| Collier O-2-9329 | Trailblazer Oil & Gas LLC | Norbee, W. (Hockley, 3700) | 3 | 32.1K | 29K | Jun 2007 – Mar 2025 |
| Ray, George A. G-2-192638 | Devon Energy Production Co, L.P. | Kerr (Massive) | 1 | 31.8K | 2.05M | Nov 2002 – Mar 2006 |
| RTC O-2-12509 | Paleo Oil Company LLC | Pawnee (Slick) | 2 | 30.8K | 61 | Jul 2022 – Feb 2026 |
| Staples, Jr. J. O-2-8475 | Saxum Oil & Gas, LLC | Tuleta | 3 | 30.1K | 32.9K | Sep 1999 – Dec 2001 |
| Ingle O-2-10550 | Trailblazer Oil & Gas LLC | Fred Long (Hockley 3850) | 2 | 30K | 94.7K | May 2013 – Oct 2019 |
| Ray, George A. O-2-8039 | Owl Creek Production Co., Inc. | Tulsita-Wilcox (Era) | 1 | 29.6K | 193K | Dec 1994 – Mar 2003 |
| Evans Bros. O-2-8202 | Welderxp Ltd. | Yougeen | 4 | 29.5K | 0 | Sep 1996 – Apr 2026 |
| Hall, Imogene Unit O-2-6616 | Britanco, L.L.C. | Tuleta, West (2800) | 5 | 29.4K | 178K | by Jan 1993 – Nov 2021 |
| Murphy, John -B- O-2-7025 | Granite Crossing, LLC | Papalote, E. (3250) | 1 | 29.3K | 62 | by Jan 1993 – Apr 2026 |
| Pogue "A" O-2-6431 | Aurora Resources Corporation | Pawnee, S. (Lulling) | 1 | 29.2K | 26.9K | by Jan 1993 – May 2002 |
| Karen Kennedy Unit A G-2-298231 | Burlington Resources O & G Co LP | Sugarkane (Eagle Ford) | 1 | 28.9K | 1.39M | Feb 2024 – Apr 2026 |
| Benham O-2-8851 | Pioneer Natural Res. USA, Inc. | Pawnee, S. (Wilcox) | 1 | 28.8K | 514K | Dec 2003 – Dec 2016 |
| Finger et al Unit G-2-263097 | Zachry Exploration, LLC | Singleton (Pettus) | 1 | 28.8K | 78.5K | Mar 2012 – Sep 2014 |
| Eberstadt, et Al G-2-153460 | Oil & Gas Acquisition Group, Inc | Caesar, South (Massive) | 1 | 28.5K | 909K | Nov 1994 – Jun 2001 |
| Turner G-2-196826 | Pioneer Natural Res. USA, Inc. | Pawnee, S. (Wilcox) | 1 | 28K | 188K | Feb 2003 – Dec 2003 |
| Murphy, Willie O-2-9073 | Bridwell Oil Co. | Papalote, E. (3250) | 2 | 27.9K | 0 | Sep 2006 – Apr 2026 |
| Collier O-2-11387 | Trailblazer Oil & Gas LLC | Beeville, Sw.(pettus 4525) | 1 | 27.5K | 28.6K | Oct 2017 – Nov 2024 |
| Young, S.E. et Al G-2-94179 | Welder Exploration & Prod., Inc. | Cosden (Z-12) | 1 | 27.2K | 1.75M | by Jan 1993 – Nov 2013 |
| Dubose, R. R. O-2-1745 | SRS Properties, LLC | Yoward | 1 | 27.2K | 280K | by Jan 1993 – Jan 2025 |
| Shaw, John B. O-2-6765 | Vaquero Operating | San DOMINGO,S.(HOCKLEY,2ND) | 2 | 26.9K | 8.32K | by Jan 1993 – Mar 2022 |
| Schroeder O-2-9065 | Pioneer Natural Res. USA, Inc. | Pawnee (Wilcox) | 1 | 26.7K | 168K | Mar 2006 – Jan 2009 |
| Stauss, Ida et Al O-2-6918 | Britanco, L.L.C. | Tuleta, West (Hockley 3100) | 1 | 26.6K | 12.6K | by Jan 1993 – Apr 2026 |
| J. C. Byles Unit G-2-210314 | Rincon Petroleum Corporation | Cosden, West (Wilcox 9500) | 1 | 26.3K | 1.28M | Jan 2005 – Mar 2026 |
| Erp, Will E. O-2-4479 | LT Oil LLC | Ella Borroum (Slick) | 1 | 26K | 275 | by Jan 1993 – Dec 2016 |
| Wtu Hall G-2-137905 | Britanco, L.L.C. | Tuleta, West (9570) | 1 | 26K | 2.16M | Feb 1993 – Jun 2025 |
| Brown O-2-9441 | Trailblazer Oil & Gas LLC | Beeville, North (Yegua 4900) | 1 | 25.6K | 81.8K | Apr 2010 – Oct 2025 |
| Keller G-2-217085 | Vision Oil and Gas LLC | Cannan, E. (10300 Wilcox) | 1 | 25.5K | 1.23M | Nov 2005 – Aug 2022 |
| RTC O-2-12961 | Paleo Oil Company LLC | Pawnee, S. (Lulling) | 2 | 25.3K | 121 | Nov 2024 – Feb 2026 |
| Brashear et al Unit G-2-124093 | Nog Production & Operating LLC | Mineral, North (9750) | 1 | 25.1K | 870K | by Jan 1993 – Mar 2026 |
| N.P.U. (Ray 98) G-2-173609 | Paleo Oil Company LLC | Tulsita-Wilcox (MWC) | 1 | 25.1K | 1.63M | Apr 1999 – Jan 2019 |
| Holzmark G-2-210756 | Nog Production & Operating LLC | Holzmark, E. (2ND Massive) | 1 | 25.1K | 920K | Mar 2005 – Aug 2018 |
| Borroum "B" G-2-105767 | Sun Exploration, Inc. | Plummer-Wilcox (8500) | 1 | 25K | 1.55M | by Jan 1993 – Feb 2013 |
| Boswell 01 G-2-268947 | Marathon Oil EF LLC | Sugarkane (Eagle Ford) | 1 | 24.8K | 1.34M | Oct 2012 – Apr 2026 |
| Opiela 01 G-2-270647 | Marathon Oil EF LLC | Sugarkane (Eagle Ford) | 1 | 24.6K | 1.33M | Mar 2013 – Mar 2026 |
| Hughes, J. W. FLP G-2-164577 | C & E Operating, Inc. | Heard Ranch (4800) | 1 | 24.4K | 283K | Aug 1997 – Oct 1998 |
| Knight Ranch G-2-221776 | Welderxp Ltd. | Cannan, South (10100 Wilcox) | 1 | 24.4K | 823K | Aug 2006 – Apr 2026 |
| Smith, L. C. O-2-8382 | Edge Petroleum Oper. Co., Inc. | Healey (4720) | 1 | 24.3K | 0 | Jun 1998 – Feb 2003 |
| Kerbey O-2-7147 | Halex Oil Corporation | Rudman, West (Slick) | 1 | 24.2K | 115K | by Jan 1993 – Sep 2020 |
| Beck, Ottar Gas Unit G-2-3288 | H & P Exploration Co. | Normanna (Consolidated) | 1 | 23.8K | 2.62M | by Jan 1993 – Apr 2012 |
| McFall Kerbey O-2-8187 | Halex Oil Corporation | Rudman, West (Slick) | 1 | 23.8K | 93.6K | May 1996 – Oct 2009 |
| Karen Kennedy Unit A G-2-298235 | Burlington Resources O & G Co LP | Sugarkane (Eagle Ford) | 1 | 23.8K | 1.35M | Feb 2024 – Apr 2026 |
| Kelly Gas Unit G-2-225891 | Paleo Oil Company LLC | Theis, South(slick First) | 1 | 23.5K | 1.12M | Jan 2007 – Nov 2016 |
| Postel 01 G-2-267757 | Marathon Oil EF LLC | Sugarkane (Eagle Ford) | 1 | 23.3K | 1.39M | Mar 2012 – Apr 2026 |
| May G-2-175396 | Apex Energy, Inc. | May Ranch (Hockley) | 1 | 23.2K | 13.4K | Aug 1998 – Sep 1999 |
| Schrade Unit G-2-193060 | Petrovybe Opco LLC | Caesar, South (Wilcox 9770) | 1 | 23.1K | 1.72M | Mar 2002 – Apr 2026 |
| Seale O-2-9849 | Headwaters Energy Partners, LLC | Beeville, North (Yegua 4900) | 1 | 22.9K | 9.18K | Jul 2011 – May 2020 |
| Knight Ranch G-2-229624 | Welderxp Ltd. | Cannan, South (10100 Wilcox) | 1 | 22.8K | 956K | Jun 2007 – Feb 2024 |
| Sugarek O-2-9997 | 2 D Oil & Gas LLC | Sliva, Southwest (Frio Russell) | 1 | 22.6K | 6.03K | Jan 2011 – Jul 2025 |
| Spielhagen, E. J. -B- O-2-345 | CTR Petroleum, Inc. | Cosden, West | 3 | 22.5K | 21 | by Jan 1993 – Jul 2004 |
| Beck, Mangus O-2-6574 | Staples, James W. Prod. Co. | San Domingo, S. (3100 Sd.) | 2 | 22.4K | 795 | by Jan 1993 – Mar 2026 |