| 632861 | Feb 5, 2007 | Feb 5, 2007 | Williams Prod. Gulf Coast, L.P. | Denton | Walling #2HH | 9,000 | 12133043 |
| 632861Amendment | Feb 5, 2007 | Feb 5, 2007 | Williams Prod. Gulf Coast, L.P. | Denton | Walling #2HH | 9,000 | 12133043 |
| 632861Amendment | Feb 5, 2007 | Feb 5, 2007 | Williams Prod. Gulf Coast, L.P. | Denton | Walling #2HH | 9,000 | 12133043 |
| 629957 | Dec 15, 2006 | Dec 15, 2006 | Williams Prod. Gulf Coast, L.P. | Wise | Champion A #6V | 7,800 | 49736186 |
| 629957Amendment | Dec 15, 2006 | Dec 15, 2006 | Williams Prod. Gulf Coast, L.P. | Wise | Champion A #6V | 8,100 | 49736186 |
| 629323 | Nov 20, 2006 | Nov 20, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Threemont #3HH | 8,300 | 25131328 |
| 629323Amendment | Nov 20, 2006 | Nov 20, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Threemont #3HH | 8,300 | 25131328 |
| 628849 | Nov 10, 2006 | Nov 10, 2006 | Williams Prod. Gulf Coast, L.P. | Parker | Hutcheson #3HH | 7,000 | 36734236 |
| 628833 | Nov 10, 2006 | Nov 10, 2006 | Williams Prod. Gulf Coast, L.P. | Parker | Hutcheson #2HH | 7,000 | 36734235 |
| 628511 | Nov 7, 2006 | Nov 7, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Crouch Dairy #3HH | 8,000 | 25131307 |
| 628511Amendment | Nov 7, 2006 | Nov 7, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Crouch Dairy #3HH | 8,000 | 25131307 |
| 628505 | Nov 7, 2006 | Nov 7, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Crouch Dairy #2HH | 8,000 | 25131311 |
| 628505Amendment | Nov 7, 2006 | Nov 7, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Crouch Dairy #2HH | 8,000 | 25131311 |
| 628502 | Nov 7, 2006 | Nov 7, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Crouch Dairy #1HH | 8,000 | 25131306 |
| 628325 | Oct 31, 2006 | Oct 31, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Prado #2HH | 8,000 | 25131301 |
| 627645 | Oct 17, 2006 | Oct 17, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Prado #1HH | 8,000 | 25131268 |
| 627645Amendment | Oct 17, 2006 | Oct 17, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Prado #1HH | 8,000 | 25131268 |
| 627602 | Oct 16, 2006 | Oct 16, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #21V | 9,000 | 12132982 |
| 626546 | Oct 4, 2006 | Oct 4, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Taylor #1HH | 8,100 | 25131220 |
| 626098 | Sep 22, 2006 | Sep 22, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #13V | 9,000 | 12132962 |
| 625842 | Sep 13, 2006 | Sep 13, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #12 V | 9,000 | 12132956 |
| 624341 | Aug 21, 2006 | Aug 21, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Creek Park Unit #3HH | 8,000 | 25131138 |
| 624341Amendment | Aug 21, 2006 | Aug 21, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Creek Park #3HH | 7,600 | 25131138 |
| 624330 | Aug 21, 2006 | Aug 21, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Creek Park Unit #1HH | 8,000 | 25131137 |
| 624241 | Aug 17, 2006 | Aug 17, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson #6HH | 8,300 | 12132930 |
| 624241Amendment | Aug 17, 2006 | Aug 17, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson Unit #4 #6HH | 8,300 | 12132930 |
| 624241Amendment | Aug 17, 2006 | Aug 17, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson Unit #4 #6HH | 8,300 | 12132930 |
| 624240 | Aug 17, 2006 | Aug 17, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson #5HH | 8,300 | 12132931 |
| 624240Amendment | Aug 17, 2006 | Aug 17, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson #4 Unit #5HH | 8,300 | 12132931 |
| 624240Amendment | Aug 17, 2006 | Aug 17, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson Unit #4 #5HH | 8,300 | 12132931 |
| 624448 | Aug 16, 2006 | Aug 16, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #11V | 8,700 | 12132934 |
| 624448Amendment | Aug 16, 2006 | Aug 16, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #11V | 8,950 | 12132934 |
| 623460 | Jul 28, 2006 | Jul 28, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Creek Park #2HH | 8,000 | 25131102 |
| 622826 | Jul 26, 2006 | Jul 26, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #20V | 9,000 | 12132907 |
| 620717 | Jun 9, 2006 | Jun 9, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson #4HH | 8,500 | 12132875 |
| 620551 | Jun 7, 2006 | Jun 7, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Bill Brown #2HH | 8,500 | 25131019 |
| 619612 | May 24, 2006 | May 24, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #19V | 8,900 | 12132862 |
| 619612Amendment | May 24, 2006 | May 24, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #19V | 8,900 | 12132862 |
| 619565 | May 19, 2006 | May 19, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #18V | 8,900 | 12132860 |
| 619565Amendment | May 19, 2006 | May 19, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #18V | 8,900 | 12132860 |
| 619565Amendment | May 19, 2006 | May 19, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #18V | 8,900 | 12132860 |
| 618555 | May 2, 2006 | May 2, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #17V | 9,000 | 12132848 |
| 617835 | Apr 19, 2006 | Apr 19, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Shipman #2HH | 8,200 | 25130935 |
| 617324 | Apr 11, 2006 | Apr 11, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Collins #2HH | 8,200 | 25130918 |
| 617324Amendment | Apr 11, 2006 | Apr 11, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Collins "a" Unit #2HH | 8,200 | 25130918 |
| 617177 | Apr 6, 2006 | Apr 6, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Sledge Sisters #1HH | 8,200 | 25130907 |
| 615547 | Mar 9, 2006 | Mar 9, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Bourne #1HH | 8,200 | 25130832 |
| 614689 | Feb 22, 2006 | Feb 22, 2006 | Williams Prod. Gulf Coast, L.P. | Denton | Munson #10V | 8,900 | 12132801 |
| 613422 | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Collins #1HH | 8,200 | 25130770 |
| 613422Amendment | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Collins #1HH | 8,200 | 25130770 |
| 613394 | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Bransom #1HH | 8,300 | 25130769 |
| 613394Amendment | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Bransom #1HH | 8,300 | 25130769 |
| 613315 | Jan 31, 2006 | Jan 31, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Schultz #3 HH | 8,250 | 25130767 |
| 613315Amendment | Jan 31, 2006 | Jan 31, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Ball Heirs #5HH | 8,250 | 25130767 |
| 612992 | Jan 25, 2006 | Jan 25, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Wma #1HH | 8,300 | 25130758 |
| 612992Amendment | Jan 25, 2006 | Jan 25, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Wma #1HH | 8,300 | 25130758 |
| 612031 | Jan 9, 2006 | Jan 9, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Schultz #2HH | 8,200 | 25130723 |
| 612031Amendment | Jan 9, 2006 | Jan 9, 2006 | Williams Prod. Gulf Coast, L.P. | Johnson | Ball Heirs #4HH | 8,200 | 25130723 |
| 610769 | Dec 9, 2005 | Dec 9, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Ball Heirs Joint Venture #3 #3H | 7,200 | 25130678 |
| 609312 | Nov 10, 2005 | Nov 10, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Russell #2HH | 8,100 | 25130629 |
| 609312Amendment | Nov 10, 2005 | Nov 10, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Russell #2HH | 8,100 | 25130629 |
| 608059 | Oct 18, 2005 | Oct 18, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Threemont #2HH | 8,200 | 25130599 |
| 607169 | Sep 30, 2005 | Sep 30, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Pannell #1HH | 8,380 | 25130563 |
| 603385 | Jul 14, 2005 | Jul 14, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Paxton #1H | 7,950 | 25130463 |
| 602140 | Jun 16, 2005 | Jun 16, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Brown, Bill #1H | 8,220 | 25130436 |
| 600887 | May 19, 2005 | May 19, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Russell #1H | 10,770 | 25130407 |
| 557018Amendment | Jan 31, 2005 | Jan 31, 2005 | Williams Prod. Gulf Coast, L.P. | Johnson | Kelly-Rayburn #1HH | 8,900 | 25130320 |
| 556000Amendment | Jan 11, 2005 | Jan 11, 2005 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson No. 2 #2HH | 8,900 | 12132515 |
| 555999Amendment | Jan 11, 2005 | Jan 11, 2005 | Williams Prod. Gulf Coast, L.P. | Denton | Wilson, Sam #1H | 8,900 | 12132514 |
| 555999Amendment | Jan 11, 2005 | Jan 11, 2005 | Williams Prod. Gulf Coast, L.P. | Denton | Sam Wilson #1 Unit #1HH | 8,900 | 12132514 |
| 508372 | May 21, 2001 | May 21, 2001 | Williams Prod. Gulf Coast, L.P. | Jefferson | Pivetot #1 | 8,700 | 24532293 |
| 488432 | Oct 12, 1999 | Oct 12, 1999 | Williams Prod. Gulf Coast, L.P. | Freestone | Hunt #1 | 6,300 | 16131645 |
| 487025 | Aug 26, 1999 | Aug 26, 1999 | Williams Prod. Gulf Coast, L.P. | Leon | Allison #1 | 16,000 | 28931303 |
| 449985Amendment | Jul 2, 1996 | Jul 2, 1996 | Williams Prod. Gulf Coast, L.P. | Leon | Nash #2 | 17,000 | 28931243 |
| 449985Amendment | Jul 2, 1996 | Jul 2, 1996 | Williams Prod. Gulf Coast, L.P. | Leon | Nash #2 | 17,000 | 28931243 |