| Andrews University 25-5 #342-003-42612 | Williams, Clayton Energy, Inc.permit operator | Andrews, TX | Drilled | 11,800 | Feb 8, 2011 | — | — |
| Wilson M. J. #142-335-32542 | Williams Clayton Energy Inc. | Mitchell, TXJameson N. (Ellen) | PluggedOil | 7,500 | Oct 27, 2010 | — | — |
| Supak-Royall Unit #1HZ42-331-33528 | Williams Clayton Energy Inc. | Milam, TXGiddings (Austin Chalk-3) | PluggedOil | 7,000 | Feb 21, 2001 | — | — |
| Porter-Trask #1HZ42-051-33580 | Williams Clayton Energy Inc. | Burleson, TXGiddings (Buda) | PluggedOil | 8,000 | Mar 10, 2000 | — | — |
| Fulton OL Unit #1HZ42-395-30564 | Williams Clayton Energy Inc. | Robertson, TXGiddings (Buda) | PluggedOil | 6,500 | Apr 30, 1998 | — | — |
| Wright H. R. #3HZ42-283-31514 | Williams Clayton Energy Inc. | La Salle, TXBurns Ranch (Buda) | PluggedGas | 11,500 | Sep 11, 1997 | — | — |
| Samuel #1HHZ42-313-30740 | Williams Clayton Energy Inc. | Madison, TXIola (Georgetown) | PluggedOil | 15,000 | Feb 7, 1997 | — | — |
| Porter-Bowden Unit #1HZ42-051-33497 | Williams Clayton Energy Inc. | Burleson, TXGiddings (Austin Chalk-3) | PluggedOil | 7,000 | Dec 22, 1995 | — | — |
| Siegert Unit #1HZ42-395-30439 | Williams Clayton Energy Inc. | Robertson, TXGiddings (Austin Chalk-3) | PluggedOil | 7,500 | Sep 25, 1995 | — | — |
| Carter Est. 1 #242-365-33111 | Williams Clayton Energy Inc. | Panola, TXBethany (Travis Peak Oil) | PluggedOil | 7,000 | Dec 20, 1994 | — | — |
| Wintershall-Arhopulos #1HZ42-041-31564 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Wilcox) | PluggedGas | 12,484 | Dec 9, 1994 | — | — |
| Eagleton Unit #2HZ42-051-33450 | Williams Clayton Energy Inc. | Burleson, TXGiddings (Austin Chalk-3) | PluggedOil | 8,500 | Oct 11, 1994 | — | — |
| Milberger Unit #1HZ42-051-33448 | Williams Clayton Energy Inc. | Burleson, TXGiddings (Austin Chalk-3) | PluggedOil | 8,500 | Oct 4, 1994 | — | — |
| McCabe J.F. -C- #342-335-32393 | Williams Clayton Energy Inc. | Mitchell, TXJameson N. (Odom) | PluggedOil | 7,400 | Sep 26, 1994 | — | — |
| Sealy Smith Unit #2HZ42-051-33413 | Williams Clayton Energy Inc. | Burleson, TXGiddings (Austin Chalk Gas) | PluggedGas | 10,600 | Nov 23, 1993 | — | — |
| Serna #142-131-37796 | Williams Clayton Energy Inc. | Duval, TXWildcat | PluggedOil | 15,500 | Nov 17, 1993 | — | — |
| J.M. Atkins Unit #2HZ42-041-31788 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,800 | Nov 4, 1993 | — | — |
| Morgan #2HZ42-041-31708 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,500 | Nov 3, 1993 | — | — |
| Hostetter #542-311-32785 | Williams Clayton Energy Inc. | McMullen, TXHostetter (Wilcox 10 300 FB-A) | PluggedGas | 14,000 | Oct 28, 1993 | — | — |
| McSwain-Glenn Unit #2HZ42-041-31784 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,300 | Oct 14, 1993 | — | — |
| Hostetter #642-311-32814 | Williams Clayton Energy Inc. | McMullen, TXHostetter (Wilcox 11900) | Not on scheduleGas | 14,000 | Sep 29, 1993 | — | — |
| McSwain-Glenn Unit #1HZ42-041-30620 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,423 | Aug 27, 1993 | — | — |
| Arhopulos-Crenshaw Unit #1HZ42-041-31768 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 11,000 | Aug 19, 1993 | — | — |
| Zwiefel Unit #1HZ42-041-31765 | Williams Clayton Energy Inc. | Brazos, TXKurten (Buda) | PluggedOil | 8,500 | Aug 10, 1993 | — | — |
| J.M. Atkins Unit #1HZ42-041-31758 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,750 | Jul 20, 1993 | — | — |
| Arhopulos T. J. #3HZ42-041-31749 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 11,500 | Jun 2, 1993 | — | — |
| Wise Unit #1HZ42-041-31744 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 9,050 | Apr 30, 1993 | — | — |
| Garza B Unit #1HZ42-041-30594 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 11,222 | Apr 19, 1993 | — | — |
| McDougal-Crant #1HZ42-041-31739 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 9,000 | Apr 9, 1993 | — | — |
| Anderson #4HZ42-041-31717 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 11,850 | Jan 15, 1993 | — | — |
| Arhopulos-Brazos Unit #2-UHZ42-041-31715 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 11,500 | Dec 31, 1992 | — | — |
| Kainer L. A. et al #142-481-32745 | Williams Clayton Energy Inc. | Wharton, TXHutchins-Kubela (Kubela Sand) | PluggedOil | 11,500 | Dec 15, 1992 | — | — |
| Peters Unit #2HZ42-041-31699 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 9,819 | Dec 7, 1992 | — | — |
| McGruder-Anderson Unit #1HZ42-041-31698 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 11,650 | Dec 4, 1992 | — | — |
| Morgan #1HZ42-041-31691 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 9,530 | Nov 18, 1992 | — | — |
| Ashlock Unit #1HZ42-041-31679 | Williams Clayton Energy Inc. | Brazos, TXKurten (Buda) | PluggedOil | 8,023 | Oct 20, 1992 | — | — |
| Anderson-Stephen Unit #3HZ42-041-31680 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,767 | Oct 20, 1992 | — | — |
| Borski-Peters Unit #1HZ42-041-31675 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,100 | Oct 14, 1992 | — | — |
| Hostetter #442-311-32731 | Williams Clayton Energy Inc. | McMullen, TXWildcat | PluggedGas | 13,500 | Oct 8, 1992 | — | — |
| Agnello Lebon #2HZ42-041-31673 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,425 | Sep 24, 1992 | — | — |
| Grant-McDougal Unit #1HZ42-041-31670 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 8,105 | Sep 10, 1992 | — | — |
| Davis Unit #1HZ42-041-31655 | Williams Clayton Energy Inc. | Brazos, TXKurten (Buda) | PluggedOil | 7,840 | Jul 13, 1992 | — | — |
| Anderson #2HZ42-041-31650 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,800 | Jun 29, 1992 | — | — |
| Anderson #1HZ42-041-31603 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,888 | Mar 12, 1992 | — | — |
| Wintershall-Peters Unit #1HZ42-041-31549 | Williams Clayton Energy Inc. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,900 | Oct 31, 1991 | — | — |
| Wintershall-Storey Unit #1HZ42-283-31477 | Williams Clayton Energy Inc. | La Salle, TXPearsall (Austin Chalk) | PluggedOil | 8,650 | Oct 29, 1991 | — | — |
| Wintershall-Kersh Unit a #1HZ42-283-31478 | Williams Clayton Energy Inc. | La Salle, TXPearsall (Austin Chalk) | PluggedOil | 8,650 | Oct 29, 1991 | — | — |
| Burns H-D State Unit #1HZ42-283-31470 | Williams Clayton Energy Inc. | La Salle, TXPearsall (Austin Chalk) | PluggedOil | 7,785 | Oct 23, 1991 | — | — |
| Wintershall-Kersh Unit #1HZ42-283-31454 | Williams Clayton Energy Inc. | La Salle, TXPearsall (Austin Chalk) | PluggedOil | 8,450 | Aug 16, 1991 | — | — |
| Burns E-F Unit a #1HZ42-283-31445 | Williams Clayton Energy Inc. | La Salle, TXPearsall (Austin Chalk) | PluggedOil | 8,200 | Jun 13, 1991 | — | — |