| 488250 | Oct 29, 1999 | Oct 29, 1999 | Sonat Exploration Company-MCR | Ochiltree | Campbell #3009 | 7,420 | 35731547 |
| 488086 | Oct 25, 1999 | Oct 25, 1999 | Sonat Exploration Company-MCR | Ochiltree | Campbell #3008 | 7,404 | 35731477 |
| 488031 | Oct 21, 1999 | Oct 21, 1999 | Sonat Exploration Company-MCR | Ochiltree | Tubbs #2907 | 7,400 | 35731759 |
| 487932 | Oct 19, 1999 | Oct 19, 1999 | Sonat Exploration Company-MCR | Ochiltree | Campbell #3007 | 7,400 | 35731734 |
| 487798 | Oct 15, 1999 | Oct 15, 1999 | Sonat Exploration Company-MCR | Ochiltree | Tubbs #2906 | 7,400 | 35731771 |
| 487578 | Oct 7, 1999 | Oct 7, 1999 | Sonat Exploration Company-MCR | Ochiltree | Campbell #3003 | 7,400 | 35731659 |
| 488030 | Sep 28, 1999 | Sep 28, 1999 | Sonat Exploration Company-MCR | Ochiltree | Bruhlman #1704 | 7,600 | 35731735 |
| 487771 | Sep 20, 1999 | Sep 20, 1999 | Sonat Exploration Company-MCR | Ochiltree | Tubbs #2902 | 7,400 | 35731680 |
| 484752 | May 24, 1999 | May 24, 1999 | Sonat Exploration Company-MCR | Ochiltree | Odell-Lamaster #157 | 8,065 | 35702248 |
| 482958 | Apr 26, 1999 | Apr 26, 1999 | Sonat Exploration Company-MCR | Ochiltree | Odell-Lamaster #2 | 8,050 | 35732254 |
| 482958Amendment | Apr 26, 1999 | Apr 26, 1999 | Sonat Exploration Company-MCR | Ochiltree | Odell-Lamaster #257 | 8,050 | 35732254 |
| 482835 | Feb 19, 1999 | Feb 19, 1999 | Sonat Exploration Company-MCR | Ochiltree | Campbell #2030 | 7,400 | 35731607 |
| 481579 | Feb 5, 1999 | Feb 5, 1999 | Sonat Exploration Company-MCR | Hansford | Hart #2 | 7,300 | 19531390 |
| 481579Amendment | Feb 5, 1999 | Feb 5, 1999 | Sonat Exploration Company-MCR | Hansford | Hart #2 | 7,300 | 19531390 |
| 482169 | Jan 21, 1999 | Jan 21, 1999 | Sonat Exploration Company-MCR | Ochiltree | Sellers #5020 | 7,408 | 35731742 |
| 481580 | Jan 8, 1999 | Jan 8, 1999 | Sonat Exploration Company-MCR | Hansford | Lowe #2 | 7,750 | 19531391 |
| 481934 | Jan 7, 1999 | Jan 7, 1999 | Sonat Exploration Company-MCR | Ochiltree | Santa FE Energy #4029 | 7,400 | 35731776 |
| 481521 | Dec 14, 1998 | Dec 14, 1998 | Sonat Exploration Company-MCR | Hansford | Jackson-Wroten #2 | 4,000 | 19531388 |
| 481304 | Dec 4, 1998 | Dec 4, 1998 | Sonat Exploration Company-MCR | Hansford | Beulah #243 | 8,390 | 19531386 |
| 481304Amendment | Dec 4, 1998 | Dec 4, 1998 | Sonat Exploration Company-MCR | Hansford | Beulah #2043 | 8,390 | 19531386 |
| 481132 | Nov 24, 1998 | Nov 24, 1998 | Sonat Exploration Company-MCR | Ochiltree | Santa FE Energy #4030 | 7,400 | 35731612 |
| 477077 | Jun 11, 1998 | Jun 11, 1998 | Sonat Exploration Company-MCR | Hansford | Sheddeck, H. M. #1 | 8,188 | 19500093 |
| 477076 | Jun 11, 1998 | Jun 11, 1998 | Sonat Exploration Company-MCR | Hansford | Kenny Gas Unit #2802 | 8,750 | 19531260 |
| 475346 | Apr 15, 1998 | Apr 15, 1998 | Sonat Exploration Company-MCR | Wheeler | Miller #2 | 16,500 | 48331537 |
| 473752 | Feb 24, 1998 | Feb 24, 1998 | Sonat Exploration Company-MCR | Wheeler | Shelton 26 #1 | 16,500 | 48331531 |
| 471818 | Feb 2, 1998 | Feb 2, 1998 | Sonat Exploration Company-MCR | Wheeler | Texas Strip #2 | 16,470 | 48331524 |
| 471818Amendment | Feb 2, 1998 | Feb 2, 1998 | Sonat Exploration Company-MCR | Wheeler | Texas Strip #2 | 16,470 | 48331524 |
| 470296 | Nov 19, 1997 | Nov 19, 1997 | Sonat Exploration Company-MCR | Ochiltree | Woodruff #171 | 8,700 | 35732199 |
| 469936 | Nov 10, 1997 | Nov 10, 1997 | Sonat Exploration Company-MCR | Ochiltree | Eaton #1502 | 8,700 | 35732097 |
| 464941 | Oct 29, 1997 | Oct 29, 1997 | Sonat Exploration Company-MCR | Hemphill | Lee #3 | 15,000 | 21132242 |
| 469204 | Oct 23, 1997 | Oct 23, 1997 | Sonat Exploration Company-MCR | Wheeler | Shelton #2701 | 16,350 | 48331518 |
| 467045 | Sep 2, 1997 | Sep 2, 1997 | Sonat Exploration Company-MCR | Hemphill | Bowers #2522 | 15,200 | 21132249 |
| 465982 | Aug 7, 1997 | Aug 7, 1997 | Sonat Exploration Company-MCR | Ochiltree | Woodruff #1701 | 8,700 | 35732199 |
| 464861 | Jul 14, 1997 | Jul 14, 1997 | Sonat Exploration Company-MCR | Hemphill | Humphreys #2904 | 11,500 | 21132241 |
| 464570 | Jul 3, 1997 | Jul 3, 1997 | Sonat Exploration Company-MCR | Wheeler | Campbell-Webb #282 | 16,150 | 48331507 |
| 461712 | Apr 28, 1997 | Apr 28, 1997 | Sonat Exploration Company-MCR | Ochiltree | Woodruff #1701 | 8,700 | 35732199 |
| 460041 | Apr 15, 1997 | Apr 15, 1997 | Sonat Exploration Company-MCR | Hansford | Odc #4402 | 8,800 | 19531303 |
| 460041Amendment | Mar 28, 1997 | Mar 28, 1997 | Sonat Exploration Company-MCR | Hansford | Odc #4402 | 8,800 | 19531303 |
| 460041Amendment | Mar 28, 1997 | Mar 28, 1997 | Sonat Exploration Company-MCR | Hansford | Odc Fee #4402 | 9,050 | 19531303 |
| 457829 | Jan 24, 1997 | Jan 24, 1997 | Sonat Exploration Company-MCR | Hansford | McClellan #412 | 7,093 | 19530831 |
| 457640 | Jan 21, 1997 | Jan 21, 1997 | Sonat Exploration Company-MCR | Hansford | Seitz #2 | 5,100 | 19531293 |
| 457640Amendment | Jan 21, 1997 | Jan 21, 1997 | Sonat Exploration Company-MCR | Hansford | Seitz #2 | 5,100 | 19531293 |
| 457639 | Jan 21, 1997 | Jan 21, 1997 | Sonat Exploration Company-MCR | Hansford | McClellan #212 | 7,250 | 19530767 |
| 456424 | Dec 17, 1996 | Dec 17, 1996 | Sonat Exploration Company-MCR | Hansford | Rose #1152 | 4,858 | 19501295 |
| 450367 | Jul 15, 1996 | Jul 15, 1996 | Sonat Exploration Company-MCR | Hansford | Rose #2152 | 7,500 | 19531148 |
| 450364 | Jul 15, 1996 | Jul 15, 1996 | Sonat Exploration Company-MCR | Ochiltree | Odc "D" #1 | 6,658 | 35730318 |
| 447983 | May 10, 1996 | May 10, 1996 | Sonat Exploration Company-MCR | Ochiltree | Wilson #7464 | 6,900 | 35732152 |
| 447436 | May 7, 1996 | May 7, 1996 | Sonat Exploration Company-MCR | Hansford | Kenney #2802 | 8,500 | 19531260 |
| 447436Amendment | May 7, 1996 | May 7, 1996 | Sonat Exploration Company-MCR | Hansford | Kenney #2802 | 8,500 | 19531260 |
| 447436Amendment | May 7, 1996 | May 7, 1996 | Sonat Exploration Company-MCR | Hansford | Kenney #2802 | 8,750 | 19531260 |
| 445474 | Mar 7, 1996 | Mar 7, 1996 | Sonat Exploration Company-MCR | Hansford | Jarvis #1 | 6,380 | 19530081 |
| 445165 | Mar 1, 1996 | Mar 1, 1996 | Sonat Exploration Company-MCR | Ochiltree | Tevis #206 | 3,900 | 35731804 |
| 444459 | Feb 5, 1996 | Feb 5, 1996 | Sonat Exploration Company-MCR | Ochiltree | Clement #114 | 8,500 | 35700180 |
| 439016 | Oct 17, 1995 | Oct 17, 1995 | Sonat Exploration Company-MCR | Hansford | Schiff #3102 | 8,300 | 19531624 |
| 440508 | Oct 3, 1995 | Oct 3, 1995 | Sonat Exploration Company-MCR | Ochiltree | Wilson, D. C. 746-3 #7463 | 8,900 | 35732106 |
| 440508Amendment | Oct 3, 1995 | Oct 3, 1995 | Sonat Exploration Company-MCR | Ochiltree | Wilson, D. C. #7463 | 8,900 | 35732106 |
| 439114 | Sep 13, 1995 | Sep 13, 1995 | Sonat Exploration Company-MCR | Ochiltree | Tubbs #2905 | 7,400 | 35731765 |
| 437630 | Sep 12, 1995 | Sep 12, 1995 | Sonat Exploration Company-MCR | Hansford | Shedeck #402 | 8,500 | 19531230 |
| 438235 | Aug 18, 1995 | Aug 18, 1995 | Sonat Exploration Company-MCR | Ochiltree | Davis, Delbert #8364 | 8,900 | 35732096 |
| 438233 | Aug 18, 1995 | Aug 18, 1995 | Sonat Exploration Company-MCR | Ochiltree | Tubbs #3029 | 7,400 | 35731741 |
| 438072 | Aug 16, 1995 | Aug 16, 1995 | Sonat Exploration Company-MCR | Ochiltree | Bruhlman #1703 | 8,400 | 35732095 |
| 438294 | Jul 27, 1995 | Jul 27, 1995 | Sonat Exploration Company-MCR | Hansford | Buzzard, G. F. #2 | 9,250 | 19531232 |
| 438234 | Jul 26, 1995 | Jul 26, 1995 | Sonat Exploration Company-MCR | Ochiltree | Eaton #1502 | 8,700 | 35732097 |
| 437630Amendment | Jul 7, 1995 | Jul 7, 1995 | Sonat Exploration Company-MCR | Hansford | Shedeck, H. M. #2 | 8,500 | 19531230 |
| 436730 | Jun 9, 1995 | Jun 9, 1995 | Sonat Exploration Company-MCR | Hemphill | Lockhart #2703 | 11,600 | 21132111 |
| 434983 | May 11, 1995 | May 11, 1995 | Sonat Exploration Company-MCR | Ochiltree | Campbell #3005 | 7,000 | 35731591 |
| 435643 | May 8, 1995 | May 8, 1995 | Sonat Exploration Company-MCR | Ochiltree | Tubbs #2904 | 7,000 | 35732087 |
| 434429 | Apr 26, 1995 | Apr 26, 1995 | Sonat Exploration Company-MCR | Ochiltree | Sellers Gas Unit #2020 | 7,000 | 35731077 |
| 434429Amendment | Apr 26, 1995 | Apr 26, 1995 | Sonat Exploration Company-MCR | Ochiltree | Sellers Gas Unit #2020 | 7,000 | 35731077 |
| 434262 | Mar 28, 1995 | Mar 28, 1995 | Sonat Exploration Company-MCR | Ochiltree | Campbell #3004 | 7,000 | 35732085 |
| 427083 | Aug 17, 1994 | Aug 17, 1994 | Sonat Exploration Company-MCR | Wheeler | Campbell Webb #2802 | 16,250 | 48331507 |
| 427083Amendment | Aug 17, 1994 | Aug 17, 1994 | Sonat Exploration Company-MCR | Wheeler | Campbell Webb #2802 | 16,250 | 48331507 |
| 400397 | Jul 31, 1992 | Jul 31, 1992 | Sonat Exploration Company-MCR | Gregg | Allen, Mary B. #1 | 11,200 | 18330934 |
| 400730 | Jun 30, 1992 | Jun 30, 1992 | Sonat Exploration Company-MCR | Harrison | Abney #1 | 9,879 | 20331164 |
| 400500 | Jun 23, 1992 | Jun 23, 1992 | Sonat Exploration Company-MCR | Rusk | Childress Gas Unit 2 #2 | 11,200 | 40132394 |
| 400498 | Jun 23, 1992 | Jun 23, 1992 | Sonat Exploration Company-MCR | Rusk | Childress Gas Unit 2 #3 | 11,200 | 40132393 |
| 400301 | Jun 17, 1992 | Jun 17, 1992 | Sonat Exploration Company-MCR | Gregg | Spear #5 | 11,200 | 18330933 |
| 399923 | Jun 3, 1992 | Jun 3, 1992 | Sonat Exploration Company-MCR | Panola | Nolan, Clyde E. Jr. #1 | 9,700 | 36532391 |
| 399552 | May 21, 1992 | May 21, 1992 | Sonat Exploration Company-MCR | Gregg | Spear #3 | 1,100 | 18330929 |
| 399552Amendment | May 21, 1992 | May 21, 1992 | Sonat Exploration Company-MCR | Gregg | Spear #3 | 1,100 | 18330929 |
| 398970 | May 5, 1992 | May 5, 1992 | Sonat Exploration Company-MCR | Gregg | Spear #4 | 11,000 | 18330925 |
| 398048 | Apr 27, 1992 | Apr 27, 1992 | Sonat Exploration Company-MCR | Panola | Holcombe #6 | 10,000 | 36532627 |
| 398609 | Apr 21, 1992 | Apr 21, 1992 | Sonat Exploration Company-MCR | Harrison | Wood #1 | 10,200 | 20332122 |
| 398608 | Apr 21, 1992 | Apr 21, 1992 | Sonat Exploration Company-MCR | Panola | Womack #2 | 8,154 | 36531895 |
| 398413 | Apr 15, 1992 | Apr 15, 1992 | Sonat Exploration Company-MCR | Gregg | Spear #2 | 11,200 | 18330923 |
| 398413Amendment | Apr 15, 1992 | Apr 15, 1992 | Sonat Exploration Company-MCR | Gregg | Spear #2 | 11,200 | 18330923 |
| 396743 | Feb 18, 1992 | Feb 18, 1992 | Sonat Exploration Company-MCR | Panola | Alcie Fields #1 | 6,330 | 36531736 |
| 396535 | Feb 10, 1992 | Feb 10, 1992 | Sonat Exploration Company-MCR | Gregg | Pugh Meadows Gas Unit #4 | 10,900 | 18330913 |
| 396123 | Feb 5, 1992 | Feb 5, 1992 | Sonat Exploration Company-MCR | Panola | Black, C. O. #3 | 10,000 | 36532610 |
| 396364 | Jan 31, 1992 | Jan 31, 1992 | Sonat Exploration Company-MCR | Panola | Degaugh, J. O. #1 | 6,800 | 36531095 |
| 396284 | Jan 29, 1992 | Jan 29, 1992 | Sonat Exploration Company-MCR | Smith | Smith, Clyde #1 | 13,500 | 42331362 |
| 395987 | Jan 21, 1992 | Jan 21, 1992 | Sonat Exploration Company-MCR | Harrison | Haddad Gas Unit 1 #2 | 6,500 | 20331793 |
| 395939 | Jan 16, 1992 | Jan 16, 1992 | Sonat Exploration Company-MCR | Freestone | Wiese #1 | 10,250 | 16131175 |
| 395833 | Jan 14, 1992 | Jan 14, 1992 | Sonat Exploration Company-MCR | Panola | Briggs, W. F. #1 | 7,990 | 36531800 |
| 395823 | Jan 13, 1992 | Jan 13, 1992 | Sonat Exploration Company-MCR | Shelby | Stephens, G. H. #4 | 7,600 | 41930646 |
| 395823Amendment | Jan 13, 1992 | Jan 13, 1992 | Sonat Exploration Company-MCR | Shelby | Stephens, G. H. #4 | 8,500 | 41930646 |
| 394910 | Jan 3, 1992 | Jan 3, 1992 | Sonat Exploration Company-MCR | Panola | Guill, J. C. Sr. #2 | 10,000 | 36532599 |
| 395185 | Dec 17, 1991 | Dec 17, 1991 | Sonat Exploration Company-MCR | Gregg | Killingsworth #2 | 11,000 | 18330906 |
| 394910Amendment | Dec 10, 1991 | Dec 10, 1991 | Sonat Exploration Company-MCR | Panola | Guill, J. C. Sr. #2 | 10,000 | 36532599 |
| 394907 | Dec 10, 1991 | Dec 10, 1991 | Sonat Exploration Company-MCR | Harrison | Hammond Estate #3 | 10,000 | 20332079 |