| McKendrick, W.H. G-4-152807 | Columbus Energy, LLC only | Hereford (Lobo) | Webb | 1 | 40.5K | 4.72M | Oct 1994 – Oct 2004 |
| McKendrick, W. H. G-4-165417 | Columbus Energy, LLC only | Laredo (8080) | Webb | 1 | 20.5K | 4.39M | Nov 1997 – Apr 2026 |
| McKendrick-Akin G-4-179590 | Columbus Energy, LLC only | Volz (Lobo) | Webb | 1 | 20.4K | 3.73M | Aug 2000 – Apr 2026 |
| McKendrick, W.H. G-4-151205 | Columbus Energy, LLC only | Hereford (Lobo) | Webb | 1 | 19.7K | 2.58M | Sep 1994 – Jul 2006 |
| McKendrick, W.H. G-4-153479 | Columbus Energy, LLC only | Hereford (Lobo) | Webb | 1 | 18K | 2.31M | Feb 1995 – Mar 2003 |
| McKendrick, W. H. et Al G-4-152460 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 16.2K | 3.11M | Dec 1994 – Dec 2024 |
| McKendrick, W. H. "A" G-4-227843 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 11K | 1.63M | Dec 2006 – Dec 2024 |
| McKendrick G-4-150159 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 9.39K | 1.96M | Jun 1994 – Jan 2023 |
| McKendrick, W. H. G-4-163711 | Columbus Energy, LLC only | Volz (Lobo) | Webb | 1 | 9.12K | 2.35M | Jun 1997 – Apr 2026 |
| McKendrick, W.H. G-4-130007 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 8.85K | 4.09M | Jan 1993 – Apr 2026 |
| McKendrick "B" G-4-226184 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 6.44K | 1.25M | Mar 2007 – Jun 2023 |
| McKendrick, W. H. et Al G-4-149614 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 6.11K | 3.48M | May 1994 – Dec 2024 |
| McKendrick G-4-135454 | White Oak Operating Company LLC only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 5.67K | 625K | Jan 1993 – Mar 2005 |
| McKendrick, W. H. et Al G-4-149186 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 5.07K | 2.29M | Apr 1994 – Feb 2025 |
| McKendrick G-4-193122 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 4.86K | 1.2M | Jan 2003 – Mar 2021 |
| McKendrick G-4-74076 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 4.1K | 1.27M | Jan 1993 – Jul 2008 |
| McKendrick, W. H. G-4-204583 | Columbus Energy, LLC only | Hereford (Lobo) | Webb | 1 | 3.77K | 1.48M | Aug 2004 – Apr 2026 |
| McKendrick, W.H. G-4-146980 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 3.65K | 401K | Sep 1993 – May 1996 |
| McKendrick "C" G-4-226607 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 3.57K | 612K | Apr 2007 – Jan 2023 |
| Akin-McKendrick G-4-74961 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 3.46K | 617K | Jan 1993 – Mar 2013 |
| McKendrick, W. H. et Al G-4-149682 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 3.29K | 341K | May 1994 – Nov 2008 |
| McKendrick, W. H. et Al G-4-159307 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 2.96K | 675K | Jun 1996 – Dec 2024 |
| McKendrick, W. H. G-4-203562 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 2.74K | 868K | Apr 2004 – Jul 2016 |
| McKendrick G-4-151025 | Bluestone Natural Res. II, LLC only | Cerrito Creek (Lobo) | Webb | 1 | 2.48K | 1.44M | Aug 1994 – Aug 2006 |
| McKendrick, W. H. et Al G-4-151326 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 1.96K | 354K | Jul 1994 – Dec 2022 |
| McKendrick G-4-168551 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 1.76K | 1.18M | May 1998 – Jan 2023 |
| McKendrick, W.H. G-4-131667 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 1.68K | 1.24M | Jan 1993 – Apr 2026 |
| McKendrick, W.H. G-4-113018 | Columbus Energy, LLC only | McKendrick (Lobo 7100) | Webb | 1 | 1.43K | 716K | Jan 1993 – Apr 2026 |
| McKendrick-Akin Unit G-4-166960 | Columbus Energy, LLC only | Acevedo (Lobo 6) | Webb | 1 | 1.35K | 578K | Mar 1997 – Oct 2014 |
| McKendrick G-4-210581 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 1.32K | 377K | May 2005 – Jan 2023 |
| McKendrick, Cookie G-4-197060 | Columbus Energy, LLC only | Vato (Lobo) | Webb | 1 | 1.3K | 430K | Aug 2003 – Apr 2012 |
| McKendrick, W. H. G-4-202907 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 1.27K | 180K | Feb 2004 – Feb 2017 |
| McKendrick G-4-171707 | White Oak Operating Company LLC only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 912 | 194K | Dec 1998 – Mar 2004 |
| McKendrick G-4-82819 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 869 | 242K | Jan 1993 – Jun 2010 |
| McKendrick, W. H. G-4-63381 | Columbus Energy, LLC only | Laredo (Lobo) | Webb | 1 | 816 | 1.66M | Mar 1994 – Apr 2026 |
| McKendrick, W.H. G-4-60133 | Conoco Inc. only | Laredo (Lobo) | Webb | 1 | 684 | 234K | Oct 1993 – Oct 1997 |
| McKendrick, W. H. G-4-154235 | Columbus Energy, LLC only | Hereford (Lobo) | Webb | 1 | 586 | 61.4K | Apr 1995 – Sep 1995 |
| McKendrick G-4-210585 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 476 | 464K | Apr 2005 – Dec 2023 |
| McKendrick G-4-133763 | Michael Petroleum Corporation only | Dolores Creek, South (Wx. 9200) | Webb | 1 | 449 | 101K | Jan 1993 – Apr 1996 |
| McKendrick G-4-193635 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 438 | 363K | Feb 2003 – Dec 2023 |
| McKendrick, W. H. G-4-157835 | Kerr-McGee Oil & Gas Onshore LP only | Cerrito Creek (Lobo) | Webb | 1 | 383 | 73.4K | Mar 1996 – Jun 1996 |
| McKendrick G-4-151200 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 383 | 523K | Aug 1994 – Dec 2014 |
| McKendrick G-4-194081 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 347 | 49.4K | Dec 2002 – Jan 2023 |
| McKendrick G-4-126937 | Auten Operating Company, Inc. only | Vato (Lobo) | Webb | 1 | 338 | 136K | Jan 1993 – Aug 1995 |
| McKendrick, W. H. G-4-173495 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 329 | 98K | Jan 1999 – Feb 2002 |
| McKendrick "A" G-4-225682 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 307 | 557K | Jan 2007 – Jan 2023 |
| McKendrick G-4-222218 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 288 | 125K | Aug 2006 – Sep 2021 |
| McKendrick G-4-149616 | Kerr-McGee Oil & Gas Onshore LP only | Moritas Creek (9700) | Webb | 1 | 286 | 91.7K | May 1994 – Aug 2007 |
| McKendrick "A" G-4-146483 | Michael Petroleum Corporation only | Moritas Creek (9700) | Webb | 1 | 263 | 225K | Sep 1993 – May 1999 |
| McKendrick G-4-240359 | Varas Energy Operating Company, only | Cerrito Creek (Lobo Cons.) | Webb | 1 | 216 | 66.3K | Jun 2008 – Dec 2022 |