| Roche G-2-194041 | C & E Operating, Inc. | Black Bull (Frio 4230) | 1 | 399 | 2.31M | Apr 2001 – Jul 2013 |
| Heard, C.E. "B" G-2-44896 | Lakeshore Operating, LLC | Heard Ranch (4300) | 1 | 398 | 1.58M | by Jan 1993 – Aug 2026 |
| Hartzendorf et Al O-2-8708 | Halex Oil Corporation | Tynan (4070) | 1 | 394 | 0 | May 2002 – Aug 2002 |
| Hughes G-2-269780 | Enco Exploration Company | Beeville, NW. (Pettus) | 1 | 392 | 8.74K | Apr 2013 – Jul 2013 |
| Berger, Martha et Al G-2-4269 | Spindletop Oil & Gas Company | Strauch-Wilcox (Slick 7900) | 1 | 381 | 29.1K | by Jan 1993 – Jan 1995 |
| Murphy, John O-2-7734 | Coker, Jonathan C., Inc. | Papalote, E. (3250 -B-) | 1 | 379 | 21 | by Jan 1993 – Oct 1994 |
| McFall-Kerby O-2-8980 | Halex Oil Corporation | Rudman, W. (Luling 6790) | 1 | 378 | 644 | Apr 2005 – Apr 2005 |
| Box, B.A. O-2-6434 | Texas, Les & Co. | Norbee, S.E. (Hockley) | 1 | 377 | 2.01K | by Jan 1993 – Jul 1999 |
| Heard, C. E. "B" G-2-236095 | Milagro Exploration, LLC | Heard Ranch (4400) | 1 | 372 | 654K | Sep 2007 – Mar 2013 |
| Lewis Ranch G-2-177524 | Welder Exploration & Prod., Inc. | Poesta Creek, N. (Hockley) | 1 | 369 | 75.8K | Nov 1999 – Nov 2001 |
| Roche G-2-183168 | C & E Operating, Inc. | Roche Ranch (Frio 3756) | 1 | 368 | 1M | Jan 2001 – Feb 2006 |
| Johnston Gas Unit 2 G-2-260032 | Falcon Production LLC | Sugarkane (Eagle Ford) | 1 | 367 | 50.8K | May 2011 – Nov 2013 |
| Sylva G-2-263701 | Welder Exploration & Prod., Inc. | Yougeen (5500) | 1 | 356 | 62.4K | Oct 2011 – Apr 2013 |
| Johnson-Seale O-2-5901 | Nelson, James L. | Normanna, W. (Hockley 3550) | 1 | 353 | 49 | by Jan 1993 – May 1995 |
| Heard, C. E. "B" G-2-232897 | Lakeshore Operating, LLC | Heard Ranch (3650) | 1 | 347 | 454K | Aug 2007 – Mar 2020 |
| Littlejohn Gas Unit No. 2 G-2-59835 | Hydrocarbon Operating, Inc. | Norbee (Slick) | 1 | 344 | 8.73K | by Jan 1993 – Jan 1995 |
| Roche G-2-183261 | C & E Operating, Inc. | Black Bull (Frio 4230) | 1 | 344 | 1.94M | Jan 2001 – Mar 2007 |
| Le Blanc G-2-147642 | Enron Oil & Gas Company | Tuleta, East (Luling) | 1 | 343 | 28K | Nov 1993 – Mar 1994 |
| Wtu Hall G-2-157146 | West Tuleta Operating Corp. | Tuleta, West (7800) | 1 | 337 | 13.1K | Jan 1996 – May 1996 |
| Heard,c.e "B" G-2-230423 | Lakeshore Operating, LLC | Heard Ranch (3650) | 1 | 336 | 482K | Apr 2007 – Mar 2020 |
| Bissett, Clark G-2-104814 | Paleo Oil Company LLC | Hockley (4630) | 1 | 330 | 133K | by Jan 1993 – Jan 2017 |
| Long G-2-173060 | Enco Exploration Company | Fred Long (3RD Slick) | 1 | 328 | 126K | Feb 1999 – Apr 2004 |
| Npu (Union-Ray -59 ) G-2-143376 | Paleo Oil Company LLC | Tulsita-Wilcox ( 6800 Reklaw) | 1 | 325 | 1.39M | by Jan 1993 – May 2020 |
| Heard, C.E. "B" G-2-235987 | Lakeshore Operating, LLC | Heard Ranch (4400) | 1 | 321 | 1.4M | Nov 2007 – Aug 2026 |
| Heard, C. E. "B" G-2-166892 | Milagro Exploration, LLC | Heard Ranch (3650) | 1 | 321 | 1.7M | Jan 1998 – Jul 2014 |
| Bolland G-2-171222 | Amrwr, LLC | Bolland Ranch, S. (Pettus 4590) | 1 | 320 | 72.4K | Sep 1998 – Oct 1999 |
| Davis, Nona Berry G-2-231283 | Welderxp Ltd. | Yougeen (Vicksburg 3700) | 1 | 318 | 605K | Oct 2007 – Oct 2024 |
| Peterson G-2-226243 | Vision Oil and Gas LLC | Garden (Middle Wilcox) | 1 | 298 | 11.5K | Jan 2007 – May 2008 |
| Heard, C.E. "B" G-2-230205 | Milagro Exploration, LLC | Heard Ranch (Frio Z) | 1 | 292 | 507K | Aug 2006 – Jan 2009 |
| Evans, J. E. O-2-8249 | Tidewater Minerals Corporation | Yougeen | 1 | 292 | 0 | Mar 1997 – Aug 2003 |
| Roberts G.U. G-2-170257 | Edge Petroleum Oper. Co., Inc. | Malone Ranch (Pettus, Up.) | 1 | 290 | 69.1K | Jun 1998 – Jan 1999 |
| Schilling O-2-11485 | Paleo Oil Company LLC | Yougeen (Hockley 4500) | 1 | 288 | 0 | Oct 2019 – Dec 2020 |
| Johnston G-2-256366 | Gaither Petroleum Corporation | Tuleta, East (Luling) | 1 | 287 | 13.2K | Aug 2009 – Aug 2018 |
| Malone G-2-249247 | Enco Exploration Company | Friendship Church (3700) | 1 | 278 | 116K | Apr 2009 – Nov 2012 |
| Young, George O-2-6695 | Mission River Systems, Inc. | Cosden, W. (3050 Sand) | 1 | 275 | 7.56K | Feb 1993 – Apr 2001 |
| Dirks-McKenzie G-2-131462 | RR Ventures Limited Partnership | Dirks (Hockley 3300) | 1 | 275 | 25.5K | Jun 1993 – Apr 2004 |
| Ordner G-2-184395 | Enco Exploration Company | Beeville, Sw.(pettus 4525) | 1 | 272 | 132K | Apr 2001 – Mar 2003 |
| Freeland, J. M. G-2-163165 | Wallis Energy, Inc. | Pettus (2200) | 1 | 266 | 120K | Apr 1997 – May 2002 |
| Obrien, Mick & Dick G-2-173232 | Welder Exploration & Prod., Inc. | Murphy Sisters (Frio 3600) | 1 | 265 | 268K | Apr 1999 – Nov 2006 |
| Eberstadt G-2-202647 | Hughes, Dan A. Company, L.P. | Caesar, South (Wilcox 9770) | 1 | 260 | 94.3K | Mar 2004 – Oct 2006 |
| H. E. Yoward O-2-11459 | SRS Properties, LLC | Yoward, Mackhank (7850) | 1 | 256 | 4.85K | Dec 2017 – Jan 2022 |
| Wernli 01 G-2-268779 | Marathon Oil EF LLC | Sugarkane (Eagle Ford) | 1 | 255 | 1.63M | Aug 2012 – Jul 2026 |
| Davis, Nona Berry G-2-240560 | Welderxp Ltd. | Yougeen (Hockley 4500) | 1 | 255 | 81.7K | Jun 2008 – Oct 2010 |
| Heard, C.E. -B- G-2-124816 | Lakeshore Operating, LLC | Heard Ranch (4300) | 1 | 255 | 1.03M | by Jan 1993 – Feb 2020 |
| Savage G-2-144192 | Yuma Petroleum Company | Poesta Creek (3800) | 1 | 250 | 371 | by Jan 1993 – May 1993 |
| Heard, C. E. -B- G-2-114623 | Smith Production Inc. | Heard Ranch (4000) | 1 | 244 | 160K | by Jan 1993 – Sep 1995 |
| Perez, Felipe G-2-184232 | Britanco, L.L.C. | Hockley (3535) | 1 | 243 | 256K | Aug 2000 – Aug 2026 |
| Brown G-2-267866 | Trailblazer Oil & Gas LLC | Norbee, S.E. (Hockley) | 1 | 242 | 112K | May 2012 – Dec 2025 |
| Dugat G-2-225499 | Tidal Petroleum, Inc. | Beeville, North (Yegua 4900) | 1 | 238 | 40K | Mar 2006 – Feb 2007 |
| McFall-Kerbey G-2-195442 | Odegard Energy, Inc. | Rudman, W. (Wilcox 7460) | 1 | 236 | 19.2K | Apr 2003 – Jul 2003 |