| 1998-12-30 | 481678 | 42-197-31446 | HUNTER #2 | RATLIFF OPERATING CORP. | DRILL | 9,000 | |
| 1998-12-17 | 479846 | 42-197-31444 | MEHARG UNIT #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 8,500 | |
| 1998-11-04 | 480593 | 42-197-31445 | DIANE #2 | KEY ENERGY OF COLORADO, INC. | DRILL | 9,000 | |
| 1998-09-21 | 479607 | 42-197-30505 | KYLE #3 | FARRELL OIL COMPANY | RECOMP | 4,450 | |
| 1998-09-02 | 479127 | 42-197-31443 | CUNNINGHAM UNIT #1 | RATLIFF OPERATING CORP. | DRILL | 9,000 | |
| 1998-09-02 | 479127 | 42-197-31443 | CUNNINGHAM UNIT #1 | RATLIFF OPERATING CORP. | DRILL | 9,000 | Y |
| 1998-08-31 | 477147 | 42-197-31440 | MCCLELLAN-PHILLIPS #1 | ASHTOLA EXPLORATION COMPANY,INC. | DRILL | 8,500 | |
| 1998-08-12 | 478621 | 42-197-31442 | R & R #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 8,500 | |
| 1998-07-28 | 478322 | 42-197-31270 | CATO #2 | KEY ENERGY OF COLORADO, INC. | RENTR | 9,000 | |
| 1998-07-23 | 478167 | 42-197-31441 | CONDOR-MULKEY #1 | TRIO OPERATING COMPANY, INC. | DRILL | 9,000 | |
| 1998-06-25 | 477338 | 42-197-31010 | WALTHER-LYTLE UNIT #1 | CORDA CORPORATION | RENTR | 8,450 | |
| 1998-06-04 | 476854 | 42-197-31439 | WELLS UNIT #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 8,900 | |
| 1998-05-15 | 476334 | 42-197-31438 | STEPP UNIT #4 | KEY ENERGY OF COLORADO, INC. | DRILL | 8,500 | |
| 1998-04-24 | 475452 | 42-197-31437 | HURST #1 | TRIO OPERATING COMPANY, INC. | DRILL | 8,800 | |
| 1998-04-24 | 475452 | 42-197-31437 | HURST #1 | TRIO OPERATING COMPANY, INC. | DRILL | 8,800 | |
| 1998-04-24 | 475416 | 42-197-31436 | SCHMOKER UNIT #1 | FOREE OIL COMPANY | DRILL | 8,200 | |
| 1998-04-08 | 475134 | 42-197-31276 | HOLMES #7 | KEY ENERGY OF COLORADO, INC. | RENTR | 8,800 | |
| 1998-04-08 | 474875 | 42-197-31435 | TABOR, H. J. #3 | FOREE, R. L. TRUST "A" | DRILL | 8,200 | |
| 1998-03-31 | 474884 | 42-197-31434 | SUMMERLEE 9 #1 | HEIGHTS OPERATING CORPORATION | DRILL | 8,500 | |
| 1998-03-23 | 474654 | 42-197-31324 | TURNER "437" #2H | WILLOW CREEK RESOURCES, INC. | RENTR | 9,000 | Y |
| 1998-03-13 | 474227 | 42-197-31433 | LOVE UNIT #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 9,000 | |
| 1998-03-12 | 474192 | 42-197-30860 | PURSLEY #1 | ASHTOLA EXPLORATION COMPANY,INC. | RENTR | 8,500 | |
| 1998-03-06 | 473842 | 42-197-31432 | HORTON #1 | THOMPSON, RICHARD W. INC. | DRILL | 8,500 | |
| 1998-02-17 | 472333 | 42-197-31428 | SCHMOKER LAMBERT TABOR UNIT #2 | KADANE CORPORATION | DRILL | 8,350 | |
| 1998-02-11 | 473249 | 42-197-31431 | C. E. BOUCHER UNIT #2 | CRAWFORD ENERGY, INCORPORATED | DRILL | 8,500 | |
| 1998-02-09 | 472903 | 42-197-31430 | NICHOLS UNIT #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 9,000 | |
| 1998-01-21 | 472498 | 42-197-31429 | CATO UNIT #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 8,500 | |
| 1998-01-16 | 471785 | 42-197-31427 | LYTLE UNIT #1 | CORDA CORPORATION | DRILL | 8,500 | |
| 1997-12-29 | 471233 | 42-197-31425 | COBURN #1 | RIO PETROLEUM, INC. | DRILL | 8,600 | |
| 1997-12-22 | 471522 | 42-197-31426 | JEFFERY #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 9,000 | |
| 1997-12-11 | 471063 | 42-197-31424 | TRUST, C. E. #1 | CRAWFORD ENERGY, INCORPORATED | DRILL | 8,300 | |
| 1997-12-11 | 471063 | 42-197-31424 | TRUST, C. E. #1 | CRAWFORD ENERGY, INCORPORATED | DRILL | 8,300 | |
| 1997-12-08 | 470996 | 42-197-31402 | JACKSON #3 | KADANE CORPORATION | RECOMP | 8,250 | |
| 1997-12-05 | 470707 | 42-197-31423 | WEST ESTATE #1 | KEY ENERGY OF COLORADO, INC. | DRILL | 9,000 | |
| 1997-11-17 | 470006 | 42-197-31185 | GERALD UNIT #1 | KEY ENERGY OF COLORADO, INC. | RENTR | 8,600 | |
| 1997-11-17 | 470006 | 42-197-31185 | GERALD UNIT #1 | KEY ENERGY OF COLORADO, INC. | RENTR | 8,383 | |
| 1997-11-12 | 470044 | 42-197-31422 | PYEATT #2 | FERGUSON, S. M. JR., INC. | DRILL | 8,500 | |
| 1997-11-12 | 470044 | 42-197-31422 | PYEATT #2 | CRAWFORD ENERGY, INCORPORATED | DRILL | 8,500 | |
| 1997-11-07 | 469844 | 42-197-31421 | NEAL 109 #1 | E.G. OPERATING | DRILL | 8,500 | |
| 1997-11-06 | 469582 | 42-197-31420 | HANNERS #1002 | PRIME WESTERN DEVELOPMENT, INC. | DRILL | 9,000 | |
| 1997-10-10 | 467518 | 42-197-31418 | HURST 2 #2 | ENSERCH EXPLORATION, INC | DRILL | 8,800 | |
| 1997-10-10 | 467393 | 42-197-31417 | GRANGE #1 | ASHTOLA EXPLORATION COMPANY,INC. | DRILL | 8,500 | |
| 1997-10-01 | 468155 | 42-197-31419 | QUINBY #1 | TRIO OPERATING COMPANY, INC. | DRILL | 8,600 | |
| 1997-09-22 | 471713 | 42-197-31358 | LANKFORD #1 | THOMPSON, RICHARD W. INC. | RECLASS | 8,900 | |
| 1997-09-12 | 457525 | 42-197-31403 | ST. GERMAINE #1 | KADANE CORPORATION | DRILL | 8,500 | |
| 1997-08-28 | 466578 | 42-197-31415 | PHILLIPS #1 | CORDA CORPORATION | DRILL | 8,500 | |
| 1997-08-27 | 466792 | 42-197-31081 | CATO 96 #1 | TALON PRODUCTION, INC. | RENTR | 8,000 | |
| 1997-08-27 | 466626 | 42-197-31416 | FD/ALLRED-EVANS HEIRS #7601 | PRIME WESTERN DEVELOPMENT, INC. | DRILL | 9,000 | |
| 1997-08-27 | 466626 | 42-197-31416 | FD/ALLRED-EVANS HEIRS #7601 | PRIME WESTERN DEVELOPMENT, INC. | DRILL | 8,748 | |
| 1997-08-08 | 465787 | 42-197-31414 | ROGERS #1 | FOREE OIL COMPANY | DRILL | 8,200 | |