| Stewart O-1-15635 | Pearsall (Austin Chalk) | Frio | 4 | 439K | 161K | Jul 2010 – Jul 2026 |
| Stewart - Michael Unit O-1-16563 | Pearsall (Austin Chalk) | Frio | 1 | 95K | 42.1K | Nov 2011 – Jul 2026 |
| Neal Unit O-1-17431 | Pearsall (Austin Chalk) | Frio | 1 | 84.2K | 3.45K | Aug 2012 – Jul 2026 |
| Stewart - Michael 2H Unit O-1-16397 | Pearsall (Austin Chalk) | Frio | 1 | 48.1K | 12K | Jan 2012 – Jul 2026 |
| Lewis O-2-9678 | Monson, SW. (6150) | Karnes | 2 | 28.2K | 61K | Jun 2011 – Jul 2026 |
| Monson O-2-9024 | Monson, SW. (6150) | Karnes | 2 | 8.02K | 13.7K | Jan 2006 – Jul 2026 |
| Gauntt, Ruby O-2-4635 | Monson (Luling 6270) | Karnes | 3 | 7.37K | 5.33K | Jan 1993 – Jul 2026 |
| Mudd O-2-4217 | Monson, SW. (6270 Luling) | Karnes | 1 | 6.81K | 4.74K | Jan 1993 – Jul 2026 |
| Russell-Winch G-4-111905 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 1.87M | Jan 1993 – Jul 2026 |
| Russell-Winch G-4-120415 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 757K | Jan 1993 – Jul 2026 |
| Russell - Winch State G-4-128572 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 1.62M | Jan 1993 – Jul 2026 |
| Hein, A.O. G-4-131965 | LA Perla (Wilcox, First) | Zapata | 1 | 0 | 568K | Jan 1993 – Jul 2026 |
| Russell - Winch G-4-132796 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 2.71M | Jan 1993 – Jul 2026 |
| Bruni Mineral Trust A-B G-4-134065 | LA Perla (Wilcox, Lower) | Zapata | 1 | 0 | 2.41M | Jan 1993 – Jul 2026 |
| Bruni Mineral Trust AB G-4-139464 | LA Perla (Wilcox, Lower) | Zapata | 1 | 0 | 1.5M | Jan 1993 – Jul 2026 |
| Martin, Sophie J. "B" G-4-140492 | Dolores Creek (Wilcox 8200) | Webb | 1 | 0 | 607K | Jan 1993 – Jul 2026 |
| Bruni Mineral Trust AB G-4-141749 | LA Perla (Wilcox, Lower) | Zapata | 1 | 0 | 237K | Jan 1993 – Jul 2026 |
| Hein, Luz A. Estate G-4-142846 | LA Perla (Wilcox, Lower) | Webb | 1 | 0 | 4.3M | Jan 1993 – Jul 2026 |
| Russell-Winch G-4-143294 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 1.89M | Jan 1993 – Jul 2026 |
| Rottersman G-4-143721 | Rottersman (8500) | Webb | 1 | 0 | 740K | Jan 1993 – Jul 2026 |
| Russell-Winch G-4-143764 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 2.9M | Jan 1993 – Jul 2026 |
| Bruni Mineral Trust AB G-4-146526 | LA Perla (Wilcox, Lower) | Zapata | 1 | 0 | 2.21M | Aug 1993 – Jul 2026 |
| Welhausen, J.R. G-4-146609 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 431K | Sep 1993 – Jul 2026 |
| Russell-Winch G-4-148168 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 989K | Jan 1994 – Jul 2026 |
| Russell-Winch G-4-151909 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 5.02M | Nov 1994 – Jul 2026 |
| McCann, Catalina L. G-4-156673 | LA Perla (Wilcox, Eleventh) | Zapata | 1 | 0 | 0 | Oct 1995 – Jul 2026 |
| Pena, H. L. G-4-159403 | LA Perla (Lobo Cons.) | Webb | 1 | 0 | 1.32M | Jul 1996 – Jul 2026 |
| Pena, H. L. G-4-160639 | LA Perla (Lobo Cons.) | Webb | 1 | 0 | 963K | Oct 1996 – Jul 2026 |
| Pena, H. L. G-4-160849 | LA Perla (Lobo Cons.) | Webb | 1 | 0 | 0 | Nov 1996 – Jul 2026 |
| Hein-Bruni GU G-4-163868 | Wildcat | Zapata | 1 | 0 | 0 | Feb 1997 – Jul 2026 |
| Mayers G-4-166273 | Rottersman (Lobo) | Webb | 1 | 0 | 344K | Nov 1997 – Jul 2026 |
| Russell-Winch G-4-166302 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 2.38M | Jan 1998 – Jul 2026 |
| Welhausen, J. R. G-4-167838 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 1.65M | Apr 1998 – Jul 2026 |
| Russell-Winch G-4-169843 | Wildcat | Webb | 1 | 0 | 1.45M | Sep 1998 – Jul 2026 |
| Mayers G-4-170760 | Fausto (Lobo) | Webb | 1 | 0 | 157K | Aug 1998 – Jul 2026 |
| Hein, Luz A. Estate G-4-171852 | LA Perla (Wilcox, Lower) | Webb | 1 | 0 | 201K | Jan 1999 – Jul 2026 |
| Hein, Luz A. Estate G-4-172744 | LA Perla (Wilcox, Lower) | Webb | 1 | 0 | 10K | Mar 1999 – Jul 2026 |
| Bruni Mineral Trust G-4-178876 | LA Perla (Lobo Cons.) | Zapata | 1 | 0 | 3.15M | Aug 2000 – Jul 2026 |
| Gill, F. J. G-4-182637 | Rottersman (Lobo) | Webb | 1 | 0 | 693K | Feb 2001 – Jul 2026 |
| M.M.A. Cattle Co. G-4-183997 | Barrera (Lobo) | Webb | 1 | 0 | 819K | Jun 2001 – Jul 2026 |
| Mayers G-4-186073 | Rottersman (Lobo) | Webb | 1 | 0 | 818K | Oct 2001 – Jul 2026 |
| Gill, F. J. G-4-186644 | Rottersman (8500) | Webb | 1 | 0 | 222K | Nov 2001 – Jul 2026 |
| Mayers G-4-186736 | Rottersman (Lobo) | Webb | 1 | 0 | 322K | Dec 2001 – Jul 2026 |
| Mayers G-4-188875 | Rottersman (Lobo) | Webb | 1 | 0 | 564K | Apr 2002 – Jul 2026 |
| Hein, A. O. G-4-189389 | LA Perla (Lobo Cons.) | Zapata | 1 | 0 | 869K | Feb 2002 – Jul 2026 |
| Gill, F. J. G-4-190597 | Rottersman (Lobo) | Webb | 1 | 0 | 920K | Jun 2002 – Jul 2026 |
| Gill, F. J. G-4-191685 | Rottersman (Lobo) | Webb | 1 | 0 | 984K | Sep 2002 – Jul 2026 |
| Bruni-Hein Gas Unit G-4-191848 | LA Perla (Lobo Cons.) | Zapata | 1 | 0 | 953K | Sep 2002 – Jul 2026 |
| Winch, L.-State G-4-192926 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 856K | Nov 2002 – Jul 2026 |
| Russell-Winch G-4-192943 | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 0 | 581K | Feb 2003 – Jul 2026 |