| Laurel O. M. Estate #2542-505-36344 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,725 | Nov 10, 2008 | 1 | Apr 2026 |
| Porras Gas Unit #842-505-36199 | Hilcorp Energy Company only | ZapataCharco (9400) | Temporarily abandonedGas | 10,225 | Jun 25, 2008 | 2 | — |
| Las Ovejas-State #342-505-36163 | Hilcorp Energy Company only | ZapataJennings Ranch (Lobo Cons.) | ActiveGas | 12,569 | May 8, 2008 | 1 | Apr 2026 |
| Leonardo #4942-505-36133 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,150 | Mar 28, 2008 | 1 | Apr 2026 |
| Leonardo #4842-505-36131 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,050 | Mar 27, 2008 | 2 | Apr 2026 |
| Laurel O. M. Estate #2242-505-36110 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 13,442 | Feb 26, 2008 | 1 | Apr 2026 |
| 7A Investments Ltd. GU #142-505-35869 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,000 | May 15, 2007 | 2 | Apr 2026 |
| Laurel O.M. Estate #1742-505-35764 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 11,870 | Jan 19, 2007 | 1 | Apr 2026 |
| Laurel O.M. Estate #1642-505-35765 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 11,830 | Jan 19, 2007 | 1 | Apr 2026 |
| Laurel O. M. Estate #1542-505-35716 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,554 | Oct 23, 2006 | 1 | Apr 2026 |
| Amando #242-505-35686 | Hilcorp Energy Company only | ZapataCharco (9400) | Temporarily abandonedGas | 10,000 | Sep 8, 2006 | 1 | Aug 2013 |
| A. Garza #2342-505-35617 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,300 | Jul 11, 2006 | 1 | Feb 2026 |
| Garza A. #2442-505-35636 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,250 | Jul 3, 2006 | 1 | Apr 2026 |
| Garza A. #2142-505-35567 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,300 | May 22, 2006 | 1 | Apr 2026 |
| Leonardo #242-505-31116 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,514 | Apr 6, 2006 | 3 | Apr 2026 |
| Laurel O. M. Estate #1142-505-35548 | Hilcorp Energy Company only | ZapataJennings Ranch (Lobo Cons.) | ActiveGas | 12,577 | Mar 27, 2006 | 1 | Apr 2026 |
| Laurel O. M. Estate #1042-505-35512 | Hilcorp Energy Company only | ZapataJennings Ranch (Lobo Cons.) | ActiveGas | 12,050 | Feb 21, 2006 | 1 | Apr 2026 |
| El Refugio #242-505-35464 | Hilcorp Energy Company only | ZapataJennings Ranch (Lobo Cons.) | ActiveGas | 11,800 | Jan 4, 2006 | 1 | Apr 2026 |
| Laurel O. M. Estate #942-505-35426 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,000 | Nov 18, 2005 | 1 | Apr 2026 |
| Alfonso #3742-505-35400 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,320 | Nov 15, 2005 | 1 | Apr 2026 |
| Alfonso #3842-505-35401 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,320 | Nov 15, 2005 | 1 | Apr 2026 |
| Asche #10942-505-35379 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,500 | Oct 25, 2005 | 1 | Apr 2026 |
| A. Garza #1842-505-35384 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,300 | Oct 7, 2005 | 1 | Apr 2026 |
| Asche #10742-505-35303 | Hilcorp Energy Company only | ZapataCharco (9400) | Temporarily abandonedGas | 10,300 | Jul 11, 2005 | 1 | Apr 2026 |
| Las Ovejas-State #142-505-35212 | Hilcorp Energy Company only | ZapataJennings Ranch (Lobo Cons.) | ActiveGas | 12,160 | Jun 14, 2005 | 3 | Apr 2026 |
| Asche #10542-505-35280 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 13,032 | Jun 8, 2005 | 1 | Mar 2026 |
| Alfonso #3542-505-35270 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,320 | Jun 2, 2005 | 1 | Apr 2026 |
| Las Ovejas-State #242-505-35288 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,300 | May 25, 2005 | 2 | Apr 2026 |
| O. M. Laurel Estate #642-505-35291 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,200 | May 25, 2005 | 2 | Mar 2026 |
| Laurel O. M. Estate #442-505-35247 | Hilcorp Energy Company only | ZapataJennings Ranch (Lobo Cons.) | ActiveGas | 11,830 | Mar 31, 2005 | 1 | Apr 2026 |
| Asche #9742-505-35226 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,100 | Feb 23, 2005 | 1 | Apr 2026 |
| Alfonso #3342-505-35197 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,320 | Feb 17, 2005 | 1 | Apr 2026 |
| Alfonso #3242-505-35196 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,320 | Feb 16, 2005 | 1 | Apr 2026 |
| Laurel O. M. Estate #342-505-35191 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,000 | Jan 19, 2005 | 3 | Apr 2026 |
| Leonardo #4142-505-35175 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,800 | Dec 22, 2004 | 1 | Apr 2026 |
| Laurel O. M. Estate #242-505-35150 | Hilcorp Energy Company only | ZapataJennings Ranch (Lobo Cons.) | ActiveGas | 11,930 | Nov 29, 2004 | 2 | Sep 2018 |
| Leonardo #3942-505-35072 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 12,816 | Aug 10, 2004 | 1 | Apr 2026 |
| Alfonso #2642-505-35038 | Hilcorp Energy Company only | ZapataCharco (9200) | ActiveGas | 10,320 | Jun 28, 2004 | 1 | Apr 2026 |
| Laurel O M Estate #142-505-35027 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,810 | Jun 17, 2004 | 1 | Apr 2026 |
| Ramirez D. #342-505-34962 | Hilcorp Energy Company only | ZapataRamirez (Lobo) | ActiveGas | 13,400 | Apr 16, 2004 | 1 | Apr 2026 |
| Asche #7842-505-34839 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,847 | Oct 22, 2003 | 1 | Apr 2026 |
| Garza A. #1642-505-34611 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,200 | Sep 19, 2002 | 2 | Aug 2009 |
| Leonardo #3142-505-34468 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 9,648 | Dec 13, 2001 | 1 | Apr 2026 |
| Alfonso #2142-505-34372 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,320 | Jul 16, 2001 | 1 | Apr 2026 |
| Asche #6142-505-34368 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,200 | Jun 14, 2001 | 1 | Apr 2026 |
| Alfonso #1942-505-34337 | Hilcorp Energy Company only | ZapataCharco (9900) | ActiveGas | 10,320 | Apr 26, 2001 | 1 | Apr 2026 |
| Alfonso #1742-505-34293 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,320 | Feb 9, 2001 | 1 | Apr 2026 |
| Leonardo #2842-505-34267 | Hilcorp Energy Company only | ZapataCharco (9400) | Temporarily abandonedGas | 10,100 | Dec 22, 2000 | 1 | Apr 2011 |
| Asche #4842-505-34169 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 12,884 | Jul 6, 2000 | 1 | Apr 2026 |
| Alfonso #1542-505-34105 | Hilcorp Energy Company only | ZapataCharco (9400) | ActiveGas | 10,320 | Mar 27, 2000 | 1 | Apr 2026 |