| 735566 | Mar 20, 2012 | Mar 20, 2012 | Ashtola Exploration Company,inc. | Young | Carr #1 | 1,625 | 50341942 |
| 694819 | Apr 29, 2010 | Apr 29, 2010 | Ashtola Exploration Company,inc. | Young | Frank Daws Estate "1682" #3 | 4,555 | 50336484 |
| 694818 | Apr 29, 2010 | Apr 29, 2010 | Ashtola Exploration Company,inc. | Young | Frank Daws Estate "1682" #1 | 4,548 | 50335768 |
| 690833 | Feb 8, 2010 | Feb 8, 2010 | Ashtola Exploration Company,inc. | Young | Turner Unit #1 | 4,999 | 50341706 |
| 686299 | Oct 20, 2009 | Oct 20, 2009 | Ashtola Exploration Company,inc. | Throckmorton | Brown #1 | 4,649 | 44735145 |
| 684119 | Aug 18, 2009 | Aug 18, 2009 | Ashtola Exploration Company,inc. | Young | F. Daws "1682" #5 | 4,619 | 50337936 |
| 684118 | Aug 17, 2009 | Aug 17, 2009 | Ashtola Exploration Company,inc. | Young | F. Daws "1682" #4 | 4,598 | 50337934 |
| 682647 | Jul 7, 2009 | Jul 7, 2009 | Ashtola Exploration Company,inc. | Young | Nan Daws "1677" #1 | 4,482 | 50337320 |
| 682649 | Jul 2, 2009 | Jul 2, 2009 | Ashtola Exploration Company,inc. | Young | Nan Daws "1677" #2 | 4,668 | 50337368 |
| 674383 | Nov 10, 2008 | Nov 10, 2008 | Ashtola Exploration Company,inc. | Throckmorton | Perkins-Keeter #1 | 4,686 | 44731081 |
| 663227 | Jun 18, 2008 | Jun 18, 2008 | Ashtola Exploration Company,inc. | Throckmorton | Manuel "3011" #1 | 4,945 | 44733538 |
| 663152 | Jun 17, 2008 | Jun 17, 2008 | Ashtola Exploration Company,inc. | Throckmorton | Armstrong "3012" #1 | 4,915 | 44733267 |
| 650150 | Nov 30, 2007 | Nov 30, 2007 | Ashtola Exploration Company,inc. | Maverick | Bandera Alkek #2307H | 2,600 | 32332977 |
| 638662 | May 31, 2007 | May 31, 2007 | Ashtola Exploration Company,inc. | Throckmorton | Lee "1306" #1 | 3,900 | 44735457 |
| 638662Amendment | May 31, 2007 | May 31, 2007 | Ashtola Exploration Company,inc. | Throckmorton | Lee "1306" #1 | 4,552 | 44735457 |
| 554781 | Dec 16, 2004 | Dec 16, 2004 | Ashtola Exploration Company,inc. | Throckmorton | Coker "1688" #4 | 4,800 | 44736143 |
| 552085 | Oct 11, 2004 | Oct 11, 2004 | Ashtola Exploration Company,inc. | Throckmorton | Coker "1688" Unit #3 | 4,900 | 44736140 |
| 547745 | Jul 6, 2004 | Jul 6, 2004 | Ashtola Exploration Company,inc. | Throckmorton | Coker "1688" Unit #2 | 5,000 | 44736129 |
| 530913 | Apr 23, 2003 | Apr 23, 2003 | Ashtola Exploration Company,inc. | Maverick | Alkek #17H | 2,999 | 32332668 |
| 529982 | Mar 31, 2003 | Mar 31, 2003 | Ashtola Exploration Company,inc. | Maverick | Johnston Unit #18H | 2,900 | 32332662 |
| 529007 | Mar 5, 2003 | Mar 5, 2003 | Ashtola Exploration Company,inc. | Maverick | Alkek #16H | 2,900 | 32332659 |
| 525204 | Nov 7, 2002 | Nov 7, 2002 | Ashtola Exploration Company,inc. | Maverick | Bandera Alkek #2316H | 2,900 | 32332646 |
| 524812 | Oct 23, 2002 | Oct 23, 2002 | Ashtola Exploration Company,inc. | Maverick | Alkek #15H | 2,750 | 32332645 |
| 524812Amendment | Oct 23, 2002 | Oct 23, 2002 | Ashtola Exploration Company,inc. | Maverick | Johnston Unit #15H | 2,750 | 32332645 |
| 521100 | Jun 21, 2002 | Jun 21, 2002 | Ashtola Exploration Company,inc. | Maverick | Bandera Alkek #2314 | 12,500 | 32332620 |
| 502858 | Dec 8, 2000 | Dec 8, 2000 | Ashtola Exploration Company,inc. | Maverick | Bandera Alkek #2305 | 12,000 | 32332567 |
| 494312 | May 9, 2000 | May 9, 2000 | Ashtola Exploration Company,inc. | Hardeman | McClellan-Phillips #1 | 8,200 | 19731440 |
| 494312Amendment | May 9, 2000 | May 9, 2000 | Ashtola Exploration Company,inc. | Hardeman | McClellan-Phillips #1 | 8,200 | 19731440 |
| 489603 | Nov 17, 1999 | Nov 17, 1999 | Ashtola Exploration Company,inc. | Maverick | Bandera Alkek #2313 | 5,200 | 32332537 |
| 487218 | Oct 20, 1999 | Oct 20, 1999 | Ashtola Exploration Company,inc. | Hardeman | Grange "B" #1 | 8,500 | 19731454 |
| 487219 | Oct 14, 1999 | Oct 14, 1999 | Ashtola Exploration Company,inc. | Hardeman | St. Germaine #1 | 8,500 | 19731455 |
| 487219Amendment | Oct 14, 1999 | Oct 14, 1999 | Ashtola Exploration Company,inc. | Hardeman | St. Germaine Unit #1H | 8,500 | 19731455 |
| 480240 | Nov 30, 1998 | Nov 30, 1998 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #82 | 4,690 | 44732103 |
| 480644 | Nov 6, 1998 | Nov 6, 1998 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #95 | 4,999 | 44735902 |
| 477147 | Aug 31, 1998 | Aug 31, 1998 | Ashtola Exploration Company,inc. | Hardeman | McClellan-Phillips #1 | 8,500 | 19731440 |
| 474194 | Mar 12, 1998 | Mar 12, 1998 | Ashtola Exploration Company,inc. | Maverick | Alkek "B" #1 | 5,000 | 32332517 |
| 474193 | Mar 12, 1998 | Mar 12, 1998 | Ashtola Exploration Company,inc. | Maverick | Alkek, Equipo #2323 | 5,000 | 32332516 |
| 474192 | Mar 12, 1998 | Mar 12, 1998 | Ashtola Exploration Company,inc. | Hardeman | Pursley #1 | 8,500 | 19730860 |
| 467393 | Oct 10, 1997 | Oct 10, 1997 | Ashtola Exploration Company,inc. | Hardeman | Grange #1 | 8,500 | 19731417 |
| 466102 | Aug 15, 1997 | Aug 15, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #68 | 3,600 | 44702442 |
| 462960 | Jul 11, 1997 | Jul 11, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #61 | 4,999 | 44700592 |
| 462959 | Jul 11, 1997 | Jul 11, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #60 | 4,999 | 44735738 |
| 462954 | Jul 11, 1997 | Jul 11, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #81 | 4,999 | 44704898 |
| 462953 | Jul 11, 1997 | Jul 11, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #91 | 4,999 | 44704289 |
| 462957 | Jul 9, 1997 | Jul 9, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #64 | 4,999 | 44702439 |
| 462956 | Jul 9, 1997 | Jul 9, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #65 | 4,999 | 44702440 |
| 462955 | Jul 2, 1997 | Jul 2, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #66 | 4,999 | 44702441 |
| 462952 | May 30, 1997 | May 30, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #94 | 4,999 | 44735743 |
| 462951 | May 30, 1997 | May 30, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #93 | 4,999 | 44735742 |
| 462951Amendment | May 30, 1997 | May 30, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #93 | 4,999 | 44735742 |
| 462950 | May 30, 1997 | May 30, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #92 | 4,999 | 44735741 |
| 462949 | May 30, 1997 | May 30, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #67 | 4,999 | 44735740 |
| 462948 | May 30, 1997 | May 30, 1997 | Ashtola Exploration Company,inc. | Throckmorton | Greathouse Unit #41 | 4,999 | 44735739 |
| 461110 | Apr 14, 1997 | Apr 14, 1997 | Ashtola Exploration Company,inc. | Maverick | Bandera Alkek #2302 | 3,000 | 32332502 |
| 459889 | Mar 18, 1997 | Mar 18, 1997 | Ashtola Exploration Company,inc. | Hardeman | Holcomb "a" Unit #1 | 8,500 | 19731410 |
| 456498 | Dec 23, 1996 | Dec 23, 1996 | Ashtola Exploration Company,inc. | Throckmorton | Smith #1 | 4,999 | 44735698 |
| 445651 | Mar 7, 1996 | Mar 7, 1996 | Ashtola Exploration Company,inc. | Maverick | Alkek #14 | 6,000 | 32332495 |
| 442977 | Dec 22, 1995 | Dec 22, 1995 | Ashtola Exploration Company,inc. | Maverick | Saner Ranch #2705 | 6,500 | 32332488 |
| 442976 | Dec 22, 1995 | Dec 22, 1995 | Ashtola Exploration Company,inc. | Maverick | Bandera Alkek #2311 | 6,000 | 32332487 |
| 442975 | Dec 22, 1995 | Dec 22, 1995 | Ashtola Exploration Company,inc. | Maverick | Equipo Alkek #2322 | 6,000 | 32332486 |
| 442974 | Dec 22, 1995 | Dec 22, 1995 | Ashtola Exploration Company,inc. | Maverick | Equipo Alkek #2331 | 6,500 | 32332485 |
| 435140 | May 2, 1995 | May 2, 1995 | Ashtola Exploration Company,inc. | Hardeman | Bowes #2359 | 8,500 | 19731332 |
| 434991 | Apr 20, 1995 | Apr 20, 1995 | Ashtola Exploration Company,inc. | Young | Harty-Reedy #1 | 3,200 | 50340656 |
| 430475 | Dec 14, 1994 | Dec 14, 1994 | Ashtola Exploration Company,inc. | Hardeman | Bowes "A" #103 | 10,000 | 19731310 |
| 424478 | Jun 2, 1994 | Jun 2, 1994 | Ashtola Exploration Company,inc. | Maverick | Alkek Unit "A" #1 | 5,500 | 32332469 |
| 422408 | Mar 25, 1994 | Mar 25, 1994 | Ashtola Exploration Company,inc. | Throckmorton | Turner-Brockman "2366" Unit #1 | 3,300 | 44735460 |
| 421598 | Feb 28, 1994 | Feb 28, 1994 | Ashtola Exploration Company,inc. | Throckmorton | Lee "1306" #1 | 4,999 | 44735457 |
| 420791 | Feb 3, 1994 | Feb 3, 1994 | Ashtola Exploration Company,inc. | Throckmorton | Carmack "1693" Unit C #3 | 4,999 | 44735451 |
| 419355 | Dec 15, 1993 | Dec 15, 1993 | Ashtola Exploration Company,inc. | Throckmorton | Coker "1689" #1 | 4,999 | 44735443 |
| 417102 | Oct 14, 1993 | Oct 14, 1993 | Ashtola Exploration Company,inc. | Maverick | Saner Ranch #4 | 3,000 | 32332464 |
| 417101 | Oct 14, 1993 | Oct 14, 1993 | Ashtola Exploration Company,inc. | Maverick | Alkek #12 | 3,000 | 32332463 |
| 416381 | Sep 23, 1993 | Sep 23, 1993 | Ashtola Exploration Company,inc. | Maverick | Alkek #11 | 3,000 | 32332461 |
| 414436 | Aug 9, 1993 | Aug 9, 1993 | Ashtola Exploration Company,inc. | Throckmorton | Carmack "1693", Unit B #2 | 4,999 | 44735402 |
| 413378 | Jun 30, 1993 | Jun 30, 1993 | Ashtola Exploration Company,inc. | Maverick | Alkek #11 | 3,000 | 32332461 |
| 412470 | Jun 4, 1993 | Jun 4, 1993 | Ashtola Exploration Company,inc. | Throckmorton | Coker, Nel Rey "1688" #1 | 4,999 | 44735383 |
| 411487 | May 10, 1993 | May 10, 1993 | Ashtola Exploration Company,inc. | Throckmorton | Carmack "1693" #1 | 4,999 | 44735371 |
| 411487Amendment | May 10, 1993 | May 10, 1993 | Ashtola Exploration Company,inc. | Throckmorton | Carmack "1693", Unit A #1 | 4,728 | 44735371 |
| 411165 | Apr 28, 1993 | Apr 28, 1993 | Ashtola Exploration Company,inc. | Maverick | Alkek #10 | 4,000 | 32332456 |
| 411165Amendment | Apr 28, 1993 | Apr 28, 1993 | Ashtola Exploration Company,inc. | Maverick | Alkek #10 | 2,852 | 32332456 |
| 409998 | Mar 17, 1993 | Mar 17, 1993 | Ashtola Exploration Company,inc. | Maverick | Saner Ranch #3 | 4,000 | 32332455 |
| 406482 | Dec 8, 1992 | Dec 8, 1992 | Ashtola Exploration Company,inc. | Throckmorton | Buckler Trust "233" Unit #1 | 4,645 | 44735063 |
| 401577 | Jul 24, 1992 | Jul 24, 1992 | Ashtola Exploration Company,inc. | Throckmorton | Lee "2358" #1 | 4,999 | 44735288 |
| 401577Amendment | Jul 24, 1992 | Jul 24, 1992 | Ashtola Exploration Company,inc. | Throckmorton | Lee "2358" #1 | 4,999 | 44735288 |
| 399396 | May 27, 1992 | May 27, 1992 | Ashtola Exploration Company,inc. | Throckmorton | Carmack-Young Unit #1 #1 | 4,999 | 44735276 |
| 398860 | Apr 30, 1992 | Apr 30, 1992 | Ashtola Exploration Company,inc. | Young | Turner "2368" #1 | 4,999 | 50340424 |
| 397585 | Mar 17, 1992 | Mar 17, 1992 | Ashtola Exploration Company,inc. | Throckmorton | Timmons "2190" #1 | 4,999 | 44735256 |
| 390476 | Aug 1, 1991 | Aug 1, 1991 | Ashtola Exploration Company,inc. | Throckmorton | Meng "2120" #1 | 4,200 | 44735206 |
| 383223 | Jan 14, 1991 | Jan 14, 1991 | Ashtola Exploration Company,inc. | Wilbarger | Bunch, Floyd #2 | 7,200 | 48732187 |
| 383223Amendment | Jan 14, 1991 | Jan 14, 1991 | Ashtola Exploration Company,inc. | Wilbarger | Floyd Bunch Unit #2 | 5,200 | 48732187 |
| 381133 | Nov 20, 1990 | Nov 20, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Armstrong Unit #3 #3 | 4,999 | 44735153 |
| 380672 | Nov 8, 1990 | Nov 8, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Meng "A" #1R | 7,000 | 44734638 |
| 379161 | Oct 12, 1990 | Oct 12, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Meng, James "A" #2 | 6,000 | 44735130 |
| 377054 | Sep 7, 1990 | Sep 7, 1990 | Ashtola Exploration Company,inc. | Clay | Kerr, Lillian Lyles #1 | 7,000 | 07733557 |
| 375389 | Jul 12, 1990 | Jul 12, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Bellah "2116" #1 | 4,685 | 44734577 |
| 373910 | May 29, 1990 | May 29, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Meng, James "B" #5 | 4,999 | 44735098 |
| 373535 | May 18, 1990 | May 18, 1990 | Ashtola Exploration Company,inc. | Young | Daws, Frank Estate "1680" #8 | 4,999 | 50340159 |
| 370174 | Feb 23, 1990 | Feb 23, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Southland-Young #1 | 4,999 | 44734736 |
| 370174Amendment | Feb 23, 1990 | Feb 23, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Southland-Young #1 | 4,999 | 44734736 |
| 369346 | Feb 2, 1990 | Feb 2, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Meng, James "B" #4 | 4,999 | 44735075 |
| 368236 | Jan 5, 1990 | Jan 5, 1990 | Ashtola Exploration Company,inc. | Throckmorton | Buckler Trust "233" #1 | 4,999 | 44735063 |