| Slick, T.B. Estate A-229 O-4-12809 | Hilcorp Energy Company | Rincon (Vicksburg 89A) | 2 | 2.02M | 2.29M | Jan 1998 – Jul 2026 |
| Slick, T. B. A-527 O-4-12908 | Hilcorp Energy Company | Rincon (80 Vicksburg) | 3 | 650K | 1.03M | Oct 1999 – Jul 2026 |
| Slick, T. B. A-229 O-4-12873 | Hilcorp Energy Company | Rincon (Vicksburg 89A) | 2 | 640K | 957K | Nov 1999 – Jul 2026 |
| Garcia, M. M. -B- O-4-2375 | Hilcorp Energy Company | Rincon (Vicksburg Sand) | 4 | 410K | 581K | Jan 1993 – Jul 2026 |
| I.V. Montalvo 'C' O-4-14050 | Killam Oil Co., Ltd. | Sun, North (Vicksburg 5980) | 7 | 378K | 692K | Jun 2017 – Jul 2026 |
| Villarreal O-4-1296 | Wagner Oil Company | Jay Simmons | 27 | 359K | 1.61M | Jan 1993 – Jul 2026 |
| Margo O-4-13094 | Starr Operating, LLC | Arroyo Grande (Queen City) | 7 | 349K | 699K | Aug 2002 – Jul 2026 |
| Martinez -B- O-4-13191 | Hilcorp Energy Company | Rincon, North (5200) | 1 | 318K | 804K | Nov 2003 – Jul 2026 |
| Slick, T. B. Estate -B- O-4-2377 | Hilcorp Energy Company | Rincon (Vicksburg Sand) | 7 | 274K | 668K | Jan 1993 – Jul 2026 |
| Slick, T. B. Estate -H- O-4-2380 | Hilcorp Energy Company | Rincon (Vicksburg Sand) | 3 | 271K | 1.28M | Jan 1993 – Jul 2026 |
| Slick, T.B. Est. A-265 O-4-13842 | Hilcorp Energy Company | Rincon (Vicksburg Cons.) | 5 | 254K | 247K | May 2013 – Jul 2026 |
| Gutierrez No. 1 O-4-13246 | Mortimer Production Company | Pedernal (Queen City) | 3 | 244K | 281K | Jul 2004 – Jul 2026 |
| LA Brisa Ranch Partners 91 O-4-315 | Trap Rock Oil, Ltd. | Boyle | 12 | 230K | 1.03M | Jan 1993 – Jul 2026 |
| Saenz, M - State O-4-11999 | Killam Oil Co., Ltd. | Rincon, N. (G Sand) | 1 | 223K | 145K | Jan 1993 – Feb 2026 |
| Lago O-4-13722 | Mortimer Production Company | Pedernal (Queen City) | 2 | 199K | 671K | Apr 2011 – Jul 2026 |
| LA Liebre O-4-13349 | Mortimer Production Company | Pedernal (Queen City) | 1 | 198K | 195K | Dec 2005 – Jul 2026 |
| Texaco Fee- Guerra "A" O-4-12810 | Southern Tejas Asset Group LLC | Roma | 1 | 194K | 332K | Sep 1998 – Jul 2026 |
| McKinney, Amanda O-4-13276 | Killam Oil Co., Ltd. | Sun (G-1) | 1 | 188K | 230K | Nov 2004 – Apr 2022 |
| Geo. H. Speer O-4-13794 | Killam Oil Co., Ltd. | Sun (G-1) | 4 | 186K | 201K | Oct 2013 – Jul 2026 |
| LA Brisa O-4-12886 | Texas Independent Explor Ltd. | Rincon (Vicksburg Upper 5480) | 1 | 180K | 1.24M | Feb 2000 – Apr 2024 |
| Guerra, R.A. O-4-12832 | Merit Energy Company | LA Reforma (Frio 6200) | 2 | 179K | 164K | Jan 1999 – Jul 2026 |
| Semmes Trust, et al "906" O-4-13057 | Conocophillips Company | Rincon (Vicksburg 95 906-5) | 1 | 172K | 244K | Jun 2001 – Jul 2003 |
| Guerra O-4-13583 | Trap Rock Oil, Ltd. | Rincon (Vicksburg Cons.) | 4 | 168K | 202K | Dec 2009 – Jul 2026 |
| Hensley-Yturria O-4-13292 | Orx Resources, L.L.C. | Yturria, NE. (5000 Sand) | 1 | 157K | 81.1K | Feb 2005 – Jul 2026 |
| Ignacia Gutierrez O-4-13732 | Mortimer Production Company | Pedernal (Queen City) | 2 | 152K | 155K | Oct 2011 – Jul 2026 |
| Slick, T. B. Estate O-4-14168 | Merit Energy Company | Hinde (Vksbg. No. 1, Lo. FB A) | 2 | 141K | 85.4K | Jan 2022 – Jul 2026 |
| DE Garcia, B. G. O-4-5652 | Kerr-McGee Oil & Gas Onshore LP | Garcia (Miller -A-) | 3 | 141K | 34.5K | Jan 1993 – Dec 2011 |
| Gonzales O-4-13277 | Starr Operating, LLC | Arroyo Grande (Queen City) | 3 | 140K | 646K | Nov 2004 – Jul 2026 |
| LA Brisa Ranch/State 542 O-4-13037 | Trap Rock Oil, Ltd. | Rincon (Vicksburg L-1) | 1 | 135K | 84.3K | Jul 2001 – Jul 2026 |
| Slick T.B. -a- 229 O-4-13212 | Hilcorp Energy Company | Rincon (Vicksburg Cons.) | 3 | 131K | 584K | Apr 2004 – Jul 2026 |
| LA Brisa O-4-12686 | Texas Independent Explor., Inc. | Rincon (Vicksburg 5480) | 1 | 128K | 168K | Jun 1997 – May 2000 |
| Plains Capital O-4-14162 | Mortimer Production Company | Pedernal (Queen City) | 2 | 120K | 51.5K | Nov 2021 – Jul 2026 |
| Slick, T. B. Estate "B" 536 O-4-13713 | Hilcorp Energy Company | Rincon (Vicksburg Cons.) | 1 | 118K | 601K | Aug 2011 – Jul 2026 |
| McLean, Marrs O-4-9832 | White Stride LLC | Lockhart (Cockfield #2) | 3 | 111K | 554K | Jan 1993 – Jul 2026 |
| Montalvo, I.V. -C- O-4-11649 | Kerr-McGee Oil & Gas Onshore LLC | Sun, North (5810) | 1 | 110K | 103K | Jan 1993 – Sep 2005 |
| Semmes Trust, et al "906" O-4-13136 | Hilcorp Energy Company | Rincon (Vicksburg 80) | 2 | 109K | 125K | Nov 2002 – Jul 2026 |
| T. B. Slick Estate 'a' 265 O-4-13843 | Hilcorp Energy Company | Rincon (B-2 Frio) | 1 | 107K | 173K | Aug 2013 – Jul 2026 |
| Acevedo, H. Oil Unit O-4-11704 | Suemaur Exploration, Inc. | Suemaur (Frio 4400) | 2 | 103K | 20K | Jan 1993 – Mar 2008 |
| Murch, B. L. O-4-8584 | Faulconer Energy, LLC | Bloomberg, West (5500) | 4 | 101K | 253K | Jan 1993 – Jul 2026 |
| McGill Bros. O-4-12930 | Overton Park Oil & Gas LP | Kelsey (Frio Consol.) | 46 | 100K | 564K | Jan 2000 – Jul 2026 |
| Garza Heirs O-4-13297 | Mortimer Production Company | Pedernal (Queen City) | 1 | 99.7K | 111K | Mar 2005 – Jul 2026 |
| Slick, T.B. Estate "B-222" O-4-13402 | Hilcorp Energy Company | Rincon (Vicksburg Cons.) | 2 | 89.3K | 95.6K | Jun 2006 – Jul 2026 |
| Slick, T. B., Est. -B- O-4-6933 | Hilcorp Energy Company | Rincon (Vicksburg I-E) | 3 | 89.3K | 160K | Jan 1993 – Jul 2026 |
| Sue Fuller O-4-13911 | Mortimer Production Company | Pedernal (Queen City) | 1 | 88.1K | 43.1K | Mar 2014 – Nov 2021 |
| M. E. Evans et al Unit O-4-12889 | BNP Petroleum Corporation | Judd City, S. (6100 Sd.) | 2 | 78.7K | 69.4K | Sep 1999 – Jul 2026 |
| Gutierrez No. 3 O-4-14165 | Mortimer Production Company | Pedernal (Queen City) | 2 | 77.8K | 16.4K | Jan 2022 – Jul 2026 |
| Garza, Juan M. O-4-6197 | CM TX Production, LLC | Rincon, North (D- 3) | 2 | 76.9K | 54.6K | Jan 1993 – May 2010 |
| Semmes Trust , et al 906 O-4-13168 | Kerr-McGee Oil & Gas Onshore LLC | Rincon (Vicksburg 87\89) | 1 | 76.2K | 67.5K | May 2003 – Apr 2004 |
| Texaco Fee-Guerra "C" #1 O-4-12681 | Legend Natural Gas III, LP | Roma | 3 | 74.3K | 28K | Jun 1997 – Oct 2013 |
| I. V. Montalvo 'C' O-4-14026 | Killam Oil Co., Ltd. | Sun, North (5810) | 2 | 69.3K | 253K | Feb 2017 – Jul 2026 |