| 382773 | Jan 4, 1991 | Jan 4, 1991 | Williams, Clayton W., Jr., Inc. | Burleson | E. B. Porter Unit #2H | 9,200 | 05133180 |
| 382732 | Jan 2, 1991 | Jan 2, 1991 | Williams, Clayton W., Jr., Inc. | La Salle | Irvin Ranch "A" #1H | 8,500 | 28331403 |
| 382659 | Dec 21, 1990 | Dec 21, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "G" #1H | 8,300 | 28331401 |
| 382395 | Dec 17, 1990 | Dec 17, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Wright-Avant Unit #1H | 8,000 | 28331398 |
| 382338 | Dec 17, 1990 | Dec 17, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns Heirs #2H | 7,550 | 16332531 |
| 382224 | Dec 12, 1990 | Dec 12, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Porter, E. B. #6H | 8,700 | 05133172 |
| 381998 | Dec 6, 1990 | Dec 6, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Woodward-Burns #2H | 6,600 | 16332940 |
| 381948 | Dec 6, 1990 | Dec 6, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Porter, Steve #1H | 8,900 | 05133168 |
| 381578 | Nov 27, 1990 | Nov 27, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Kain Unit #3H | 6,900 | 16332927 |
| 381504 | Nov 26, 1990 | Nov 26, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Brown, J. S. #2H | 8,900 | 05133159 |
| 380799 | Nov 12, 1990 | Nov 12, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Porter, E. B. #5H | 8,700 | 05133152 |
| 380788 | Nov 9, 1990 | Nov 9, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Mullane #1H | 6,800 | 16332910 |
| 380271 | Oct 29, 1990 | Oct 29, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Gerke Unit #1H | 8,350 | 28331379 |
| 379553 | Oct 22, 1990 | Oct 22, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Porter, E. B. #4H | 8,600 | 05133130 |
| 379352 | Oct 22, 1990 | Oct 22, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Brown, J. S. #1H | 8,450 | 05133127 |
| 379470 | Oct 16, 1990 | Oct 16, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns Heirs #7H | 8,000 | 28331374 |
| 379351 | Oct 12, 1990 | Oct 12, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Scarmardo, Sandyr #1H | 8,300 | 05133128 |
| 378925 | Oct 4, 1990 | Oct 4, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "E" #1H | 8,000 | 28331370 |
| 379350 | Oct 2, 1990 | Oct 2, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Loupot-Cooper Unit #1H | 8,500 | 05133129 |
| 378269 | Sep 24, 1990 | Sep 24, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Avant #2H | 6,950 | 16332856 |
| 378269Amendment | Sep 24, 1990 | Sep 24, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Avant #2H | 6,950 | 16332856 |
| 378188 | Sep 21, 1990 | Sep 21, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Pete Scarmardo Unit #1H | 7,900 | 05133117 |
| 377979 | Sep 17, 1990 | Sep 17, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "H" #3H | 7,900 | 28331361 |
| 377839 | Sep 13, 1990 | Sep 13, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Paradise #2HH | 6,000 | 16332838 |
| 377405 | Sep 5, 1990 | Sep 5, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Kain #2H | 6,900 | 16332826 |
| 377405Amendment | Sep 5, 1990 | Sep 5, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Kain #2H | 6,900 | 16332826 |
| 377408 | Sep 4, 1990 | Sep 4, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Wright, H. R. #2H | 7,900 | 28331358 |
| 377406 | Sep 4, 1990 | Sep 4, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Hildebrand #6H | 7,000 | 16332825 |
| 377354 | Aug 30, 1990 | Aug 30, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Porter, E. B. #1H | 8,550 | 05133110 |
| 377063 | Aug 27, 1990 | Aug 27, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Union Texas Carnes #1H | 6,200 | 16332821 |
| 376862 | Aug 22, 1990 | Aug 22, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns "A" #6H | 7,300 | 16332813 |
| 376861 | Aug 22, 1990 | Aug 22, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns "A" #5H | 7,300 | 16332811 |
| 376860 | Aug 21, 1990 | Aug 21, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns "A" #4H | 7,400 | 16332812 |
| 376860Amendment | Aug 21, 1990 | Aug 21, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns "A" #4H | 7,600 | 16332812 |
| 376482 | Aug 16, 1990 | Aug 16, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Hildebrand #4H | 7,000 | 16332803 |
| 376254 | Aug 6, 1990 | Aug 6, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Paradise #1HH | 6,250 | 16332796 |
| 376254Amendment | Aug 6, 1990 | Aug 6, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Paradise #1HH | 6,150 | 16332796 |
| 376203 | Aug 6, 1990 | Aug 6, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Paul, Alvin M. #3H | 7,800 | 05133095 |
| 376203Amendment | Aug 6, 1990 | Aug 6, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Paul, Alvin M. #3H | 7,800 | 05133095 |
| 376011 | Jul 31, 1990 | Jul 31, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "H" Unit #1H | 8,100 | 28331342 |
| 375954 | Jul 30, 1990 | Jul 30, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns "A" #3H | 7,450 | 16332787 |
| 375696 | Jul 19, 1990 | Jul 19, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Union Texas Hugo #1H | 7,100 | 16332784 |
| 375696Amendment | Jul 19, 1990 | Jul 19, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Union Texas Hugo #1H | 7,100 | 16332784 |
| 375625 | Jul 17, 1990 | Jul 17, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Machann-Hejl Unit #1H | 7,750 | 05133093 |
| 374991 | Jul 3, 1990 | Jul 3, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Baker SWD #4 | 5,515 | 16330391 |
| 374697 | Jun 20, 1990 | Jun 20, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Hildebrand #3H | 6,800 | 16332757 |
| 374696 | Jun 20, 1990 | Jun 20, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Woodward-Burns #1H | 6,650 | 16332756 |
| 374696Amendment | Jun 20, 1990 | Jun 20, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Woodward-Burns #1H | 6,650 | 16332756 |
| 374487 | Jun 15, 1990 | Jun 15, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "B" #1H | 7,700 | 28331330 |
| 374487Amendment | Jun 15, 1990 | Jun 15, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "B" #1H | 7,600 | 28331330 |
| 374486 | Jun 15, 1990 | Jun 15, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Berryman #1H | 6,450 | 16332751 |
| 374486Amendment | Jun 15, 1990 | Jun 15, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Berryman #1H | 6,450 | 16332751 |
| 374486Amendment | Jun 15, 1990 | Jun 15, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Berryman Unit #1H | 6,200 | 16332751 |
| 374414 | Jun 15, 1990 | Jun 15, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Strait #2H | 7,200 | 28331329 |
| 374415 | Jun 14, 1990 | Jun 14, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Howell-Ncnb Unit #1H | 7,000 | 16332749 |
| 374417 | Jun 12, 1990 | Jun 12, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Baker SWD #5 | 5,515 | 16330508 |
| 374416 | Jun 12, 1990 | Jun 12, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | B. K. Trcalek Unit #1H | 7,550 | 05133078 |
| 374416Amendment | Jun 12, 1990 | Jun 12, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | B. K. Trcalek Unit #1H | 7,550 | 05133078 |
| 373618 | May 24, 1990 | May 24, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Hildebrand #2H | 6,800 | 16332736 |
| 373084 | May 10, 1990 | May 10, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "H" Unit #2H | 7,800 | 28331319 |
| 373084Amendment | May 10, 1990 | May 10, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "H" Unit #2H | 7,800 | 28331319 |
| 372972 | May 9, 1990 | May 9, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Fee "A" #14HH | 6,400 | 16332718 |
| 372972Amendment | May 9, 1990 | May 9, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Fee "A" #14HH | 6,400 | 16332718 |
| 372971 | May 9, 1990 | May 9, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Avant #3H | 7,000 | 16332717 |
| 372970 | May 9, 1990 | May 9, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns A #2H | 7,400 | 16332716 |
| 372247 | Apr 18, 1990 | Apr 18, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Nicholson Heirs Unit #2H | 7,000 | 16332702 |
| 372245 | Apr 17, 1990 | Apr 17, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Kincaid #2H | 6,800 | 16332701 |
| 372051 | Apr 13, 1990 | Apr 13, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Kain #1H | 6,900 | 16332699 |
| 372052 | Apr 11, 1990 | Apr 11, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Strait #1H | 7,200 | 28331311 |
| 371015 | Mar 19, 1990 | Mar 19, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "C" #1H | 7,600 | 28331305 |
| 371015Amendment | Mar 19, 1990 | Mar 19, 1990 | Williams, Clayton W., Jr., Inc. | La Salle | Burns "C" #1H | 7,600 | 28331305 |
| 371014 | Mar 15, 1990 | Mar 15, 1990 | Williams, Clayton W., Jr., Inc. | Frio | McClanahan #1H | 7,500 | 16332672 |
| 371014Amendment | Mar 15, 1990 | Mar 15, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Union Texas McClanahan #1H | 7,500 | 16332672 |
| 370410 | Mar 1, 1990 | Mar 1, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Baker, James A. #1H | 6,200 | 16332660 |
| 370410Amendment | Mar 1, 1990 | Mar 1, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Baker, James A. #1H | 6,200 | 16332660 |
| 370410Amendment | Mar 1, 1990 | Mar 1, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Baker, James A. #1H | 6,200 | 16332660 |
| 369466 | Feb 6, 1990 | Feb 6, 1990 | Williams, Clayton W., Jr., Inc. | Burleson | Ryan-Machann Unit #1H | 8,600 | 05133040 |
| 369306 | Feb 2, 1990 | Feb 2, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Hildebrand #1H | 6,800 | 16332639 |
| 369305 | Feb 2, 1990 | Feb 2, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Burns A #1H | 7,300 | 16332638 |
| 369304 | Feb 1, 1990 | Feb 1, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Thompson #2H | 8,000 | 16332637 |
| 369303 | Feb 1, 1990 | Feb 1, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Howell, H. H. #2H | 7,000 | 16332636 |
| 369303Amendment | Feb 1, 1990 | Feb 1, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Howell, H. H. #2H | 7,000 | 16332636 |
| 368496 | Jan 10, 1990 | Jan 10, 1990 | Williams, Clayton W., Jr., Inc. | Frio | Avant #1H | 7,000 | 16332617 |
| 367601 | Dec 15, 1989 | Dec 15, 1989 | Williams, Clayton W., Jr., Inc. | Frio | Kincaid #1H | 7,000 | 16332605 |
| 366598 | Nov 17, 1989 | Nov 17, 1989 | Williams, Clayton W., Jr., Inc. | Frio | Nicholson Heirs #1H | 7,500 | 16332592 |
| 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 |