| San Pedro Ranch #75642-127-32933 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,550 | Sep 19, 1990 | — | — |
| San Pedro Ranch #41142-127-32934 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,500 | Sep 19, 1990 | — | — |
| San Pedro Ranch-Conoco #76142-127-32935 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,500 | Sep 19, 1990 | — | — |
| University 16-18 #142-371-36274 | Prime Operating Company | Pecos, TXSherbino Creek (Devonian) | PluggedOil | 7,000 | Sep 14, 1990 | — | — |
| San Pedro Ranch DS #21442-127-31850 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,000 | Aug 29, 1990 | — | — |
| San Pedro Ranch #102342-127-31990 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,000 | Aug 29, 1990 | — | — |
| Pipeline 57 #142-235-32946 | Prime Operating Company | Irion, TXHondo Pipeline (Ellenburger) | PluggedOil | 10,000 | Jul 5, 1990 | — | — |
| San Pedro Ranch #31542-127-31752 | Prime Operating Company | Dimmit, TXHugh Fitzsimons (Olmos) | PluggedGas | 4,000 | Jun 8, 1990 | — | — |
| San Pedro Ranch DS #151442-127-32479 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,000 | Jun 8, 1990 | — | — |
| San Pedro Ranch #203642-127-32588 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,050 | Apr 23, 1990 | — | — |
| San Pedro Ranch #43542-127-32685 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,050 | Apr 23, 1990 | — | — |
| San Pedro Ranch #83542-127-32710 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,050 | Apr 23, 1990 | — | — |
| Garcia F. et al #442-131-37298 | Prime Operating Company | Duval, TXEl Mesquite (5200) | PluggedGas | 6,000 | Dec 14, 1989 | — | — |
| Knight Sam Unit a #4 L42-289-31041 | Prime Operating Company | Leon, TXAlabama Ferry (Glenrose D West) | PluggedGas | 9,125 | Oct 26, 1989 | — | — |
| Germer C.F. a #342-131-37278 | Prime Operating Company | Duval, TXEl Mesquite (3000) | PluggedOil | 6,000 | Sep 29, 1989 | — | — |
| Pena-Valdez Gas Unit No. 1 #142-131-37226 | Prime Operating Company | Duval, TXEl Mesquite (5200) | PluggedGas | 6,000 | Apr 28, 1989 | — | — |
| Hellen Dana a #142-247-31856 | Prime Operating Company | Jim Hogg, TXEl Mesquite (5200) | PluggedGas | 6,000 | Mar 31, 1989 | — | — |
| Garcia F. et al #342-131-37208 | Prime Operating Company | Duval, TXEl Mesquite (5200) | PluggedOil | 6,000 | Mar 17, 1989 | — | — |
| Benavides Cleo a #142-131-37192 | Prime Operating Company | Duval, TXEl Mesquite (5200) | PluggedOil | 5,500 | Feb 7, 1989 | — | — |
| Knight Sam Unit B #342-289-31016 | Prime Operating Company | Leon, TXAlabama Ferry (Glenrose D West) | PluggedGas | 9,500 | Jan 18, 1989 | — | — |
| Garcia F. et al #242-131-37177 | Prime Operating Company | Duval, TXEl Mesquite (5200) | PluggedOil | 6,000 | Nov 23, 1988 | — | — |
| Germer C.F. -a- #142-131-37174 | Prime Operating Company | Duval, TXEl Mesquite (3100) | PluggedGas | 6,000 | Nov 18, 1988 | — | — |
| San Pedro Ranch #31642-127-31847 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,000 | Oct 3, 1988 | — | — |
| Garcia F. et al #142-131-37148 | Prime Operating Company | Duval, TXEl Mesquite (5200) | PluggedOil | 6,500 | Sep 7, 1988 | — | — |
| Williams Troy #1D42-105-10369 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,260 | Aug 1, 1988 | — | — |
| Sam Knight Unit #242-289-30998 | Prime Operating Company | Leon, TXAlabama Ferry (Glenrose D West) | PluggedOil | 9,500 | Jul 18, 1988 | — | — |
| Cowden -29- #142-135-35876 | Prime Operating Company | Ector, TXCowden (Cisco) | PluggedOil | 9,300 | Apr 11, 1988 | — | — |
| San Pedro Ranch-Conoco #136242-127-32697 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,050 | Mar 28, 1988 | — | — |
| San Pedro Ranch-Conoco #106242-127-32670 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,050 | Mar 23, 1988 | — | — |
| Cowden -32- #242-135-35848 | Prime Operating Company | Ector, TXCowden (Cisco) | PluggedOil | 9,300 | Feb 23, 1988 | — | — |
| Trap O. B. #242-105-35500 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,300 | Feb 18, 1988 | — | — |
| San Pedro Ranch #14142-127-32579 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,050 | Feb 10, 1988 | — | — |
| San Pedro Ranch #13942-323-32246 | Prime Operating Company | Maverick, TXHugh Fitzsimons (Olmos) | PluggedGas | 4,050 | Feb 10, 1988 | — | — |
| Knight Sam #142-289-30975 | Prime Operating Company | Leon, TXAlabama Ferry (Glenrose D West) | PluggedGas | 9,500 | Feb 8, 1988 | — | — |
| San Pedro Ranch #457A42-127-32673 | Prime Operating Company | Dimmit, TXHugh Fitzsimmons (San Miguel) | PluggedOil | 4,050 | Feb 3, 1988 | — | — |
| Brewer 33 #442-105-35147 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,100 | Jan 28, 1988 | — | — |
| Cowden -32- #142-135-35679 | Prime Operating Company | Ector, TXCowden (Cisco) | PluggedOil | 9,300 | Oct 27, 1987 | — | — |
| Brewer 33 #342-105-35442 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,200 | Oct 6, 1987 | — | — |
| Sherman-Wakefield #242-289-30940 | Prime Operating Company | Leon, TXAlabama Ferry (Glenrose D West) | PluggedGas | 11,350 | Sep 14, 1987 | — | — |
| Neste-Strain -18- #142-317-33460 | Prime Operating Company | Martin, TXSpraberry (Trend Area) | PluggedOil | 11,400 | Sep 14, 1987 | — | — |
| Trap O. B. #142-105-35435 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,200 | Sep 9, 1987 | — | — |
| Dove Patch a #142-503-39554 | Prime Operating Company | Young, TXWiley (Miss.) | PluggedOil | 4,500 | Jul 14, 1987 | — | — |
| Brewer 16 #142-105-35391 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,200 | Jul 2, 1987 | — | — |
| Brewer 33 #242-105-35386 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,200 | Jun 22, 1987 | — | — |
| Sherman-Wakefield #142-289-30911 | Prime Operating Company | Leon, TXAlabama Ferry (Glenrose D West) | PluggedGas | 11,200 | Jun 15, 1987 | — | — |
| Holt #13642-105-35368 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,100 | May 27, 1987 | — | — |
| Fitzsimons Hugh A. et al Z #1146B42-127-32776 | Prime Operating Company | Dimmit, TXSan Pedro | PluggedOil | 3,400 | May 26, 1987 | — | — |
| Holt 36 #242-105-35341 | Prime Operating Company | Crockett, TXHolt Ranch (Ellenburger) | PluggedOil | 8,500 | Mar 24, 1987 | — | — |
| University No. 1-20 #12042-003-35726 | Prime Operating Company | Andrews, TXAndrews South (Wolfcamp) | PluggedOil | 9,500 | Feb 3, 1987 | — | — |
| University #302542-003-35722 | Prime Operating Company | Andrews, TXAndrews South (Wolfcamp) | PluggedOil | 9,500 | Jan 30, 1987 | — | — |