| Guerra Gas Unit "A" G-4-136730 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 5.97M | Jan 1993 – May 2021 |
| Guerra Gas Unit "A" G-4-141853 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 14.8M | Jan 1993 – Jul 2026 |
| Guerra Gas Unit "A" G-4-142047 | Milagro Exploration, LLC only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 2.46M | Jan 1993 – Nov 2008 |
| Guerra Gas Unit "A" G-4-143938 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 8.08M | Jan 1993 – May 2021 |
| Yzaguirre, J. G-4-145122 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 2.44M | Apr 1993 – Jul 2026 |
| USA 2 G-4-145957 | Sanchez-O'Brien Oil & Gas Corp. only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 422K | Jun 1993 – Sep 1994 |
| Yzaguirre, J. G-4-146219 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 4.01M | Jul 1993 – Jul 2026 |
| Guerra Gas Unit "A" G-4-146317 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 9.85M | Jul 1993 – Jul 2026 |
| USA G-4-146320 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 23.2M | Jun 1993 – Jul 2026 |
| Guerra Gas Unit"a" G-4-146903 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 393K | Sep 1993 – Jul 2026 |
| USA G-4-146926 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 22M | Sep 1993 – Jul 2026 |
| Guerra Gas Unit "A" G-4-147062 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 8.13M | Sep 1993 – Jul 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-147598 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 782K | Nov 1993 – Jul 2026 |
| Yzaguirre, J. G-4-147606 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 1.25M | Oct 1993 – Jul 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-147761 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 5.82M | Sep 1993 – Jul 2026 |
| Yzaguirre, J. G-4-148128 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 2.36M | Nov 1993 – Jul 2026 |
| USA G-4-148252 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 29.6M | Feb 1994 – Jul 2026 |
| Ramirez-USA GU "E" G-4-148278 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 13.3M | Dec 1993 – Jul 2026 |
| USA G-4-148493 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 22.9M | Jan 1994 – Nov 2019 |
| USA 1 G-4-149031 | Coastal Oil & Gas Corporation only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 15.9M | Mar 1994 – Apr 2001 |
| Ramirez-Yzaguirre Gas Unit G-4-149151 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 1.11M | Mar 1994 – Jul 2026 |
| Yzaguirre, J. G-4-150169 | Milagro Exploration, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 1.52M | Jun 1994 – Nov 2012 |
| USA 2 G-4-150387 | Sanchez-O'Brien Oil & Gas Corp. only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 345K | Jun 1994 – Aug 1994 |
| Ramirez-USA GU "E" G-4-150895 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 17.4M | May 1994 – Jul 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-151149 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 1.79M | May 1994 – Jul 2026 |
| Yzaguirre, J. G-4-151267 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 153K | Jul 1994 – Jul 2026 |
| Guerra G-4-151322 | Transtexas Gas Corporation only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 22.4K | May 1994 – Sep 1999 |
| Guerra-U.S.A. Gas Unit "D' G-4-151325 | El Paso Production Oil & Gas Co. only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 428K | Jul 1994 – Jul 2006 |
| Ramirez-USA GU "E" G-4-151327 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 7.45M | Jul 1994 – Jul 2026 |
| Yzaguirre, J. G-4-151471 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 262K | Sep 1994 – Jul 2026 |
| USA G-4-151749 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 31.5M | Sep 1994 – Jul 2026 |
| Guerra-U.S.A. Gas Unit "C" G-4-152728 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 3.28M | Aug 1994 – Jul 2026 |
| Ramirez-USA GU "E" G-4-153276 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 5.14M | Oct 1994 – Jul 2026 |
| State Park G-4-155287 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | May 1995 – Jul 2026 |
| USA G-4-156048 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 12.1M | Jul 1995 – Jul 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-156458 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | Aug 1995 – Jul 2026 |
| Guerra Gas Unit "A" G-4-156522 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | Aug 1995 – Jul 2026 |
| Yzaguirre, D. Heirs G-4-156675 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 1.23M | Mar 1995 – Jul 2026 |
| USA G-4-156879 | Cantera Operating, LLC only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 10.6M | Nov 1995 – Apr 2015 |
| Ramirez/Yzaguirre G-4-156996 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 23.2K | Aug 1995 – Jul 2026 |
| Ramirez-Yzaguirre Gas Unit G-4-157180 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 352K | Nov 1995 – Jul 2026 |
| USA G-4-157188 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 26.2M | Dec 1995 – Jul 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-157367 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | Oct 1995 – Jul 2026 |
| Guerra Gas Unit "A" G-4-158363 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | Jan 1996 – Jul 2026 |
| USA G-4-159483 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 4.04M | Apr 1996 – Jul 2026 |
| Guerra-U.S.A. Gas Unit "D" G-4-160888 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | Oct 1996 – Jul 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-160892 | Cantera Operating, LLC only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | May 1996 – Jun 2017 |
| Guerra-U.S.A. Gas Unit "D" G-4-160919 | Cantera Operating, LLC only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 0 | Jul 1996 – Nov 2014 |
| Ramirez-USA GU "E" G-4-161075 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 2M | Jul 1996 – Jul 2026 |
| Yzaguirre, D. Heirs G-4-161327 | El Paso E & P Company, L. P. only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 50.7K | Apr 1996 – Sep 2007 |