| Thomson-Barrow Corp. G-2-158792 | C & E Operating, Inc. | Papalote (4800) | 1 | 6.13K | 1.62M | Jul 1996 – Oct 2012 |
| Brown, Austin G-2-228044 | Vision Oil and Gas LLC | Holzmark, E. (10,300) | 1 | 6.1K | 587K | Apr 2007 – Nov 2018 |
| Green, Helen G-2-224274 | Vision Oil and Gas LLC | Garden (Middle Wilcox) | 1 | 6.08K | 221K | Nov 2006 – Nov 2021 |
| Curlee-Griffith Unit O-2-4667 | Javelina Oil & Gas Development | Berkow (Kohler) | 1 | 6.07K | 2.05K | by Jan 1993 – May 2001 |
| Carpenter G-2-210769 | Blue Flame Operating Company LLC | Theis, South(slick First) | 1 | 6.02K | 314K | Apr 2005 – Jul 2021 |
| Fox, J. E., et Al O-2-3384 | Rincon Petroleum Corporation | Caesar, South (Luling) | 5 | 5.89K | 37 | by Jan 1993 – Jun 1996 |
| Ray, George A. G-2-219741 | Paleo Oil Company LLC | Kerr (Luling) | 1 | 5.87K | 257K | Jan 2006 – Jul 2026 |
| Finger et al Unit O-2-10947 | Zachry Exploration, LLC | Singleton (Pettus) | 1 | 5.84K | 6.84K | Oct 2014 – Mar 2017 |
| South Texas Childrens Home G-2-145618 | Wofford, C. J. | Mineral, North (8200) | 1 | 5.83K | 134K | May 1993 – Dec 2007 |
| Ray, George A. G-2-121232 | Sydson Energy, Inc. | Ray | 1 | 5.81K | 400K | by Jan 1993 – Apr 2015 |
| Barrow, Laura T. G-2-91875 | Durango Resources Corp. | Laura Thomson (4850) | 1 | 5.77K | 1.59M | by Jan 1993 – Apr 2012 |
| Riggle G-2-255429 | Welder Exploration & Prod., Inc. | Yougeen (5500) | 1 | 5.74K | 418K | Feb 2010 – Jan 2013 |
| Page, Gladys G-2-99255 | Welderxp Ltd. | Cosden (Z-12) | 1 | 5.73K | 390K | by Jan 1993 – Mar 2003 |
| T & H Ranch O-2-7848 | Ipact | Tynan (F-6) | 1 | 5.72K | 3.1K | by Jan 1993 – Jan 2009 |
| Wtu-Gill G-2-255898 | Britanco, L.L.C. | Tuleta, West (Slick-Wilcox 7900) | 1 | 5.67K | 516K | Feb 2010 – Aug 2026 |
| M.K. O'Brien Unit O-2-11353 | Dynamic Production, Inc. | Blanconia | 1 | 5.65K | 0 | May 2017 – Jul 2017 |
| Roberts G-2-132578 | Hyquest Energy, Inc. | Strauch-Wilcox (Slick 8000) | 1 | 5.63K | 363K | by Jan 1993 – Feb 1994 |
| Bradford, James Gas Unit G-2-148731 | Wagner, Duer & Co. | Tuleta-Wilcox, South (Luling) | 1 | 5.61K | 809K | Feb 1994 – Jun 1998 |
| Barrow, L. T., -A- O-2-4110 | JTB Oil Company, Inc. | Papalote, E. (3200 B Stringer) | 1 | 5.6K | 30 | by Jan 1993 – Sep 1997 |
| Malone Unit G-2-232903 | Enco Exploration Company | Norbee, S (Pettus) | 1 | 5.54K | 227K | Jan 2008 – May 2010 |
| Npu (Ray -7 ) G-2-33901 | Paleo Oil Company LLC | Tulsita-Wilcox (MWC) | 1 | 5.53K | 904K | by Jan 1993 – Dec 2006 |
| Dahl, A. F. O-2-3389 | Mission River Systems, Inc. | Caesar, South (Slick) | 1 | 5.51K | 34 | by Jan 1993 – Dec 2006 |
| Eberstadt G-2-255700 | Britanco, L.L.C. | Caesar, South (Wilcox 9770) | 1 | 5.45K | 412K | Feb 2010 – Aug 2026 |
| Riggle G-2-279636 | Paleo Oil Company LLC | Yougeen (5500) | 1 | 5.44K | 112K | Apr 2014 – Jul 2023 |
| Wolters G-2-239192 | Chisholm Oil & Gas, LC | Sliva, Southwest (Stillwell) | 1 | 5.42K | 56.6K | Jun 2008 – Apr 2009 |
| Long O-2-9444 | Enco Exploration Company | Beeville, SW. (Hockley) | 1 | 5.42K | 3.53K | Jul 2010 – Jul 2016 |
| Walton G-2-263092 | Sydson Energy, Inc. | Ray (Vicksburg-Hockley) | 1 | 5.41K | 55.7K | Mar 2011 – Mar 2020 |
| Barrow, Laura T. G-2-58175 | Durango Resources Corp. | Laura Thomson, S. (5200) | 1 | 5.26K | 416K | by Jan 1993 – Apr 2012 |
| Chandler G-2-220897 | Hughes, Dan A. Company, L.P. | Caesar, South (9600) | 1 | 5.26K | 662K | May 2006 – Nov 2010 |
| Perez, Porfirio -A- O-2-1551 | Staples, James W. Prod. Co. | Tuleta | 3 | 5.23K | 780 | by Jan 1993 – Aug 2026 |
| Ashland et Al G-2-157892 | Rincon Petroleum Corporation | Caesar, South (Massive) | 1 | 5.18K | 192K | Mar 1996 – Nov 2000 |
| Long G-2-171712 | Enco Exploration Company | Fred Long (Slick) | 1 | 5.17K | 841K | Sep 1998 – Sep 2006 |
| Malone, Rissa M. O-2-6651 | Ridgeling Well Salvage | Malone Ranch (Hockley, Up.) | 1 | 5.12K | 76 | by Jan 1993 – Sep 1999 |
| Holzmark O-2-8166 | Cummins & Walker Oil Co., Inc. | Holzmark (Luling) | 1 | 5.11K | 1.03K | Mar 1996 – Feb 1998 |
| Spindletop G-2-220065 | Spindletop Oil & Gas Company | Normanna (Consolidated) | 1 | 5.09K | 275K | Feb 2006 – Sep 2015 |
| Borroum, L. B. O-2-3718 | Staples, James W. Prod. Co. | Caesar | 1 | 5.07K | 4.24K | by Jan 1993 – Jun 1996 |
| Holzmark O-2-12037 | Nog Production & Operating LLC | Holzmark, E. (Slick) | 1 | 4.99K | 0 | Sep 2018 – Jul 2021 |
| Welder, R. J. "A" G-2-207644 | Welder Exploration & Prod., Inc. | Poesta Creek (Stilwell) | 1 | 4.96K | 873K | Oct 2004 – Jul 2012 |
| Slick, Tom O-2-3387 | Oztx Oil & Gas, L.L.C. | Caesar, South (Luling) | 2 | 4.9K | 12 | by Jan 1993 – May 2008 |
| McCarn B G-2-299764 | Warwick-Artemis, LLC | Sugarkane (Eagle Ford) | 1 | 4.89K | 1.42M | Jun 2025 – Aug 2026 |
| Shirley O-2-12652 | Dahco Operating, LLC | Mineral, East (Hockley) | 1 | 4.86K | 10.1K | Jul 2023 – Aug 2026 |
| Tulsita-Ray O-2-10965 | Sydson Energy, Inc. | Ray (Vicksburg-Hockley) | 2 | 4.86K | 0 | May 2014 – Jun 2019 |
| Healey, Judith M. Etal O-2-6360 | Hughes, Dan A. Company | Healey (4720) | 1 | 4.8K | 10.2K | by Jan 1993 – Dec 1996 |
| Dirks-McKenzie O-2-5874 | Stark Petroleum | Dirks | 1 | 4.79K | 2.15K | by Jan 1993 – Nov 1997 |
| Long G-2-183653 | Enco Exploration Company | Singleton (Hockley 3800) | 1 | 4.76K | 273K | Mar 2001 – Apr 2005 |
| Wtu Robinson G-2-80413 | West Tuleta Operating Corp. | Tuleta, West (8966) | 1 | 4.6K | 359K | May 1993 – Apr 2002 |
| Hughes G-2-266060 | Rincon Petroleum Corporation | Ray (Vicksburg-Hockley) | 1 | 4.54K | 51.1K | Dec 2011 – May 2014 |
| Murphy, Willie O-2-4651 | Fields Exploration, Inc. | Papalote, E. (3200 Stringer) | 1 | 4.52K | 68 | by Jan 1993 – Jan 2005 |
| Collier O-2-9085 | Enco Exploration Company | Norbee, S.E. (4230) | 1 | 4.48K | 6.38K | May 2006 – May 2009 |
| Smith Gill Unit G-2-250401 | Kebo Oil & Gas, Inc. | Singleton, E. (Wilson) | 1 | 4.45K | 49K | Jul 2009 – Mar 2015 |