| Higgins #542-081-30780 | Atapco | Coke, TXHiggins Ranch (Canyon) | PluggedOil | 6,600 | Aug 23, 2013 | — | — |
| Higgins #842-081-30807 | Atapco | Coke, TXHiggins Ranch (Canyon) | PluggedOil | 6,350 | Aug 23, 2013 | — | — |
| Higgins #342-081-30763 | Atapco | Coke, TXHiggins Ranch (Canyon) | PluggedOil | 6,600 | Aug 21, 2013 | — | — |
| Higgins #442-081-30768 | Atapco | Coke, TXHiggins Ranch (Canyon) | PluggedOil | 6,600 | Aug 21, 2013 | — | — |
| Kolle Gas Unit #342-239-32606 | Atapco | Jackson, TXSalem East (3700 Frio) | PluggedGas | 4,800 | Jun 19, 1996 | — | — |
| Cound #142-239-32587 | Atapco | Jackson, TXMorales (2280) | PluggedGas | 5,000 | Sep 7, 1994 | — | — |
| Kolle #242-239-32569 | Atapco | Jackson, TXSalem (3200) | PluggedGas | 5,000 | Aug 4, 1994 | — | — |
| Mahaltic #142-481-33342 | Atapco | Wharton, TXGarwood East (3900) | PluggedGas | 5,500 | Dec 2, 1992 | — | — |
| Diana/Massey Gas Unit #242-469-32838 | Atapco | Victoria, TXSalem (2500) | PluggedGas | 4,800 | Jan 29, 1992 | — | — |
| Diana/Massey #142-469-32839 | Atapco | Victoria, TXQueen Victoria (3500 Frio) | PluggedGas | 4,800 | Aug 14, 1991 | — | — |
| Wesselski #142-089-31835 | Atapco | Colorado, TXLydia (4100) | PluggedGas | 4,413 | May 8, 1991 | — | — |
| Allen #142-469-32848 | Atapco | Victoria, TXGarcitas Creek N. (Frio 4200) | PluggedGas | 5,000 | Apr 23, 1991 | — | — |
| Mican #142-481-33475 | Atapco | Wharton, TXHungerford (Hungerford 3000) | PluggedGas | 4,200 | Feb 4, 1991 | — | — |
| Rose E. T. #142-239-32519 | Atapco | Jackson, TXMorales (2700) | PluggedGas | 7,500 | Dec 11, 1990 | — | — |
| Higginson #142-469-32817 | Atapco | Victoria, TXQueen Victoria (Frio) | PluggedGas | 4,600 | Dec 11, 1990 | — | — |
| Kolle #142-239-32568 | Atapco | Jackson, TXZodiac (Frio) | PluggedGas | 4,800 | Nov 2, 1990 | — | — |
| Svoboda Annie #142-015-30617 | Atapco | Austin, TXBernard N. (Miocene) | PluggedGas | 8,200 | Sep 6, 1990 | — | — |
| Reynolds #142-481-33429 | Atapco | Wharton, TXBonus N. (Miocene) | PluggedGas | 3,000 | Aug 8, 1990 | — | — |
| Duncan #142-481-33376 | Atapco | Wharton, TXLissie South (Frio 4400) | PluggedGas | 5,000 | Apr 23, 1990 | — | — |
| McFarlane et al #142-157-31797 | Atapco | Fort Bend, TXIsaac M. (Frio 4500) | PluggedGas | 5,000 | Mar 23, 1989 | — | — |
| Koehn -C- #1 T42-015-30552 | Atapco | Austin, TXIves (Wilcox 9760) | PluggedGas | 13,535 | Feb 22, 1989 | — | — |
| German Gas Unit #142-239-32075 | Atapco | Jackson, TXMorales (2710) | PluggedGas | 4,445 | Nov 29, 1988 | — | — |
| Labay E.B. #242-239-32408 | Atapco | Jackson, TXJack Starr (Yegua Y-4) | PluggedGas | 10,000 | May 2, 1988 | — | — |
| Thompson J. A. #142-355-00795 | Atapco | Nueces, TXRiverside East (1650) | PluggedGas | 2,750 | Feb 18, 1988 | — | — |
| Thompson Unit #27 L42-355-30310 | Atapco | Nueces, TXRiverside East (2300) | PluggedGas | 8,514 | Apr 3, 1987 | — | — |
| Holzman Heirs Unit #142-015-30109 | Atapco | Austin, TXNew Ulm (Wilcox 9500) | PluggedGas | 10,819 | Jun 4, 1986 | — | — |
| Buch #142-123-31503 | Atapco | De Witt, TXDaniels Ranch (Friar Lower) | PluggedGas | 10,650 | May 8, 1986 | — | — |
| Keenan #242-473-30437 | Atapco | Waller, TXHempstead W. (10400 Wilcox) | PluggedOil | 11,200 | Mar 11, 1986 | — | — |
| Bank of the Southwest #242-291-31968 | Atapco | Liberty, TXCleveland S. (Yegua 6250) | PluggedGas | 7,300 | Dec 23, 1985 | — | — |
| Keenan #142-473-30430 | Atapco | Waller, TXHempstead W. (9750 Wilcox) | PluggedOil | 13,000 | Aug 20, 1985 | — | — |
| Horlacher A. C. #1L42-485-40289 | Atapco | Wichita, TXWichita County Regular | PluggedOil | 1,900 | Feb 19, 1985 | — | — |
| Brandt B #142-015-30547 | Atapco | Austin, TXIves (Wilcox 10750) | PluggedGas | 12,900 | Oct 29, 1984 | — | — |
| Lineberry #30442-301-30532 | Atapco | Loving, TXWheat | PluggedOil | 6,800 | May 1, 1984 | — | — |
| Thompson J.A. #842-355-00781 | Atapco | Nueces, TXRiverside East (5450) | PluggedOil | 6,604 | Jan 17, 1984 | — | — |
| James C. L. a #142-399-31385 | Atapco | Runnels, TXLindemann (Morris Sand) | PluggedOil | 4,000 | Jul 17, 1983 | — | — |
| Spires #14842-353-31396 | Atapco | Nolan, TXSpires (Caddo) | PluggedOil | 7,375 | May 6, 1983 | — | — |
| Linebery #2A42-301-30363 | Atapco | Loving, TXTaffhy (Atoka) | PluggedGas | 22,500 | Mar 31, 1982 | — | — |
| Thompson J. A. #13D42-355-00786 | Atapco | Nueces, TXRiverside East | PluggedOil | 6,307 | Mar 23, 1982 | — | — |
| Reed-Wright B #542-079-31409 | Atapco | Cochran, TXLevelland (San Andres) | PluggedGas | 5,000 | Jun 18, 1981 | — | — |
| Thomas B. E. #142-165-32102 | Atapco | Gaines, TXSeagraves South (San Andres) | PluggedOil | 5,900 | Jun 3, 1981 | — | — |
| Halsell Ranch -E- #4E42-323-31691 | Atapco | Maverick, TXSacatosa (San Miguel #1 Sand) | PluggedOil | 2,100 | Nov 10, 1980 | — | — |
| Halsell Ranch -E- #12E42-323-31695 | Atapco | Maverick, TXSacatosa (San Miguel #1 Sand) | PluggedOil | 2,100 | Nov 10, 1980 | — | — |
| Halsell Ranch -E- #14E42-323-31688 | Atapco | Maverick, TXSacatosa (San Miguel #1 Sand) | PluggedOil | 2,100 | Oct 30, 1980 | — | — |
| Halsell Ranch -E- #16E42-323-31689 | Atapco | Maverick, TXSacatosa (San Miguel #1 Sand) | PluggedOil | 2,100 | Oct 30, 1980 | — | — |
| Krause Edwin #242-015-30467 | Atapco | Austin, TXNew Ulm (Wilcox 10500) | PluggedGas | 10,700 | Oct 17, 1980 | — | — |
| Ellwood Estate #14142-335-31623 | Atapco | Mitchell, TXLucky Strike (Strawn) | PluggedOil | 7,637 | May 28, 1980 | — | — |
| Ellwood W.L. Estate #142-335-30879 | Atapco | Mitchell, TXFairchild (Miss.) | PluggedOil | 7,375 | Apr 4, 1980 | — | — |
| Jones 50 #142-081-30873 | Atapco | Coke, TXBuffalo Spring (Canyon Upper) | PluggedOil | 7,000 | Feb 6, 1980 | — | — |
| McDonald State #142-371-32967 | Atapco | Pecos, TXAtak (Wolfcamp) | PluggedOil | 5,500 | Dec 31, 1979 | — | — |
| University -a- #11642-371-32879 | Atapco | Pecos, TXAtak (Penn Detrital) | PluggedOil | 5,800 | Sep 11, 1979 | — | — |