| Lee O-2-6486 | Ken Petroleum Corporation | Edna, South (5230) | 1 | 49.1K | 21 | by Jan 1993 – Feb 2001 |
| Rose-Sample G-2-245565 | Atlas Operating LLC | El Toro Max (AY-3) | 1 | 48.8K | 433K | Jan 2009 – Aug 2026 |
| Brooking, G.T. O-2-7475 | Bull Operating, LLC | Swan Lake (6220) | 2 | 48.7K | 61.1K | Sep 2004 – Jan 2019 |
| Bennett, John M. Jr. et Al O-2-6321 | Cibolo Energy Operating, Inc. | Bay Pasture (5600) | 1 | 48.3K | 11.6K | by Jan 1993 – Nov 2003 |
| Hamon Heirs O-2-532 | Proline Energy Resources Inc | Ganado, West | 3 | 48K | 103 | by Jan 1993 – Mar 2025 |
| NW O-2-11436 | Angel Operating LLC | Ganado, West (4700 Zone) | 1 | 47.6K | 52.5K | Sep 2017 – Jun 2023 |
| West Ranch State Oil & Gas UNIT1 O-2-10785 | Hilcorp Energy Company | West Ranch, S. (Frio 7030) | 1 | 47.6K | 28.5K | Jan 2014 – Oct 2018 |
| M. L. & I. Co. O-2-3357 | KD Energy, LLC | Ganado, Deep (Hanna Ross) | 1 | 47.5K | 175K | by Jan 1993 – Oct 2025 |
| Vincik, A. R. O-2-8240 | KCS Medallion Resources, Inc. | Bennview, E. (6950 Frio) | 1 | 47.3K | 56K | Feb 1997 – Jul 1999 |
| West Ranch State Oil & Gas UT 1 O-2-8058 | Vintage Petroleum, Inc. | West Ranch, S. (Frio 7200) | 1 | 47.2K | 67.6K | Oct 1994 – Jun 2001 |
| Jackson-Williams G-2-163085 | Contango Resources, Inc. | Morales, E. (Wilcox) | 1 | 47.2K | 4.78M | Nov 1996 – Jun 2014 |
| Westhoff O-2-7457 | Encon Services, Inc. | Westhoff Ranch (Frio 5970) | 2 | 47.1K | 103K | by Jan 1993 – Apr 2003 |
| Brushel "B" O-2-7823 | 911 Claims Corp | Cordele, SE. (-a- Sand) | 1 | 46.9K | 18 | by Jan 1993 – Jul 2025 |
| Ross Gas Unit (AT4) O-2-11072 | KD Energy, LLC | Ganado (F- 4-C Seg 2) | 1 | 46.7K | 39.3K | Jun 2015 – Aug 2026 |
| Sample G-2-293767 | Decker Operating Co., L.L.C. | Bright Falcon (Yegua 9580) | 1 | 46.6K | 1.61M | Oct 2022 – Jul 2026 |
| Germer-Sample G-2-153712 | Cox & Perkins Exploration, Inc. | Bright Falcon (Yegua 9580) | 1 | 46.3K | 352K | Jan 1995 – Jul 1997 |
| Goff G-2-213895 | Sandel Operating Company | Brushy Creek (Wilcox Cons.) | 1 | 46K | 2.83M | Nov 2005 – Aug 2026 |
| Stafford-Menefee G-2-198957 | Cox & Perkins Exploration, Inc. | Lost Bridge (Yegua 9400) | 1 | 45.8K | 767K | Sep 2003 – Jun 2011 |
| Mauritz B O-2-8499 | KD Energy, LLC | Ganado (F-16) | 1 | 45.2K | 79.3K | Jan 2000 – May 2013 |
| Mauritz, T. N. O-2-3421 | Angel Operating LLC | Ganado, West (4700 Zone) | 2 | 44.8K | 54.2K | by Jan 1993 – Dec 2013 |
| Toney, M. H. Mrs. O-2-9209 | Hilcorp Energy Company | West Ranch (Vanderbilt Sand) | 1 | 44.5K | 92.5K | May 2008 – Dec 2015 |
| Goff G-2-216113 | Sandel Operating Company | Brushy Creek (Wilcox Cons.) | 1 | 44.2K | 3.1M | Oct 2005 – Aug 2026 |
| Mauritz, H. & Trust O-2-6583 | Fredco | Mauritz (5650 Sand) | 3 | 44K | 21 | by Jan 1993 – Aug 2026 |
| -L- Ranch O-2-6484 | Miner, R. C. Oil, Inc. | Lolita (Ward Zone) | 1 | 43.3K | 88 | by Jan 1993 – Aug 2026 |
| Wolff et Al O-2-10285 | 2S Resources LLC | El Toro (6920) | 1 | 43K | 62K | Apr 2012 – Aug 2019 |
| Webernick Unit G-2-212024 | Tri-C Resources, LLC | Brushy Creek (Wilcox Cons.) | 1 | 42.7K | 2.89M | Aug 2005 – Jun 2014 |
| Mauritz, Fred Trust Est. O-2-6900 | Fredco | Mauritz (6100) | 1 | 42.6K | 88 | by Jan 1993 – Feb 2008 |
| Lovett Est. O-2-4337 | Black Draw Energy LLC | Francitas (-a- Sand) | 1 | 42.5K | 265 | by Jan 1993 – Dec 2025 |
| Cravens, E. T. O-2-3413 | Angel Operating LLC | Ganado, West (4700 Zone) | 10 | 42.5K | 79.7K | by Jan 1993 – Sep 2012 |
| Graves, T.A. O-2-9251 | Viper S.W.D., LLC | Westhoff (Combined Associated) | 2 | 42.2K | 118K | Jul 2008 – Jul 2026 |
| Strauss, Mike O-2-8431 | Sue-Ann Operating, L.C. | Maurbro (5620 Sand) | 1 | 40.8K | 129K | Oct 1998 – Oct 2001 |
| Vanderbilt State "B" O-2-7383 | Hilcorp Energy Company | West Ranch (6850) | 1 | 40.8K | 50.5K | by Jan 1993 – Jan 2001 |
| Simons, M. K. O-2-3924 | Muroz International Group Inc | Texana (6400, E) | 1 | 40.5K | 170 | by Jan 1993 – Aug 2026 |
| Mauritz, H. & Trust O-2-6584 | Fredco | Mauritz (5700) | 1 | 40.4K | 15 | by Jan 1993 – Aug 2026 |
| Brock, M. H. et Al O-2-4462 | White Stride LLC | Indian Creek (M-1) | 2 | 40.2K | 30 | May 1995 – Aug 2026 |
| Mavritz, H. O-2-7450 | Fredco | Harmon, S. (6230) | 1 | 39.8K | 0 | Mar 2018 – Aug 2026 |
| Webernick Unit G-2-219508 | Tri-C Resources, LLC | Brushy Creek (Wilcox Cons.) | 1 | 39.6K | 2.49M | Jan 2006 – May 2009 |
| Moore-Stafford G-2-254487 | Atlas Operating LLC | Morales, North (Wilcox) | 1 | 39.1K | 1.15M | Nov 2006 – Aug 2026 |
| Combs-Patman Unit O-2-10805 | Rincon Petroleum Corporation | Little Kentucky (Frio 5650) | 1 | 39K | 38.4K | Jul 2012 – Jul 2026 |
| Oliver G-2-233755 | Zachry Exploration, LLC | El Torito (Yegua 9000) | 1 | 38.9K | 759K | Jan 2008 – Mar 2011 |
| Four Way Ranch O-2-9298 | McGowan Working Partners, Inc. | Lolita, Deep (4-Way Zone) | 1 | 38.8K | 164K | Feb 2009 – Jan 2026 |
| Zetka-Cravens O-2-11635 | Angel Operating LLC | Ganado, West (4700 Zone) | 1 | 38.6K | 27.8K | May 2018 – Jan 2021 |
| Peggy Unit G-2-155250 | Ken Petroleum Corporation | Lonken (7030) | 1 | 38.5K | 1.93M | Jul 1995 – Jan 2004 |
| McInnis O-2-9035 | New Source Oil & Gas, LLC | Ganado,deep (Hultquist) | 1 | 38.4K | 120 | Mar 2006 – Jul 2026 |
| Rose and Sample G-2-149114 | Bse Production Co. | Jack Starr (Yegua Y-4) | 1 | 38.2K | 5.27M | Apr 1994 – Jan 2009 |
| L Ranch D Unit O-2-9485 | Wagner Oil Company | South la Ward (Clements B Sand) | 1 | 38K | 60.9K | Feb 2010 – Apr 2015 |
| Weaver-Dugger Unit G-2-180197 | Allegro Investments, Inc. | Maude B. Traylor, N. (44 Seg A) | 1 | 37.8K | 1.71M | Sep 2000 – Feb 2007 |
| Mitchell Estate O-2-10390 | McGowan Working Partners, Inc. | Lolita (Ward Zone) | 1 | 37.6K | 56.5K | Jul 2012 – Aug 2026 |
| Shefcik et al Gas Unit G-2-220084 | Sandel Operating Company | Brushy Creek (Wilcox Cons.) | 1 | 37.6K | 2.66M | Mar 2006 – Aug 2026 |
| Toney, M. H. O-2-8116 | Hilcorp Energy Company | West Ranch (6710 Frio) | 1 | 37.5K | 53.1K | Jun 1995 – Feb 2001 |