| State Tract 904 Gas Unit O-4-13087 | TR Offshore, LLC only | G.O.M. St 904 (MT2 FB-B) | Nueces | 1 | 795K | 1.9M | May 2002 – Jul 2026 |
| Reynolds Gas Unit 2 O-2-10222 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 3 | 754K | 2.6M | Feb 2012 – Jul 2026 |
| Reynolds Gas Unit 1 O-2-10097 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 8 | 539K | 1.35M | Feb 2012 – Sep 2015 |
| Reynolds Gas Unit 3 O-2-10399 | Marathon Oil EF LLC only | Eagleville (Eagle Ford-2) | Karnes | 4 | 495K | 1.47M | Oct 2012 – Jun 2021 |
| C. E. Franks Gas Unit O-3-24409 | Hilcorp Energy Company only | Franks (Banfield) | Galveston | 1 | 419K | 1.57M | Aug 2003 – Jul 2026 |
| Reynolds Gas Unit 1 O-2-10950 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 8 | 415K | 1.43M | Apr 2013 – Jul 2026 |
| Black Stone Gas Unit O-3-24395 | S & S Operating Company, Inc. only | Sour Lake, E. (Price) | Hardin | 1 | 400K | 268K | May 2003 – Jul 2026 |
| State Gas Unit -B- O-10-26055 | Jetta Operating Company, Inc. only | Caprito (Delaware Middle) | Ward | 8 | 388K | 2.74M | Jan 1993 – Jul 2026 |
| Mercury Gas Unit O-3-23811 | Cobra Oil & Gas Corporation only | Gemini (Vicksburg) | Fort Bend | 1 | 298K | 650K | Nov 1999 – Jul 2026 |
| Young Gas Unit 1 O-2-11692 | Repsol Oil & Gas USA, LLC only | Sugarkane (Austin Chalk) | Karnes | 2 | 287K | 900K | Nov 2018 – Jul 2026 |
| Browder-State AU-1 Gas Unit O-3-24666 | Roy Jackson Energy Operating, LL only | Smithers Lake (Yegua LWR AU) | Fort Bend | 2 | 280K | 1.56M | Aug 2004 – Jul 2026 |
| Sarita Field Oil & Gas Unit O-4-10263 | Exxon Mobil Corporation only | Sarita (5-Q, SW) | Kenedy | 3 | 266K | 122K | Jan 1993 – Oct 2010 |
| Sarita Field Oil & Gas Unit O-4-9310 | Exxon Mobil Corporation only | Sarita (6-B) | Kenedy | 8 | 248K | 119K | Jan 1993 – Dec 2010 |
| Gemini Gas Unit O-3-23756 | Cobra Oil & Gas Corporation only | Gemini (Vicksburg) | Fort Bend | 1 | 242K | 1.78M | Sep 1999 – Feb 2011 |
| Noll Sand Gas Unit O-4-13363 | Millennium Exploration Co. LLC only | Flowella (Frio 7900) | Brooks | 1 | 215K | 370K | Jan 2004 – Jul 2026 |
| Sarita Field Oil & Gas Unit O-4-11471 | Exxon Mobil Corporation only | Sarita (5-C, SW) | Kenedy | 1 | 194K | 69K | Jan 1993 – Oct 2010 |
| Tomball Gas Unit #18 O-3-23647 | Galloway Lone Star, L.L.C. only | Tomball (Kobs) | Harris | 1 | 190K | 611K | Mar 1999 – Jul 2026 |
| Galloway Gas Unit I O-3-24899 | Cimarex Energy Co. only | Moss Bluff, North | Liberty | 1 | 186K | 1.72M | Jul 2006 – Mar 2008 |
| B.B. Rogers Gas Unit 1 O-3-22499 | Magnum Producing, LP only | Whites Bayou (F-16) | Chambers | 3 | 184K | 187K | Sep 1994 – Jun 2022 |
| North Goldsmith Gas Unit No. 2 O-10-36572 | R3 Operating Corporation only | Goldsmith, N. (San Andres, Con.) | Ector | 7 | 171K | 1.74M | Mar 2001 – Jul 2026 |
| Sampson-Clark Gas Unit O-3-21651 | Hilcorp Energy Company only | Vidor Ames (Hartburg) | Orange | 1 | 167K | 514K | Jan 1993 – Jul 2026 |
| Sarita Field Oil & Gas Unit O-4-13623 | Headington Energy Partners, LLC only | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 43 | 158K | 262K | Sep 2010 – Jul 2026 |
| Sanders Gas Unit O-3-14938 | Onpoint Operating LLC only | Shepherd (7682) | San Jacinto | 3 | 158K | 68K | Jan 1993 – Jul 2026 |
| State Tract 904 Gas Unit O-4-13079 | TR Offshore, LLC only | G.O.M. St 904 (MT-2) | Mustang IS-SB | 1 | 154K | 849K | Jan 2002 – Jul 2026 |
| Mixson Gas Unit O-3-20591 | MBX Operating LLC only | Buna (Wilcox 11,100) | — | 1 | 154K | 1.57M | Jan 1993 – Jul 2026 |
| W. A. Adams Gas Unit O-3-25424 | Trailblazer Energy Resources,llc only | Fort Trinidad, East (Buda) | Houston | 1 | 151K | 284K | Dec 2008 – Jul 2026 |
| Sarita Field Oil & Gas Unit O-4-6965 | Exxon Mobil Corporation only | Sarita ( 5-KLM, C) | Kenedy | 12 | 138K | 144K | Jan 1993 – Oct 2010 |
| Payne Ranch Gas Unit O-14-8094 | BE Anadarko II, LLC only | RFC (Morrow, Upper) | Roberts | 1 | 134K | 1.54M | Apr 2007 – Jul 2026 |
| Kellner et al Gas Unit O-1-13883 | Newfield Exploration Company only | Fashing (Edwards Lime -A-) | Atascosa | 1 | 127K | 224K | Jul 1994 – Dec 2013 |
| Sarita Field, Oil & Gas Unit O-4-10436 | Exxon Mobil Corporation only | Sarita ( 6-A) | Kenedy | 3 | 122K | 55.9K | Jan 1993 – Oct 2010 |
| Hansford Gas Unit 30 O-14-7985 | Complete Oil & Gas Services, LLC only | Alpar (Hunton) | Hansford | 3 | 114K | 11.8K | Sep 2008 – Jul 2026 |
| Manning Gas Unit O-3-26155 | EOG Resources, Inc. only | Fort Trinidad, East (Buda) | Madison | 1 | 112K | 626K | Dec 2012 – Jul 2026 |
| Donner Gas Unit O-3-25236 | Forza Operating, LLC only | Doty, E. (Nodosaria 7930) | Orange | 1 | 110K | 191K | Jul 2008 – Jul 2026 |
| Sarita Field Oil & Gas Unit O-4-11617 | Exxon Mobil Corporation only | Sarita ( 5-P) | Kenedy | 6 | 108K | 118K | Jan 1993 – Oct 2010 |
| Doyle Gas Unit O-3-20381 | Wagner Oil Company only | Constitution (13600) | Jefferson | 1 | 105K | 144K | Jan 1993 – Jul 2026 |
| Copano Gas Unit O-2-7946 | T - C Oil Company only | Tom Oconnor (5250) | Refugio | 3 | 94.7K | 231K | Feb 1994 – Jan 2007 |
| Edwards F. Gas Unit O-14-6799 | Bracken Operating, L.L.C. only | Farnsworth-Conner (Des Moines) | Ochiltree | 1 | 90.5K | 349K | Jan 1993 – Jul 2026 |
| West Ranch-State Oil & Gas Unit O-2-7314 | Hilcorp Energy Company only | West Ranch, S. (Greta) | Jackson | 5 | 89.7K | 150K | Jan 1993 – Jul 2026 |
| West Ranch State Oil & Gas UNIT1 O-2-9500 | Hilcorp Energy Company only | West Ranch, S. (Frio 8200) | Jackson | 2 | 87.7K | 466K | Aug 2010 – Sep 2020 |
| Sarita Field Oil & Gas Unit O-4-11702 | Exxon Mobil Corporation only | Sarita (6-D) | Kenedy | 4 | 81.8K | 43.4K | Jan 1993 – Oct 2010 |
| Sarita FLD Oil & Gas Unit O-4-10815 | Exxon Mobil Corporation only | Sarita (6-C) | Kenedy | 3 | 79.9K | 174K | Jan 1993 – Dec 2010 |
| Sarita Field Oil & Gas Unit O-4-6091 | Exxon Mobil Corporation only | Sarita ( 9-B) | Kenedy | 2 | 75.3K | 70.9K | Jan 1993 – Oct 2010 |
| Gueera Gas Unit O-4-13522 | Dewbre Petroleum Corporation only | Arrowhead (Alh Sand) | Hidalgo | 1 | 70.8K | 0 | Sep 2008 – Jul 2026 |
| Vincent Gas Unit One O-6-13238 | Shelby Operating Company only | Waskom | Harrison | 1 | 60.7K | 601K | May 1993 – Jul 2026 |
| Varga Gas Unit No. 2 O-6-11538 | Buffco Production Inc. only | Willow Springs, SE (Travis Peak) | Gregg | 1 | 60.1K | 475K | Jan 1993 – Jul 2026 |
| Bevly "B"gas Unit O-4-12935 | Anderson Oil Ltd. only | Baldwin (7400) | Nueces | 1 | 55.3K | 227K | Mar 2000 – Jul 2026 |
| Pruett, T.B. et al Gas Unit O-10-29295 | OXY USA Inc. only | Vermejo, E. (Wolfcamp) | Ward | 2 | 52.2K | 28.6K | Jan 1993 – Aug 2012 |
| Worsham Gas Unit NO.1 O-10-29454 | Caird Operating, LLC only | Worsham (Delaware Sand) | — | 1 | 50.1K | 549K | Jan 1993 – Jul 2026 |
| Sheridan Gas Unit O-3-25225 | Remora Management, LLC only | Sheridan (Wilcox Consolidated) | Colorado | 3 | 50.1K | 18.4K | Sep 2008 – Jul 2026 |
| Ruth Marshall, et al Gas Unit O-3-23959 | Chaparral Energy, L.L.C. only | San Leon (F-19) | Galveston | 1 | 50K | 91K | Mar 2001 – Dec 2011 |