| 487013 | Aug 31, 1999 | Aug 31, 1999 | Union Pacific Resources Company | Crockett | McMullan D #6 | 10,000 | 10537615 |
| 487056 | Aug 27, 1999 | Aug 27, 1999 | Union Pacific Resources Company | Lee | Ziehr, Lillian #1AH | 13,000 | 28731588 |
| 486933 | Aug 27, 1999 | Aug 27, 1999 | Union Pacific Resources Company | Crockett | McMullan "F1" #2 | 9,250 | 10536781 |
| 486900 | Aug 24, 1999 | Aug 24, 1999 | Union Pacific Resources Company | Burleson | Smith, Jessie #1REH | 14,500 | 05133060 |
| 486900Amendment | Aug 24, 1999 | Aug 24, 1999 | Union Pacific Resources Company | Burleson | Smith, Jessie #1REH | 14,500 | 05133060 |
| 486733 | Aug 18, 1999 | Aug 18, 1999 | Union Pacific Resources Company | Brazos | Jones-Foster Unit #1REH | 14,000 | 04131723 |
| 486591 | Aug 17, 1999 | Aug 17, 1999 | Union Pacific Resources Company | Panola | Cgu 1 #10 | 10,300 | 36534206 |
| 486631 | Aug 13, 1999 | Aug 13, 1999 | Union Pacific Resources Company | Austin | Shupak Unit #1REH | 17,000 | 01530733 |
| 486631Amendment | Aug 13, 1999 | Aug 13, 1999 | Union Pacific Resources Company | Austin | Shupak Unit #1REH | 22,000 | 01530733 |
| 486444 | Aug 9, 1999 | Aug 9, 1999 | Union Pacific Resources Company | Crockett | McMullan 6 #6 | 8,600 | 10537230 |
| 486452 | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Burleson | Filippone #2REH | 12,500 | 05130386 |
| 486452Amendment | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Burleson | Filippone #2REH | 12,500 | 05130386 |
| 486451 | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Bastrop | Caroline Unit #1H | 13,000 | 02131538 |
| 486451Amendment | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Bastrop | Caroline Unit #1H | 13,000 | 02131538 |
| 486450 | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Austin | Morris Unit #1H | 17,000 | 01530739 |
| 486450Amendment | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Austin | Morris Unit #1H | 22,000 | 01530739 |
| 486224 | Jul 29, 1999 | Jul 29, 1999 | Union Pacific Resources Company | Fayette | Paape Unit #1REH | 16,500 | 14931822 |
| 486042 | Jul 26, 1999 | Jul 26, 1999 | Union Pacific Resources Company | Crockett | Jones-Miller #6 | 9,990 | 10537928 |
| 486001 | Jul 23, 1999 | Jul 23, 1999 | Union Pacific Resources Company | Crockett | Montgomery "20" #4 | 9,933 | 10537998 |
| 486842 | Jul 22, 1999 | Jul 22, 1999 | Union Pacific Resources Company | Ector | Madison #1 | 12,600 | 13537732 |
| 485850 | Jul 15, 1999 | Jul 15, 1999 | Union Pacific Resources Company | Milam | Kyle #1H | 6,100 | 33133512 |
| 485570 | Jul 2, 1999 | Jul 2, 1999 | Union Pacific Resources Company | Crockett | Jones-Miller #7 | 6,900 | 10537929 |
| 485570Amendment | Jul 2, 1999 | Jul 2, 1999 | Union Pacific Resources Company | Crockett | Jones-Miller #7 | 9,520 | 10537929 |
| 485546 | Jun 30, 1999 | Jun 30, 1999 | Union Pacific Resources Company | Austin | Henske Unit #1H | 16,500 | 01530735 |
| 485546Amendment | Jun 30, 1999 | Jun 30, 1999 | Union Pacific Resources Company | Austin | Henske Unit #1H | 23,000 | 01530735 |
| 485485 | Jun 28, 1999 | Jun 28, 1999 | Union Pacific Resources Company | Austin | Nehrkorn Unit #1H | 16,500 | 01530728 |
| 485485Amendment | Jun 28, 1999 | Jun 28, 1999 | Union Pacific Resources Company | Austin | Nehrkorn Unit #1REH | 22,000 | 01530728 |
| 485284 | Jun 17, 1999 | Jun 17, 1999 | Union Pacific Resources Company | Brazos | Lenz Unit #1REH | 14,000 | 04131580 |
| 484979 | Jun 9, 1999 | Jun 9, 1999 | Union Pacific Resources Company | Milam | Shimek-Hoppe Unit #1H | 6,350 | 33133511 |
| 484979Amendment | Jun 9, 1999 | Jun 9, 1999 | Union Pacific Resources Company | Milam | Shimek-Hoppe Unit #1H | 6,350 | 33133511 |
| 484602 | Jun 2, 1999 | Jun 2, 1999 | Union Pacific Resources Company | Jasper | Vastar Fee Unit A-251 #1H | 15,500 | 24130662 |
| 484849 | May 28, 1999 | May 28, 1999 | Union Pacific Resources Company | Brazos | Brazos Coal Ltd.-Terry "B" Unit #1REH | 12,000 | 04131729 |
| 484654 | May 20, 1999 | May 20, 1999 | Union Pacific Resources Company | Brazos | Weedon-Weedon B #1REH | 10,750 | 04131646 |
| 484654Amendment | May 20, 1999 | May 20, 1999 | Union Pacific Resources Company | Brazos | Weedon-Weedon B #1REH | 11,000 | 04131646 |
| 484272 | May 13, 1999 | May 13, 1999 | Union Pacific Resources Company | Jasper | Black Stone Minerals Unit A-981 #1H | 11,500 | 24130661 |
| 484272Amendment | May 13, 1999 | May 13, 1999 | Union Pacific Resources Company | Jasper | Black Stone Minerals Unit A-981 #1H | 16,820 | 24130661 |
| 484437 | May 12, 1999 | May 12, 1999 | Union Pacific Resources Company | Milam | Ely #3H | 6,500 | 33133510 |
| 484437Amendment | May 12, 1999 | May 12, 1999 | Union Pacific Resources Company | Milam | Ely #3H | 5,926 | 33133510 |
| 484456 | May 11, 1999 | May 11, 1999 | Union Pacific Resources Company | Austin | Goeke #1H | 16,000 | 01530734 |
| 484296 | May 5, 1999 | May 5, 1999 | Union Pacific Resources Company | Jasper | S. Goode Unit A-151 #1H | 12,500 | 24130646 |
| 484235 | May 3, 1999 | May 3, 1999 | Union Pacific Resources Company | Jasper | Vastar Fee Unit A-888 #1H | 11,500 | 24130660 |
| 484235Amendment | May 3, 1999 | May 3, 1999 | Union Pacific Resources Company | Jasper | Vastar Fee Unit A-888 #1H | 12,058 | 24130660 |
| 484209 | Apr 30, 1999 | Apr 30, 1999 | Union Pacific Resources Company | Jasper | Vastar Fee Unit A-215 #1H | 15,000 | 24130659 |
| 484135 | Apr 27, 1999 | Apr 27, 1999 | Union Pacific Resources Company | Austin | Shupak Unit #1H | 15,750 | 01530733 |
| 484176 | Apr 26, 1999 | Apr 26, 1999 | Union Pacific Resources Company | Fayette | Weigelt #1H | 12,500 | 14933091 |
| 484176Amendment | Apr 26, 1999 | Apr 26, 1999 | Union Pacific Resources Company | Fayette | Weigelt #1H | 12,500 | 14933091 |
| 484039 | Apr 22, 1999 | Apr 22, 1999 | Union Pacific Resources Company | Fayette | RWR Unit #1REH | 12,000 | 14931804 |
| 484039Amendment | Apr 22, 1999 | Apr 22, 1999 | Union Pacific Resources Company | Fayette | RWR Unit #1REH | 12,000 | 14931804 |
| 483820 | Apr 13, 1999 | Apr 13, 1999 | Union Pacific Resources Company | Milam | Cunningham #2H | 6,047 | 33133509 |
| 483820Amendment | Apr 13, 1999 | Apr 13, 1999 | Union Pacific Resources Company | Milam | Cunningham #2H | 6,005 | 33133509 |
| 483779 | Apr 13, 1999 | Apr 13, 1999 | Union Pacific Resources Company | Austin | Pearlie Mae Unit #1H | 16,000 | 01530731 |
| 483779Amendment | Apr 13, 1999 | Apr 13, 1999 | Union Pacific Resources Company | Austin | Pearlie Mae Unit #1H | 20,000 | 01530731 |
| 483732 | Apr 8, 1999 | Apr 8, 1999 | Union Pacific Resources Company | Fayette | Embesi Unit #1REH | 12,500 | 14931491 |
| 483336 | Mar 17, 1999 | Mar 17, 1999 | Union Pacific Resources Company | Fayette | Ludie Unit #1REH | 12,000 | 14931829 |
| 483216 | Mar 11, 1999 | Mar 11, 1999 | Union Pacific Resources Company | Goliad | Schrade Unit #1 | 2,900 | 17533001 |
| 482907 | Mar 10, 1999 | Mar 10, 1999 | Union Pacific Resources Company | Panola | Cgu 17 #8C | 10,100 | 36532879 |
| 482768 | Feb 18, 1999 | Feb 18, 1999 | Union Pacific Resources Company | Bastrop | Roesener, F. G. #1 | 7,079 | 02100139 |
| 482767 | Feb 18, 1999 | Feb 18, 1999 | Union Pacific Resources Company | Brazos | Woolum-Holligan Unit #1REH | 15,000 | 04131540 |
| 481095 | Feb 15, 1999 | Feb 15, 1999 | Union Pacific Resources Company | Johnson | Atlas, Mildred #1 | 9,500 | 25130107 |
| 482597 | Feb 12, 1999 | Feb 12, 1999 | Union Pacific Resources Company | Jasper | S. Cruse Unit A-10 #1H | 11,500 | 24130658 |
| 482645 | Feb 11, 1999 | Feb 11, 1999 | Union Pacific Resources Company | Austin | Dierking Unit #1H | 16,500 | 01530729 |
| 482645Amendment | Feb 11, 1999 | Feb 11, 1999 | Union Pacific Resources Company | Austin | Dierking Unit #1H | 19,100 | 01530729 |
| 482609 | Feb 11, 1999 | Feb 11, 1999 | Union Pacific Resources Company | Midland | Spinks #1HH | 12,000 | 32934155 |
| 482533 | Feb 8, 1999 | Feb 8, 1999 | Union Pacific Resources Company | Brazos | Wheeler-Wheeler "a" Unit #1REH | 11,000 | 04131619 |
| 482369 | Feb 1, 1999 | Feb 1, 1999 | Union Pacific Resources Company | Austin | Nehrkorn Unit #1H | 16,500 | 01530728 |
| 482368 | Feb 1, 1999 | Feb 1, 1999 | Union Pacific Resources Company | Fayette | Kaspar Unit #2REH | 11,800 | 14931842 |
| 482294 | Jan 29, 1999 | Jan 29, 1999 | Union Pacific Resources Company | Zapata | Haynes #18 | 15,000 | 50533895 |
| 482293 | Jan 29, 1999 | Jan 29, 1999 | Union Pacific Resources Company | Burleson | Yegua-Ware Unit #1REH | 12,000 | 05133342 |
| 482293Amendment | Jan 29, 1999 | Jan 29, 1999 | Union Pacific Resources Company | Burleson | Yegua-Ware Unit #1REH | 12,000 | 05133342 |
| 482314 | Jan 28, 1999 | Jan 28, 1999 | Union Pacific Resources Company | Smith | Hammerhead Unit #1 | 13,300 | 42331513 |
| 451165Amendment | Jan 22, 1999 | Jan 22, 1999 | Union Pacific Resources Company | Newton | Arco-Maersk #3REH | 12,109 | 35130526 |
| 481929 | Jan 7, 1999 | Jan 7, 1999 | Union Pacific Resources Company | Fayette | Elo #2REH | 12,500 | 14931817 |
| 481929Amendment | Jan 7, 1999 | Jan 7, 1999 | Union Pacific Resources Company | Fayette | Elo #2REH | 12,500 | 14931817 |
| 481929Amendment | Jan 7, 1999 | Jan 7, 1999 | Union Pacific Resources Company | Fayette | Elo #2REH | 12,500 | 14931817 |
| 481274 | Dec 31, 1998 | Dec 31, 1998 | Union Pacific Resources Company | Panola | Cgu 23 #12 | 10,300 | 36534087 |
| 481216 | Dec 31, 1998 | Dec 31, 1998 | Union Pacific Resources Company | Panola | Cgu 20 #13 | 10,300 | 36534086 |
| 481000 | Dec 30, 1998 | Dec 30, 1998 | Union Pacific Resources Company | Panola | Searcy Gas Unit #8 | 10,300 | 36534081 |
| 481117 | Dec 28, 1998 | Dec 28, 1998 | Union Pacific Resources Company | Panola | Cgu 10 #13 | 10,300 | 36534084 |
| 481531 | Dec 17, 1998 | Dec 17, 1998 | Union Pacific Resources Company | Midland | Evans E #1HH | 12,000 | 32934134 |
| 481202 | Dec 17, 1998 | Dec 17, 1998 | Union Pacific Resources Company | Panola | Cgu 17 #12 | 10,300 | 36534085 |
| 481409 | Dec 14, 1998 | Dec 14, 1998 | Union Pacific Resources Company | Austin | Theldick Unit #1H | 16,000 | 01530723 |
| 473244 | Dec 11, 1998 | Dec 11, 1998 | Union Pacific Resources Company | Washington | Van Eman Unit #1H | 14,700 | 47730858 |
| 481278 | Dec 4, 1998 | Dec 4, 1998 | Union Pacific Resources Company | Washington | Milam Unit #1H | 15,000 | 47730724 |
| 481161 | Dec 1, 1998 | Dec 1, 1998 | Union Pacific Resources Company | Milam | Thresher #1 | 9,700 | 33133508 |
| 480999 | Dec 1, 1998 | Dec 1, 1998 | Union Pacific Resources Company | Panola | Cgu 6 #13 | 10,300 | 36534082 |
| 480681 | Nov 13, 1998 | Nov 13, 1998 | Union Pacific Resources Company | Crockett | Moody "37" #14 | 7,900 | 10538220 |
| 480680 | Nov 13, 1998 | Nov 13, 1998 | Union Pacific Resources Company | Crockett | Moody "37" #13 | 7,900 | 10538219 |
| 480689 | Nov 12, 1998 | Nov 12, 1998 | Union Pacific Resources Company | Panola | Freeman Gas Unit #9 | 10,300 | 36534068 |
| 480687 | Nov 12, 1998 | Nov 12, 1998 | Union Pacific Resources Company | Jasper | East Gilchrist a-153 Unit #1H | 15,500 | 24130656 |
| 480687Amendment | Nov 12, 1998 | Nov 12, 1998 | Union Pacific Resources Company | Jasper | East Gilchrist a-153 Unit #1H | 15,500 | 24130656 |
| 480687Amendment | Nov 12, 1998 | Nov 12, 1998 | Union Pacific Resources Company | Jasper | East Gilchrist a-153 Unit #1H | 15,500 | 24130656 |
| 480687Amendment | Nov 12, 1998 | Nov 12, 1998 | Union Pacific Resources Company | Jasper | East Gilchrist a-153 Unit #1H | 15,500 | 24130656 |
| 480745 | Nov 10, 1998 | Nov 10, 1998 | Union Pacific Resources Company | Zapata | Haynes #17 | 15,000 | 50533872 |
| 480743 | Nov 9, 1998 | Nov 9, 1998 | Union Pacific Resources Company | Brazos | Fickey-Lard (Buda) Unit #1REH | 13,800 | 04131666 |
| 480690 | Nov 9, 1998 | Nov 9, 1998 | Union Pacific Resources Company | Panola | Cgu 28 #10 | 10,300 | 36534067 |
| 480690Amendment | Nov 9, 1998 | Nov 9, 1998 | Union Pacific Resources Company | Panola | Cgu 28 #10 | 11,000 | 36534067 |
| 480690Amendment | Nov 9, 1998 | Nov 9, 1998 | Union Pacific Resources Company | Panola | Cgu 28 #10 | 11,000 | 36534067 |
| 480688 | Nov 9, 1998 | Nov 9, 1998 | Union Pacific Resources Company | Jasper | Temple-Inland a-56 Unit #1H | 13,000 | 24130657 |
| 480660 | Nov 5, 1998 | Nov 5, 1998 | Union Pacific Resources Company | Brazos | Sitka Unit #1H | 8,000 | 39530577 |
| 480637 | Nov 5, 1998 | Nov 5, 1998 | Union Pacific Resources Company | Austin | Rains Trust Unit #1H | 16,000 | 01530721 |