| 392772 | Oct 17, 1991 | Oct 17, 1991 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "D" #2 | 8,100 | 28331465 |
| 384707 | Feb 15, 1991 | Feb 15, 1991 | Williams, Clayton W., Jr., Inc. | Frio | Avant SWD #1 | 5,100 | 16330757 |
| 374991 | Jul 3, 1990 | Jul 3, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Baker SWD #4 | 5,515 | 16330391 |
| 374417 | Jun 12, 1990 | Jun 12, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Baker SWD #5 | 5,515 | 16330508 |
| 365226 | Oct 18, 1989 | Oct 18, 1989 | Williams, Clayton W., Jr., Inc. | Washington | T. A. Low IV Unit #1 | 16,000 | 47730668 |
| 361312 | Jul 12, 1989 | Jul 12, 1989 | Williams, Clayton W., Jr., Inc. | Houston | Parten, Leon #1 | 10,835 | 22530795 |
| 361113 | Jul 7, 1989 | Jul 7, 1989 | Williams, Clayton W., Jr., Inc. | Burleson | See, John #2M | 2,500 | 05133018 |
| 360732 | Jun 28, 1989 | Jun 28, 1989 | Williams, Clayton W., Jr., Inc. | Madison | Heath, J. B. #1 | 10,060 | 31330673 |
| 360498 | Jun 21, 1989 | Jun 21, 1989 | Williams, Clayton W., Jr., Inc. | Brazoria | Tovrea, Allen T. et Al #1 | 13,500 | 03932349 |
| 358935 | May 8, 1989 | May 8, 1989 | Williams, Clayton W., Jr., Inc. | Burleson | A & M #1 | 7,300 | 05133011 |
| 358011 | Apr 24, 1989 | Apr 24, 1989 | Williams, Clayton W., Jr., Inc. | Brazos | Bradley Unit #1 | 5,400 | 04131448 |
| 354356 | Dec 16, 1988 | Dec 16, 1988 | Williams, Clayton W., Jr., Inc. | Brazos | McMullan Unit #1 | 5,400 | 04131442 |
| 352865 | Nov 1, 1988 | Nov 1, 1988 | Williams, Clayton W., Jr., Inc. | Brazos | Schultz Unit #1 | 5,500 | 04131441 |
| 351521 | Oct 4, 1988 | Oct 4, 1988 | Williams, Clayton W., Jr., Inc. | Brazos | Crown Ranch Unit #1 | 4,540 | 04131301 |
| 351388 | Sep 20, 1988 | Sep 20, 1988 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs #16 | 8,000 | 16332569 |
| 351199 | Sep 15, 1988 | Sep 15, 1988 | Williams, Clayton W., Jr., Inc. | Lee | Miertschin, Emil A #1 | 8,400 | 28732208 |
| 351037 | Sep 9, 1988 | Sep 9, 1988 | Williams, Clayton W., Jr., Inc. | La Salle | Burns Heirs #6 | 8,500 | 28331247 |
| 350545 | Aug 26, 1988 | Aug 26, 1988 | Williams, Clayton W., Jr., Inc. | Lee | Willie Zoch Unit A #2 | 9,000 | 28732227 |
| 350545Amendment | Aug 26, 1988 | Aug 26, 1988 | Williams, Clayton W., Jr., Inc. | Lee | Willie Zoch Unit A #2 | 9,000 | 28732227 |
| 349770 | Aug 5, 1988 | Aug 5, 1988 | Williams, Clayton W., Jr., Inc. | La Salle | Wright, H. R. #1 | 8,600 | 28331245 |
| 349768 | Aug 5, 1988 | Aug 5, 1988 | Williams, Clayton W., Jr., Inc. | La Salle | Burns Heirs #5 | 8,500 | 28331246 |
| 347174 | Jun 2, 1988 | Jun 2, 1988 | Williams, Clayton W., Jr., Inc. | Lee | Schmidt, Mamie #4 | 9,600 | 28732214 |
| 347093 | May 31, 1988 | May 31, 1988 | Williams, Clayton W., Jr., Inc. | Lee | Miertschin, Emil #1 | 9,000 | 28732208 |
| 347093Amendment | May 31, 1988 | May 31, 1988 | Williams, Clayton W., Jr., Inc. | Lee | Miertschin, Emil "A" #1 | 9,000 | 28732208 |
| 347092 | May 31, 1988 | May 31, 1988 | Williams, Clayton W., Jr., Inc. | Lee | Krause, A. M. #1 | 9,000 | 28732211 |
| 345889 | Apr 29, 1988 | Apr 29, 1988 | Williams, Clayton W., Jr., Inc. | Frio | Burns Ranch #1 | 8,000 | 16332526 |
| 340675 | Dec 29, 1987 | Dec 29, 1987 | Williams, Clayton W., Jr., Inc. | Lee | R. W. Noack Unit #1 | 9,000 | 28732176 |
| 340675Amendment | Dec 29, 1987 | Dec 29, 1987 | Williams, Clayton W., Jr., Inc. | Lee | R. W. Noack Unit #1 | 9,000 | 28732176 |
| 337313 | Oct 13, 1987 | Oct 13, 1987 | Williams, Clayton W., Jr., Inc. | Frio | Burns Heirs #2 | 7,550 | 16332531 |
| 332641 | Jul 8, 1987 | Jul 8, 1987 | Williams, Clayton W., Jr., Inc. | Leon | Gresham, R. E. #4 | 10,000 | 28930915 |
| 323558 | Jun 17, 1987 | Jun 17, 1987 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs #15 | 7,600 | 16332528 |
| 328059 | Mar 24, 1987 | Mar 24, 1987 | Williams, Clayton W., Jr., Inc. | Leon | Gresham, R. E. #3 | 10,000 | 28930882 |
| 328059Amendment | Mar 24, 1987 | Mar 24, 1987 | Williams, Clayton W., Jr., Inc. | Leon | Gresham, R. E. #3 | 10,000 | 28930882 |
| 328058 | Mar 24, 1987 | Mar 24, 1987 | Williams, Clayton W., Jr., Inc. | Frio | Morales Unit #1 | 7,600 | 16332538 |
| 325783 | Jan 26, 1987 | Jan 26, 1987 | Williams, Clayton W., Jr., Inc. | Leon | Gresham, R. E. #2 | 10,000 | 28930868 |
| 322784 | Nov 7, 1986 | Nov 7, 1986 | Williams, Clayton W., Jr., Inc. | Leon | Gresham, R. E. #1 | 10,500 | 28930841 |
| 320369 | Oct 30, 1986 | Oct 30, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Lewton, Frances #15 | 7,650 | 16332528 |
| 322070 | Oct 22, 1986 | Oct 22, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Burns Heirs #2 | 7,900 | 16332531 |
| 322069 | Oct 22, 1986 | Oct 22, 1986 | Williams, Clayton W., Jr., Inc. | La Salle | Burns Heirs #3 | 7,900 | 28331215 |
| 321078 | Sep 26, 1986 | Sep 26, 1986 | Williams, Clayton W., Jr., Inc. | La Salle | Burns Heirs #1 | 7,700 | 28331213 |
| 321078Amendment | Sep 26, 1986 | Sep 26, 1986 | Williams, Clayton W., Jr., Inc. | La Salle | Burns Heirs #1 | 7,900 | 28331213 |
| 320321 | Sep 9, 1986 | Sep 9, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Burns Ranch #2 | 7,700 | 16332527 |
| 305667 | Aug 26, 1986 | Aug 26, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Burns Ranch #1 | 7,600 | 16332526 |
| 305355 | Aug 18, 1986 | Aug 18, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs #14 | 7,600 | 16332525 |
| 298896 | Mar 4, 1986 | Mar 4, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs #10 | 7,800 | 16332497 |
| 298169 | Feb 20, 1986 | Feb 20, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs #9 | 7,800 | 16332488 |
| 297129 | Feb 6, 1986 | Feb 6, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs "A" #2 | 7,800 | 16332484 |
| 296358 | Jan 28, 1986 | Jan 28, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs #4 | 7,800 | 16332477 |
| 295322 | Jan 14, 1986 | Jan 14, 1986 | Williams, Clayton W., Jr., Inc. | Frio | Shiner Heirs "C" #1 | 8,000 | 16332473 |
| 151704 | Feb 24, 1982 | Feb 24, 1982 | Williams, Clayton W., Jr., Inc. | Burleson | Schultz, Herman #2 | 8,000 | 05132148 |
| 143168 | Dec 8, 1981 | Dec 8, 1981 | Williams, Clayton W., Jr., Inc. | Burleson | Ryan - Hovarak Unit #1 | 12,000 | 05132037 |
| 143166 | Dec 8, 1981 | Dec 8, 1981 | Williams, Clayton W., Jr., Inc. | Fayette | Hackebeil, Wilburn Unit #1 | 11,240 | 14931277 |
| 126625 | Jul 24, 1981 | Jul 24, 1981 | Williams, Clayton W., Jr., Inc. | Burleson | Simpson-Benton Unit A #1 | 12,000 | 05131738 |