| 542147 | Mar 1, 2004 | Mar 1, 2004 | Pioneer Exploration, Ltd. | Crane | Adams 'A' #8 | 3,950 | 10334989 |
| 542245 | Feb 25, 2004 | Feb 25, 2004 | Pioneer Exploration, Ltd. | Nolan | Aaa-Texas #1 | 6,500 | 35332788 |
| 542247 | Feb 23, 2004 | Feb 23, 2004 | Pioneer Exploration, Ltd. | Crane | Adams, H. E. -B- #16 | 8,200 | 10335300 |
| 542246 | Feb 23, 2004 | Feb 23, 2004 | Pioneer Exploration, Ltd. | Crane | Adams, H. E. -C- #17 | 8,200 | 10335324 |
| 542135 | Feb 20, 2004 | Feb 20, 2004 | Pioneer Exploration, Ltd. | Crane | Adams, H. E. -B- #15 | 8,200 | 10335325 |
| 542222 | Feb 18, 2004 | Feb 18, 2004 | Pioneer Exploration, Ltd. | Crane | Adams, H. E. -C- #16 | 8,200 | 10334981 |
| 539605 | Feb 12, 2004 | Feb 12, 2004 | Pioneer Exploration, Ltd. | Nolan | Hanks, Bille 'A' #51 | 5,500 | 35332811 |
| 539977 | Feb 9, 2004 | Feb 9, 2004 | Pioneer Exploration, Ltd. | Reagan | Robertson-Mulholland #7 | 3,000 | 38335376 |
| 539829 | Feb 9, 2004 | Feb 9, 2004 | Pioneer Exploration, Ltd. | Reagan | Husky #13 | 3,000 | 38335373 |
| 541427 | Feb 2, 2004 | Feb 2, 2004 | Pioneer Exploration, Ltd. | Wise | Stephens, Gerald #3 | 8,900 | 49735525 |
| 539976 | Feb 2, 2004 | Feb 2, 2004 | Pioneer Exploration, Ltd. | Reagan | Ball, Fred #11 | 3,000 | 38335378 |
| 539975 | Feb 2, 2004 | Feb 2, 2004 | Pioneer Exploration, Ltd. | Reagan | Ball, Fred #10 | 3,000 | 38335377 |
| 538855 | Jan 28, 2004 | Jan 28, 2004 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. "A" #16 | 6,400 | 35332807 |
| 541033 | Jan 23, 2004 | Jan 23, 2004 | Pioneer Exploration, Ltd. | Nolan | TXL -K- #11 | 5,900 | 35332815 |
| 539828 | Jan 22, 2004 | Jan 22, 2004 | Pioneer Exploration, Ltd. | Reagan | Husky #12 | 3,000 | 38335372 |
| 539825 | Jan 22, 2004 | Jan 22, 2004 | Pioneer Exploration, Ltd. | Reagan | Robertson-Mulholland #8 | 3,000 | 38335374 |
| 538989 | Jan 22, 2004 | Jan 22, 2004 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. "A" #18 | 6,400 | 35332810 |
| 538851 | Jan 22, 2004 | Jan 22, 2004 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. "A" #17 | 6,400 | 35332808 |
| 538849 | Jan 22, 2004 | Jan 22, 2004 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. "A" #19 | 6,400 | 35332809 |
| 540323 | Jan 7, 2004 | Jan 7, 2004 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. #11 | 6,500 | 35332814 |
| 540322 | Jan 7, 2004 | Jan 7, 2004 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. #12 | 6,500 | 35332813 |
| 539606 | Jan 6, 2004 | Jan 6, 2004 | Pioneer Exploration, Ltd. | Nolan | TXL -K- #10 | 5,600 | 35332812 |
| 539606Amendment | Jan 6, 2004 | Jan 6, 2004 | Pioneer Exploration, Ltd. | Nolan | TXL -K- #10 | 5,600 | 35332812 |
| 539049 | Nov 25, 2003 | Nov 25, 2003 | Pioneer Exploration, Ltd. | Montague | Kennedy Lower Conglomerate Unit #904 | 7,500 | 33733590 |
| 537588 | Oct 21, 2003 | Oct 21, 2003 | Pioneer Exploration, Ltd. | Nolan | TXL - K #9 | 5,500 | 35332805 |
| 537588Amendment | Oct 21, 2003 | Oct 21, 2003 | Pioneer Exploration, Ltd. | Nolan | TXL - K #9 | 5,484 | 35332805 |
| 537083 | Oct 8, 2003 | Oct 8, 2003 | Pioneer Exploration, Ltd. | Nolan | Billie Hanks a/B Unit #1 | 6,300 | 35332804 |
| 537083Amendment | Oct 8, 2003 | Oct 8, 2003 | Pioneer Exploration, Ltd. | Nolan | Billie Hanks a/B Unit #1 | 6,300 | 35332804 |
| 537069 | Oct 8, 2003 | Oct 8, 2003 | Pioneer Exploration, Ltd. | Montague | Kennedy Lower Conglomerate Unit #502 | 7,500 | 33732981 |
| 537069Amendment | Oct 8, 2003 | Oct 8, 2003 | Pioneer Exploration, Ltd. | Montague | Kennedy, S. W. #502 | 7,206 | 33732981 |
| 537129 | Oct 7, 2003 | Oct 7, 2003 | Pioneer Exploration, Ltd. | Montague | Kennedy Lower Conglomerate Unit #603 | 7,500 | 33733579 |
| 537129Amendment | Oct 7, 2003 | Oct 7, 2003 | Pioneer Exploration, Ltd. | Montague | Kennedy Lower Conglomerate Unit #603 | 7,500 | 33733579 |
| 536859 | Sep 29, 2003 | Sep 29, 2003 | Pioneer Exploration, Ltd. | Nolan | TXL -K- #8 | 6,400 | 35332803 |
| 535179 | Sep 15, 2003 | Sep 15, 2003 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. "A" #15 | 6,250 | 35332796 |
| 536107 | Sep 10, 2003 | Sep 10, 2003 | Pioneer Exploration, Ltd. | Nolan | TXL -K- #7 | 6,400 | 35332705 |
| 535737 | Sep 4, 2003 | Sep 4, 2003 | Pioneer Exploration, Ltd. | Nolan | Petty, R. R. #17 | 6,500 | 35332797 |
| 535737Amendment | Sep 4, 2003 | Sep 4, 2003 | Pioneer Exploration, Ltd. | Nolan | Petty, R. R. #17 | 6,288 | 35332797 |
| 534378 | Aug 28, 2003 | Aug 28, 2003 | Pioneer Exploration, Ltd. | Nolan | Aaa-Texas #2 | 6,500 | 35332795 |
| 533460 | Aug 28, 2003 | Aug 28, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie 'A' #45 | 6,200 | 35332791 |
| 533459 | Jul 25, 2003 | Jul 25, 2003 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H #8 | 6,300 | 35332790 |
| 533458 | Jul 25, 2003 | Jul 25, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie 'A' #48 | 6,300 | 35332789 |
| 533792 | Jul 8, 2003 | Jul 8, 2003 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. #10 | 6,500 | 35332793 |
| 533792Amendment | Jul 8, 2003 | Jul 8, 2003 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. #10 | 6,400 | 35332793 |
| 533548 | Jul 2, 2003 | Jul 2, 2003 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. #9 | 6,500 | 35332792 |
| 533270 | Jun 24, 2003 | Jun 24, 2003 | Pioneer Exploration, Ltd. | Nolan | Jordan, R. H. "A" #9 | 6,250 | 35332693 |
| 533268 | Jun 24, 2003 | Jun 24, 2003 | Pioneer Exploration, Ltd. | Nolan | Aaa-Texas #1 | 6,400 | 35332788 |
| 532830 | Jun 11, 2003 | Jun 11, 2003 | Pioneer Exploration, Ltd. | Nolan | Petty, R. R. #16 | 6,400 | 35332786 |
| 528116 | Apr 8, 2003 | Apr 8, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #27 | 6,029 | 35332489 |
| 528115 | Apr 8, 2003 | Apr 8, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #34 | 6,270 | 35332634 |
| 527943 | Apr 8, 2003 | Apr 8, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #12 | 5,942 | 35300984 |
| 528120 | Apr 7, 2003 | Apr 7, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #44 | 6,222 | 35332757 |
| 528117 | Apr 7, 2003 | Apr 7, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #28 | 6,218 | 35332528 |
| 528063 | Mar 27, 2003 | Mar 27, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #30 | 6,100 | 35332555 |
| 527942 | Mar 21, 2003 | Mar 21, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #19 | 6,054 | 35300991 |
| 528119 | Mar 18, 2003 | Mar 18, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #42 | 6,101 | 35332741 |
| 528118 | Mar 18, 2003 | Mar 18, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #43 | 6,180 | 35332745 |
| 528066 | Mar 18, 2003 | Mar 18, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #3 | 6,034 | 35300972 |
| 528065 | Mar 18, 2003 | Mar 18, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #20 | 5,885 | 35300992 |
| 528064 | Mar 18, 2003 | Mar 18, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #26 | 6,051 | 35332479 |
| 527944 | Mar 18, 2003 | Mar 18, 2003 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #37 | 6,515 | 35332721 |
| 526764 | Jan 27, 2003 | Jan 27, 2003 | Pioneer Exploration, Ltd. | Runnels | Sykes, O. C. #31 | 5,600 | 39934779 |
| 526357 | Dec 19, 2002 | Dec 19, 2002 | Pioneer Exploration, Ltd. | Runnels | Sykes, O. C. #30 | 5,600 | 39934776 |
| 524827 | Nov 20, 2002 | Nov 20, 2002 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #50 | 6,200 | 35332780 |
| 524827Amendment | Nov 20, 2002 | Nov 20, 2002 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #50 | 5,944 | 35332780 |
| 524424 | Nov 20, 2002 | Nov 20, 2002 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #36 | 6,400 | 35332710 |
| 524424Amendment | Nov 20, 2002 | Nov 20, 2002 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #36 | 6,400 | 35332710 |
| 524615 | Oct 22, 2002 | Oct 22, 2002 | Pioneer Exploration, Ltd. | Runnels | Cree Sykes Unit #906 | 5,300 | 39934595 |
| 524616 | Oct 17, 2002 | Oct 17, 2002 | Pioneer Exploration, Ltd. | Runnels | Cree Sykes Unit #8035 | 5,700 | 39934581 |
| 523748 | Sep 19, 2002 | Sep 19, 2002 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #29 | 6,148 | 35332767 |
| 523748Amendment | Sep 19, 2002 | Sep 19, 2002 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #29 | 6,148 | 35332767 |
| 518208 | Mar 11, 2002 | Mar 11, 2002 | Pioneer Exploration, Ltd. | Kent | Wallace, Bilby #901 | 6,850 | 26300720 |
| 516869 | Jan 22, 2002 | Jan 22, 2002 | Pioneer Exploration, Ltd. | Nolan | Roane, Minnie #1 | 6,200 | 35332771 |
| 516869Amendment | Jan 22, 2002 | Jan 22, 2002 | Pioneer Exploration, Ltd. | Nolan | Roane, Minnie #1 | 6,900 | 35332771 |
| 515580 | Nov 27, 2001 | Nov 27, 2001 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "B" #3 | 5,812 | 35300973 |
| 515520 | Nov 20, 2001 | Nov 20, 2001 | Pioneer Exploration, Ltd. | Nolan | TX-Peco #1 | 6,500 | 35332768 |
| 515487 | Nov 20, 2001 | Nov 20, 2001 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #41 | 6,500 | 35332739 |
| 515485 | Nov 20, 2001 | Nov 20, 2001 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "B" #6 | 6,400 | 35332711 |
| 515311 | Nov 13, 2001 | Nov 13, 2001 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #29 | 6,500 | 35332767 |
| 515311Amendment | Nov 13, 2001 | Nov 13, 2001 | Pioneer Exploration, Ltd. | Nolan | Hanks, Billie "A" #29 | 6,500 | 35332767 |
| 510729 | Aug 1, 2001 | Aug 1, 2001 | Pioneer Exploration, Ltd. | Nolan | Petty, R. R. 'A' #1 | 6,000 | 35332573 |
| 510096 | Jul 31, 2001 | Jul 31, 2001 | Pioneer Exploration Company | Nolan | Hanks, Billie 'A' #44 | 6,500 | 35332757 |
| 510091 | Jul 31, 2001 | Jul 31, 2001 | Pioneer Exploration Company | Nolan | Hanks, Billie 'A' #45 | 6,500 | 35332756 |
| 510090 | Jul 31, 2001 | Jul 31, 2001 | Pioneer Exploration Company | Nolan | Hanks, Billie 'A' #47 | 6,500 | 35332755 |
| 510089 | Jul 31, 2001 | Jul 31, 2001 | Pioneer Exploration Company | Nolan | Hanks, Billie 'A' #46 | 6,500 | 35332754 |
| 510088 | Jul 31, 2001 | Jul 31, 2001 | Pioneer Exploration Company | Nolan | Hanks, Billie 'A' #48 | 6,500 | 35332753 |