents. Others have used the term Klua for the Evie (e.g. Morrow et al., 2002).

Evie Member

The Evie Member forms the lower package of highly radioactive shales in the Horn River Formation, and consists of dark grey to black, organic-rich, pyritic, variably calcareous, siliceous shale. This unit is characterized on logs by high gamma ray readings and high resistivity. The uppermost part of the unit includes more argillaceous shales, and generally has lower radioactivity and resistivity. In the CE, the Evie is generally 40 m thick. On the eastern margin of the CE, where the Slave Point and Sulphur Point carbonate platform has prograded over the Upper Keg River platform margin, the Evie extends beneath Slave Point and Sulphur Point platform carbonates. In the HRB the Evie is over 75 m thick immediately west of the Upper Keg River to Slave Point platform margin and it thins west to less than 40 m thick in the vicinity of the Bovie Lake Structure. The Evie overlies carbonates of the Lower Keg River.

In this core display, the Evie is represented by cores of the d-6-H/94-P-10 well in the CE and b- 97-A/94-O-3 and a-47-G/94-P-4 wells at the southern regions of the HRB. In the d-6-H well, the lowermost 14 m of the Evie is cored, and consists of dark, organic-rich siliceous shale with some calcareous laminae. In the a-47-G well, 18 m of the upper part of the Evie is cored and consists of dark, organic-rich calcareous shale that is more siliceous at the base, and grades upwards to a siliceous argillaceous shale In the b-97-A well, the entire Evie is cored and consists of a lower interval of highly radioactive organic-rich siliceous shale, a middle unit of argillaceous shale, and an upper interval of highly radioactive organic-rich siliceous shale. The upper siliceous shale in this well may be the basinal equivalent of the Slave Point and Sulphur Point formations.

Basinal Slave Point and Sulphur Point equivalents.

Basinal equivalents of the Slave Point and Sulphur Point Formations consist of argillaceous and interbedded shales. These are best developed in the CE, where they are in the order of 60 m thick, and the Slave Point and Sulphur Point equivalents can each be distinguished (Morrow et al., 2002). In the HRB, a regionally traceable unit that thins westwards from 15 m adjacent to the Upper Keg River to Slave Point platform margin to 5 m thick near the Bovie Lake structure is interpreted to represent the basinal equivalent of the Slave Point and Sulphur Point.

Otter Park Member

The Otter Park Member is the middle, less radioactive part of the Horn River Formation. It reaches a maximum thickness of over 270 m in the southeast corner of the HRB, where it consists of medium to dark grey calcareous shale. It is characterized on logs by lower

3 Shale units of the Horn River Basin and Cordova Embayment radioactivity and resistivity than the Evie and Muskwa Members. However, the unit thins depositionally to the north and west, and includes more highly radioactive siliceous black shale beds in this direction.

The upper part of the core in the b-97-A well can be correlated with the basal part of the Otter Park and there it consists of dark grey, calcareous, shale that is slightly grittier than the underlying Evie.

Muskwa Member

The Muskwa constitutes the upper, highly radioactive part of the Horn River Formation. It consists of grey to black, organic-rich, pyritic, siliceous shale, and is characterized on logs by high gamma ray readings and high resistivity. It has a gradational contact with the overlying argillaceous shales of the Fort Simpson Formation. In the CE, it is between 50 and 70 m thick. In the HRB, it is 30 m thick adjacent to the Upper Keg River to Slave Point platform margin and thickens westward to over 60 m in the vicinity of the Bovie Lake Structure. However, it thins considerably where the Otter Park thickness reaches its maximum in the southeast corner of the HRB. Unlike the underlying basinal shales units, the Muskwa is not restricted to the CE and HRB, but thins and extends over the in the adjacent carbonate platforms.

In this display, the Muskwa is represented by the cores of the a-9-F/94-P-3 and the b-49-G/94-P- 10 wells, where thin Muskwa sections overlie the Slave Point Formation, and the core of the c- 28-D/94-O-1 well, where it occurs in a basinal setting. In the a-9-F well, the Muskwa is 10 m thick, and the lower 7 m is represented in core. This consists of a dark grey, variably calcareous shale. In the b-49-G well, the Muskwa is 15 m thick, and the uppermost 6 m was cored. This interval consists of medium to dark grey, non-calcareous shale. TOC values decrease upward, reflecting the gradational upper contact with the Fort Simpson. In the c-28-D well, the Muskwa is 60 m thick and the 4 m thick core consists of dark grey calcareous shale.

4 Shale units of the Horn River Basin and Cordova Embayment

References

Adams, C., McPhail, S., Walsh, W. (2007): Summary of Shale Gas Activity in Northeast British Columbia 2007; Ministry of Energy, Mines and Petroleum Resources, Petroleum Geology Open File 2007-1. Gray, F.F., and Kassube, J.R. (1963): Geology and stratigraphy of Clarke Lake gas field, British Columbia; American Association of Petroleum Geologists Bulletin, volume 47, pages 467-483. Meijer Drees, N.J. (1994): Chapter 10 – Devonian of the Western Sedimentary Basin; in Geological Atlas of the Western Canada Sedimentary Basin, Mossop, G., and Shetsen, I., Compilers, Canadian Society of Petroleum Geologists and Research Council, pages 128-147. Morrow, D.W., Zhao, M., Stasiuk, L.D. (2002): The gas-bearing Devonian Presqu’ile Dolomite of the Cordova Embayment region of British Columbia, Canada: Dolomitization and the stratigraphic template; American Association of Petroleum Geologists Bulletin, volume 86, pages 1609-1638. Oldale, H.S., and Munday, R.J. (1994): Devonian of the Western Canada Sedimentary Basin; in Geological Atlas of the Western Canada Sedimentary Basin, Mossop, G., and Shetsen, I., Compilers, Canadian Society of Petroleum Geologists and Alberta Research Council, pages 148-163. Walsh, W. and McPhail, S. (2007): Shale Gas Potential: Core and Cuttings Analysis, Northeast British Columbia; Ministry of Energy, Mines and Petroleum Resources, Petroleum Geology Open File 2007-01.

5 Shale units of the Horn River Basin and Cordova Embayment

6 Shale units of the Horn River Basin and Cordova Embayment

Appendix A

Activity Map of the Horn River Basin and Cordova Embayment 124°0'0"W 123°0'0"W 122°0'0"W 121°0'0"W

! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Horn River Basin Key Drilled Wells and Well Authorizations ! ! ! ! ! ! ! !! ! 17648 ! ! ! !

N ! Well Well ! ! " DYesUcrKipOtioNn TERRITORIES Description ! ! !

0 ! ! ' Q ! !

0 Licence Licence ! ! ! ° ! ! ! !

0 ! Number Number ! ! ! ! ! ! 6 ! ! ! ! ! ENCANA CORPORATION ENCANA CORPORATION ! ! ! 23878 20612 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ECA ECOG HZ ETSHO B-C076-K/094-O-08 ECA ECOG ERTSHO D- A077-J/09!4-O-08 !!! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/A-056-K/094-O-08/0 LICENCE: 2008-01-12 UWI: 02/D-077-J/094-O-08/0 Licence: 2005-12-13 !! ! ! ! ! ! ! ! E ! ! Well Authorization Granted Well Authorization Granted ! ! ! ! ! ! ! ! ! ! ! !! ! C o ! r d o v a ! ! V C o r d o v a ! ! ! ! ! 23838 EOG 20563 ENCANA CORPORATION ! ! ! ! ! ! ! ! ! ! ! 23019 ! ! EOG TATTOO D-097-B/094-O-10 ECA ECOGI SNAKE RIVER D- 028-D/094-O-01 ! ! ! ! ! ! ! ! Ô 21643 !! ! ! ! ! ! ! ! ! UWI: 02/D-097-B/094-O-10/0 UWI: 00/D-028-D/094-O-01/0 RR: 2006-03-05 ! ! ! ! ! R ! =Q ! ! ! ! ! ! ! 23321 ! ! ! Confidential Non-Con fidential ! ! ! ! ! ! E m b a y m e n t ! ! ! E m b a y m e n t ! ! 23650 APACHE 20562 ENCANA CORPORATION ! ! ! ! ! ! ! ! ! D ! ! ! ! ! APACHE HZ OOTLA A-C002-J/094-O-09 ECA ECOG TRAIL B- A094-G/094-O-09 ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! UWI: 02/A-C002-J/094-O-09/0 UWI: 02R /B-094-G/094-O-09/0 Licence: 2005-12-12 ! ! ! !! ! ! ! ! ! ! ! Confidential W!ell Authorization Granted ! ! ! ! ! ! A ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 23648 APACHE 20554 ENCANA CORPORATION ! ! ! ! ! I ! ! ! ! ! ! ! ! ! ! ! APACHE HZ OOTLA A-A002-J/094-O-09 ECA ECOG OOTLA A-060-I/094-O-09 ! ! ! ! ! ! ! ! ! ! L ! ! ! ! ! !! ! ! ! ! ! ! ! UWI: 02/A-002-J/094-O-09/0 UWI: 00/A-060-I/094-O-09/0 Licence: 2005-12-13 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! Confidential Well Authorization Granted ! !! ! ! !! ! ! ! ! ! ! ! ! ! ! L i a r d ! ! ! ! L i a r d ! ! ! 23639 DEVON ARL 17648 EOG RESOURCES CANADA INC. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! DEVON ARL KOMIE A-085-B/094-O-08 EOG MAXHAMISH C-083-L/094-O-15 Maxhamish ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/A-085-B/094-O-08/0 LICENCE: 2008-01-02 UWI: 00/C-083-L/094-O-15/0 RR: 2004-04-07 ! ! ! ! ! ! ! !! ! ! ! Lake ! !! ! ! ! ! ! ! ! ! ! Well Authorization Granted Well Authorization Granted ! ! ! ! ! ! ! ! ! ! ! B a s i n ! ! ! ! ! ! ! 23615 ENCANA CORPORATION 17646 EOG RESOURCES CANADA INC. ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ECA ECOG ETSHO D-077-K/094-O-08 EOG VALIANT D-049-J/094-O-03 ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/D-077-K/094-O-08/0 LICENCE: 2007-12-12 UWI: 00/D-049-J/094-O-03/0 Licence: 2004-03-02 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Well Authorization Granted Well Authorization Granted ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 23601 ENCANA CORPORATION 17162 APACHE CANADA LTD. ! ! ! ! ! ! ! ! ! ! ! ! = ! ! ! ! ! ! ECA ECOG HZ ET SHO D-070-J/094-O-08 APACHE MISSLE C-071-A/094-O-09 ! ! ! ! ! ! ! ! ! ! 23353 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/D-070-J/094-O-08/0 UWI: 00/C-071-A/094-O-09/0 RR: 2004-02-09 Maxhamish Lake ! ! ! ! ! ! ! ! ! ! ! ! ! !!! ! ! ! ! ! ! ! ! ! Confidential Non-Confidential !! ! ! ! ! ! ! ! ! ! ! ! ! Protected Area ! ! ! ! !! ! ! ! ! ! ! 23539 NEXEN IN!C. UWI: 00/C-071-A/094-O-09/2 RR: 2004-02-09 ! ! ! ! ! ! ! ! ! ! ! ! !! !!! ! ! ! ! ! ! NEXEN INC. HZ KOMIE A-023-H/094-O-08 Non-Confidential ! ! ! !! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/A-012-H/094-O-08/0 LICENCE: 2007-11-19 17161 APACHE CANADA LTD. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Well Authorization Granted APACHE OOTLA A-012-H/094-O-09 ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 23498 NEXEN INC. UWI: 00/A-012-H/094-O-09/0 RR: 2004-02-03 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! NEXEN INC. HZ KOMIE D-094A/094-O-08 Confidential (2009!-02-10) ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! UWI: 02/C-005-H/094-O-08/0 LICENCE: 2007-11-19 17158 APACHE CANADA LTD. ! ! ! ! ! ! ! 23499 ! ! ! !! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! Well Authorization Granted APACHE OOTLA D-052-H/094-O-09 ! ! ! ! ! ! ! ! ! ! ! ! ! ! = ! ! ! ! ! 23398 SMR OIL & GAS LTD. UWI: 00/D-052-H/094-O-09/0 RR: 2004-02-09 ! ! ! ! ! = ! ! ! ! 5207 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! 231! 84 SMR TATTOO D-A063-H/094-O-10 Non-Confidential ! ! ! =ØQ ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! 20554 ! ! ! ! ! ! ! ! ! ! ! UWI: 02/D-063-H/094-O-10/0 LICENCE: 2007-10-24 UWI: 00/A-063-H/094-O-09/2 RR: 2006-03-21 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Well Authorization Granted Confidential (2009-03-21) ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 23353 SMR OIL & GAS LTD. 17093 APACHE CANADA LTD. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! SMR TATTOO B-077-B/094-O-15 APACHE OOTLA D- 028-E/094-P-12 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 22498 ! ! ! ! ! ! !! ! ! ! ! ! ! ! 00/B-077-B/094-O-15/0 UWI: 00/D-028-E/094-P-12/0 RR: 2004-02-22 ! ! ! ! ! ! ! ! = ! ! ! ! ! ! ! ! ! ! ! ! 23650 !!! ! ! ! ! ! ! ! ! Well Authorization Granted Confidential (2009-02-10) ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! H ! ! ! ! ! 23334 DEVON CANADA CORPORATION 17004 APACHE CANADA LTD. ! == ! ! ! ! ! ! ! ! = ! ! ! !! ! ! ! !! ! 23648 ! ! ! ! ! ! ! ! ! ! DEVON ARL KOMIE D-090-G/094-O-08 APACHE MISSLE D- 092-A/094-O-09 ! ! ! ! ! ! ! ! ! ! = ! ! ! ! ! ! ! ! ! ! ! Ø ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/D-091-F/094-O-08/0 LICENCE: 2007-10-04 UWI: 00/D-092-A/094-O-09/0 Licence: 2003-12-02 ! ! ! ! ! ! ! ! ! ! ! ! ! ! 7584 20562 ! ! ! ! ! ! ! ! ! ! ! Well Authorization Granted Well Authorization Granted ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 23321 EOG RESOURCES CANADA INC. 17003 APACHE CANADA LTD. ! ! ! = ! 17158 ! ! ! ! ! ! ! ! ! ! 2339!!!8! ÆD ! ! ! ! ! ! ! ! ! ! 3679 EOG HZ MAXHAMISH B-A022-L/094-O-15 APACHE MISSLE C- 083-A/094-O-09 ! ! ! ! ! ! ! ! Ø ! ! ! ! ! ! = ! ! ! ! ! ! 22667 ! ! ! ! ! UWI: 00/D-013-L/094-O-15/0 LICENCE: 2007-09-28 UWI: 00/C-083-A/094-O-09/0 Licence: 2003-12-02 ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Well Authorization Granted Well Authorization Granted ! !! ! ! ! = ! ! ! ! ! ! ! ! ! =! ! ! ! ! ! 2H 2666 ! ! ! ! 23315 DEVON CANADA CORPORATION 16652 EOG RESOURCES CANADA INC. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! DEVON ARL KOMIE B-099-G/094-O-08 EOG EVIE A- 049-E/094-J-15 ! ! ! ! Æ ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! H ! ! ! ! !22518 17161 ! ! ! ! UWI: 00/A-001-K/094-O-08/0 LICENCE: 2007-09-28 UWI: 00/A-049-E/094-J-15!/0 RR: 2003-12-25 17093 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! Æ ! ! Well Authorization Granted Well Authorization Granted ! = ! ! ! ! ! ! ! = ! !! ! ! ! ! ! ! ! 23019 EOG RESOURCES CANADA INC. 15506 ENCANA OIL & GAS CO. LTD. ! ! ! ! ! ! ! ! ! ! ! ! ! ! 3067 22517 ! ! !! ! ! ! ! ! = ! ! ! ! ! ! EOG HZ MAXHAMISH B-022-L/094-O-15 ECAOG TRAIL A- 099-I/094-O-07 ! ! 17003 17004 ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! Ø D ! ! ! ! ! ! ! UWI: 00/B-022-L/094-O-15/0 SPUD: 2007-07-16 UWI: 00/A-099-I/094-O-07/0 Licence: 2000-12-20 ! ! ! Q ! ! ! ! ! ! ! ! ! = ! ! ! ! 23838 ! ! ! ! ! ! ! Q ! ! ! ! 22723 NEXEN INC. Well Authorization Granted ! ! ! ! ! 13322 Æ ! ! ! ! ! ! ! ! ! ! ! = Q ! ! ! ! ! 0 9 4 O ! ! Q ! ! ! NEXEN INC. HZ TSEA C- 016-I/094-O-08 ENCANA OIL & GAS CO. LTD. 0 9 4 O 13795 ! ! 15498 ! ! 0 9 4 P ! ! ! 0 9 4 P 13323 ! ! ! ! ! ! ! ! ! ! UWI: 00/C-027-I/094-O-08/0 LICENCE: 2007-02-07 ECAOG TRAIL B- 048-A/094-O- 10 ! 1!!7162 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! Well Authorization Granted UWI: 00/B-048-A/094-O-10/0 RR: 2003-03-26 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 22667 NEXEN INC. Confidential (2008-05-23) ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! NEXEN INC. HZ OOTLA C- 034-G/094-O-09 15103 ENCANA OIL & GAS CO. LTD. !! ! ! ! ! ! ! ! ! !! ! ! ! ! 15498 ! ! ! ! ! UWI: 00/C-045-G/094-O-09/0 LICENCE: 2007-01-29 ECAOG ET AL KIWIGANA C- 068-J/094-O-06 ! ! ! ! ! ! ! ! ! 0 9 4 P !! 22661 ! ! ! ! ! ! ! ! Well Authorization Granted UWI: 00/D-068-J/094-O-06/0 RR: 2002-11-28 ! Q ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! = ! ! ! ! NEXEN INC. Non-Confidential ! ! ! 22666 ! ! = ! ! ! 2! 2556 ! ! ! ! H ! ! ! ! ! ! ! ! ! ! ! ! ! NEXEN INC. OOTLA A- 045-G/094-O-09 PARAMOUNT RESOURCES LTD. ! ! ! ! ! 13947 ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/A-045-G/094-O-09/0 LICENCE: 2007-03-02 PARA KOMIE B- 017-G/094-O-08 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Well Authorization Granted UWI: 00/B-017-G/094-O-08/0 Licence: 2001-02-06 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !!! ! ! ! ! ! ! !! ! ! ! NEXEN INC. Well Authorization Granted ! ! ! ! ! 22661 15506 ! ! ! ! ! ! ! !!! 20613 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! NEXEN INC. HZ GOTE B-018-B/094-O-09 13795 APACHE CANADA LTD. H ! ! ! ! ! ! ! ! ! ! ! !! ! ! = 23615 ! ! ! ! ! ! ! ! ! ! ! ! Ø = ! ! ! ! ! UWI: 00/C-029-B/094-O-09/0 LICENCE: 2007-02-07 APACHE N MISSLE B- 085-A/094-O-09 ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! = ! 20612 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Well Authorization Granted UWI: 00/B-085-A/094-O-09/0 RR: 2001-03-03 ! ! !! ! ! ! = ! ! ! ! ! ! = ! ! ! = = ! ! ! ! ! 22556 NEXEN INC. Non-Confidential ! D! 16070 ! 23878 ! ! ! 23601 ! ! !! ! ! ! ! ! ! NEXEN INC. GOTE A- 029-B/094-O-09 UWI: 00/B-085-A/094-O-09/2 RR: 2001-03-03 ! ! ! !! ! ! ! Q ! !!! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! UWI: 00/A-029-B/094-O-09/0 RR: 2007-03-18 Non-Confidential !! ! ! ! ! ! !! ! ! ! D ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! 22723 ! ! ! ! ! ! ! ! ! Confidential (2010-03-18) UWI: 00/B-085-A/094-O-09/3 RR: 2004-01-29 ! Q ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 15103 ! ! !! ! ! 22554 NEXEN INC. Non-Confidential ! ! ! ! ! ! = Ô ! ! ! =! ! ! ! ! H ! NEXEN INC. GOTE A- 027-I/094-O-08 13323 ENCANA CORPORATION !! ! ! ! 0 9 4 N ! ! ! ! ! ! ! ! ! ! ! ! 0 9 4 N ! ! ! ! ! ! ! !! 22554 ! ! ! ! ! ! ! UWI: 00/A-027-I/094-O-08/0 RR: 2007-03-23 ECA TRAIL B- 091-B/094-O-10 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 23315 ! ! ! ! Confidential (2010-03-23) ! UWI: 00/B-091-B/094-O-10/0 RR: 2001-02-15 ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! DEVON CANADA CORPORATION Confidential (2009-03-24) =2! 2526 ! ! ! ! ! ! ! ! ! 22526 ! ! ! ! ! ! ! Cordova Embayment Key Wells and Well Authorizations ! ! ! ! ! ! ! ! ! = ! ! ! ! ! ! ! !! ! Q ! ! ! ! ! DEVON ARL KOMIE C- 100-G/094-O-08 13322 ENCANA OIL & GAS CO. LTD. 23334 ! ! ! ! ! ! !!! Well Description ! ! ! ! ! ! ! ! !! !! !! ! ! ! ! ! ! ! ! ! UWI: 00/C-100-G/094-O-08/0 RR: 2007-03-03 ECAOG TRAIL B- 002-H/094-O-10 ! ! ! ! ! !! ! ! ! ! Licence ! ! ! ! ! ! ! ! ! ! ! ! ! ! Confidential (2008-03-03) UWI: 00/B-002-H/094-O-10/0 RR: 2001-03-27 ! ! ! N!umber ! ! ! ! ! ! ! ! !! ! !! ! ! ! ! ! ! ! ! 22518 EOG RESOURCES CANADA INC. Non-Confidential ! ! ! ! ! ! ! ! ! ! ! !! ! 23499 CANADIAN NATURAL RESOURCES LIMI!TED ! ! ! ! ! ! ! ! ! ! !! ! ! EOG TRAIL C- 015-G/094-O-09 7584 ENCANA CORPORATION ! ! ! ! ! ! ! ! ! CNR!L HELMET D-A! 017-K/094-P-10 ! ! ! ! ! ! ! ! ! ! ! !! !! ! ! ! ! ! ! UWI: 00/C-015-G/094-O-09/0 RR: 2007-01-21 ECA ECOG TRAIL B- 094-G/094-O-09 ! ! ! ! !! ! ! ! ! UWI: 02/!D-017-K/094-P-10/0 LICENCE: 200-11-16 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Confidential (2010-01-21) UWI: 00/B-094-G/094-O-09/0 RR: 1991-01-17 !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Well Authorization G!ranted ! ! ! ! ! ! ! ! ! 22517 EOG RESOURCES CANADA INC. 5207 ENCANA CORPORATION ! ! ! ! ! !! ! ! ! ! CANADIAN NATURAL RESOURCES LIMITED ! !! ! ! ! 23184 ! ! ! ! ! ! !!! EOG HZ TRAIL A- 026-G/094-O-09 ECA ECOG OOTLA D- 060-I/094-O-09 = ! ! !! ! ! ! ! ! ! ! ! ! !! ! ! ! C!!NRL HZ HELMET D-!017-K/094-P-10 ! ! ! !! ! ! 23539 ! ! ! ! ! UWI: 00/A-015-G/094-O-09/0 RR: 2007-02-15 UWI: 00/D-060-I/094-O-09/0 RR: 1980-03-17 13947 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/B-016-K/094-9-10/0 LICENCE: 2007-09-05 ! ! ! ! ! ! ! ! ! ! ! ! Confidential (2010-02-15) Non-Confidential ! ! ! ! ! ! = ! ! ! Well Authorization Granted ! ! ! ! !! ! ! ! ! APACHE CANADA LTD. UWI: 00/D-060-I/094-O-09/2 RR: 2006-02-12 ! ! ! ! ! ! ! ! 22498 ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! C! ANADIAN NATURAL RESOUR!CES LIMITED ! ! ! ! ! 3679 ! ! = ! ! ! ! ! ! ! ! ! ! APACHE ET AL HZ OOTLA D- 091-G/094-O-09 Confidential (2009-02-12) ! ! ! ! !! ! ! ! ! ! ! ! ! CZAR ET AL N! HELMET! D-006-H/094-P-10 23498 ! ! ! ! !! ! ! ! ! ! ! ! ! UWI: 00/A-011-J/094-O-09/0 RR: 2007-03-20 3067 ENCANA OIL & GAS CO. LTD. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UW!I: 00/D-006-H/094-P-10/0 RR: 1976-02-29 ! ! ! ! ! !! ! Confidential (2010-03-20) ECAOG TRAIL C- 002-H/094-O-10 ! ! ! ! ! ! !! ! ! = ! ! ! ! ! ! ! !! ! ! ! !!! ! ! ! ! ! ! ! Non-Confidential 23639 ! ! ! ! ! ! ! ! ! ! ! ! 21643 EOG RESOURCES CANADA INC. UWI: 00/C-002-H/094-O-10/0 RR:1972-04-03 ! ! ! !!!! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! EOG MAXHAMISH D- 012-L/094-O-15 Non-Confidential ! ! ! ! ! ! !! !! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! UWI: 00/D-012-L/094-O-15/0 RR: 2006-10-27 UWI: 00/C-002-H/094-O-10/2 RR: 2000-03-11 ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! Confidential (2009-10-27) Non-Confidential ! ! ! ! ! !! ! ! ! ! ! ! !!! !! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! 20613 ENCANA CORPORATION 414 BP CANADA ENERGY COMPANY ! ! ! !! ! ! ! ! ! ! !! ! ! ! ! ! ! ! !! ! ! ! ! !! ! ! ! ! ! ECA ECOG HZ ETSHO B-090-J/094-O-08 PAN AM ET AL A- 1 SNAKE RIVER C- 028-D/094 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/D-070-J/094-O-08/0 RR: 2007-02-07 UWI: 00/C-028-D/094-O-01/0 RR: 1959-04-08 ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! Confidential (2010-02-07) Non-Confidential ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! UWI: 00/D-070-J/094-O-08/2 RR: 2007-02-07 143 CONOCOPHILLIPS CANADA RESOURCES CORP. ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Confidential (2010-02-07) GULF STATES EVIE LAKE NO. 1 B-090-G/094-J-14 ! ! ! ! ! ! ! !! ! ! ! ! ! !! !!! ! ! ! ! !! ! ! ! UWI: 00/B-090-G/094-J-14 RR: 1956-01-24 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Non-Confidential ! ! !! !! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! !! ! !!! ! ! ! H o r n R i v e r ! ! ! ! ! ! ! Legend H o r n R i v e r ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Drilled Well Experimental Class ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! Licensed Location Experimental Class ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Key Well or Location Non-Experimental Class ! ! ! ! ! !! ! ! ! ! ! ! ! !! ! !! ! ! B a s i n ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! 17646 ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! = ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! E L S ! ! ! ! ! N !! ! T O !! ! ! R ! ! ! ! ! ! !! ! ! O N ! ! ! ! !! F ! ! ! ! ! ! ! ! ! ! ! ! R ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Shale Gas Activity ! ! ! ! ! ! ! ! ! I ! ! ! ! ! ! ! ! V !! ! ! ! ! ! ! ! !! ! ! ! ! ! m E ! ! ! ! ! m ! ! ! ! R !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Horn River Basin, British Columbia ! ! ! ! ! e ! ! ! ! ! e ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Yukon N.W.T. ! ! ! ! ! ! tt ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! !! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Legend ! ! !! ! ! ! ! ! ! ! Kotcho ! ! ! s ! ! Yukon N.W.T. s ! ! = ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Fort Nelson ! ! ! ! ! ! ! ! ! ! ! Lake ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !( ! ! ! ! ! ! Community ! !! ! ! ! ! ! yy ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

Well N ! ! ! ! ! ! ! " ! ! ! ! ! Alberta ! ! 0

! ' S ! ! ! ! ! ! !

S ! ! ! 0 ! ! ! ! ! !! British ! ° ! ! ! ! ! ! ! 9 ! ! ! ! ! ! ! Paved Road ! 5 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Columbia ! ! ! ! ! ! ! ! Alberta ! !! ! ! ! ! ! ! ! ! ! ! ! !! ! Gravel Road British ! ! ! ! ! ! ! tt ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Columbia ! S! l a v e !! P o i n t ! ! ! S l a v e P o i n t Winter Road l ! ! ! ! l !! ! ! ! ! ! ! ! ! ! !! ! ! ! ! 414 ! ! ! ! ! ! ! ! ! ! ! ! Protected Area ! ! ! ! ! ! Ø ! ! ! ! ! ! ! = ! ! ! ! uu ! ! ! ! ! ! ! ! ! !! ! P l a t f o r m 20563 ! P l a t f o r m ! ! ! ! ! ! ! ! ! !!! !! ! ! ! Active Tenure ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! Q !! ! ! ! ! ! ! ! ! ! ! ! aa ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Gas Pipeline ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ± ! ! ! U.S.A. ! F ! ! ! ! ! ! N F ! ! ! ! ! ! " ! ! ! Experimental Schemes U.S.A. ! ! !! ! 0 ! ! ! ! ! ' ! ! ! !! ! ! ! ! ! ! ! ! ! !

0 ! ! ! ! !! ! ° ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 9 ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 5 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! Apache Encana ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! !! ! ! ! ! ! ! ! ! ! !! ! ! !! ! ! !!! ! e ! ! ! ! ! ! ! e ! ! ! ! ! ! ! ! ! Scale: 1:250 000 ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! Burlington EOG ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! !! ! ! ii ! ! ! ! ! ! !!! !!! ! ! ! ! ! Projection: BC Albers, NAD 83 ! ! ! ! ! ! ! !! ! ! ! ! ! !! ! ! !! ! CNRL Nexen ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! v ! ! ! ! v !! ! ! ! ! ! ! ! ! ! ! ! ! ! 0 5 10 20 ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! Devon ! ! ! ! ! ! ! ! !! !! ! ! ! ! ! !! ! ! !! ! ! ! ! ! ! ! ! ! oo ! ! ! ! ! ! ! ! !!! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! !! ! ! ! ! 143 ! ! ! ! ! Land Sales ! ! ! ! ! ! !! ! ! ! ! ! ! ! Kilometers ! ! ! ! ! e ! Ø ! ! ! ! ! ! ! ! ! ! ! ! BB ! ! g ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! d ! ! ! !! ! ! ! ! ! !! ! ! !! ! ! ! ! ! ! ! ! ! !! ! ! !! ! E ! ! ! ! ! ! ! !! ! ! !! ! ! ! t ! ! ! ! ! ! ! ! !! ! ! ! n 2008 2006 ! ! ! ! ! ! ! ! ! ! ! ! ! e ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! m ! ! !! ! ! Q ! ! ! y !! 16652 ! !! ! ! ! ! ! ! ! ! a ! 0 9 4 K ! ! ! ! ! !! ! ! ! = ! ! ! 0 9 4 K ! Ministry of Energy, Mines and ! ! ! ! ! ! b ! ! ! ! ! ! 2007 2005 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! m ! ! ! ! ! ! ! ! ! E ! ! ! ! ! Petroleum Resources ! ! ! ! ! ! ! ! ! a ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! lu ! ! ! ! ! ! !!! ! ! ! K ! ! ! ! ! Resource Development and ! ! !! ! ! ! Upcoming Land Sales ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! Geoscience Branch ! ! ! ! ! ! !! ! ! M ! ! ! ! ! ! ! ! ! ! !! !!!! ! !! U ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! ! ! S ! Fort Nelson ! ! ! ! ! ! April 2008 ! ! ! ! ! ! ! ! ! ! ! !( ! ! ! ! ! ! K ! ! W ! ! ! !! ! ! ! ! ! ! ! ! ! ! A ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! R ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! !! ! ! I ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! !! ! ! 0 9 4 J ! ! ! ! ! ! 0 9 4 !I ! !! Compiled by Warren Walsh, Sara McPhail and Cassandra Lee (Updated March 2008) V 0 9 4 J ! ! ! ! ! 0 9 4 I ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! !! ! ! E ! ! ! !! ! ! ! ! ! ! ! ! ! ! !! R ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ± ! 124°0'0"W 123°0'0"W 122°0'0"W 121°0'0"W

Appendix B

Cross Section: Devonian Shales of the Horn River Basin and Cordova Embayment, Northeast British Columbia

River Evie Keg aie (mm) Caliper -7A9-- W 28) oeAayi te ak veadLwrKgRi Keg Lower and Evie Park, Otter - Analysis Core 12681), (WA b-97-A/94-O-3 0 100 R(gAPI) GR

50 200

100 300

150 Depth 2005 2000 1995 1990 1985 1980 1975 (m)

0 O (wt.%) TOC Rc Eval] [Rock [Baseline] [Terratek]

5

10 0 Porosity H %) (Hg

5

10

0.00000 Permeability

0.00003 (md)

0.00005

0.00008

0.00010 2.2 ukDensity Bulk 2.4 2.6 2.8

300 Rc Eval] [Rock e Members ver [Baseline] 400 Tmax

500

600

1.4 %Ro

2.4

3.4 Mineralogy Plagioclase K-Feldspar Quartz [Terratek] (wt.%) Dolomite Calcite Ankerite Mineralogy K Geoservices] [KT (wt.%) Chlorite Pyrite Clays Depth 6575 6570 6565 6560 6555 6550 6545 6540 6535 6530 6525 6520 6515 6510 6505 6500 6495 6490 6485 6480 6475 (ft) UWI: TD

2165.0m

2150 2125 2100 2075 2050 2025 2000 1975 1950 1925 1900 1875 1850 1825 202/b-097-A/094-O-03/00 WA:

0 100 (mm) Caliper -8D9-- W 1) oeAayi ukaMember Muskwa - Analysis Core 414), (WA C-28-D-94-O-1 R(gAPI) GR

12681

50 200

100 300

150 Depth 1955 1950 1945 (m) 0 O (wt.%) TOC Rc Eval] [Rock [CRMS] 5 10 0 Porosity (%) 5 10 2.2 ukDensity Bulk Rc Eval] [Rock 2.4 (g/cc) [TRA] 2.6 2.8 2165.0 300 400 mxCl.Ro Calc. Tmax

m 500 600 1.4 2.4 ßà 3.4 35661.8 Fe-Dolomite/Ankerite Dolomite Calcite Plagioclase K-Feldspar Quartz Mineralogy (wt.%) Siderite Chlorite Kaolinite Illite Pyrite Depth 6415 6410 6405 6400 6395 6390 6385 6380 (ft)

m UWI:

200/c-028-D/094-O-01/00 WA:

00414 TD

2320.7m ? 2300 2275 2250 2225 2200 2175 2150 2125 2100 2075 2050 2025 2000 1975 1950 1925 1900 1875 1850 2320.7 ßà

m 260.9

m Muskwa SP Otter Park River Evie Keg

EQ

0 100 (mm) Caliper -8D9-- W 06) iealCr nlss-Hr ie Formation River Horn - Analysis Core Sidewall 20563), (WA d-28-D-94-O-1 R(gAPI) GR

50 200

100 300

150 Depth 2000 2200 2125 2100 2075 2050 2025 1975 1950 1925 1900 1875 1850 1825 2175 2150 UWI: (m)

0 TD O (wt.%) TOC

2193.5m

2175 2150 2125 2100 2075 2050 2025 2000 1975 1950 1925 1900 1875 1850 1825 200/d-028-D/094-O-01/00 5

10

0 (%) Porosity WA: [SEMBSE] [Micro]

5

20563

10 Permeability 0.000

0.025 (md)

0.050

0.075

300 Tmax 400

500

600 Mineralogy (wt.%) [CBM] Dolomite Calcite Plagioclase K-Feldspar Quartz Albite Chlorite Illite Kaolinite Pyrite Apatite Mineralogy Anhydrite (wt.%) [CRMS] 2193.5 Depth 7200 7100 7000 6900 6800 6700 6600 6500 6400 6300 6200 6100 6000 (ft)

m ßà 45195.1

m UWI: TD

2456.0m

2450 2425 2400 2375 2350 2325 2300 2275 2250 2225 2200 2175 2150 2125 2100 2075 2050 2025

200/a-047-G/094-P-04/00 WA:

05225 2456.0

m SP

EQ ßà -7G9-- W 25,Cr nlss-Ei Member Evie - Analysis Core 5225), (WA a-47-G-94-P-4 0 100 (mm) Caliper R(gAPI) GR 20418.1

50 200

100 300

150 Depth 2355 2350 2345 2340 2335 2330 (m)

0 O (wt.%) TOC m [Baseline] [Terratek]

5 Slave Point 10 0 Porosity (Hg%) ---4P0 W 1) oeAayi ukaMember Muskwa - Analysis Core 714), (WA a-9-F-94-P-03 0 R(AI ooiy(%) Porosity (gAPI) GR 5 50 UWI: 10 100

0.00000 Permeability 150 Depth

0.00003 2030 2025 2020 (m) 0.00005

200/a-009-F/094-P-03/00

0.00008 0

0.00010 2.2 ukDensity Bulk 5 2.4 (g/cc) 2.6 WA: 10 2.8 Pressure-Decay

0.00000 Permeability

0.00003 (md)

300 TD 00714

0.00005

2123.3m 400 Tmax 0.00008 2100 2075 2050 2025 2000 1975 1950 1925 500 0.00010 2.2 ukDensity Bulk

600 2.4 (g/cc) 1.4 2.6 %Ro 2.8 2.4

3.4 Dolomite Calcite Plagioclase K-Feldspar Quartz Mineralogy (wt.%) Dolomite Calcite Plagioclase K-Feldspar Quartz Mineralogy (wt.%) Barite Clays Pyrite Apatite Hematite Depth 6660 6655 6650 6645 6640 6635 6630 6625 (ft) Gypsum Pyrite Apatite Illite/Mica Depth 2123.3 7725 7720 7715 7710 7705 7700 7695 7690 7685 7680 7675 7670 7665 7660 7655 7650 (ft)

m ßà 47148.6

m UWI:

200/b-049-G/094-P-07/00 River Keg

aie (mm) Caliper ---4P1 W 69,Cr nlss-Ei n oe e ie Members River Keg Lower and Evie - Analysis Core 3679), (WA d-6-H-94-P-10 0 100 Muskwa R(gAPI) GR

50 200 WA: aie (mm) Caliper

100 Member Muskwa - Analysis Core 1279), (WA b-49-G-94-P-7 0 100 300 R(AI O w.)Tmax (wt.%) TOC (gAPI) GR

150 50 200 01279 Depth 2020 2025 2015 2010 2005 2000 (m) 100

300 * *

0 150 1875 1850 1825 1800 1775 1750 1725 Depth O (wt.%) TOC 1820 1815 1810 (m) [Terratek] [CRMS] 5

0 10

0 5 ooiy& Porosity a Filled Gas Porosity (%)

5 10 300 10 rsueDecay Pressure 400 Permeability 0.00000 500 (md)

0.00003 1934.6 600 0.00005 Dolomite Plagioclase K-Feldspar Quartz Fe-Dolomite Mineralogy 0.00008 (wt.%)

0.00010 m 2.2 ukDensity Bulk 2.4 (g/cc) Marcasite Clays Pyrite 2.6 Depth 5970 5965 5960 5955 5950 5945 5940 5935 5930 ßà (ft) 2.8 26558.1 Mineralogy Fe-Dolomite/Ankerite Dolomite Calcite Plagioclase K-Feldspar Quartz (wt.%) Clays Pyrite Depth 6645 6640 6635 6630 6625 6620 6615 6610 6605 6600 6595 6590 6585 6580 6575 6570 6565 6560 (ft)

m UWI: TD

2055.0m ?

2050 2025 2000 1975 1950 1925 1900 1875 1850 1825 1800 1775 1750 1725 1700 200/d-006-H/094-P-10/00 WA:

03679 2055.0

m Appendix C: Corean alysis data for core display wells

Caliper (mm) Quartz Pyrite Illite Bulk Density K-Feldspar 100 200 300 Plagioclase Kaolinite Chlorite TOC (wt.%) (g/cc) Calcite Porosity [TRA] Dolomite Siderite [Rock Eval] GR (gAPI) [Rock Eval] Tmax Calc. Ro Fe-Dolomite/Ankerite [CRMS] (%) 0 5 10 0 5 10 0 50 100 150 Depth 2.2 2.4 2.6 2.8 300 400 500 600 1.4 2.4 3.4 Mineralogy Depth (m) (wt.%) (ft)

1945 6380 6385 6390 6395 Muskwa 1950 6400 6405 6410 1955 6415 C-28-D/94-O-1 (WA 414), Core Analysis - Muskwa Member

Caliper (mm)

100 200 300 TOC (wt.%) Permeability Quartz Calcite Pyrite Tmax [Rock Eval] (md) K-Feldspar Dolomite Clays [Terratek] Porosity Bulk Density [Rock Eval] Plagioclase Ankerite Chlorite GR (gAPI) [Baseline] [Baseline] %Ro (Hg %) Mineralogy Mineralogy

0 2.2 2.4 2.6 2.8 50 100 150 Depth 0 5 10 0 5 10 0.00000 0.00003 0.00005 0.00008 0.00010 300 400 500 600 1.4 2.4 3.4 (wt.%) (wt.%) Depth (m) [Terratek] [KT Geoservices] (ft) 6475 Otter 1975 6480 Park 6485 6490 1980 6495 6500 6505 6510 1985 6515 Evie 6520 6525 1990 6530 6535 6540 1995 6545 6550 6555 Lower 6560 2000 Keg 6565 River 6570 2005 6575 b-97-A/94-O-3 (WA 12681),Core Analysis - Otter Park, Evie, and Lower Keg River members

Pressure-Decay Quartz Barite K-Feldspar Pyrite Permeability Plagioclase Apatite (md) Bulk Density Calcite Hematite GR (gAPI) Porosity (%) (g/cc) Dolomite Clays

0 5 10 2.2 2.4 2.6 2.8 0 50 100 150 Depth 0.00000 0.00003 0.00005 0.00008 0.00010 Mineralogy Depth (m) (wt.%) (ft) 6625 2020 6630 6635 6640 Muskwa 2025 6645 6650 6655 2030 6660 a-9-F/94-P-03 (WA 714), Core Analysis - Muskwa Member

Shale units of the Horn River Basin and Cordova Embayment Caliper (mm) Quartz Apatite

100 200 300 K-Feldspar Gypsum Plagioclase Pyrite TOC (wt.%) Permeability Bulk Density Calcite Illite/Mica Porosity Tmax GR (gAPI) 2330 [Terratek] (g/cc) %Ro Dolomite [Baseline] (Hg%) 2.2 2.4 2.6 2.8 7650 0 50 100 150 Depth 0 5 10 0 5 10 0.00000 0.00003 0.00005 0.00008 0.00010 300 400 500 600 1.4 2.4 3.4 Mineralogy Depth (m) (wt.%) 7655(ft)

2335 7660 7665 7670 7675 2340 7680 Evie 7685 7690 2345 7695 7700 7705 2350 7710 7715 7720 7725 2355 a-47-G/94-P-4 (WA 5225), Core Analysis - Evie Member

Caliper (mm) Quartz Pyrite K-Feldspar Marcasite 100 200 300 Plagioclase Clays Dolomite GR (gAPI) TOC (wt.%) Tmax Fe-Dolomite Mineralogy

0 50 100 150 Depth 0 5 10 300 400 500 600 Depth (m) (wt.%) (ft) 5930 5935 1810 5940 5945 Muskwa 5950 1815 5955 5960 5965 1820 5970 b-49-G/94-P-7 (WA 1279), Core Analysis - Muskwa Member

Caliper (mm) Pressure Decay Quartz Pyrite K-Feldspar Clays 100 200 300 Porosity & Permeability Plagioclase TOC (wt.%) Gas Filled (md) Bulk Density Calcite [Terratek] Porosity Dolomite [CRMS] (g/cc) GR (gAPI) (%) Fe-Dolomite/Ankerite 2.2 2.4 2.6 2.8 0 50 100 150 Depth 0 5 10 0 5 10 0.00000 0.00003 0.00005 0.00008 0.00010 Mineralogy Depth (m) (wt.%) (ft) 6560 2000 6565 6570 6575 2005 6580 6585 Evie 6590 2010 6595 6600 6605 2015 6610 6615 6620 6625 2020 Lower 6630 Keg 6635 River 6640 2025 6645 d-6-H/94-P-10 (WA 3679), Core Analysis - Evie and Lower Keg River Members

Shale units of the Horn River Basin and Cordova Embayment Appendix D: Core Analysis Data for sidewall core wells – summary tables and logs

Well Location d-28-D/94-O-1 d-60-I/94-O-9 WA 20563 5207 Fort Simpson, Muskwa, Otter Muskwa, Otter Park, Cored Units Park, Evie Sulphur/Slave Point, Evie 6086- CoreAnalysis 6086-7124 7667-8031 Depth 7124 Interval (m) 1855-2171.5 2337-2448 Otter Otter Muskwa Evie Muskwa Evie Unit Park Park TOC (%) 1.46-5.61 0.34-2.26 3.46-6.30 2.7-4.09 1.18-5.95 1.88-5.47 Porosity (%) 1.9-6.5 1.6-7.6 1.9-5.3 1.9-8.8 1.3-4.6 1.3-2.99 Quartz 18-67 6.9-69.83 11-66 58-98 10-88 6-73 Calcite 0-75.31 0-75.89 9-85 0-3 0-59 1-72

Key 1.59-40 3-15.61 2-28 0-14.51 0-73 2-13 Core Analysis Data

(wt%) Dolomite

Mineralogy Clay 0-49.17 0-63.88 0-24.45 0-28 0-82 0-36

Quartz Apatite Caliper (mm) K-Feldspar Anhydrite Plagioclase Pyrite 100 200 300 Porosity (%) Permeability Calcite Kaolinite Dolomite Illite [SEMBSE] (md) Albite Chlorite GR (gAPI) TOC (wt.%) [Micro] Tmax Mineralogy Mineralogy

0 50 100 150 0 5 10 0 5 10 0.000 0.025 0.050 0.075 Depth 300 400 500 600 (wt.%) (wt.%) Depth (m) [CBM] [CRMS] (ft) 1825 6000

1850 Fort 6100 Simpson 1875 6200 1900

1925 6300

Muskwa 1950 6400

1975 6500 2000 6600 2025 6700 Otter 2050 Park 2075 6800

2100 6900

2125 7000 2150 Evie 7100 2175

2200 7200 d-28-D-94-O-1 (WA 20563), Sidewall Core Analysis - Horn River Formation

Shale units of the Horn River Basin and Cordova Embayment Caliper (mm) Quartz K-Feldspar Albite

100 200 300 Plagioclase Barite Calcite Pyrite Porosity (%) Permeability Dolomite Illite GR (gAPI) TOC (wt.%) [CRMS, SEMBSE] (md) Tmax [CBM, ambient] Mineralogy Mineralogy Mineralogy

0 50 100 0 10 0 0.00 0.75 1.00

150 5 5 10 0.25 0.50 Depth 300 400 500 600 (wt.%) (wt.%) (wt.%) Depth (m) [Rock Eval] [CRMS] [CBM] (ft) 2325

7650

7675

Muskwa 7700 2350

7725

7750

7775

2375 7800

Otter 7825 Park 7850

2400 7875

7900

7925

7950 2425

7975

Evie 8000

8025

2450 8050 Lower Keg River 8075

d-60-I/94-O-9 (WA 5207), sidewall core analysis - Horn River Formations

Shale units of the Horn River Basin and Cordova Embayment