| 521927 | Jul 19, 2002 | Jul 19, 2002 | Slawson Exploration Company, Inc | San Patricio | Flamenco Rachal #1 | 3,800 | 40932708 |
| 521929 | Jul 18, 2002 | Jul 18, 2002 | Slawson Exploration Company, Inc | San Patricio | Aquila-Svadlenak #1 | 7,350 | 40932709 |
| 520156 | Jul 5, 2002 | Jul 5, 2002 | Slawson Exploration Company, Inc | Jim Wells | Seneca-Scott #2 | 4,000 | 24932414 |
| 521212 | Jun 24, 2002 | Jun 24, 2002 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Floyd #206 | 2,150 | 24932418 |
| 518744 | Apr 15, 2002 | Apr 15, 2002 | Slawson Exploration Company, Inc | Jim Wells | Kickapoo-Shanks #1 | 3,350 | 24932395 |
| 518744Amendment | Apr 15, 2002 | Apr 15, 2002 | Slawson Exploration Company, Inc | Jim Wells | Kickapoo Shanks #1 | 3,350 | 24932395 |
| 516648 | Jan 15, 2002 | Jan 15, 2002 | Slawson Exploration Company, Inc | Jim Wells | Shaeffer Ranch #1 | 6,500 | 24932267 |
| 507983 | Apr 24, 2001 | Apr 24, 2001 | Slawson Exploration Company, Inc | Jim Wells | Kickapoo-Shanks #1 | 3,350 | 24932395 |
| 505653 | Feb 28, 2001 | Feb 28, 2001 | Slawson Exploration Company, Inc | Jim Wells | Stendebach (WI) #2 | 3,900 | 24932382 |
| 504490 | Jan 26, 2001 | Jan 26, 2001 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Lagarto #303 | 5,529 | 24932313 |
| 502708 | Dec 11, 2000 | Dec 11, 2000 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Floyd #203 | 4,950 | 24932307 |
| 501735 | Nov 16, 2000 | Nov 16, 2000 | Slawson Exploration Company, Inc | Jim Wells | Sioux-Adams #1 | 8,150 | 24932369 |
| 501735Amendment | Nov 16, 2000 | Nov 16, 2000 | Slawson Exploration Company, Inc | Jim Wells | Sioux-Adams #1 | 8,150 | 24932369 |
| 501643 | Nov 10, 2000 | Nov 10, 2000 | Slawson Exploration Company, Inc | Jim Wells | Iroquois-Scott #1 | 5,200 | 24932364 |
| 499334 | Sep 12, 2000 | Sep 12, 2000 | Slawson Exploration Company, Inc | Jim Wells | Stendebach (WI) #2 | 3,900 | 24932382 |
| 498162 | Aug 11, 2000 | Aug 11, 2000 | Slawson Exploration Company, Inc | Jim Wells | Seneca Straube Estates #1 | 5,300 | 24932378 |
| 497027 | Jul 13, 2000 | Jul 13, 2000 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Lynx #307 | 5,800 | 24932328 |
| 496077 | Jun 15, 2000 | Jun 15, 2000 | Slawson Exploration Company, Inc | Jim Wells | Rehmet (Neo) #1 | 3,550 | 24932373 |
| 496075 | Jun 15, 2000 | Jun 15, 2000 | Slawson Exploration Company, Inc | Jim Wells | Stendebach (WI) #1 | 4,000 | 24932372 |
| 495484 | Jun 1, 2000 | Jun 1, 2000 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Puma #302 | 6,750 | 24932312 |
| 495485 | May 31, 2000 | May 31, 2000 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Cougar #308 | 6,460 | 24932330 |
| 490752 | Dec 31, 1999 | Dec 31, 1999 | Slawson Exploration Company, Inc | Jim Wells | Sioux-Adams #1 | 8,150 | 24932369 |
| 490246 | Dec 17, 1999 | Dec 17, 1999 | Slawson Exploration Company, Inc | Jim Wells | Sioux-Kelley #1 | 8,150 | 24932368 |
| 489684 | Nov 23, 1999 | Nov 23, 1999 | Slawson Exploration Company, Inc | Jim Wells | Iroquois-Scott #1 | 5,175 | 24932364 |
| 489683 | Nov 23, 1999 | Nov 23, 1999 | Slawson Exploration Company, Inc | Jim Wells | Mendenhall (FH) #1 | 5,250 | 24932365 |
| 487823 | Sep 29, 1999 | Sep 29, 1999 | Slawson Exploration Company, Inc | Jim Wells | Assiniboine-Gaston #1 | 3,600 | 24932360 |
| 487822 | Sep 29, 1999 | Sep 29, 1999 | Slawson Exploration Company, Inc | Jim Wells | Shosone-Cornelius #1 | 5,700 | 24932359 |
| 486867 | Aug 26, 1999 | Aug 26, 1999 | Slawson Exploration Company, Inc | Jim Wells | Apache-Kelley #1 | 3,600 | 24932357 |
| 484261 | May 5, 1999 | May 5, 1999 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Puma #309 | 5,150 | 24932350 |
| 483494 | Mar 29, 1999 | Mar 29, 1999 | Slawson Exploration Company, Inc | Jim Wells | Shaeffer Ranch 'A' #3 | 2,400 | 24901168 |
| 480870 | Nov 13, 1998 | Nov 13, 1998 | Slawson Exploration Company, Inc | McMullen | Pillsbury #1 | 10,600 | 31132412 |
| 480332 | Oct 23, 1998 | Oct 23, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Rowena #301 | 5,000 | 24932311 |
| 478302 | Jul 29, 1998 | Jul 29, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Floyd #205 | 2,400 | 24932331 |
| 478172 | Jul 27, 1998 | Jul 27, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Cougar #308 | 6,460 | 24932330 |
| 477866 | Jul 14, 1998 | Jul 14, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Lynx #307 | 5,800 | 24932328 |
| 476522 | May 22, 1998 | May 22, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Puma #306R | 5,975 | 24932321 |
| 474790 | Mar 31, 1998 | Mar 31, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Puma #306 | 5,975 | 24932317 |
| 473291 | Feb 13, 1998 | Feb 13, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Leopard #304 | 5,100 | 24932315 |
| 471842 | Jan 14, 1998 | Jan 14, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Lagarto #303 | 6,125 | 24932313 |
| 471765 | Jan 14, 1998 | Jan 14, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Puma #302 | 6,750 | 24932312 |
| 471762 | Jan 2, 1998 | Jan 2, 1998 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Rowena #301 | 6,375 | 24932311 |
| 468251 | Oct 7, 1997 | Oct 7, 1997 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Floyd #204 | 2,500 | 24932308 |
| 468153 | Oct 1, 1997 | Oct 1, 1997 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Floyd #203 | 4,950 | 24932307 |
| 462472 | May 20, 1997 | May 20, 1997 | Slawson Exploration Company, Inc | Jim Wells | Shaeffer #A 16 | 4,910 | 24901174 |
| 462471 | May 20, 1997 | May 20, 1997 | Slawson Exploration Company, Inc | Jim Wells | Shaeffer Ranch #L 4 | 5,741 | 24930065 |
| 459948 | Mar 21, 1997 | Mar 21, 1997 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Floyd #202 | 4,995 | 24932289 |
| 459946 | Mar 21, 1997 | Mar 21, 1997 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Floyd #201 | 2,500 | 24932288 |
| 459402 | Mar 11, 1997 | Mar 11, 1997 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Ashley #5 | 6,300 | 24932287 |
| 449205 | Sep 24, 1996 | Sep 24, 1996 | Slawson Exploration Company, Inc | Lipscomb | Akers #3968 | 9,750 | 29532311 |
| 450509 | Jul 22, 1996 | Jul 22, 1996 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Ashley #4 | 5,300 | 24932275 |
| 440923 | Oct 23, 1995 | Oct 23, 1995 | Slawson Exploration Company, Inc | Colorado | Parks #1 | 2,000 | 08931950 |
| 439973 | Sep 28, 1995 | Sep 28, 1995 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Ashley #1 | 4,300 | 24932247 |
| 439972 | Sep 28, 1995 | Sep 28, 1995 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Ashley #2 | 4,400 | 24932248 |
| 439972Amendment | Sep 28, 1995 | Sep 28, 1995 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Ashley #2 | 4,400 | 24932248 |
| 439971 | Sep 25, 1995 | Sep 25, 1995 | Slawson Exploration Company, Inc | Jim Wells | Freeborn-Ashley #3 | 5,100 | 24932249 |
| 429945 | Nov 10, 1994 | Nov 10, 1994 | Slawson Exploration Company, Inc | Lipscomb | PSL #1113 | 9,700 | 29532202 |
| 428425 | Oct 13, 1994 | Oct 13, 1994 | Slawson Exploration Company, Inc | Lipscomb | Akers #2968 | 9,600 | 29532194 |
| 428425Amendment | Oct 13, 1994 | Oct 13, 1994 | Slawson Exploration Company, Inc | Lipscomb | Akers #2968 | 9,600 | 29532194 |
| 420622 | Feb 1, 1994 | Feb 1, 1994 | Slawson Exploration Company, Inc | Lipscomb | Akers 1-968 #1968 | 9,675 | 29532174 |
| 420622Amendment | Feb 1, 1994 | Feb 1, 1994 | Slawson Exploration Company, Inc | Lipscomb | Akers #1968 | 9,675 | 29532174 |
| 369559 | Mar 2, 1990 | Mar 2, 1990 | Slawson Exploration Company, Inc | Lipscomb | Akers #1115 | 9,700 | 29531880 |
| 369559Amendment | Mar 2, 1990 | Mar 2, 1990 | Slawson Exploration Company, Inc | Lipscomb | Akers #1115 | 9,700 | 29531880 |
| 369559Amendment | Mar 2, 1990 | Mar 2, 1990 | Slawson Exploration Company, Inc | Lipscomb | Akers #1115 | 9,700 | 29531880 |
| 362517 | Aug 10, 1989 | Aug 10, 1989 | Slawson Exploration Company, Inc | Ochiltree | Byron #1 | 8,100 | 35731937 |
| 361751 | Jul 31, 1989 | Jul 31, 1989 | Slawson Exploration Company, Inc | Ochiltree | Tevis #1107 | 8,300 | 35731934 |
| 170244 | Aug 26, 1982 | Aug 26, 1982 | Slawson Exploration Company, Inc | Galveston | State Tract 192 #1 | 11,200 | 16730907 |
| 103047 | Dec 22, 1980 | Dec 22, 1980 | Slawson Exploration Company, Inc | Galveston | State Tract 234 #1 | 9,923 | 16730814 |