| Heller, Walter E., et Al G-2-1114 | Anderson Oil Ltd. | Caesar, South (Slick) | 1 | 152 | 77.8K | Feb 1993 – Dec 1996 |
| Davis, Nona Berry G-2-262151 | Welderxp Ltd. | Yougeen (Hockley 4500) | 1 | 150 | 10.1K | Jul 2011 – Aug 2026 |
| C.E. Heard "B" G-2-230418 | Lakeshore Operating, LLC | Heard Ranch (Frio Z) | 1 | 150 | 434K | Mar 2007 – Aug 2026 |
| Thomson-Barrow Corp. G-2-161804 | C & E Operating, Inc. | Burkes Ridge (2040) | 1 | 149 | 205K | Jan 1997 – Oct 2012 |
| Finger et al Unit G-2-282337 | Zachry Exploration, LLC | Singleton (Hockley 3800) | 1 | 148 | 6.84K | Jan 2017 – Mar 2017 |
| Davis, Nona Berry G-2-234230 | Welderxp Ltd. | Yougeen (Stillwell 4100) | 1 | 147 | 807K | Oct 2007 – Oct 2024 |
| Turner, I. M. O-2-6363 | Staples, James W. Prod. Co. | San Domingo, S. (Hockley) | 1 | 146 | 83 | by Jan 1993 – Nov 1999 |
| Mixon 01 G-2-266452 | Marathon Oil EF LLC | Sugarkane (Eagle Ford) | 1 | 146 | 886K | Mar 2012 – Aug 2026 |
| Rapp G-2-189736 | Dirnett, Inc. | Tuleta, West (Hockley) | 1 | 143 | 278K | May 2002 – Jul 2005 |
| Mansker Ranch G. U. G-2-208571 | Pioneer Natural Res. USA, Inc. | Pawnee (Edwards) | 1 | 143 | 1.34M | Aug 2004 – Mar 2015 |
| Heard, C. E. "B" G-2-223043 | Lakeshore Operating, LLC | Heard Ranch (3650) | 1 | 142 | 230K | Aug 2006 – May 2023 |
| Fox, J. E., et Al G-2-180965 | Rincon Petroleum Corporation | Caesar, South (Massive) | 1 | 141 | 7.62K | Oct 2000 – Apr 2001 |
| Obrien, J. M. III G-2-172422 | Welder Exploration & Prod., Inc. | Murphy Sisters (Frio 3600) | 1 | 137 | 1.04M | Dec 1998 – Nov 2006 |
| Ray G-2-232140 | Paleo Oil Company LLC | Tulsita-Wilcox (MWC) | 1 | 137 | 61.9K | Sep 2007 – Dec 2011 |
| Heard, C. E. -B- G-2-78995 | Smith Production Inc. | Heard Ranch (4400) | 1 | 135 | 394K | by Jan 1993 – Dec 1997 |
| Heard, C. E. "B" G-2-230419 | Lakeshore Operating, LLC | Heard Ranch (4300) | 1 | 134 | 395K | Apr 2007 – Jul 2025 |
| Heard, C. E. "B" G-2-143094 | Milagro Exploration, LLC | Heard Ranch (3650) | 1 | 130 | 595K | by Jan 1993 – Mar 2004 |
| Starr-Gunn G-2-278333 | Welderxp Ltd. | Helm (Pettus) | 1 | 130 | 65.9K | Sep 2014 – Oct 2018 |
| Stauss G-2-188810 | Trailblazer Oil & Gas LLC | Hockley (3535) | 1 | 130 | 125K | Apr 2001 – Oct 2009 |
| Byles, J. C. "a" et Al G-2-180993 | Stone Trucking Company, Inc. | Caesar, South (Massive) | 1 | 128 | 2.18K | Nov 2000 – Jan 2009 |
| Npu (Ray 112) G-2-232873 | Paleo Oil Company LLC | Tulsita-Wilcox (MWC) | 1 | 128 | 47.3K | Oct 2007 – Jul 2026 |
| Oneal Gas Unit G-2-198032 | Blackbrush O & G, LLC | Pawnee (Edwards) | 1 | 127 | 3.58M | Jul 2003 – Aug 2026 |
| Edler, J. B. G-2-211845 | Welderxp Ltd. | Yougeen (Vicksburg 3700) | 1 | 126 | 108K | May 2005 – Oct 2025 |
| Wicker G-2-190745 | Welder Exploration & Prod., Inc. | Heard Ranch Central (U. Yegua) | 1 | 126 | 13.9K | May 2002 – May 2005 |
| Heard, C. E. G-2-195703 | Milagro Exploration, LLC | Heard Ranch Central (U. Yegua) | 1 | 125 | 1.4K | Dec 2002 – Dec 2002 |
| Malone, W. G-2-192180 | Charro Operating, L.L.C. | Blanconia (4000 Sinton) | 1 | 125 | 582K | Jan 2002 – May 2007 |
| Hughes, D. A. G-2-195473 | Acock/Anaqua Operating Co., LP | Coquat (10500) | 1 | 125 | 9.47K | Apr 2003 – Oct 2003 |
| Gingerich, George C. G-2-112508 | Britanco, L.L.C. | Tuleta, West (Hockley 3100) | 1 | 124 | 388K | by Jan 1993 – Aug 2026 |
| Roche G-2-183360 | C & E Operating, Inc. | Black Bull (Frio 4230) | 1 | 124 | 806K | Jan 2001 – Oct 2005 |
| Baker-Smith G-2-185395 | C & E Operating, Inc. | Black Bull (Frio 4230) | 1 | 124 | 467K | Aug 2001 – Dec 2004 |
| Grissom G-2-196197 | Hughes, Dan A. Company, L.P. | Grissom (Pettus) | 1 | 124 | 164K | Jun 2003 – Jan 2007 |
| Young, George O-2-6359 | Mission River Systems, Inc. | Dirks | 1 | 123 | 15 | Feb 1993 – Jan 2001 |
| McFall Kerby G-2-151043 | Hoc Operating Co., Inc. | Rudman (Massive 7100) | 1 | 121 | 42.6K | Jul 1994 – Apr 1996 |
| Turner Gas Unit G-2-214410 | Blackbrush O & G, LLC | Pawnee (Edwards) | 1 | 120 | 2.77M | Aug 2005 – Aug 2026 |
| Martin, D. G-2-167840 | Edge Petroleum Oper. Co., Inc. | Beeville, North (Yegua 4900) | 1 | 120 | 15.3K | Jan 1998 – Mar 1998 |
| Gordon Gas Unit G-2-58334 | Blackbrush O & G, LLC | Pawnee (Edwards) | 1 | 120 | 13.7M | by Jan 1993 – Aug 2026 |
| McFall, Kerbey G-2-143459 | Hoc Operating Co., Inc. | Rudman, W. (Wilcox 7460) | 1 | 120 | 42K | by Jan 1993 – Jun 1994 |
| Mansker Ranch Gas Unit G-2-253314 | Pioneer Natural Res. USA, Inc. | Pawnee (Edwards) | 1 | 119 | 1.02M | Feb 2008 – Apr 2015 |
| Heard, C. E. "B" G-2-216502 | Milagro Exploration, LLC | Heard Ranch (Frio Z) | 1 | 117 | 149K | Aug 2005 – May 2008 |
| Malone -B- G-2-245928 | T-C Oil Company, LLC | Medio Creek (3000) | 1 | 113 | 851K | Jan 2009 – Nov 2013 |
| Pouliot, Julia M. G-2-149602 | J & M Well Salvage Company | Highline (12,800) | 1 | 112 | 123K | Nov 1993 – Feb 1995 |
| Nse O'Brien G-2-247294 | Amrwr, LLC | Blanconia (4960) | 1 | 112 | 228K | Oct 2008 – Aug 2012 |
| Benham Gas Unit G-2-282730 | Blackbrush O & G, LLC | Pawnee, S. (Wilcox) | 1 | 111 | 86 | Jun 2017 – Jun 2017 |
| Thomas, F. V. G-2-148950 | Bridwell Oil Co. | Blanconia | 1 | 111 | 56.9K | Feb 1994 – Jul 2001 |
| Going Winnie Madge Gas Unit G-2-203952 | Blackbrush O & G, LLC | Pawnee (Edwards) | 1 | 110 | 2.18M | May 2004 – Aug 2026 |
| Brown G-2-287930 | Trailblazer Oil & Gas LLC | Norbee (Hockley 3700) | 1 | 109 | 48.5K | Mar 2019 – Jan 2026 |
| South Goree G-2-244452 | Tidal Petroleum, Inc. | Cannan, E. (10300 Wilcox) | 1 | 107 | 16K | Nov 2008 – Apr 2009 |
| Erp, W. E. G-2-43178 | Alltex Operating Company | Plummer-Wilcox (Recklaw) | 1 | 104 | 152K | by Jan 1993 – Mar 2002 |
| O'Brien Ranch G-2-225506 | Welderxp Ltd. | Murphy Sisters (Frio 3600) | 1 | 101 | 350K | Jul 2007 – Jan 2019 |
| York O-2-8832 | Hughes, Dan A. Company | Holzmark (Pettus 4150) | 1 | 100 | 1.9K | Jun 2003 – Aug 2003 |