| 493588 | Mar 29, 2000 | Mar 29, 2000 | Anadarko Petroleum Corp. | Nield "D" #120A | 3,405 | 34132693 |
| 492232 | Mar 24, 2000 | Mar 24, 2000 | Anadarko Petroleum Corp. | Brown C #9022R | 2,400 | 34132687 |
| 492228 | Mar 24, 2000 | Mar 24, 2000 | Anadarko Petroleum Corp. | Brown C #7022R | 2,400 | 34132685 |
| 492231 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown B #9034R | 2,400 | 34132674 |
| 492230 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown B #1134R | 2,400 | 34132675 |
| 492229 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown C #6022R | 2,400 | 34132686 |
| 492226 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown B #8034R | 2,400 | 34132677 |
| 492225 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown B #7034R | 2,400 | 34132676 |
| 492224 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown A #9064R | 2,400 | 34132683 |
| 492223 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown A #8064R | 2,400 | 34132682 |
| 492222 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown A #7064R | 2,400 | 34132681 |
| 492222Amendment | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Brown A #7064R | 2,400 | 34132681 |
| 492220 | Mar 20, 2000 | Mar 20, 2000 | Anadarko Petroleum Corp. | Sneed "A" #8050R | 2,400 | 34132679 |
| 492227 | Mar 17, 2000 | Mar 17, 2000 | Anadarko Petroleum Corp. | Brown C #8022R | 2,400 | 34132684 |
| 492221 | Mar 17, 2000 | Mar 17, 2000 | Anadarko Petroleum Corp. | Brown A #6064R | 2,400 | 34132680 |
| 492217 | Mar 17, 2000 | Mar 17, 2000 | Anadarko Petroleum Corp. | Sneed "C" #9050R | 2,400 | 34132678 |
| 492217Amendment | Mar 17, 2000 | Mar 17, 2000 | Anadarko Petroleum Corp. | Sneed "C" #9050R | 2,400 | 34132678 |
| 491706 | Mar 16, 2000 | Mar 16, 2000 | Amoco Production Company | Phillips, Kathleen "B" #2 | 3,300 | 34132669 |
| 491706Amendment | Mar 16, 2000 | Mar 16, 2000 | Amoco Production Company | Phillips, Kathleen "B" #2 | 3,500 | 34132669 |
| 492476 | Feb 28, 2000 | Feb 28, 2000 | Pioneer Natural Res. USA, Inc. | Sneed #B 3H | 3,100 | 34100328 |
| 492473 | Feb 28, 2000 | Feb 28, 2000 | Pioneer Natural Res. USA, Inc. | Masterson #B 15H | 3,000 | 34100440 |
| 491663 | Feb 25, 2000 | Feb 25, 2000 | Amoco Production Company | Jones-Ryan #2190 | 3,500 | 34132667 |
| 491973 | Feb 24, 2000 | Feb 24, 2000 | Amoco Production Company | Cator, Marshall #3 | 3,500 | 34132673 |
| 491775 | Feb 15, 2000 | Feb 15, 2000 | Amoco Production Company | Read "E" #2141 | 3,400 | 34132671 |
| 491774 | Feb 9, 2000 | Feb 9, 2000 | Amoco Production Company | Phillips, Kathleen "A" #2 | 3,600 | 34132672 |
| 491719 | Feb 8, 2000 | Feb 8, 2000 | Amoco Production Company | Read "D" #2124 | 3,400 | 34132668 |
| 491719Amendment | Feb 8, 2000 | Feb 8, 2000 | BP America Production Company | Read "D" #2124 | 3,400 | 34132668 |
| 491707 | Feb 8, 2000 | Feb 8, 2000 | Amoco Production Company | Nisbett #2 | 3,500 | 34132670 |
| 491491 | Jan 28, 2000 | Jan 28, 2000 | Phillips Petroleum Company | Booher, J. B. #1R | 3,500 | 34132666 |
| 491306 | Jan 24, 2000 | Jan 24, 2000 | Pioneer Natural Res. USA, Inc. | Baker #A 2H | 3,700 | 34132381 |
| 491078 | Jan 18, 2000 | Jan 18, 2000 | Pioneer Natural Res. USA, Inc. | Masterson #A42H | 3,100 | 34132321 |
| 491079 | Jan 14, 2000 | Jan 14, 2000 | Pioneer Natural Res. USA, Inc. | Fee #A 3H | 3,200 | 34100643 |
| 491077 | Jan 14, 2000 | Jan 14, 2000 | Pioneer Natural Res. USA, Inc. | Masterson #B105H | 3,300 | 34131325 |
| 490739 | Dec 31, 1999 | Dec 31, 1999 | Huber, J. M., Corporation | Vilas #3 | 3,500 | 34132665 |
| 490578 | Dec 22, 1999 | Dec 22, 1999 | Pioneer Natural Res. USA, Inc. | Killgore #A20H | 3,600 | 34131324 |
| 490576 | Dec 22, 1999 | Dec 22, 1999 | Pioneer Natural Res. USA, Inc. | Cooper #A 1H | 3,600 | 34100405 |
| 490190 | Dec 14, 1999 | Dec 14, 1999 | Basics Oil & Gas, Inc. | Baker "39" #15 | 2,500 | 34132663 |
| 490189 | Dec 14, 1999 | Dec 14, 1999 | Basics Oil & Gas, Inc. | Baker "39" #14 | 2,500 | 34132662 |
| 490208 | Dec 10, 1999 | Dec 10, 1999 | Basics Oil & Gas, Inc. | Baker "39" #16 | 2,500 | 34132664 |
| 489889 | Nov 30, 1999 | Nov 30, 1999 | Pioneer Natural Res. USA, Inc. | Bivins #A178H | 3,600 | 34130256 |
| 489827 | Nov 29, 1999 | Nov 29, 1999 | Pioneer Natural Res. USA, Inc. | Read #A 5H | 3,600 | 34100391 |
| 487711 | Nov 1, 1999 | Nov 1, 1999 | Anadarko Petroleum Corp. | Sneed A #4020R | 2,400 | 34132660 |
| 487696 | Nov 1, 1999 | Nov 1, 1999 | Anadarko Petroleum Corp. | Brown D #5036R | 2,400 | 34132654 |
| 487695 | Nov 1, 1999 | Nov 1, 1999 | Anadarko Petroleum Corp. | Brown D #4036R | 2,400 | 34132653 |
| 487692 | Nov 1, 1999 | Nov 1, 1999 | Anadarko Petroleum Corp. | Brown B #6034R | 2,400 | 34132652 |
| 488678 | Oct 21, 1999 | Oct 21, 1999 | Crescendo Resources, L.P. | Bowermaster #2 | 3,400 | 34132661 |
| 488401 | Oct 13, 1999 | Oct 13, 1999 | Pioneer Natural Res. USA, Inc. | Masterson #A 7H | 3,400 | 34100329 |
| 488400 | Oct 12, 1999 | Oct 12, 1999 | Pioneer Natural Res. USA, Inc. | Masterson #A 21H | 3,200 | 34100412 |
| 487710 | Oct 12, 1999 | Oct 12, 1999 | Anadarko Petroleum Corp. | Sneed A #5020R | 2,400 | 34132659 |
| 487709 | Oct 12, 1999 | Oct 12, 1999 | Anadarko Petroleum Corp. | Sneed A #6020R | 2,400 | 34132658 |
| 487708 | Oct 12, 1999 | Oct 12, 1999 | Anadarko Petroleum Corp. | Sneed A #4033R | 2,400 | 34132657 |
| 487707 | Oct 12, 1999 | Oct 12, 1999 | Anadarko Petroleum Corp. | Sneed A #5033R | 2,400 | 34132650 |
| 487698 | Oct 12, 1999 | Oct 12, 1999 | Anadarko Petroleum Corp. | Jester #3018R | 2,400 | 34132656 |
| 487697 | Oct 12, 1999 | Oct 12, 1999 | Anadarko Petroleum Corp. | Brown #6036R | 2,400 | 34132655 |
| 487693 | Oct 12, 1999 | Oct 12, 1999 | Anadarko Petroleum Corp. | Brown A #5064R | 2,400 | 34132651 |
| 487762 | Sep 27, 1999 | Sep 27, 1999 | Pioneer Natural Res. USA, Inc. | Sneed #A 3H | 3,300 | 34100677 |
| 487867 | Sep 24, 1999 | Sep 24, 1999 | A & B Well Service Inc. | Mitzie #8 | 3,780 | 34131244 |
| 487589 | Sep 20, 1999 | Sep 20, 1999 | Pioneer Natural Res. USA, Inc. | Sneed #A 10H | 3,500 | 34130032 |
| 487589Amendment | Sep 20, 1999 | Sep 20, 1999 | Pioneer Natural Res. USA, Inc. | Sneed #A 10H | 3,500 | 34130032 |
| 484965 | Sep 15, 1999 | Sep 15, 1999 | Anadarko Petroleum Corp. | Brown #5034R | 2,400 | 34132635 |
| 484950 | Sep 15, 1999 | Sep 15, 1999 | Anadarko Petroleum Corp. | Brown #4064R | 2,400 | 34132634 |
| 484929 | Sep 15, 1999 | Sep 15, 1999 | Anadarko Petroleum Corp. | Brown #3022R | 2,400 | 34132632 |
| 484927 | Sep 15, 1999 | Sep 15, 1999 | Anadarko Petroleum Corp. | Brown #5022R | 2,400 | 34132630 |
| 487516 | Sep 14, 1999 | Sep 14, 1999 | Myriad Resources Corporation | Terry #2A | 3,800 | 34132921 |
| 487515 | Sep 14, 1999 | Sep 14, 1999 | Myriad Resources Corporation | Harbert #2 | 3,800 | 34132649 |
| 487343 | Sep 13, 1999 | Sep 13, 1999 | Pioneer Natural Res. USA, Inc. | Sneed #B 4H | 3,100 | 34100691 |
| 487316 | Sep 10, 1999 | Sep 10, 1999 | Taylor, Gordon Oil Company, LP | Wells #1 | 3,950 | 34132647 |
| 487306 | Sep 8, 1999 | Sep 8, 1999 | Pioneer Natural Res. USA, Inc. | Thompson #A 7H | 3,600 | 34132304 |
| 486683 | Aug 17, 1999 | Aug 17, 1999 | Pioneer Natural Res. USA, Inc. | Sneed #A 7H | 3,200 | 34101525 |
| 486323 | Aug 3, 1999 | Aug 3, 1999 | Pioneer Natural Res. USA, Inc. | Sneed #A 2H | 3,600 | 34100682 |
| 486322 | Aug 3, 1999 | Aug 3, 1999 | Pioneer Natural Res. USA, Inc. | Read #A 8H | 3,500 | 34130031 |
| 486289 | Aug 3, 1999 | Aug 3, 1999 | Pioneer Natural Res. USA, Inc. | Sneed #A 11H | 3,500 | 34132285 |
| 486288 | Aug 3, 1999 | Aug 3, 1999 | Crescendo Resources, L.P. | Tays #2396 | 3,300 | 34132646 |
| 486151 | Jul 27, 1999 | Jul 27, 1999 | Pioneer Natural Res. USA, Inc. | Masterson "41" #163R | 2,500 | 34132645 |
| 486025 | Jul 23, 1999 | Jul 23, 1999 | Pioneer Natural Res. USA, Inc. | Cooper #1R | 2,600 | 34132644 |
| 485993 | Jul 21, 1999 | Jul 21, 1999 | Pioneer Natural Res. USA, Inc. | Read #A 3H | 3,600 | 34100522 |
| 485980 | Jul 21, 1999 | Jul 21, 1999 | Pioneer Natural Res. USA, Inc. | Sneed "5" #15R | 2,400 | 34132643 |
| 485979 | Jul 21, 1999 | Jul 21, 1999 | Pioneer Natural Res. USA, Inc. | Sneed "4" #16R | 2,400 | 34132642 |
| 485706 | Jul 12, 1999 | Jul 12, 1999 | Pioneer Natural Res. USA, Inc. | Masterson #162R | 2,600 | 34132641 |
| 484966 | Jul 12, 1999 | Jul 12, 1999 | Anadarko Petroleum Corp. | Brown B #4034R | 2,400 | 34132636 |
| 484949 | Jul 12, 1999 | Jul 12, 1999 | Anadarko Petroleum Corp. | Brown A #3064R | 2,400 | 34132633 |
| 484928 | Jul 12, 1999 | Jul 12, 1999 | Anadarko Petroleum Corp. | Brown C #4022R | 2,400 | 34132631 |
| 485659 | Jul 7, 1999 | Jul 7, 1999 | Pioneer Natural Res. USA, Inc. | Masterson "59" #160R | 2,700 | 34132639 |
| 485658 | Jul 7, 1999 | Jul 7, 1999 | Pioneer Natural Res. USA, Inc. | Thompson "2" #13R | 2,600 | 34132640 |
| 485610 | Jul 6, 1999 | Jul 6, 1999 | Phillips Petroleum Company | Bricker, A. D. #1R | 3,400 | 34132638 |
| 485610Amendment | Jul 6, 1999 | Jul 6, 1999 | Phillips Petroleum Company | Bricker, A. D. #1R | 3,400 | 34132638 |
| 483483 | Jun 29, 1999 | Jun 29, 1999 | Pioneer Natural Res. USA, Inc. | Sneed "42" #D 3H | 3,400 | 34132587 |
| 485086 | Jun 11, 1999 | Jun 11, 1999 | Crescendo Resources, L.P. | Johnson #3395 | 3,400 | 34132637 |
| 484797 | May 28, 1999 | May 28, 1999 | Phillips Petroleum Company | Clevy #1 | 3,728 | 34100972 |
| 484370 | May 17, 1999 | May 17, 1999 | Pioneer Natural Res. USA, Inc. | Masterson #A 49H | 3,600 | 34132572 |
| 484251 | May 4, 1999 | May 4, 1999 | Crescendo Resources, L.P. | Brian #2051R | 3,500 | 34132629 |
| 484075 | May 3, 1999 | May 3, 1999 | Pioneer Natural Res. USA, Inc. | Bivins #A192H | 3,600 | 34132326 |
| 483673 | Apr 12, 1999 | Apr 12, 1999 | W.B.D. Oil and Gas Inc. | Miller #2 | 3,600 | 34130773 |
| 482713 | Feb 22, 1999 | Feb 22, 1999 | GPM Gas Corporation | Dumas Plant H2S Injection #1 | 5,600 | 34132628 |
| 482713Amendment | Feb 22, 1999 | Feb 22, 1999 | GPM Gas Corporation | Dumas Plant H2S Injection #1 | 5,600 | 34132628 |
| 482345 | Feb 3, 1999 | Feb 3, 1999 | Crescendo Resources, L.P. | Brumley-Sunset #2306 | 3,500 | 34132627 |
| 482096 | Jan 22, 1999 | Jan 22, 1999 | Crescendo Resources, L.P. | Britain, E. C. #39 | 3,100 | 34132626 |
| 482095 | Jan 22, 1999 | Jan 22, 1999 | Crescendo Resources, L.P. | Makeig, Ella #209 | 3,400 | 34132624 |
| 482094 | Jan 22, 1999 | Jan 22, 1999 | Crescendo Resources, L.P. | Anderson #2406 | 3,500 | 34132625 |
| 482092 | Jan 22, 1999 | Jan 22, 1999 | Crescendo Resources, L.P. | Taylor "A" #2244 | 3,200 | 34132623 |