| 524282Amendment | Oct 7, 2002 | Oct 7, 2002 | Inland Ocean, Inc. | Payne #1 | 8,700 | 19731514 |
| 524282Amendment | Oct 7, 2002 | Oct 7, 2002 | Inland Ocean, Inc. | Payne #1 | 8,700 | 19731514 |
| 521774 | Sep 13, 2002 | Sep 13, 2002 | Decleva, Paul | Cato #11 | 8,000 | 19731509 |
| 523418 | Sep 5, 2002 | Sep 5, 2002 | Gruy Petroleum Management Co. | Summerlee #1 | 8,800 | 19731513 |
| 522781 | Aug 14, 2002 | Aug 14, 2002 | Key Energy of Colorado, Inc. | Haynes Unit #1 | 9,000 | 19731512 |
| 522781Amendment | Aug 14, 2002 | Aug 14, 2002 | Key Energy of Colorado, Inc. | Haynes Unit #1 | 9,000 | 19731512 |
| 522631 | Aug 8, 2002 | Aug 8, 2002 | Key Energy of Colorado, Inc. | Cato "B" #1HH | 10,550 | 19730965 |
| 522246 | Jul 29, 2002 | Jul 29, 2002 | Dry Fork Production Co | Key-Holmes #1 | 7,600 | 19731511 |
| 522053 | Jul 23, 2002 | Jul 23, 2002 | Key Energy of Colorado, Inc. | Hurst #5 | 9,000 | 19731489 |
| 522053Amendment | Jul 23, 2002 | Jul 23, 2002 | Key Energy of Colorado, Inc. | Hurst #5HH | 9,000 | 19731489 |
| 522005 | Jul 23, 2002 | Jul 23, 2002 | Patton, E. N. Oil Co., Inc. | Holcomb #1B | 9,000 | 19731510 |
| 521622 | Jul 8, 2002 | Jul 8, 2002 | Key Energy of Colorado, Inc. | Mc Nabb #5HH | 10,250 | 19731508 |
| 521622Amendment | Jul 8, 2002 | Jul 8, 2002 | Key Energy of Colorado, Inc. | Mc Nabb #5HH | 10,250 | 19731508 |
| 521393 | Jun 26, 2002 | Jun 26, 2002 | Key Energy of Colorado, Inc. | Hurst #11HH | 9,000 | 19731338 |
| 520962 | Jun 13, 2002 | Jun 13, 2002 | Corda Corporation | Southern Cotton #1 | 8,660 | 19731507 |
| 520356 | May 24, 2002 | May 24, 2002 | Key Energy of Colorado, Inc. | Judd #2H | 8,500 | 19730938 |
| 520165 | May 22, 2002 | May 22, 2002 | Masada Oil & Gas | Loveless #1 | 1,000 | 19731505 |
| 519681 | May 3, 2002 | May 3, 2002 | Key Energy of Colorado, Inc. | Turner Unit #1 | 9,300 | 19731504 |
| 519681Amendment | May 3, 2002 | May 3, 2002 | Key Energy of Colorado, Inc. | Turner Unit #1H | 9,300 | 19731504 |
| 519681Amendment | May 3, 2002 | May 3, 2002 | Key Energy of Colorado, Inc. | Turner Unit #1HH | 9,300 | 19731504 |
| 519253 | Apr 25, 2002 | Apr 25, 2002 | Foree Oil Company | Roberson #1 | 5,750 | 19731503 |
| 519405 | Apr 24, 2002 | Apr 24, 2002 | Royalty Resources, L.L.C. | Warrior Hollow Unit #1HH | 8,140 | 19730801 |
| 517288 | Feb 4, 2002 | Feb 4, 2002 | Antle Operating, Inc. | Hunter Unit #1 | 8,800 | 19731502 |
| 514986 | Nov 1, 2001 | Nov 1, 2001 | Key Energy of Colorado, Inc. | Hurst #2HH | 9,000 | 19731313 |
| 514986Amendment | Nov 1, 2001 | Nov 1, 2001 | Key Energy of Colorado, Inc. | Hurst #2HH | 9,000 | 19731313 |
| 514769 | Oct 25, 2001 | Oct 25, 2001 | Key Energy of Colorado, Inc. | Holmes "284" #4ST | 9,000 | 19731280 |
| 513822 | Sep 21, 2001 | Sep 21, 2001 | Key Energy of Colorado, Inc. | McNabb #4HH | 10,000 | 19731470 |
| 513301 | Sep 4, 2001 | Sep 4, 2001 | 3-T Exploration, Inc. | Conley Unit #1 | 8,600 | 19731501 |
| 513104 | Aug 29, 2001 | Aug 29, 2001 | Corda Corporation | Word #5 | 8,400 | 19731500 |
| 512523 | Aug 13, 2001 | Aug 13, 2001 | Rio Petroleum, Inc. | Prince #1 | 8,800 | 19731499 |
| 511762 | Jul 27, 2001 | Jul 27, 2001 | Corda Corporation | Diane #1 | 8,300 | 19731498 |
| 510697 | Jul 23, 2001 | Jul 23, 2001 | Key Energy of Colorado, Inc. | Hurst #3 | 8,500 | 19731479 |
| 510273 | Jun 15, 2001 | Jun 15, 2001 | Trio Operating Company, Inc. | Jackson, John C. #1 | 8,700 | 19731497 |
| 508726 | Jun 11, 2001 | Jun 11, 2001 | Belco Energy Corp. | McClellan #1 | 9,000 | 19731496 |
| 509128 | May 17, 2001 | May 17, 2001 | Key Energy of Colorado, Inc. | Nichols Unit #1 | 9,000 | 19731430 |
| 508497 | May 15, 2001 | May 15, 2001 | Rio Petroleum, Inc. | Jeffrey #1 | 8,800 | 19731495 |
| 508258 | Apr 27, 2001 | Apr 27, 2001 | Belco Energy Corp. | Young #1 | 9,000 | 19731494 |
| 508255 | Apr 27, 2001 | Apr 27, 2001 | Belco Energy Corp. | McNeese #1 | 9,000 | 19731493 |
| 508228 | Apr 26, 2001 | Apr 26, 2001 | Corda Corporation | Word #4 | 8,400 | 19731492 |
| 508106 | Apr 23, 2001 | Apr 23, 2001 | Rio Petroleum, Inc. | Loveless-Langford #3HT | 8,800 | 19730865 |
| 504753 | Feb 5, 2001 | Feb 5, 2001 | Thompson, Richard W. Inc. | Hanners #3 | 9,000 | 19731384 |
| 504515 | Jan 26, 2001 | Jan 26, 2001 | Foree Oil Company | Cato #1 | 7,200 | 19731491 |
| 503225 | Jan 18, 2001 | Jan 18, 2001 | Mid-Continent Oil & Gas, Inc. | Greene #1X | 8,500 | 19731490 |
| 502825 | Dec 8, 2000 | Dec 8, 2000 | Key Energy of Colorado, Inc. | Hurst #5 | 9,000 | 19731489 |
| 502038 | Dec 4, 2000 | Dec 4, 2000 | Trio Operating Company, Inc. | Palaura-Horse Farm Unit #1 | 8,700 | 19731487 |
| 502038Amendment | Dec 4, 2000 | Dec 4, 2000 | Trio Operating Company, Inc. | Palaura-Horse Farm Unit #1 | 8,700 | 19731487 |
| 502038Amendment | Dec 4, 2000 | Dec 4, 2000 | Trio Operating Company, Inc. | Palaura-Horse Farm Unit #1 | 8,600 | 19731487 |
| 502047 | Nov 22, 2000 | Nov 22, 2000 | Cet Energy Corporation | Morgan-Nicholson, John H. #1A | 8,200 | 19731488 |
| 501791 | Nov 14, 2000 | Nov 14, 2000 | Menasco, J. | Turner "434" #1 | 7,847 | 19730691 |
| 501516 | Nov 2, 2000 | Nov 2, 2000 | Key Energy of Colorado, Inc. | Hurst #4 | 9,000 | 19730453 |
| 501516Amendment | Nov 2, 2000 | Nov 2, 2000 | Key Energy of Colorado, Inc. | Hurst #4 | 9,000 | 19730453 |
| 501143 | Oct 27, 2000 | Oct 27, 2000 | Lewis Operating Company | McNabb #3 | 9,000 | 19731486 |
| 500402 | Oct 4, 2000 | Oct 4, 2000 | Rio Petroleum, Inc. | MS Bettye #1136TX | 8,800 | 19731172 |
| 499808 | Sep 29, 2000 | Sep 29, 2000 | Trio Operating Company, Inc. | Cagle-Petty Unit #2 | 8,700 | 19731484 |
| 499964 | Sep 28, 2000 | Sep 28, 2000 | Cet Energy Corporation | Morgan-Nicholson, John H. #1 | 8,200 | 19731485 |
| 498483 | Sep 19, 2000 | Sep 19, 2000 | Belco Energy Corp. | Haynes #1 | 9,000 | 19731480 |
| 498990 | Sep 12, 2000 | Sep 12, 2000 | Kadane Corporation | Tabor-Jackson Unit #2 | 8,500 | 19731483 |
| 498672 | Aug 25, 2000 | Aug 25, 2000 | Key Energy of Colorado, Inc. | Young Unit #2 | 9,000 | 19731482 |
| 498411 | Aug 23, 2000 | Aug 23, 2000 | Van Operating, Ltd. | Fisher Unit "140" #1ST | 8,700 | 19731350 |
| 498648 | Aug 21, 2000 | Aug 21, 2000 | Belco Energy Corp. | Tabor #1 | 9,000 | 19731481 |
| 498648Amendment | Aug 21, 2000 | Aug 21, 2000 | Belco Energy Corp. | Tabor #1 | 9,000 | 19731481 |
| 498492 | Aug 18, 2000 | Aug 18, 2000 | Key Energy of Colorado, Inc. | Hurst #3 | 8,500 | 19731479 |
| 498212 | Aug 14, 2000 | Aug 14, 2000 | Belco Energy Corp. | Tabor #2 | 9,000 | 19731478 |
| 498213 | Aug 11, 2000 | Aug 11, 2000 | Belco Energy Corp. | Holcomb #2 | 9,000 | 19731477 |
| 496776 | Aug 2, 2000 | Aug 2, 2000 | Foree Oil Company | Sorenson "A" #1A | 8,300 | 19731472 |
| 497410 | Jul 25, 2000 | Jul 25, 2000 | Bridger Oil Inc. | Taylor #2 | 9,000 | 19731475 |
| 497492 | Jul 24, 2000 | Jul 24, 2000 | Trio Operating Company, Inc. | Howard #1 | 8,500 | 19731476 |
| 497289 | Jul 18, 2000 | Jul 18, 2000 | Belco Energy Corp. | Stepp #1 | 9,000 | 19731474 |
| 496912 | Jul 6, 2000 | Jul 6, 2000 | Belco Energy Corp. | Holcomb #1 | 9,000 | 19731473 |
| 495907 | Jun 21, 2000 | Jun 21, 2000 | Key Energy of Colorado, Inc. | McNabb #4 | 9,000 | 19731470 |
| 493789 | May 31, 2000 | May 31, 2000 | Foree Oil Company | Walser-Morris Unit #1 #1 | 8,200 | 19731467 |
| 495462 | May 25, 2000 | May 25, 2000 | Decleva, Paul | Cato #5 | 8,262 | 19730859 |
| 495196 | May 18, 2000 | May 18, 2000 | Corda Corporation | Chesshir Unit #1 | 8,600 | 19731469 |
| 491951 | May 17, 2000 | May 17, 2000 | Kadane Corporation | David-Bert Unit #1 | 8,500 | 19731463 |
| 494312 | May 9, 2000 | May 9, 2000 | Ashtola Exploration Company,inc. | McClellan-Phillips #1 | 8,200 | 19731440 |
| 494312Amendment | May 9, 2000 | May 9, 2000 | Ashtola Exploration Company,inc. | McClellan-Phillips #1 | 8,200 | 19731440 |
| 493586 | Apr 21, 2000 | Apr 21, 2000 | Trio Operating Company, Inc. | Hurst #2 | 8,800 | 19731465 |
| 494020 | Apr 12, 2000 | Apr 12, 2000 | Trio Operating Company, Inc. | Neal Ranch #1 | 8,200 | 19731468 |
| 493655 | Mar 31, 2000 | Mar 31, 2000 | Decleva, Paul | Cato #10 | 8,100 | 19731466 |
| 493655Amendment | Mar 31, 2000 | Mar 31, 2000 | Decleva, Paul | Cato #10 | 8,100 | 19731466 |
| 492160 | Feb 23, 2000 | Feb 23, 2000 | Key Energy of Colorado, Inc. | Holmes #5 | 7,971 | 19731281 |
| 491806 | Feb 11, 2000 | Feb 11, 2000 | Crawford Energy, Incorporated | C. E. Trust #1 | 7,400 | 19731424 |
| 491340 | Jan 24, 2000 | Jan 24, 2000 | Trio Operating Company, Inc. | Hurst #1H | 8,700 | 19731437 |
| 490177 | Dec 9, 1999 | Dec 9, 1999 | Trio Operating Company, Inc. | Minshew "a" Unit #1 | 8,600 | 19731462 |
| 489593 | Nov 22, 1999 | Nov 22, 1999 | Trio Operating Company, Inc. | Palaura-Hatcher #2 | 9,000 | 19731461 |
| 488251 | Oct 29, 1999 | Oct 29, 1999 | Kadane Corporation | Forbes #4 | 8,500 | 19731458 |
| 488728 | Oct 25, 1999 | Oct 25, 1999 | Trio Operating Company, Inc. | Palaura-Rapp #2 | 8,400 | 19731459 |
| 488752 | Oct 22, 1999 | Oct 22, 1999 | Key Energy of Colorado, Inc. | West Estate #3 | 9,900 | 19731460 |
| 487218 | Oct 20, 1999 | Oct 20, 1999 | Ashtola Exploration Company,inc. | Grange "B" #1 | 8,500 | 19731454 |
| 487219 | Oct 14, 1999 | Oct 14, 1999 | Ashtola Exploration Company,inc. | St. Germaine #1 | 8,500 | 19731455 |
| 487219Amendment | Oct 14, 1999 | Oct 14, 1999 | Ashtola Exploration Company,inc. | St. Germaine Unit #1H | 8,500 | 19731455 |
| 487346 | Oct 7, 1999 | Oct 7, 1999 | Key Energy of Colorado, Inc. | Meharg Unit #1ST | 8,300 | 19731444 |
| 488089 | Sep 30, 1999 | Sep 30, 1999 | Kadane Corporation | Jackson #4 | 8,500 | 19731457 |
| 488062 | Sep 29, 1999 | Sep 29, 1999 | Key Energy of Colorado, Inc. | Baustert #1 | 8,500 | 19731456 |
| 487194 | Sep 2, 1999 | Sep 2, 1999 | Corda Corporation | R and R #2 | 8,400 | 19731453 |
| 487113 | Aug 30, 1999 | Aug 30, 1999 | Key Energy of Colorado, Inc. | West Estate Unit #2 | 9,000 | 19731452 |
| 485675 | Jul 7, 1999 | Jul 7, 1999 | Corda Corporation | Word A #2 | 8,400 | 19731451 |
| 485501 | Jun 29, 1999 | Jun 29, 1999 | Ratliff Operating Corp. | Holcomb #1 | 9,000 | 19731450 |
| 484914 | Jun 1, 1999 | Jun 1, 1999 | Corda Corporation | McClellan-Phillips Unit #2 | 8,050 | 19731449 |
| 484908 | Jun 1, 1999 | Jun 1, 1999 | Key Energy of Colorado, Inc. | Young #1 | 8,500 | 19731448 |