| 467617Amendment | Sep 15, 1997 | Sep 15, 1997 | Sonat Exploration Company -Tyler | Leon | Ladd #1 | 15,500 | 28931275 |
| 467616 | Sep 15, 1997 | Sep 15, 1997 | Sonat Exploration Company -Tyler | Shelby | Childress, J. W. #7 | 5,500 | 41930693 |
| 467616Amendment | Sep 15, 1997 | Sep 15, 1997 | Sonat Exploration Company -Tyler | Shelby | Childress, J. W. #7 | 5,500 | 41930693 |
| 467539 | Sep 12, 1997 | Sep 12, 1997 | Sonat Exploration Company -Tyler | Leon | Hodges #1 | 18,500 | 28931274 |
| 467315 | Sep 8, 1997 | Sep 8, 1997 | Sonat Exploration Company -Tyler | Trinity | Champion A-95 #1H | 10,700 | 45530454 |
| 467314 | Sep 8, 1997 | Sep 8, 1997 | Sonat Exploration Company -Tyler | Gregg | D.C. Driggers Gas Unit #5 | 10,797 | 18330935 |
| 467046 | Sep 2, 1997 | Sep 2, 1997 | Sonat Exploration Company -Tyler | Freestone | Adkins #1 | 15,200 | 16131451 |
| 467046Amendment | Sep 2, 1997 | Sep 2, 1997 | Sonat Exploration Company -Tyler | Freestone | Adkins #1 | 15,200 | 16131451 |
| 466900 | Aug 29, 1997 | Aug 29, 1997 | Sonat Exploration Company -Tyler | Cherokee | Little #5 | 11,000 | 07330906 |
| 466900Amendment | Aug 29, 1997 | Aug 29, 1997 | Sonat Exploration Company -Tyler | Cherokee | Little #5 | 11,000 | 07330906 |
| 465621 | Aug 27, 1997 | Aug 27, 1997 | Sonat Exploration Company -Tyler | Panola | Black, C. O. #3 | 9,900 | 36532610 |
| 466712 | Aug 25, 1997 | Aug 25, 1997 | Sonat Exploration Company -Tyler | Cherokee | Little #4 | 11,000 | 07330905 |
| 466401 | Aug 18, 1997 | Aug 18, 1997 | Sonat Exploration Company -Tyler | Leon | Blazek #3X | 15,400 | 28931272 |
| 466401Amendment | Aug 18, 1997 | Aug 18, 1997 | Sonat Exploration Company -Tyler | Leon | Blazek #3X | 15,400 | 28931272 |
| 466400 | Aug 18, 1997 | Aug 18, 1997 | Sonat Exploration Company -Tyler | Red River | Ledbetter #2 | 5,700 | 38730529 |
| 466348 | Aug 15, 1997 | Aug 15, 1997 | Sonat Exploration Company -Tyler | Freestone | Reed GU #4 #4 | 12,300 | 16131354 |
| 466154 | Aug 12, 1997 | Aug 12, 1997 | Sonat Exploration Company -Tyler | Freestone | Sneed Gas Unit #5 | 12,000 | 16131448 |
| 466154Amendment | Aug 12, 1997 | Aug 12, 1997 | Sonat Exploration Company -Tyler | Freestone | Sneed Gas Unit #5 | 11,800 | 16131448 |
| 464936 | Aug 11, 1997 | Aug 11, 1997 | Sonat Exploration Company -Tyler | Red River | Cooper 'B' #10 | 5,700 | 38730522 |
| 465981 | Aug 7, 1997 | Aug 7, 1997 | Sonat Exploration Company -Tyler | Freestone | Northen Gas Unit #7 | 12,000 | 16131447 |
| 465981Amendment | Aug 7, 1997 | Aug 7, 1997 | Sonat Exploration Company -Tyler | Freestone | Northen Gas Unit #7 | 12,000 | 16131447 |
| 465981Amendment | Aug 7, 1997 | Aug 7, 1997 | Sonat Exploration Company -Tyler | Freestone | Northen Gas Unit #7 | 12,000 | 16131447 |
| 464712 | Aug 5, 1997 | Aug 5, 1997 | Sonat Exploration Company -Tyler | Red River | McLean #3 | 5,700 | 38730521 |
| 465558 | Jul 28, 1997 | Jul 28, 1997 | Sonat Exploration Company -Tyler | Panola | Werner, Louis Sawmill Co. #3 | 7,100 | 36532986 |
| 465318 | Jul 23, 1997 | Jul 23, 1997 | Sonat Exploration Company -Tyler | Freestone | Ruby Middleton Gas Unit #5 | 11,450 | 16131443 |
| 465190 | Jul 21, 1997 | Jul 21, 1997 | Sonat Exploration Company -Tyler | Cherokee | Holcomb-Little #6 | 11,000 | 07330903 |
| 465190Amendment | Jul 21, 1997 | Jul 21, 1997 | Sonat Exploration Company -Tyler | Cherokee | Holcomb-Little #6 | 11,000 | 07330903 |
| 464936Amendment | Jul 21, 1997 | Jul 21, 1997 | Sonat Exploration Company -Tyler | Red River | Cooper 'B' #10 | 5,700 | 38730522 |
| 464937 | Jul 15, 1997 | Jul 15, 1997 | Sonat Exploration Company -Tyler | Rusk | Hubbard Gas Unit #1 #8 | 11,000 | 40132737 |
| 464937Amendment | Jul 15, 1997 | Jul 15, 1997 | Sonat Exploration Company -Tyler | Rusk | Hubbard Gas Unit #1 #8 | 11,000 | 40132737 |
| 463841 | Jul 15, 1997 | Jul 15, 1997 | Sonat Exploration Company -Tyler | Panola | Payne #1 | 9,806 | 36532563 |
| 464758 | Jul 10, 1997 | Jul 10, 1997 | Sonat Exploration Company -Tyler | Panola | Thomas Allison Gas Unit #6A | 9,850 | 36533718 |
| 464757 | Jul 10, 1997 | Jul 10, 1997 | Sonat Exploration Company -Tyler | Panola | Thomas Allison Gas Unit #7A | 9,850 | 36533719 |
| 464711 | Jul 9, 1997 | Jul 9, 1997 | Sonat Exploration Company -Tyler | Panola | Furrh et Al #1 | 6,997 | 36531364 |
| 464710 | Jul 9, 1997 | Jul 9, 1997 | Sonat Exploration Company -Tyler | Red River | Cooper C #6 | 5,700 | 38730520 |
| 464709 | Jul 9, 1997 | Jul 9, 1997 | Sonat Exploration Company -Tyler | Red River | Cooper #9 | 5,700 | 38730519 |
| 464709Amendment | Jul 9, 1997 | Jul 9, 1997 | Sonat Exploration Company -Tyler | Red River | Cooper #9 | 5,700 | 38730519 |
| 464708 | Jul 9, 1997 | Jul 9, 1997 | Sonat Exploration Company -Tyler | Red River | Cooper A #7 | 5,700 | 38730518 |
| 464458 | Jul 1, 1997 | Jul 1, 1997 | Sonat Exploration Company -Tyler | Rusk | Childress Gas Unit 2 #7 | 11,000 | 40132731 |
| 464458Amendment | Jul 1, 1997 | Jul 1, 1997 | Sonat Exploration Company -Tyler | Rusk | Childress Gas Unit 2 #7 | 11,000 | 40132731 |
| 464333 | Jun 27, 1997 | Jun 27, 1997 | Sonat Exploration Company -Tyler | Trinity | Cameron A-75 #1H | 10,700 | 45530453 |
| 464243 | Jun 25, 1997 | Jun 25, 1997 | Sonat Exploration Company -Tyler | Panola | Holcombe #7 | 10,020 | 36532769 |
| 463895 | Jun 17, 1997 | Jun 17, 1997 | Sonat Exploration Company -Tyler | Rusk | Childress Gas Unit 2 #9 | 11,000 | 40132729 |
| 463771 | Jun 13, 1997 | Jun 13, 1997 | Sonat Exploration Company -Tyler | Panola | Hogg, Allie Marie #5 | 10,020 | 36532944 |
| 463770 | Jun 13, 1997 | Jun 13, 1997 | Sonat Exploration Company -Tyler | Cherokee | Holcomb-Little #5 | 11,000 | 07330902 |
| 463770Amendment | Jun 13, 1997 | Jun 13, 1997 | Sonat Exploration Company -Tyler | Cherokee | Holcomb-Little #5 | 11,000 | 07330902 |
| 463640 | Jun 11, 1997 | Jun 11, 1997 | Sonat Exploration Company -Tyler | Rusk | Childress Gas Unit 2 #8 | 11,000 | 40132726 |
| 463180 | Jun 2, 1997 | Jun 2, 1997 | Sonat Exploration Company -Tyler | Rusk | Hubbard Gas Unit # 1 #7 | 11,000 | 40132722 |
| 463122 | May 30, 1997 | May 30, 1997 | Sonat Exploration Company -Tyler | Leon | Blazek #5 | 15,000 | 28931267 |
| 463122Amendment | May 30, 1997 | May 30, 1997 | Sonat Exploration Company -Tyler | Leon | Blazek #5 | 15,200 | 28931267 |
| 462066 | May 30, 1997 | May 30, 1997 | Sonat Exploration Company -Tyler | Freestone | Boatmen Trust Co. GU #1 #2 | 9,600 | 16131426 |
| 463010 | May 28, 1997 | May 28, 1997 | Sonat Exploration Company -Tyler | Red River | Cooper #8 | 5,700 | 38730514 |
| 463009 | May 28, 1997 | May 28, 1997 | Sonat Exploration Company -Tyler | Freestone | Lee, Laura #1 | 15,000 | 16131431 |
| 463009Amendment | May 28, 1997 | May 28, 1997 | Sonat Exploration Company -Tyler | Freestone | Lee, Laura #1 | 15,200 | 16131431 |
| 462965 | May 27, 1997 | May 27, 1997 | Sonat Exploration Company -Tyler | Panola | Tiller #5 | 9,900 | 36533686 |
| 462965Amendment | May 27, 1997 | May 27, 1997 | Sonat Exploration Company -Tyler | Panola | Tiller #5 | 9,900 | 36533686 |
| 461711 | May 21, 1997 | May 21, 1997 | Sonat Exploration Company -Tyler | Red River | Odgen #1 | 5,700 | 38730512 |
| 462635 | May 19, 1997 | May 19, 1997 | Sonat Exploration Company -Tyler | Panola | Furrh, J. D. et Al #1A | 9,850 | 36531530 |
| 462634 | May 19, 1997 | May 19, 1997 | Sonat Exploration Company -Tyler | Panola | Chandler Heirs #5 | 9,900 | 36533678 |
| 462634Amendment | May 19, 1997 | May 19, 1997 | Sonat Exploration Company -Tyler | Panola | Chandler Heirs #5 | 9,900 | 36533678 |
| 462373 | May 13, 1997 | May 13, 1997 | Sonat Exploration Company -Tyler | Walker | Morgan Unit A-577 #1H | 12,600 | 47130279 |
| 462373Amendment | May 13, 1997 | May 13, 1997 | Sonat Exploration Company -Tyler | Walker | Morgan Unit A-577 #1H | 12,570 | 47130279 |
| 462195 | May 8, 1997 | May 8, 1997 | Sonat Exploration Company -Tyler | Shelby | Lowe #5 | 8,000 | 41930692 |
| 462195Amendment | May 8, 1997 | May 8, 1997 | Sonat Exploration Company -Tyler | Shelby | Lowe #5 | 8,000 | 41930692 |
| 462195Amendment | May 8, 1997 | May 8, 1997 | Sonat Exploration Company -Tyler | Shelby | Lowe #5 | 8,600 | 41930692 |
| 462067 | May 6, 1997 | May 6, 1997 | Sonat Exploration Company -Tyler | Leon | Blazek #3 | 15,400 | 28931264 |
| 461778 | Apr 29, 1997 | Apr 29, 1997 | Sonat Exploration Company -Tyler | Panola | Payne #2 | 7,000 | 36532805 |
| 460962 | Apr 10, 1997 | Apr 10, 1997 | Sonat Exploration Company -Tyler | Panola | Furrh, J. D. Etal #4A | 9,900 | 36533655 |
| 460962Amendment | Apr 10, 1997 | Apr 10, 1997 | Sonat Exploration Company -Tyler | Panola | Furrh, J. D. Etal #4A | 9,900 | 36533655 |
| 460865 | Apr 8, 1997 | Apr 8, 1997 | Sonat Exploration Company -Tyler | Henderson | Ryon #1 | 15,000 | 21330775 |
| 460691 | Apr 3, 1997 | Apr 3, 1997 | Sonat Exploration Company -Tyler | Grimes | Francklow Unit A-348 #1H | 12,750 | 18530614 |
| 460461 | Mar 28, 1997 | Mar 28, 1997 | Sonat Exploration Company -Tyler | Panola | Bourn #3 | 9,900 | 36533646 |
| 460461Amendment | Mar 28, 1997 | Mar 28, 1997 | Sonat Exploration Company -Tyler | Panola | Bourn #3 | 9,900 | 36533646 |
| 460461Amendment | Mar 28, 1997 | Mar 28, 1997 | Sonat Exploration Company -Tyler | Panola | Bourn #3 | 9,900 | 36533646 |
| 460042 | Mar 18, 1997 | Mar 18, 1997 | Sonat Exploration Company -Tyler | Panola | Chandler Heirs #2 | 7,200 | 36532206 |
| 459916 | Mar 14, 1997 | Mar 14, 1997 | Sonat Exploration Company -Tyler | Grimes | Clary Unit A-39 #1H | 12,850 | 18530611 |
| 459769 | Mar 11, 1997 | Mar 11, 1997 | Sonat Exploration Company -Tyler | Panola | Tiller #4 | 9,900 | 36533628 |
| 459769Amendment | Mar 11, 1997 | Mar 11, 1997 | Sonat Exploration Company -Tyler | Panola | Tiller #4 | 9,900 | 36533628 |
| 459768 | Mar 11, 1997 | Mar 11, 1997 | Sonat Exploration Company -Tyler | Gregg | Sharpe, Dot #2 | 9,200 | 18331280 |
| 459768Amendment | Mar 11, 1997 | Mar 11, 1997 | Sonat Exploration Company -Tyler | Gregg | Sharpe, Dot #2 | 9,200 | 18331280 |
| 459690 | Mar 10, 1997 | Mar 10, 1997 | Sonat Exploration Company -Tyler | Panola | Wiener Estate #5 | 10,000 | 36533627 |
| 458478 | Mar 5, 1997 | Mar 5, 1997 | Sonat Exploration Company -Tyler | Red River | Duncan #2 | 5,700 | 38730505 |
| 457905 | Feb 18, 1997 | Feb 18, 1997 | Sonat Exploration Company -Tyler | Rusk | Childress #7A | 11,000 | 40132697 |
| 456319 | Feb 13, 1997 | Feb 13, 1997 | Sonat Exploration Company -Tyler | Gregg | Holt, J. W. #3 | 9,000 | 18331269 |
| 456912 | Feb 12, 1997 | Feb 12, 1997 | Sonat Exploration Company -Tyler | Leon | Fountain #2 | 15,500 | 28931252 |
| 456912Amendment | Feb 12, 1997 | Feb 12, 1997 | Sonat Exploration Company -Tyler | Leon | Fountain #2 | 15,500 | 28931252 |
| 458479 | Feb 10, 1997 | Feb 10, 1997 | Sonat Exploration Company -Tyler | Grimes | Neason Unit A-39 #1H | 12,000 | 18530604 |
| 458479Amendment | Feb 10, 1997 | Feb 10, 1997 | Sonat Exploration Company -Tyler | Grimes | Neason Unit A-39 #1H | 12,900 | 18530604 |
| 458479Amendment | Feb 10, 1997 | Feb 10, 1997 | Sonat Exploration Company -Tyler | Grimes | Neason Unit A-39 #1H | 12,900 | 18530604 |
| 457968 | Feb 5, 1997 | Feb 5, 1997 | Sonat Exploration Company -Tyler | Freestone | Blanton #2 | 16,500 | 16131408 |
| 457968Amendment | Feb 5, 1997 | Feb 5, 1997 | Sonat Exploration Company -Tyler | Freestone | Blanton #2 | 16,500 | 16131408 |
| 458201 | Feb 4, 1997 | Feb 4, 1997 | Sonat Exploration Company -Tyler | Rusk | Childress #8A | 11,000 | 40132699 |
| 458080 | Jan 31, 1997 | Jan 31, 1997 | Sonat Exploration Company -Tyler | Leon | McAshan #3 | 14,900 | 28931000 |
| 458031 | Jan 30, 1997 | Jan 30, 1997 | Sonat Exploration Company -Tyler | Panola | Keller, C. #4 | 9,800 | 36533598 |
| 458031Amendment | Jan 30, 1997 | Jan 30, 1997 | Sonat Exploration Company -Tyler | Panola | Keller, C. #4 | 9,800 | 36533598 |
| 457699 | Jan 22, 1997 | Jan 22, 1997 | Sonat Exploration Company -Tyler | Lamar | McDowra #1 | 6,500 | 27730116 |
| 457642 | Jan 21, 1997 | Jan 21, 1997 | Sonat Exploration Company -Tyler | Panola | Furrh 'B' #2 | 9,950 | 36533584 |
| 457642Amendment | Jan 21, 1997 | Jan 21, 1997 | Sonat Exploration Company -Tyler | Panola | Furrh 'B' #2 | 9,950 | 36533584 |
| 457641 | Jan 21, 1997 | Jan 21, 1997 | Sonat Exploration Company -Tyler | Panola | Briggs, W. F. #3 | 6,615 | 36531916 |
| 457048 | Jan 6, 1997 | Jan 6, 1997 | Sonat Exploration Company -Tyler | Leon | Morris Lazy K #1 | 17,500 | 28931254 |