| 617359Amendment | Apr 17, 2006 | Apr 17, 2006 | Patton Exploration, Inc. | Springer 148 #3 | 4,000 | 26932647 |
| 617539 | Apr 13, 2006 | Apr 13, 2006 | Medders Oil Company, Inc. | Pitchfork Yyy #9 | 4,000 | 26932646 |
| 617153 | Apr 10, 2006 | Apr 10, 2006 | Hunt Oil Company | Burnett, S. B. Estate "GG" #22 | 5,920 | 26931194 |
| 616629 | Mar 31, 2006 | Mar 31, 2006 | Ginnings Company | Springer "A" #3 | 3,900 | 26932645 |
| 616627 | Mar 31, 2006 | Mar 31, 2006 | Ginnings Company | Springer "A" #2 | 3,900 | 26932644 |
| 616208 | Mar 29, 2006 | Mar 29, 2006 | Salida Exploration, LLC | "G" Springer #7 | 4,000 | 26932641 |
| 616575 | Mar 28, 2006 | Mar 28, 2006 | Medders Oil Company, Inc. | Pitchfork Ooo #5 | 4,000 | 26932643 |
| 616566 | Mar 28, 2006 | Mar 28, 2006 | Medders Oil Company, Inc. | Pitchfork XXX #5 | 4,000 | 26932642 |
| 616260 | Mar 23, 2006 | Mar 23, 2006 | Wheat, Buck Resources, Inc. | Springer-Wilson 192 #7 | 4,400 | 26932640 |
| 616217 | Mar 22, 2006 | Mar 22, 2006 | Cholla Petroleum, Inc. | Crummy #1 | 4,999 | 26932639 |
| 616076 | Mar 20, 2006 | Mar 20, 2006 | Cholla Petroleum, Inc. | Pitchfork #12 | 4,999 | 26932638 |
| 615937 | Mar 16, 2006 | Mar 16, 2006 | Schalk Oil Company, Inc. | Foster #4 | 4,100 | 26932637 |
| 615937Amendment | Mar 16, 2006 | Mar 16, 2006 | Schalk Oil Company, Inc. | Foster #4 | 4,500 | 26932637 |
| 615440 | Mar 15, 2006 | Mar 15, 2006 | Medders Oil Company, Inc. | Forks GGG #9B | 4,000 | 26932633 |
| 615433 | Mar 15, 2006 | Mar 15, 2006 | Medders Oil Company, Inc. | Forks GGG #8B | 4,000 | 26932632 |
| 615813 | Mar 14, 2006 | Mar 14, 2006 | Cholla Petroleum, Inc. | Pitchfork #15 | 4,999 | 26932636 |
| 615809 | Mar 14, 2006 | Mar 14, 2006 | Patton Exploration, Inc. | Niblo '88-A' #5 | 3,500 | 26932635 |
| 615647 | Mar 10, 2006 | Mar 10, 2006 | Cholla Petroleum, Inc. | Pitchfork #16 | 4,999 | 26932634 |
| 614568 | Feb 22, 2006 | Feb 22, 2006 | Cholla Petroleum, Inc. | Pitchfork #10 | 4,999 | 26932631 |
| 614567 | Feb 21, 2006 | Feb 21, 2006 | Cholla Petroleum, Inc. | Pitchfork #14 | 4,999 | 26932630 |
| 613723 | Feb 13, 2006 | Feb 13, 2006 | Polk Petroleum, Inc. | Niblo 'B' #1 | 3,200 | 26932629 |
| 613555 | Feb 9, 2006 | Feb 9, 2006 | Citori Oil Company, LLC | Ratliff #1 | 6,500 | 26932627 |
| 613850 | Feb 8, 2006 | Feb 8, 2006 | Gunn Oil Company | Burnett LF #1 | 4,000 | 26932628 |
| 613131 | Jan 31, 2006 | Jan 31, 2006 | Medders Oil Company, Inc. | Somervell 6666 FO2 #6 | 3,975 | 26932626 |
| 613121 | Jan 31, 2006 | Jan 31, 2006 | Medders Oil Company, Inc. | Somervell 6666 FO2 #5 | 4,000 | 26932625 |
| 613119 | Jan 31, 2006 | Jan 31, 2006 | Medders Oil Company, Inc. | Somervell 6666 FO2 #4 | 4,000 | 26932624 |
| 612973 | Jan 30, 2006 | Jan 30, 2006 | Medders Oil Company, Inc. | Somervell 6666 FO2 #3 | 4,000 | 26932623 |
| 612308 | Jan 18, 2006 | Jan 18, 2006 | Gunn Oil Company | Burnett SC #1 | 4,000 | 26932622 |
| 610488 | Dec 15, 2005 | Dec 15, 2005 | Schalk Oil Company, Inc. | Foster #3 | 4,000 | 26932621 |
| 610016 | Nov 23, 2005 | Nov 23, 2005 | Cholla Petroleum, Inc. | Pitchfork #11 | 4,999 | 26932620 |
| 609595 | Nov 16, 2005 | Nov 16, 2005 | Gunn Oil Company | Pitchfork NB #4 | 4,200 | 26932619 |
| 609592 | Nov 16, 2005 | Nov 16, 2005 | Gunn Oil Company | Pitchfork NB #5 | 4,200 | 26932618 |
| 609303 | Nov 10, 2005 | Nov 10, 2005 | Trio Consulting & Management,llc | Foster I #2321 | 4,300 | 26932617 |
| 609261 | Nov 9, 2005 | Nov 9, 2005 | Cholla Petroleum, Inc. | Pitchfork #9 | 4,999 | 26932616 |
| 609185 | Nov 8, 2005 | Nov 8, 2005 | Trio Consulting & Management,llc | Foster II #2121 | 4,300 | 26932615 |
| 608850 | Nov 7, 2005 | Nov 7, 2005 | Lytle Creek Operating, Inc. | Bateman -126- #1 | 5,500 | 26932612 |
| 608627 | Oct 28, 2005 | Oct 28, 2005 | Cholla Petroleum, Inc. | Pitchfork #8 | 4,999 | 26932611 |
| 608383 | Oct 28, 2005 | Oct 28, 2005 | Patton Exploration, Inc. | Niblo "88-A" #4 | 3,500 | 26932609 |
| 608538 | Oct 27, 2005 | Oct 27, 2005 | Wheat, Buck Resources, Inc. | Springer Wilson 192 #6 | 4,400 | 26932610 |
| 608342 | Oct 26, 2005 | Oct 26, 2005 | Patton Exploration, Inc. | Springer 169 #1 | 4,000 | 26932608 |
| 608341 | Oct 26, 2005 | Oct 26, 2005 | Patton Exploration, Inc. | Springer 148 #2 | 4,000 | 26932607 |
| 608299 | Oct 21, 2005 | Oct 21, 2005 | Cholla Petroleum, Inc. | Pitchfork #6 | 4,999 | 26932606 |
| 608115 | Oct 19, 2005 | Oct 19, 2005 | Corda Corporation | Masterson #1 | 6,200 | 26932605 |
| 607569 | Oct 11, 2005 | Oct 11, 2005 | Ginnings Company | Springer "A" #1 | 3,900 | 26932604 |
| 607618 | Oct 10, 2005 | Oct 10, 2005 | Gunn Oil Company | Burnett NC #1 | 4,000 | 26932602 |
| 607612 | Oct 10, 2005 | Oct 10, 2005 | Gunn Oil Company | Burnett RP #1 | 4,000 | 26932603 |
| 607507 | Oct 7, 2005 | Oct 7, 2005 | Cholla Petroleum, Inc. | Pitchfork #5 | 4,599 | 26932601 |
| 607378 | Oct 6, 2005 | Oct 6, 2005 | Medders Oil Company, Inc. | Pitchfork Bbbb #1 | 4,000 | 26932600 |
| 607177 | Sep 30, 2005 | Sep 30, 2005 | Medders Oil Company, Inc. | Somervell 6666 FO2 #2 | 4,000 | 26932599 |
| 607016 | Sep 27, 2005 | Sep 27, 2005 | Hunt Oil Company | Burnett, S. B. Estate "GG" #15 | 5,890 | 26931039 |
| 606815 | Sep 26, 2005 | Sep 26, 2005 | Rising Star Energy, L.L.C. | Masterson Ranch #2 | 6,200 | 26932221 |
| 606866 | Sep 23, 2005 | Sep 23, 2005 | Cholla Petroleum, Inc. | Pitchfork #4 | 4,599 | 26932598 |
| 605736 | Sep 1, 2005 | Sep 1, 2005 | Bettis, Boyle & Stovall | Masterson "M-1" Unit #1 | 6,200 | 26932597 |
| 605566 | Aug 29, 2005 | Aug 29, 2005 | Cholla Petroleum, Inc. | Pitchfork #3 | 4,499 | 26932596 |
| 605405 | Aug 24, 2005 | Aug 24, 2005 | Schalk Oil Company, Inc. | Foster #2 | 4,100 | 26932595 |
| 605405Amendment | Aug 24, 2005 | Aug 24, 2005 | Schalk Oil Company, Inc. | Foster #2 | 4,100 | 26932595 |
| 604087 | Jul 28, 2005 | Jul 28, 2005 | Cholla Petroleum, Inc. | Pitchfork #2 | 4,499 | 26932594 |
| 604086 | Jul 28, 2005 | Jul 28, 2005 | Hunt Oil Company | Burnett, S. B. Estate "NA" #87 | 6,500 | 26932593 |
| 603164 | Jul 8, 2005 | Jul 8, 2005 | Gunn Oil Company | Pitchfork NB #3 | 4,500 | 26932592 |
| 602662 | Jun 29, 2005 | Jun 29, 2005 | Medders Oil Company, Inc. | Pitchfork Dddd #4 | 6,000 | 26932591 |
| 602659 | Jun 29, 2005 | Jun 29, 2005 | Medders Oil Company, Inc. | Pitchfork Dddd #3 | 6,000 | 26932590 |
| 602207 | Jun 17, 2005 | Jun 17, 2005 | Medders Oil Company, Inc. | Pitchfork HHH "B" #1 | 4,000 | 26932589 |
| 601947 | Jun 13, 2005 | Jun 13, 2005 | Gunn Oil Company | Pitchfork NB #2 | 4,500 | 26932588 |
| 601854 | Jun 10, 2005 | Jun 10, 2005 | Medders Oil Company, Inc. | Somervell 6666 #9 | 4,000 | 26932587 |
| 601852 | Jun 10, 2005 | Jun 10, 2005 | Medders Oil Company, Inc. | Somervell 6666 #8 | 4,000 | 26932586 |
| 601537 | Jun 10, 2005 | Jun 10, 2005 | Hunt Oil Company | Burnett, S.B. Estate "Wm" #42 | 6,000 | 26932583 |
| 557242Amendment | Jun 8, 2005 | Jun 8, 2005 | Medders Oil Company, Inc. | Pitchfork ZZZ #2 | 3,930 | 26932568 |
| 601718 | Jun 7, 2005 | Jun 7, 2005 | Medders Oil Company, Inc. | Pitchfork XXX #4 | 4,000 | 26932585 |
| 601678 | Jun 7, 2005 | Jun 7, 2005 | Medders Oil Company, Inc. | Somervell 6666 FO2 #1 | 3,954 | 26932584 |
| 601448 | Jun 3, 2005 | Jun 3, 2005 | Wheat, Buck Resources, Inc. | Springer-Wilson 192 #5 | 4,400 | 26932582 |
| 601107 | May 24, 2005 | May 24, 2005 | Salida Exploration, LLC | Springer, G. #6 | 4,000 | 26932581 |
| 600843 | May 18, 2005 | May 18, 2005 | Patton Exploration, Inc. | Niblo "88-A" #3 | 3,500 | 26932580 |
| 600620 | May 13, 2005 | May 13, 2005 | Gunn Oil Company | J.J. Gibson 'A' #5 | 5,000 | 26932579 |
| 600212 | May 6, 2005 | May 6, 2005 | Bridwell Oil Co. | Walker South Gas Unit #1 | 6,500 | 26932578 |
| 600231 | May 5, 2005 | May 5, 2005 | Medders Oil Company, Inc. | Somervell 6666 #7 | 4,000 | 26932577 |
| 600165 | May 5, 2005 | May 5, 2005 | Ross, Dwight M. Drlg. Co., Inc. | Gibson, Darene #4 | 4,600 | 26932576 |
| 600071 | May 3, 2005 | May 3, 2005 | Ginnings Company | Springer 188 #1 | 4,000 | 26932575 |
| 559900 | Apr 15, 2005 | Apr 15, 2005 | Sunoco Pipeline L.P. | Cathodic Protection (TP-18) #105 | 450 | 26932574 |
| 559908 | Apr 4, 2005 | Apr 4, 2005 | Gunn Oil Company | Pitchfork NB #1 | 4,500 | 26932573 |
| 558934 | Mar 14, 2005 | Mar 14, 2005 | Telesis Operating Co., Inc. | Springer -185- #1 | 4,999 | 26932572 |
| 558169 | Feb 24, 2005 | Feb 24, 2005 | Hunt Oil Company | S.B. Burnett Estate "Y" #29 | 5,950 | 26932571 |
| 557514 | Feb 10, 2005 | Feb 10, 2005 | Triumph Exploration, Inc. | Masterson #1 | 6,400 | 26932570 |
| 557514Amendment | Feb 10, 2005 | Feb 10, 2005 | Triumph Exploration, Inc. | Masterson #1 | 6,400 | 26932570 |
| 557245 | Feb 4, 2005 | Feb 4, 2005 | Medders Oil Company, Inc. | Pitchfork Ooo #4 | 4,050 | 26932569 |
| 557242 | Feb 4, 2005 | Feb 4, 2005 | Medders Oil Company, Inc. | Pitchfork ZZZ #2 | 3,930 | 26932568 |
| 557240 | Feb 4, 2005 | Feb 4, 2005 | Medders Oil Company, Inc. | Forks GGG #7 | 3,975 | 26932567 |
| 556988 | Feb 1, 2005 | Feb 1, 2005 | Medders Oil Company, Inc. | Pitchfork Yyy #8 | 4,000 | 26932566 |
| 556985 | Feb 1, 2005 | Feb 1, 2005 | Medders Oil Company, Inc. | Somervell 6666 #6 | 4,000 | 26932565 |
| 556980 | Jan 31, 2005 | Jan 31, 2005 | Medders Oil Company, Inc. | Somervell 6666 #5 | 3,990 | 26932564 |
| 556010 | Jan 11, 2005 | Jan 11, 2005 | Alpine Petroleum | Foster #1 | 3,800 | 26932563 |
| 555549 | Jan 6, 2005 | Jan 6, 2005 | Salida Exploration, LLC | Springer, G. #5 | 3,800 | 26932562 |
| 555284 | Dec 27, 2004 | Dec 27, 2004 | Ginnings Company | Springer 193 #1 | 4,000 | 26932561 |
| 554963 | Dec 16, 2004 | Dec 16, 2004 | Hunt Oil Company | Burnett, S B Estate "N" #30 | 4,998 | 26930836 |
| 554712 | Dec 13, 2004 | Dec 13, 2004 | Medders Oil Company, Inc. | Forks 1 #8 A | 3,930 | 26932559 |
| 554711 | Dec 13, 2004 | Dec 13, 2004 | Medders Oil Company, Inc. | Somervell 6666 #4 | 4,000 | 26932560 |
| 554033 | Nov 23, 2004 | Nov 23, 2004 | Medders Oil Company, Inc. | Pitchfork Yyy #7 | 4,050 | 26932558 |
| 553850 | Nov 18, 2004 | Nov 18, 2004 | Hunt Oil Company | Burnett, S.B. Estate "RRR" #5 | 6,026 | 26931403 |
| 553398 | Nov 12, 2004 | Nov 12, 2004 | Medders Oil Company, Inc. | Pitchfork Ooo #3 | 4,004 | 26932557 |
| 552674 | Oct 29, 2004 | Oct 29, 2004 | Wheat, Buck Resources, Inc. | Springer Wilson 192 #4 | 4,400 | 26932556 |
| 552506 | Oct 20, 2004 | Oct 20, 2004 | Polk Petroleum, Inc. | Pitchfork "B" #1 | 3,990 | 26932555 |