| Block #22 O-2-1122 | H & G Oil | Pettus | 1 | 3.18K | 35 | by Jan 1993 – Sep 1996 |
| Thomson-Barrow Corp. G-2-160452 | C & E Operating, Inc. | Papalote (4800) | 1 | 3.17K | 1.33M | Aug 1996 – Oct 2012 |
| Hughes O-2-10596 | Headwaters Energy Partners, LLC | Beeville, NW. (Pettus) | 1 | 3.17K | 0 | Aug 2013 – Oct 2013 |
| Edler, J.B, G-2-183644 | Welderxp Ltd. | Yougeen (Hockley 4500) | 1 | 3.17K | 404K | May 2001 – Apr 2026 |
| Helm-Arburn Unit G-2-245473 | Vision Oil and Gas LLC | Causey (11,100) | 1 | 3.17K | 109K | Jan 2009 – Aug 2010 |
| Wright O-2-6966 | Republic Resources, LLC. | San Domingo, S. (Hockley) | 1 | 3.17K | 112K | by Jan 1993 – Nov 1998 |
| Bear Creek Ranch G-2-143880 | Discovery Energy Corp. CC | Singleton, E. (Hockley) | 1 | 3.16K | 166K | by Jan 1993 – May 1995 |
| Duty G-2-158705 | Felderhoff Production Company | Normanna, E. (Yegua) | 1 | 3.15K | 556K | Apr 1996 – Nov 1999 |
| Schauer G-2-182605 | Dougherty Brothers Oil & Gas | Beeville, NW. (Hockley) | 1 | 3.15K | 57.1K | Jan 2001 – Apr 2008 |
| B. U. Magnolia-Ingram G-2-39706 | Paleo Oil Company LLC | Burnell (Slick) | 1 | 3.04K | 546K | by Jan 1993 – Jul 2026 |
| Hicks Parker Unit O-2-6011 | Saxum Oil & Gas, LLC | Holzmark (Hockley) | 1 | 3.01K | 27 | by Jan 1993 – May 2003 |
| Farley O-2-6323 | Staples, James W. Prod. Co. | San Domingo, S. (Hockley) | 1 | 2.97K | 88 | by Jan 1993 – Nov 2001 |
| Collier G-2-211704 | Enco Exploration Company | Beeville, North (Yegua 4900) | 1 | 2.96K | 129K | Apr 2005 – Nov 2008 |
| Borroum G-2-207884 | Endeavor Natural Gas, LP | Caesar, South (Wilcox 9770) | 1 | 2.95K | 240K | Oct 2004 – May 2010 |
| Shinn Gas Unit G-2-148463 | Prime Operating Company | Tuleta (4400) | 1 | 2.94K | 69K | Jan 1994 – Mar 1996 |
| Dougherty G-2-237860 | Continental Operating Co. | Normanna (Basal Luling) | 1 | 2.91K | 268K | Apr 2008 – Apr 2011 |
| Carpenter O-2-10770 | Enco Exploration Company | Beeville, North (Yegua 4900) | 1 | 2.9K | 6.2K | Jan 2014 – Dec 2017 |
| Algea, Adolph B. G-2-38788 | Wagner Oil Company | Orangedale (Luling) | 1 | 2.89K | 553K | by Jan 1993 – Aug 2003 |
| Spindletop Gas Unit G-2-207222 | Gulfstar Properties, Inc. | Normanna (Consolidated) | 1 | 2.87K | 381K | Apr 2004 – Jan 2016 |
| Grissom, John J. O-2-2029 | Staples, James W. | Dahl (Slick Sand) | 1 | 2.85K | 92 | by Jan 1993 – Nov 2000 |
| Luckenbach G-2-233238 | Continental Operating Co. | Mineral (Mackhank, Lo.) | 1 | 2.84K | 146K | Sep 2007 – Jul 2011 |
| Griffith & Associates O-2-8728 | C & E Operating, Inc. | Papalote (4500) | 1 | 2.81K | 0 | Jun 2002 – Oct 2006 |
| Npu ( Ray -1 ) G-2-4545 | Paleo Oil Company LLC | Tulsita-Wilcox ( Slick) | 1 | 2.81K | 1.73M | by Jan 1993 – Dec 2015 |
| Heard, C. E. O-2-8517 | Welder Exploration & Prod., Inc. | Heard Ranch Central (U. Yegua) | 1 | 2.77K | 39.8K | Sep 1999 – Jan 2000 |
| Bush, Edith Smith O-2-5643 | Staples, James W. Prod. Co. | San Domingo, S. (Hockley) | 3 | 2.72K | 2.01K | by Jan 1993 – Oct 2014 |
| Carpenter G-2-270936 | Trailblazer Oil & Gas LLC | Healey (Yegua 4824) | 1 | 2.69K | 528K | Sep 2013 – Jul 2021 |
| Sparkman, Porter L. G-2-106006 | Wofford, C. J. | Mineral, North (9750) | 1 | 2.68K | 109K | by Jan 1993 – Sep 2006 |
| Brinkoeter Parteners, Ltd "B" G-2-190356 | Hughes, Dan A. Company | Cosden (Wilcox 10,170) | 1 | 2.67K | 104K | Mar 2002 – Sep 2002 |
| Holt, A. G. G-2-108202 | Paleo Oil Company LLC | Hockley (4720) | 1 | 2.67K | 550K | by Jan 1993 – Jul 2026 |
| McKinney, J. E. G-2-145787 | Hughes, Dan A. Company | Pettus, S.E. (Slick) | 1 | 2.65K | 42.9K | May 1993 – Sep 1995 |
| Npu ( Ray -96 ) G-2-163134 | Paleo Oil Company LLC | Tulsita-Wilcox ( 6800 Reklaw) | 1 | 2.61K | 785K | May 1997 – Apr 2020 |
| Whiddon-Seger Gas Unit G-2-266292 | Poco LLC | Linke (5900) | 1 | 2.6K | 102K | Mar 2012 – Oct 2012 |
| Davis, Nona Berry G-2-259933 | Welder Exploration & Prod., Inc. | Yougeen (Yegua 5400) | 1 | 2.6K | 328K | Nov 2010 – Jan 2013 |
| Rhodes O-2-7987 | Southwest Land & Minerals, Inc. | Holzmark | 1 | 2.58K | 9 | Jul 1994 – Apr 1995 |
| Npu (Ray 110) G-2-229713 | Paleo Oil Company LLC | Tulsita-Wilcox ( Slick) | 1 | 2.58K | 1.26M | Jun 2007 – Jul 2026 |
| Brooks Trust NO.2 G.U.#2 G-2-181122 | Dirks Petroleum Company | Cadiz, North (Slick-Wilcox) | 1 | 2.58K | 223K | Sep 2000 – Feb 2008 |
| Page/Mineral Unit G-2-126926 | Rincon Petroleum Corporation | Mineral (Massive) | 1 | 2.56K | 314K | by Jan 1993 – Mar 2016 |
| Campbell 1320 O-2-10447 | Sydson Energy, Inc. | Ray (Vicksburg-Hockley) | 1 | 2.56K | 45.3K | Dec 2012 – May 2026 |
| Brown O-2-9428 | Enco Exploration Company | Beeville, Sw.(pettus 4525) | 1 | 2.55K | 39.8K | May 2010 – Jul 2011 |
| Whiddon O-2-10409 | Enco Exploration Company | Beeville, W. (Hockley) | 1 | 2.55K | 48.6K | Oct 2012 – Dec 2014 |
| Thomson-Barrow Corp. G-2-165323 | C & E Operating, Inc. | Burkes Ridge (2040) | 1 | 2.53K | 609K | Sep 1997 – Jan 2013 |
| Grissom G-2-230790 | Tidal Petroleum, Inc. | Cosden, West (Wilcox 9500) | 1 | 2.51K | 65.2K | Sep 2007 – Dec 2012 |
| Cicada G-2-300335 | Rosewood Resources, Inc. | Sugarkane (Eagle Ford) | 1 | 2.5K | 677K | Dec 2025 – Aug 2026 |
| Smith O-2-9210 | Choice Exploration, Inc. | Singleton (Pettus) | 1 | 2.49K | 0 | Jan 2008 – Mar 2009 |
| May Unit G-2-169357 | Edge Petroleum Oper. Co., Inc. | Beeville, SW. (Pettus, Lo.) | 1 | 2.49K | 273K | May 1998 – Apr 2001 |
| Malone G-2-262199 | Enco Exploration Company | Fred Long (Hockley 3850) | 1 | 2.48K | 31.6K | Aug 2011 – Nov 2012 |
| Goree O-2-9245 | Tidal Petroleum, Inc. | Cannan, E. (10300 Wilcox) | 1 | 2.47K | 145K | Mar 2008 – Mar 2011 |
| Walton, G. W. G-2-34564 | Wagner Oil Company | Ray-Wilcox (Luling) | 1 | 2.45K | 621K | by Jan 1993 – Sep 1999 |
| Born A G-2-260391 | BHP Billiton Pet(txla OP) Co | Sugarkane (Eagle Ford) | 1 | 2.43K | 673K | Dec 2010 – Apr 2017 |
| Edler, J. B. G-2-211840 | Welderxp Ltd. | Yougeen (Hockley 4500) | 1 | 2.35K | 324K | May 2005 – Oct 2025 |