| Gilbert Sattler #142-239-30384 | Howell Drilling Inc. | Jackson, TXTexana North (6170) | Not on scheduleGas | 6,500 | Aug 1, 2006 | — | — |
| Menefee #242-239-01704 | Howell Drilling Inc. | Jackson, TXTexana North (5450) | PluggedGas | 7,300 | Apr 11, 2003 | — | — |
| Mascheck L. #142-285-32026 | Howell Drilling Inc. | Lavaca, TXHallettsville (Burns 9600) | PluggedOil | 10,250 | Aug 16, 1988 | — | — |
| Bonorden #142-285-31970 | Howell Drilling Inc. | Lavaca, TXHallettsville East (9800) | PluggedGas | 13,500 | Sep 11, 1986 | — | — |
| City of Hallettsville Unit #1 #242-285-31946 | Howell Drilling Inc. | Lavaca, TXWord N. (8000) | PluggedGas | 10,500 | Oct 25, 1985 | — | — |
| Vaughn A. M. #142-285-31923 | Howell Drilling Inc. | Lavaca, TXBorchers (3650) | PluggedGas | 3,750 | Jun 7, 1985 | — | — |
| Zimmer John #1242-469-30082 | Howell Drilling Inc. | Victoria, TXColetto Creek (1450) | PluggedGas | 2,800 | Jul 2, 1984 | — | — |
| Schmidt R. V. #142-285-31835 | Howell Drilling Inc. | Lavaca, TXJansky (Wilcox) | PluggedGas | 10,800 | Jun 27, 1984 | — | — |
| Langenburg-Turnow Gas Unit #142-285-31545 | Howell Drilling Inc. | Lavaca, TXKinkler (Wilcox 8200) | PluggedGas | 9,000 | Dec 30, 1983 | — | — |
| Wick-Coates Gas Unit #2 #142-285-31400 | Howell Drilling Inc. | Lavaca, TXCharlie Daubert (9700) | PluggedGas | 14,200 | Sep 22, 1983 | — | — |
| New Unit #142-285-31384 | Howell Drilling Inc. | Lavaca, TXHallettsville SW (Ed. 14 400) | PluggedGas | 14,800 | Sep 9, 1983 | — | — |
| Zimmer John #1342-469-31839 | Howell Drilling Inc. | Victoria, TXColetto Creek (4750) | PluggedGas | 4,870 | Jun 8, 1983 | — | — |
| Clark C.A. #142-285-30697 | Howell Drilling Inc. | Lavaca, TXHallettsville (C-8 Sand) | PluggedOil | 8,930 | May 5, 1983 | — | — |
| Bartek A.J. Gas Unit No. 2 #142-089-31363 | Howell Drilling Inc. | Colorado, TXHamel North (9060) | PluggedGas | 9,374 | Dec 31, 1982 | — | — |
| Boothe-Musselman Gas Unit #142-123-31213 | Howell Drilling Inc. | De Witt, TXBalfour (Wilcox 7800) | PluggedGas | 7,900 | Dec 31, 1981 | — | — |
| Nickle Norman E. Gas Unit #142-123-31008 | Howell Drilling Inc. | De Witt, TXGarrett (Yegua 5650) | PluggedGas | 5,800 | Jul 20, 1981 | — | — |
| Hajek Gas Unit No. 2 #142-285-30493 | Howell Drilling Inc. | Lavaca, TXCharlie Daubert (8850) | PluggedGas | 9,678 | Apr 20, 1981 | — | — |
| Zappe Fritz Gas Unit #142-285-30271 | Howell Drilling Inc. | Lavaca, TXCharlie Daubert (8750) | PluggedGas | 9,612 | Mar 10, 1981 | — | — |
| Kuester Ernest #1 T42-123-31089 | Howell Drilling Inc. | De Witt, TXYoakum (Wilcox 7450) | PluggedGas | 7,800 | Aug 7, 1980 | — | — |
| Lay McCord Gas Unit No. 1 #142-285-31491 | Howell Drilling Inc. | Lavaca, TXSweet Home (Edwards) | PluggedGas | 14,800 | May 19, 1980 | — | — |
| Schwartz H.N. et al #242-285-30686 | Howell Drilling Inc. | Lavaca, TXJansky (Wilcox 7900) | PluggedOil | 9,200 | Apr 7, 1980 | — | — |
| Brown Gas Unit #142-285-30679 | Howell Drilling Inc. | Lavaca, TXHallettsville (7100) | PluggedGas | 10,410 | Mar 25, 1980 | — | — |
| Garrett Earl Gas Unit #142-123-31006 | Howell Drilling Inc. | De Witt, TXGarrett (Yegua 5650) | PluggedGas | 5,900 | Aug 23, 1979 | — | — |
| Allnoch #242-239-30394 | Howell Drilling Inc. | Jackson, TXTexana North (5800) | PluggedGas | 7,212 | Aug 20, 1979 | — | — |
| Hesse Ashton et al #242-123-31003 | Howell Drilling Inc. | De Witt, TXGansow (Wilcox Upper) | PluggedOil | 7,466 | Aug 6, 1979 | — | — |
| Garrett A. G. #142-123-31001 | Howell Drilling Inc. | De Witt, TXHelen Gohlke (1700) | PluggedGas | 5,816 | Jul 26, 1979 | — | — |
| Barre-Koenig Gas Unit #142-123-30990 | Howell Drilling Inc. | De Witt, TXAnna Barre N. (Wilcox A) | PluggedGas | 8,050 | Jul 3, 1979 | — | — |
| The Allar Company #242-469-00127 | Howell Drilling Inc. | Victoria, TXSalem (1100) | PluggedGas | 2,150 | Jul 14, 1978 | — | — |
| Reneger E. Gas Unit #142-285-31193 | Howell Drilling Inc. | Lavaca, TXHallettsville (Shallow) | PluggedGas | 10,200 | Sep 6, 1977 | — | — |
| Allar Company the #142-469-30661 | Howell Drilling Inc. | Victoria, TXSalem (2100) | PluggedGas | 2,950 | Jun 20, 1977 | — | — |
| Boothe #142-123-00052 | Howell Drilling Inc. | De Witt, TXBalfour (Wilcox 7800) | PluggedGas | — | — | — | — |
| Menn Evangeline #142-123-00517 | Howell Drilling Inc. | De Witt, TXSmith Creek (Wilcox 10 000) | Not on scheduleGas | — | — | — | — |
| Gips Franz #142-123-00518 | Howell Drilling Inc. | De Witt, TXSmith Creek (Wilcox 10 000) | Not on scheduleGas | — | — | — | — |
| Barre Anna #142-123-30075 | Howell Drilling Inc. | De Witt, TXAnna Barre N. (Wilcox A) | PluggedGas | — | — | — | — |
| Boothe Jack H. #142-123-30228 | Howell Drilling Inc. | De Witt, TXBoothe (3150) | PluggedGas | — | — | — | — |
| Boothe Jack H. #242-123-30333 | Howell Drilling Inc. | De Witt, TXBalfour (Yegua 5350) | Not on scheduleGas | — | — | — | — |
| Boothe Jack -B- #142-123-30400 | Howell Drilling Inc. | De Witt, TXBoothe (3150) | PluggedGas | — | — | — | — |
| 142-123-80027 | Howell Drilling Inc. | De Witt, TXYoakum (Wilcox) | Not on scheduleGas | — | — | — | — |
| 142-239-00740 | Howell Drilling Inc. | Jackson, TXGanado (Marg. B) | Not on scheduleOil | — | — | — | — |
| 2 L42-239-00741 | Howell Drilling Inc. | Jackson, TXGanado (F- 7-B) | Not on scheduleGas | — | — | — | — |
| Gabrysch #5 L42-239-01643 | Howell Drilling Inc. | Jackson, TXGabrysch (5900) | Not on scheduleGas | — | — | — | — |
| 142-239-01697 | Howell Drilling Inc. | Jackson, TXHornbuckle (6800) | Not on scheduleGas | — | — | — | — |
| 242-239-01727 | Howell Drilling Inc. | Jackson, TXLasso (Vicksburg Lower) | Not on scheduleGas | — | — | — | — |
| B 242-239-01860 | Howell Drilling Inc. | Jackson, TXEl Toro (5250) | Not on scheduleGas | — | — | — | — |
| 142-239-01862 | Howell Drilling Inc. | Jackson, TXEl Toro (5060) | Not on scheduleGas | — | — | — | — |
| 242-239-03359 | Howell Drilling Inc. | Jackson, TXEl Toro South (5900 Sd.) | Not on scheduleGas | — | — | — | — |
| 142-239-03647 | Howell Drilling Inc. | Jackson, TXCarmichael (Miocene 2600) | Not on scheduleGas | — | — | — | — |
| 142-239-30009 | Howell Drilling Inc. | Jackson, TXGanado SW. (6400) | Not on scheduleOil | — | — | — | — |
| Menefee Unit #142-239-30598 | Howell Drilling Inc. | Jackson, TXTexana N. (Frio 6310) | PluggedOil | — | — | — | — |
| 142-239-30678 | Howell Drilling Inc. | Jackson, TXTexana North (Frio 6600) | Not on scheduleGas | — | — | — | — |