Charles A. Brister provided geosteering services for over 50 horizontal wells drilled by Continental Resources, Inc. across North Dakota. The wells targeted multiple formations including the Bakken and Three Forks formations in McKenzie, Mountrail, Williams, Billings, and Dunn Counties. Geosteering was required to accurately place the wellbores to maximize resource recovery from the shale reservoirs while avoiding drilling hazards.

1. Summary of Geosteering Services performed for Continental Resources, Inc. by Charles A. Brister
Muri 1-27H API #: 33-053-03084 McKenzie County, North Dakota Total Depth: 20595
Kummer 1-31H API#: 33-053-02957 McKenzie County, North Dakota Total Depth: 20,545
Bohmbach 2-35H API#: 33-053-03144 McKenzie County, North Dakota Total Depth: 20445
Bailey 1-24H API#: 33-053-02964 McKenzie County, North Dakota Total Depth: 20218
Norman 1-9H API#: 33-053-03041 McKenzie County, North Dakota Total Depth: 20462
Ravin 1-1H API#: 33-053-02964 McKenzie County, North Dakota Total Depth: 20340
Meldahl 1-23H API#: 33-053-03100 McKenzie County, North Dakota Total Depth: 20190
Vachal 1-27H API#: 33-061-01453 Mountrail County, North Dakota Total Depth: 19724
Rehak 1-25H API#: 33-061-01452 Montrail County, North Dakota Total Depth: 20572
Cheyenne 1-4H API#: 33-105-02155 Williams County, North Dakota Total Depth: 20700
Vachal 2-27H API#: 33-061-01739 Mountrail County, North Dakota Total Depth: 20300
Mack 3-2H API#: 33-053-03539 McKenzie County, North Dakota Total Depth: 15955
Mack 4-2H API#: 33-053-03673 McKenzie County, North Dakota Total Depth: 16192
Rehak 2-25H API#: 33-061-01839 Mountrail County, North Dakota Total Depth: 20388
Quale 1-1H API#: 33-053-03193 McKenzie County, North Dakota Total Depth: 20456
Boulder 1-4H API#: 33-053-03773 McKenzie County, North Dakota Total Depth: 21610
Brooks 1-4 H API#: 33-053-03903 McKenzie County, North Dakota Total Depth: 20675
Pojorlie 21-2-1H API#: 33-053-03872 McKenzie County, North Dakota Total Depth: 21210
Morison 1-14 H API#: 33-053-03913 McKenzie County, North Dakota Total Depth: 21069
Proch 1-7H API#: 33-007-01728 Billings County, North Dakota Total Depth: 20965
Narvik 1-35H API#: 33-007-01732 Billings County, North Dakota Total Depth: 20571
Missoula 2-21H API#: 33-053-04242 McKenzie County, North Dakota Total Depth: 20724
Missoula 3-21H API#: 33-053-04243 McKenzie County, North Dakota Total Depth: 20891
Missoula 6-21H API#: 33-053-04258 McKenzie County, North Dakota Total Depth: 21209
Missoula 7-21H API#: 33-053-04257 McKenzie County, North Dakota Total Depth: 21352
Missoula 4-21H API#: 33-053-04260 McKenzie County, North Dakota Total Depth: 21074
Missoula 5-21H API#: 33-053-04259 McKenzie County, North Dakota Total Depth: 20910

2. Hawkinson 14-22H 2 API#: 33-025-02007 Dunn County, North Dakota Total Depth: 20838
Hawkinson 13-22H API#: 33-025-02006 Dunn County, North Dakota Total Depth: 20837
Hawkinson 12-22H 3 API#: 33-025-01986 Dunn County, North Dakota Total Depth: 21045
Harms 1-32H API#: 33-053-04099 McKenzie County, North Dakota Total Depth: 20368
Harms 2-32H API#: 33-053-04098 McKenzie County, North Dakota Total Depth: 20375
Rollefstad 9-3H API#: 33-053-04728 McKenzie County, North Dakota Total Depth: 20745
Rollefstad Federal 10-3H2 API#: 33-053-04729 McKenzie County, North Dakota Total Depth: 20745
Cuskelly 2-7H API#: 33-025-01580 McKenzie County, North Dakota Total Depth: 21232
Colter 6-14H2 API#: 33-025-02318 Dunn County, North Dakota Total Depth: 22791
Mack 13-2H3 API#: 33-053-05342 McKenzie County, North Dakota Total Depth: 16375
Mack 12-2H2 API#: 33-053-05343 McKenzie County, North Dakota Total Depth: 16059
Mack 11-2H1 API#:33-053-05344 McKenzie County, North Dakota Total Depth: 15977
Olson 4-8H1 API#: 33-053-05892 McKenzie County, North Dakota Total Depth: 20233
Olson 3-8H API#: 33-053-05891 McKenzie County, North Dakota Total Depth: 20217
Brooks 3-4H API#: 33-053-06097 McKenzie County, North Dakota Total Depth: 21023
Brooks 2-4H1 API#: 33-053-06095 McKenzie County, North Dakota Total Depth: 20409
Kennedy 4-31H1 API#: 33-053-06176 McKenzie County, North Dakota Total Depth: 21435
Kennedy 3-31H API#: 33-053-06177 McKenzie County, North Dakota Total Depth: 21292
Boulder 2-4H API#: 33-053-06554 McKenzie County, North Dakota Total Depth: 21547
Boulder 3-4H1 API#: 33-053-06555 McKenzie County, North Dakota Total Depth: 21600