| Russell-Winch G-4-143764 | Arete Operating Company, LLC | Belle Jeffers (7850) | Webb | 1 | 120K | 2.9M | Jan 1993 – Sep 2019 |
| Russell-Winch G-4-151909 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 71.2K | 5.02M | Nov 1994 – Apr 2026 |
| Russell-Winch G-4-166302 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 51.7K | 2.38M | Jan 1998 – Apr 2026 |
| Russell-Winch G-4-143294 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 45.6K | 1.89M | Jan 1993 – Apr 2026 |
| Russell - Winch G-4-196183 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 32.8K | 2.07M | Jun 2003 – Apr 2026 |
| Mayers G-4-188875 | Arete Operating Company, LLC | Rottersman (Lobo) | Webb | 1 | 26.7K | 564K | Apr 2002 – Apr 2026 |
| Russell - Winch G-4-193163 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 23.7K | 1.21M | Jan 2003 – Apr 2026 |
| Russell - Winch G-4-132796 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 20.7K | 2.71M | Jan 1993 – Feb 2026 |
| Russell-Winch G-4-111905 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 15.4K | 1.87M | Jan 1993 – Apr 2026 |
| Russell - Winch State G-4-128572 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 12.8K | 1.62M | Jan 1993 – Mar 2026 |
| Russell-Winch G-4-108652 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 12.8K | 553K | Jan 1993 – Apr 2022 |
| Rottersman G-4-143721 | Arete Operating Company, LLC | Rottersman (8500) | Webb | 1 | 9.82K | 740K | Jan 1993 – Apr 2026 |
| Russell-Winch G-4-169843 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 9.23K | 1.45M | Apr 1999 – Apr 2026 |
| Welhausen, J. R. G-4-167838 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 6.81K | 1.65M | Apr 1998 – Apr 2026 |
| M.M.A. Cattle Co. G-4-183997 | Arete Operating Company, LLC | Barrera (Lobo) | Webb | 1 | 6.8K | 819K | Jun 2001 – Apr 2026 |
| Winch, L.-State G-4-192926 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 6.56K | 856K | Nov 2002 – Dec 2014 |
| Mayers G-4-186736 | Arete Operating Company, LLC | Rottersman (Lobo) | Webb | 1 | 6.56K | 322K | Dec 2001 – Apr 2026 |
| Russell-Winch G-4-120415 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 6.52K | 757K | Jan 1993 – Apr 2025 |
| L. Winch State G-4-100947 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 6.4K | 836K | Jan 1993 – Jan 2015 |
| Martin, Sophie J. "B" G-4-140492 | Arete Operating Company, LLC | Cerrito Creek (Lobo Cons.) | Webb | 1 | 6.28K | 607K | Jan 1993 – Apr 2026 |
| Gill, F. J. G-4-191685 | Arete Operating Company, LLC | Rottersman (Lobo) | Webb | 1 | 5.53K | 984K | Sep 2002 – Apr 2026 |
| Gill, F. J. G-4-182637 | Arete Operating Company, LLC | Rottersman (Lobo) | Webb | 1 | 5.17K | 693K | Feb 2001 – Apr 2026 |
| Mayers G-4-186073 | Arete Operating Company, LLC | Rottersman (Lobo) | Webb | 1 | 4.71K | 818K | Oct 2001 – Apr 2026 |
| Russell - Winch State G-4-98216 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 4.62K | 641K | Jan 1993 – Jan 2026 |
| Welhausen, J.R. G-4-146609 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 4.05K | 431K | Sep 1993 – Apr 2026 |
| Russell-Winch G-4-192943 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 3.84K | 581K | Feb 2003 – Jan 2026 |
| M. M. A. Cattle Co. G-4-201857 | Arete Operating Company, LLC | Fausto (Lobo) | Webb | 1 | 3.36K | 783K | May 2004 – Apr 2026 |
| Gill, F. J. G-4-190597 | Arete Operating Company, LLC | Rottersman (Lobo) | Webb | 1 | 3.19K | 920K | Jun 2002 – Apr 2026 |
| Russell-Winch G-4-148168 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 2.72K | 989K | Jan 1994 – Feb 1999 |
| Mayers Gas Unit 4 G-4-216942 | Arete Operating Company, LLC | Fausto (Lobo) | Webb | 1 | 1.64K | 233K | Nov 2005 – Apr 2026 |
| Pena, H. L. G-4-160639 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Webb | 1 | 1.05K | 963K | Oct 1996 – Apr 2026 |
| Russell-Winch G-4-258372 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 1.01K | 8.16K | Dec 2010 – Sep 2019 |
| Haynes Estate G-4-11580 | Arete Operating Company, LLC | Los Mogotes (Queen City) | Zapata | 1 | 989 | 861K | Jan 1993 – Oct 2022 |
| Gill, F. J. G-4-186644 | Arete Operating Company, LLC | Rottersman (8500) | Webb | 1 | 845 | 222K | Nov 2001 – Apr 2026 |
| Mayers G-4-166273 | Arete Operating Company, LLC | Rottersman (Lobo) | Webb | 1 | 754 | 344K | Nov 1997 – Apr 2026 |
| Lewis G-2-206853 | Arete Operating Company, LLC | Monson (Queen City) | Karnes | 1 | 752 | 66K | May 2004 – Oct 2017 |
| Pena, H. L. G-4-159403 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Webb | 1 | 686 | 1.32M | Jul 1996 – Apr 2026 |
| Hein, Luz A. Estate G-4-171852 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Webb | 1 | 298 | 201K | Jan 1999 – Nov 2013 |
| Russell-Winch G-4-256741 | Arete Operating Company, LLC | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 124 | 16.2K | Jul 2010 – Dec 2013 |
| Mayers G-4-170760 | Arete Operating Company, LLC | Fausto (Lobo) | Webb | 1 | 114 | 157K | Sep 1998 – Apr 2026 |
| Monson G-2-220900 | Arete Operating Company, LLC | Monson (Queen City) | Karnes | 1 | 103 | 25.1K | Jun 2006 – Jun 2016 |
| Hein, A.O. G-4-131965 | Arete Operating Company, LLC | La Perla (Wilcox, First) | Zapata | 1 | 59 | 568K | Jan 1993 – Mar 2026 |
| Bruni Mineral Trust G-4-178876 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Zapata | 1 | 32 | 3.15M | Aug 2000 – Apr 2026 |
| Bruni-Hein Gas Unit G-4-191848 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Zapata | 1 | 18 | 953K | Sep 2002 – Apr 2026 |
| Bruni Mineral Trust A-B G-4-134065 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Zapata | 1 | 2 | 2.41M | Jan 1993 – Feb 2026 |
| Bruni Mineral Trust AB G-4-146526 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Zapata | 1 | 1 | 2.21M | Sep 1993 – Mar 2026 |
| Bruni Mineral Trust AB G-4-139464 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Zapata | 1 | 1 | 1.5M | Jan 1993 – Mar 2021 |
| Hein, A. O. G-4-189389 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Zapata | 1 | 0 | 869K | Mar 2002 – Apr 2026 |
| Hein, Luz A. Estate G-4-172744 | Arete Operating Company, LLC | La Perla (Lobo Cons.) | Webb | 1 | 0 | 10K | Mar 1999 – Mar 2026 |
| Hein-Bruni GU G-4-163868 | Arete Operating Company, LLC | Wildcat | Zapata | 1 | 0 | 0 | — |