| 484908Amendment | Jun 1, 1999 | Jun 1, 1999 | Key Energy of Colorado, Inc. | Young #1 | 8,500 | 19731448 |
| 482214 | Jan 22, 1999 | Jan 22, 1999 | Corda Corporation | Minshew Unit #1X | 8,600 | 19731447 |
| 481678 | Dec 30, 1998 | Dec 30, 1998 | Ratliff Operating Corp. | Hunter #2 | 9,000 | 19731446 |
| 479846 | Dec 17, 1998 | Dec 17, 1998 | Key Energy of Colorado, Inc. | Meharg Unit #1 | 8,500 | 19731444 |
| 480593 | Nov 4, 1998 | Nov 4, 1998 | Key Energy of Colorado, Inc. | Diane #2 | 9,000 | 19731445 |
| 479607 | Sep 21, 1998 | Sep 21, 1998 | Farrell Oil Company | Kyle #3 | 4,450 | 19730505 |
| 479127 | Sep 2, 1998 | Sep 2, 1998 | Ratliff Operating Corp. | Cunningham Unit #1 | 9,000 | 19731443 |
| 479127Amendment | Sep 2, 1998 | Sep 2, 1998 | Ratliff Operating Corp. | Cunningham Unit #1H | 9,000 | 19731443 |
| 477147 | Aug 31, 1998 | Aug 31, 1998 | Ashtola Exploration Company,inc. | McClellan-Phillips #1 | 8,500 | 19731440 |
| 478621 | Aug 12, 1998 | Aug 12, 1998 | Key Energy of Colorado, Inc. | R & R #1 | 8,500 | 19731442 |
| 478322 | Jul 28, 1998 | Jul 28, 1998 | Key Energy of Colorado, Inc. | Cato #2 | 9,000 | 19731270 |
| 478167 | Jul 23, 1998 | Jul 23, 1998 | Trio Operating Company, Inc. | Condor-Mulkey #1 | 9,000 | 19731441 |
| 477338 | Jun 25, 1998 | Jun 25, 1998 | Corda Corporation | Walther-Lytle Unit #1 | 8,450 | 19731010 |
| 476854 | Jun 4, 1998 | Jun 4, 1998 | Key Energy of Colorado, Inc. | Wells Unit #1 | 8,900 | 19731439 |
| 476334 | May 15, 1998 | May 15, 1998 | Key Energy of Colorado, Inc. | Stepp Unit #4 | 8,500 | 19731438 |
| 475452 | Apr 24, 1998 | Apr 24, 1998 | Trio Operating Company, Inc. | Hurst #1 | 8,800 | 19731437 |
| 475452Amendment | Apr 24, 1998 | Apr 24, 1998 | Trio Operating Company, Inc. | Hurst #1 | 8,800 | 19731437 |
| 475416 | Apr 24, 1998 | Apr 24, 1998 | Foree Oil Company | Schmoker Unit #1 | 8,200 | 19731436 |
| 475134 | Apr 8, 1998 | Apr 8, 1998 | Key Energy of Colorado, Inc. | Holmes #7 | 8,800 | 19731276 |
| 474875 | Apr 8, 1998 | Apr 8, 1998 | Foree, R. L. Trust "A" | Tabor, H. J. #3 | 8,200 | 19731435 |
| 474884 | Mar 31, 1998 | Mar 31, 1998 | Heights Operating Corporation | Summerlee 9 #1 | 8,500 | 19731434 |
| 474654 | Mar 23, 1998 | Mar 23, 1998 | Willow Creek Resources, Inc. | Turner "437" #2HH | 9,000 | 19731324 |
| 474227 | Mar 13, 1998 | Mar 13, 1998 | Key Energy of Colorado, Inc. | Love Unit #1 | 9,000 | 19731433 |
| 474192 | Mar 12, 1998 | Mar 12, 1998 | Ashtola Exploration Company,inc. | Pursley #1 | 8,500 | 19730860 |
| 473842 | Mar 6, 1998 | Mar 6, 1998 | Thompson, Richard W. Inc. | Horton #1 | 8,500 | 19731432 |
| 472333 | Feb 17, 1998 | Feb 17, 1998 | Kadane Corporation | Schmoker Lambert Tabor Unit #2 | 8,350 | 19731428 |
| 473249 | Feb 11, 1998 | Feb 11, 1998 | Crawford Energy, Incorporated | C. E. Boucher Unit #2 | 8,500 | 19731431 |
| 472903 | Feb 9, 1998 | Feb 9, 1998 | Key Energy of Colorado, Inc. | Nichols Unit #1 | 9,000 | 19731430 |
| 472498 | Jan 21, 1998 | Jan 21, 1998 | Key Energy of Colorado, Inc. | Cato Unit #1 | 8,500 | 19731429 |
| 471785 | Jan 16, 1998 | Jan 16, 1998 | Corda Corporation | Lytle Unit #1 | 8,500 | 19731427 |
| 471233 | Dec 29, 1997 | Dec 29, 1997 | Rio Petroleum, Inc. | Coburn #1 | 8,600 | 19731425 |
| 471522 | Dec 22, 1997 | Dec 22, 1997 | Key Energy of Colorado, Inc. | Jeffery #1 | 9,000 | 19731426 |
| 471063 | Dec 11, 1997 | Dec 11, 1997 | Crawford Energy, Incorporated | Trust, C. E. #1 | 8,300 | 19731424 |
| 471063Amendment | Dec 11, 1997 | Dec 11, 1997 | Crawford Energy, Incorporated | Trust, C. E. #1 | 8,300 | 19731424 |
| 470996 | Dec 8, 1997 | Dec 8, 1997 | Kadane Corporation | Jackson #3 | 8,250 | 19731402 |
| 470707 | Dec 5, 1997 | Dec 5, 1997 | Key Energy of Colorado, Inc. | West Estate #1 | 9,000 | 19731423 |
| 470006 | Nov 17, 1997 | Nov 17, 1997 | Key Energy of Colorado, Inc. | Gerald Unit #1 | 8,600 | 19731185 |
| 470006Amendment | Nov 17, 1997 | Nov 17, 1997 | Key Energy of Colorado, Inc. | Gerald Unit #1 | 8,383 | 19731185 |
| 470044 | Nov 12, 1997 | Nov 12, 1997 | Ferguson, S. M. Jr., Inc. | Pyeatt #2 | 8,500 | 19731422 |
| 470044Amendment | Nov 12, 1997 | Nov 12, 1997 | Crawford Energy, Incorporated | Pyeatt #2 | 8,500 | 19731422 |
| 469844 | Nov 7, 1997 | Nov 7, 1997 | E.G. Operating | Neal 109 #1 | 8,500 | 19731421 |
| 469582 | Nov 6, 1997 | Nov 6, 1997 | Prime Western Development, Inc. | Hanners #1002 | 9,000 | 19731420 |
| 467518 | Oct 10, 1997 | Oct 10, 1997 | Enserch Exploration, Inc | Hurst 2 #2 | 8,800 | 19731418 |
| 467393 | Oct 10, 1997 | Oct 10, 1997 | Ashtola Exploration Company,inc. | Grange #1 | 8,500 | 19731417 |
| 468155 | Oct 1, 1997 | Oct 1, 1997 | Trio Operating Company, Inc. | Quinby #1 | 8,600 | 19731419 |
| 471713 | Sep 22, 1997 | Sep 22, 1997 | Thompson, Richard W. Inc. | Lankford #1 | 8,900 | 19731358 |
| 457525 | Sep 12, 1997 | Sep 12, 1997 | Kadane Corporation | St. Germaine #1 | 8,500 | 19731403 |
| 466578 | Aug 28, 1997 | Aug 28, 1997 | Corda Corporation | Phillips #1 | 8,500 | 19731415 |
| 466792 | Aug 27, 1997 | Aug 27, 1997 | Talon Production, Inc. | Cato 96 #1 | 8,000 | 19731081 |
| 466626 | Aug 27, 1997 | Aug 27, 1997 | Prime Western Development, Inc. | FD/Allred-Evans Heirs #7601 | 9,000 | 19731416 |
| 466626Amendment | Aug 27, 1997 | Aug 27, 1997 | Prime Western Development, Inc. | FD/Allred-Evans Heirs #7601 | 8,748 | 19731416 |
| 465787 | Aug 8, 1997 | Aug 8, 1997 | Foree Oil Company | Rogers #1 | 8,200 | 19731414 |
| 464896 | Jul 23, 1997 | Jul 23, 1997 | Corda Corporation | McClellan, Joe #1 | 8,400 | 19731413 |
| 464896Amendment | Jul 23, 1997 | Jul 23, 1997 | Corda Corporation | McClellan, Joe #1 | 8,400 | 19731413 |
| 464478 | Jul 2, 1997 | Jul 2, 1997 | Enserch Exploration, Inc | Dodson Subdivision "P" #1 | 7,600 | 19731412 |
| 462355 | May 13, 1997 | May 13, 1997 | Trio Operating Company, Inc. | Barnes-Judd Unit #1 | 8,800 | 19731406 |
| 461543 | May 1, 1997 | May 1, 1997 | E.G. Operating | BROWN4 #4 | 8,430 | 19730461 |
| 461280 | Apr 17, 1997 | Apr 17, 1997 | Rio Petroleum, Inc. | Loveless "J" #1 | 8,600 | 19731411 |
| 460238 | Mar 21, 1997 | Mar 21, 1997 | Titan Resources I, Inc. | Smith, E. R. #1129 | 9,500 | 19730892 |
| 459889 | Mar 18, 1997 | Mar 18, 1997 | Ashtola Exploration Company,inc. | Holcomb "a" Unit #1 | 8,500 | 19731410 |
| 459726 | Mar 11, 1997 | Mar 11, 1997 | Foree Oil Company | Brown 51 #1 | 8,300 | 19731409 |
| 459726Amendment | Mar 11, 1997 | Mar 11, 1997 | Foree Oil Company | Brown 51 #1 | 8,300 | 19731409 |
| 459514 | Mar 10, 1997 | Mar 10, 1997 | Prime Western Development, Inc. | Hatcher, Ruth #9501A | 9,000 | 19731408 |
| 459526 | Mar 6, 1997 | Mar 6, 1997 | Talon Production, Inc. | Neal #1 | 8,500 | 19731407 |
| 459378 | Mar 3, 1997 | Mar 3, 1997 | Trio Operating Company, Inc. | Barnes-Judd Unit #1 | 8,800 | 19731406 |
| 458676 | Feb 14, 1997 | Feb 14, 1997 | Geonatural Resources, Inc. | Holcomb "101" #1 | 6,000 | 19731405 |
| 458566 | Feb 13, 1997 | Feb 13, 1997 | Enserch Exploration, Inc | Wilson "201" Unit #1 | 8,800 | 19731404 |
| 457042 | Jan 6, 1997 | Jan 6, 1997 | Kadane Corporation | Jackson #3 | 8,400 | 19731402 |
| 455817 | Dec 2, 1996 | Dec 2, 1996 | Foree Oil Company | Brown #1 | 8,500 | 19731401 |
| 455520 | Nov 26, 1996 | Nov 26, 1996 | Prime Western Development, Inc. | Hatcher, Ruth #9502 | 9,000 | 19731400 |
| 454469 | Nov 21, 1996 | Nov 21, 1996 | Enserch Exploration, Inc | Thorp 19 #1 | 9,000 | 19731398 |
| 454469Amendment | Nov 21, 1996 | Nov 21, 1996 | Enserch Exploration, Inc | Thorp 19 #1 | 9,000 | 19731398 |
| 453648 | Nov 7, 1996 | Nov 7, 1996 | Enserch Exploration, Inc | Evans "74" ST1 #2 | 8,700 | 19731150 |
| 454830 | Nov 6, 1996 | Nov 6, 1996 | Trio Operating Company, Inc. | Fowler #1 | 8,500 | 19731399 |
| 454135 | Oct 21, 1996 | Oct 21, 1996 | H & S Production, Inc. | Parker-Johnson Unit #1 | 9,000 | 19731397 |
| 453795 | Oct 16, 1996 | Oct 16, 1996 | Talon Production, Inc. | Bell #1 | 8,500 | 19731396 |
| 453833 | Oct 14, 1996 | Oct 14, 1996 | Enserch Exploration, Inc | Stepp 110 #3 | 8,950 | 19731395 |
| 453253 | Sep 30, 1996 | Sep 30, 1996 | Foree Oil Company | Tabor 55 Unit #1 | 8,500 | 19731394 |
| 451773 | Aug 21, 1996 | Aug 21, 1996 | Enserch Exploration, Inc | McMichael 59 #1 | 8,750 | 19731393 |
| 451773Amendment | Aug 21, 1996 | Aug 21, 1996 | Enserch Exploration, Inc | McMichael 59 #1 | 8,750 | 19731393 |
| 451261 | Aug 8, 1996 | Aug 8, 1996 | Baltic Royalty Corp. | Boyles #5 | 8,350 | 19731392 |
| 450357 | Aug 1, 1996 | Aug 1, 1996 | Trio Operating Company, Inc. | Boyles #5 | 8,350 | 19731391 |
| 450909 | Jul 31, 1996 | Jul 31, 1996 | Ratliff Operating Corp. | Cunningham #3 | 6,000 | 19731390 |
| 450663 | Jul 24, 1996 | Jul 24, 1996 | Trio Operating Company, Inc. | Coolibah #1 | 8,500 | 19731389 |
| 450543 | Jul 19, 1996 | Jul 19, 1996 | H & S Production, Inc. | Gilliam-Hanners #1 | 9,000 | 19731387 |
| 450309 | Jul 19, 1996 | Jul 19, 1996 | Trio Operating Company, Inc. | Brigham-Stermer #1 | 8,500 | 19731386 |
| 450232 | Jul 11, 1996 | Jul 11, 1996 | Enserch Exploration, Inc | Love "20" ST1 #3 | 9,000 | 19730567 |
| 450131 | Jul 9, 1996 | Jul 9, 1996 | Ozark Exploration, Inc. | Moffett 34 #1 | 8,500 | 19731385 |
| 450131Amendment | Jul 9, 1996 | Jul 9, 1996 | Ozark Exploration, Inc. | Moffett 34 #1 | 8,017 | 19731385 |
| 449742 | Jun 26, 1996 | Jun 26, 1996 | Enserch Exploration, Inc | Bottoms "11" St 1 #1 | 8,700 | 19730833 |
| 449742Amendment | Jun 26, 1996 | Jun 26, 1996 | Enserch Exploration, Inc | Bottoms "11" St 1 #1 | 8,700 | 19730833 |
| 449492 | Jun 20, 1996 | Jun 20, 1996 | H & S Production, Inc. | Hanners #3 | 9,000 | 19731384 |
| 449350 | Jun 20, 1996 | Jun 20, 1996 | Ratliff Operating Corp. | Rogers #1 | 8,700 | 19731383 |
| 449051 | Jun 13, 1996 | Jun 13, 1996 | E.G. Operating | Medicine Mounds 51 #1 | 9,000 | 19731382 |
| 449055 | Jun 7, 1996 | Jun 7, 1996 | Enserch Exploration, Inc | Dockery Unit "52" #1 | 8,700 | 19731381 |
| 448904 | Jun 5, 1996 | Jun 5, 1996 | Trio Operating Company, Inc. | Mertink "A" #1 | 8,400 | 19731380 |
| 448044 | May 16, 1996 | May 16, 1996 | Crawford Energy, Incorporated | Boucher #1 | 8,300 | 19731378 |
| 448126 | May 14, 1996 | May 14, 1996 | Enserch Exploration, Inc | Long "398" A #5 | 8,450 | 19731379 |
| 447607 | May 1, 1996 | May 1, 1996 | Crawford Energy, Incorporated | Barnfield-Reynolds #1 | 8,300 | 19731377 |
| 447021 | Apr 18, 1996 | Apr 18, 1996 | Farrell Oil Company | Self A #3 | 4,360 | 19731376 |