| 1999-07-02 | 485048 | 42-483-31572 | DABERRY #501 | BRACKEN OPERATING, L.L.C. | DRILL | 12,500 | |
| 1999-07-02 | 485047 | 42-483-31571 | BRYANT #3044 | BRACKEN OPERATING, L.L.C. | DRILL | 12,500 | |
| 1999-07-02 | 485047 | 42-483-31571 | BRYANT #3044 | BRACKEN OPERATING, L.L.C. | DRILL | 12,500 | |
| 1999-06-17 | 485224 | 42-483-31574 | ROB #2 | CAMBRIDGE PRODUCTION, INC. | DRILL | 13,200 | |
| 1999-05-27 | 484828 | 42-483-31570 | FIRESTONE #108 | CABOT OIL & GAS CORPORATION | DRILL | 16,300 | |
| 1999-05-12 | 484428 | 42-483-31569 | RIDGEWAY #1 | CAMBRIDGE PRODUCTION, INC. | DRILL | 13,000 | |
| 1999-04-08 | 483691 | 42-483-31568 | BASIN ROYALTY #103 | CRESCENDO RESOURCES, L.P. | DRILL | 19,000 | |
| 1999-04-08 | 483691 | 42-483-31568 | BASIN ROYALTY #103 | AMOCO PRODUCTION COMPANY | DRILL | 20,358 | |
| 1999-03-24 | 483229 | 42-483-30633 | RICE #5 | PRAIRIE ENERGY COMPANY | RECLASS | 2,256 | |
| 1999-03-22 | 483233 | 42-483-20056 | SHULL #2 | WILDCAT CEMENT CO. | RECLASS | 2,250 | |
| 1999-03-22 | 483232 | 42-483-30574 | MITCHELL #5 | PRAIRIE ENERGY COMPANY | RECLASS | 2,250 | |
| 1999-03-22 | 483231 | 42-483-30661 | RICE #9 | PRAIRIE ENERGY COMPANY | RECLASS | 2,256 | |
| 1999-03-22 | 483228 | 42-483-00566 | NICHOLSON #4 | WILDCAT CEMENT CO. | RECLASS | 2,250 | |
| 1999-03-12 | 482872 | 42-483-31567 | BRYANT #52 #1 | KCS MEDALLION RESOURCES, INC. | DRILL | 12,700 | |
| 1999-03-09 | 482316 | 42-483-31566 | JACKSON, J. #1 | BARRETT RESOURCES CORPORATION | DRILL | 12,100 | |
| 1999-02-02 | 481859 | 42-483-31480 | TRUMAN ZYBACK 16 #1 | DEVON ENERGY CORPORATION(NEVADA) | FLD-XFR | 15,610 | |
| 1999-01-27 | 482290 | 42-483-31565 | THRASHER #1 | BARRETT RESOURCES CORPORATION | DRILL | 12,600 | |
| 1999-01-22 | 482177 | 42-483-31564 | O'BRIEN, J. G. #1021 | CRESCENDO RESOURCES, L.P. | DRILL | 16,700 | |
| 1998-12-31 | 481863 | 42-483-31187 | HATHAWAY #1 | CAMBRIDGE PRODUCTION, INC. | RENTR | 14,300 | |
| 1998-12-29 | 481804 | 42-483-31563 | DUNN #3 | PHILLIPS PETROLEUM COMPANY | DRILL | 13,300 | |
| 1998-12-29 | 480441 | 42-483-31555 | COLTHARP #3051 | BRACKEN OPERATING, L.L.C. | DRILL | 12,700 | |
| 1998-12-11 | 481249 | 42-483-31562 | HAYES, EFFIE 18 #1 | DEVON ENERGY CORPORATION(NEVADA) | DRILL | 15,700 | |
| 1998-12-04 | 480582 | 42-483-31556 | HUNTER #3034 | PHILCON DEVELOPMENT CO. | DRILL | 14,800 | |
| 1998-12-04 | 480582 | 42-483-31556 | HUNTER #3 | PHILCON DEVELOPMENT CO. | DRILL | 14,800 | |
| 1998-12-01 | 481086 | 42-483-31560 | PARKS 1 #2 | DEVON ENERGY CORPORATION(NEVADA) | DRILL | 16,200 | |
| 1998-11-24 | 481131 | 42-483-31561 | CHANDLER #5 | APACHE CORPORATION | DRILL | 15,800 | |
| 1998-11-23 | 481043 | 42-483-31559 | FOWLSTON ESTATE "A" #1020 | CRESCENDO RESOURCES, L.P. | DRILL | 16,500 | |
| 1998-11-16 | 480920 | 42-483-31558 | W. R. HEFLEY GAS UNIT #2 | ENRON OIL & GAS COMPANY | DRILL | 6,000 | |
| 1998-11-10 | 480667 | 42-483-31557 | FARMER'S UNION #1 | CAMBRIDGE PRODUCTION, INC. | DRILL | 12,600 | |
| 1998-10-19 | 480253 | 42-483-31554 | HUNTER 65 #1 | BRIGHAM OIL & GAS, L.P. | DRILL | 12,000 | |
| 1998-10-15 | 480185 | 42-483-31553 | BRITT RANCH "G" 44 #3 | TESORO E&P COMPANY, L.P. | DRILL | 13,200 | |
| 1998-10-15 | 480184 | 42-483-31552 | BRITT RANCH "C" 35 #4 | TESORO E&P COMPANY, L.P. | DRILL | 13,200 | |
| 1998-10-15 | 480183 | 42-483-31551 | BRITT RANCH 36 #4 | TESORO E&P COMPANY, L.P. | DRILL | 13,200 | |
| 1998-10-09 | 479896 | 42-483-30054 | BAILEY "A" #1 | RIO PETROLEUM, INC. | RENTR | 11,875 | |
| 1998-09-11 | 479402 | 42-483-31550 | BRITT RANCH 36 #3 | TESORO E&P COMPANY, L.P. | DRILL | 13,200 | |
| 1998-08-27 | 479061 | 42-483-31549 | ROSS 8 #1 | BRIGHAM OIL & GAS, L.P. | DRILL | 9,100 | |
| 1998-08-21 | 478919 | 42-483-31548 | DABERRY #501 | CHEVRON U. S. A. INC. | DRILL | 14,600 | |
| 1998-08-07 | 478562 | 42-483-31589 | LOHBERGER #1 | SAMEDAN OIL CORPORATION | DRILL | 8,700 | |
| 1998-08-06 | 478555 | 42-483-31546 | TAYLOR #1 | MYRIAD RESOURCES CORPORATION | DRILL | 8,000 | |
| 1998-08-06 | 478555 | 42-483-31546 | TAYLOR #1 | MYRIAD RESOURCES CORPORATION | DRILL | 8,000 | |
| 1998-07-16 | 478000 | 42-483-31545 | CHAPMAN 4 #1 | BRIGHAM OIL & GAS, L.P. | DRILL | 8,900 | |
| 1998-07-06 | 477497 | 42-483-30145 | LEDBETTER, RUTH #1 | CHEVRON U. S. A. INC. | FLD-XFR | 21,139 | |
| 1998-06-30 | 477468 | 42-483-31544 | HALL-MCCOY #2024 | CRESCENDO RESOURCES, L.P. | DRILL | 16,300 | |
| 1998-06-30 | 477468 | 42-483-31544 | HALL-MCCOY #2024 | CRESCENDO RESOURCES, L.P. | DRILL | 16,300 | |
| 1998-06-26 | 477475 | 42-483-31543 | BRITT RANCH -B- #3045 | SHERIDAN ENERGY,INC. | DRILL | 13,200 | |
| 1998-06-17 | 477041 | 42-483-81125 | BRADSHAW #6 | BLAKEMORE, INC. | RECLASS | 2,230 | |
| 1998-06-03 | 476778 | 42-483-31541 | AMELIA UNIT 31 #1 | BRIGHAM OIL & GAS, L.P. | DRILL | 17,000 | |
| 1998-06-02 | 476807 | 42-483-31542 | FEDERAL LIFE INSURANCE #2 | GRUY PETROLEUM MANAGEMENT CO. | DRILL | 4,000 | |
| 1998-06-02 | 476807 | 42-483-31542 | FEDERAL LIFE INSURANCE #2 | GRUY PETROLEUM MANAGEMENT CO. | DRILL | 4,000 | |
| 1998-06-02 | 476807 | 42-483-31542 | FEDERAL LIFE INSURANCE #2 | GRUY PETROLEUM MANAGEMENT CO. | DRILL | 4,000 | |