| Collins, Claude Jr. Estate -B- O-10-32214 | Ladd Oil & Gas Corporation only | China Draw (Canyon) | Sterling | 1 | 4.63K | 40 | May 1995 – Oct 2006 |
| Stiegler, Harold O-1-8445 | S.O.C. Investors, Inc. only | Taylor-Ina | Medina | 37 | 4.62K | 79 | by Jan 1993 – Mar 2002 |
| Brainard -B- G-14-208745 | Mewbourne Oil Company only | Hansford (Morrow, Lower) | Hutchinson | 1 | 4.62K | 1.43M | Mar 2005 – Aug 2026 |
| Ica Evan Brunson 37 O-10-39611 | Propel Energy, LLC only | Pinal Dome (Cherry Canyon) | Loving | 1 | 4.61K | 8.29K | Sep 2009 – Sep 2012 |
| Catalina O-8-27705 | First American Operating Co. only | Stephens County Regular | Stephens | 1 | 4.6K | 9.13K | Oct 1995 – Apr 2002 |
| Slaughter Estate "K" O-11-64905 | Finaly Resources LLC only | Levelland | Cochran | 1 | 4.58K | 9.04K | by Jan 1993 – Apr 1998 |
| Wiesehan-Walker Gas Unit G-4-92059 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 4.55K | 2.42M | by Jan 1993 – Aug 2026 |
| Boston Texas Land & Trust G-4-127829 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 4.55K | 733K | Oct 1994 – May 2019 |
| West Ranch -A- G-2-214458 | Hilcorp Energy Company only | West Ranch (Marginulina 5000) | Jackson | 1 | 4.54K | 31.8K | Jul 2005 – May 2007 |
| Gates Ranch G-1-77562 | Lewis Petro Properties, Inc. only | Catarina, SW. (San Miguel-Gas) | Webb | 1 | 4.49K | 571K | by Jan 1993 – Jul 2024 |
| State Tract 169 O-4-12867 | Totalfinaelf E&P USA Inc only | Bird Island (10-B) | Kleberg | 1 | 4.46K | 32.8K | Sep 1999 – Oct 2000 |
| Kangerga, Michael Gas Unit G-6-77203 | Luminant Mining Company LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 4.44K | 771K | by Jan 1993 – May 2015 |
| University 3 A O-10-25523 | Aaa Oil Trust only | Cardinal (Queen, W. ) | Pecos | 2 | 4.44K | 30.9K | by Jan 1993 – Nov 2009 |
| Fina-Conoco Fee G-4-138642 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 4.41K | 179K | by Jan 1993 – Jul 2006 |
| J. N. Wilson K O-1-17377 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 2 | 4.41K | 0 | Nov 2013 – Aug 2026 |
| Encina-Coleman O-1-12864 | Claron Corporation only | Pearsall (Austin Chalk) | Frio | 1 | 4.39K | 25 | by Jan 1993 – Dec 1995 |
| Biry, Frank -A- O-1-6585 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 4 | 4.37K | 0 | Jul 1996 – Aug 2026 |
| Petty Ranch G-1-184778 | White Oak Operating Company LLC only | Catarina, SW. (San Miguel-Gas) | Webb | 1 | 4.36K | 167K | Jun 2001 – Dec 2015 |
| Pharr Fieldwide Unit G-4-173403 | Totalfinaelf E&P USA Inc only | Pharr (8500) | Hidalgo | 1 | 4.33K | 254K | Jun 1999 – Jun 2001 |
| Riethmeyer,e. Gas Unit G-4-237386 | STX Operating Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 4.33K | 757K | Mar 2008 – Aug 2026 |
| Salinas, M. Gas Unit G-4-77660 | El Paso E & P Company, L. P. only | Jeffress, E. (Vicksburg T) | Hidalgo | 1 | 4.31K | 157K | by Jan 1993 – Jan 1998 |
| Hudgins, T. J. O-2-8285 | Express Oil Co. only | Sandy Creek (Marginulina) | Jackson | 1 | 4.31K | 540 | Jun 1997 – Aug 2001 |
| Sinast, W. et Al G-2-93901 | Lytle Creek Operating, Inc. only | Henze (Slick) | De Witt | 1 | 4.3K | 313K | by Jan 1993 – Dec 2004 |
| Slick, T.B. Estate G-4-143019 | Fina Oil & Chemical Company only | Hinde (Vicksburg 21) | Starr | 1 | 4.29K | 59.8K | by Jan 1993 – Dec 1993 |
| Copeland, A.C. Unit O-1-12395 | Bodden Production only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 4.29K | 33 | by Jan 1993 – Aug 1997 |
| Fina-Conoco Fee G-4-154170 | Totalfinaelf E&P USA Inc only | Frost,north (Rincon) | Starr | 1 | 4.27K | 238K | Mar 1995 – Jan 2003 |
| -L- Ranch O-2-2971 | Miner, R. C. Oil, Inc. only | Lolita (Marginulina Zone) | Jackson | 2 | 4.24K | 71 | by Jan 1993 – May 2016 |
| Parsons, Ina Mae O-8-20523 | Sun-Key Oil Co., Inc. only | Parsons (Gray) | Callahan | 1 | 4.24K | 47.4K | by Jan 1993 – Feb 1997 |
| E. Riethmeyer Gas Unit G-4-251205 | STX Operating Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 4.23K | 794K | Sep 2008 – Aug 2026 |
| Frazier, E. O-1-3040 | Three J Energy, Inc. only | Taylor-Ina | Medina | 21 | 4.22K | 18 | by Jan 1993 – May 2025 |
| Brann, Regina G-4-176974 | Merit Energy Company only | Jeffress (Vicksburg W) | Hidalgo | 1 | 4.21K | 765K | Apr 2000 – Jul 2000 |
| Tijerina G-4-224269 | Varas Energy Operating Company, only | Tiffany (Wilcox Carrizo) | Webb | 1 | 4.21K | 537K | Oct 2006 – Aug 2025 |
| Petty, O. S. G-1-78527 | White Oak Operating Company LLC only | Catarina, SW. (San Miguel-Gas) | Webb | 1 | 4.21K | 323K | by Jan 1993 – Feb 2016 |
| Bishop G-3-212156 | Square Mile Energy, L.L.C. only | La Belle (Marginulina 8200) | Jefferson | 1 | 4.21K | 1.05M | Sep 2005 – Jun 2009 |
| Frost Bank G-4-222704 | Finaly Resources LLC only | Lopez, SE. (Consolidated) | Duval | 1 | 4.18K | 578K | Aug 2006 – Aug 2026 |
| Mc Allen Fieldwide Unit G-4-69102 | Fina Oil & Chemical Company only | McAllen (Grissom 7900) | Hidalgo | 1 | 4.17K | 267K | by Jan 1993 – Apr 1996 |
| Schmidt, O. K. O-1-4146 | Production Resources, Inc. only | Taylor-Ina | Medina | 2 | 4.16K | 29 | by Jan 1993 – Jun 2026 |
| Stoeltje O-1-15196 | Cei Operating LLC only | Marcelina Creek (Austin Chalk) | Wilson | 1 | 4.15K | 0 | Aug 2010 – Oct 2014 |
| Btlt G-4-256450 | Smith Production Inc. only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 4.11K | 325K | Jun 2010 – Aug 2014 |
| Jesuit Gas Unit G-4-246638 | Finaly Resources LLC only | Jesuit (10700) | Kleberg | 1 | 4.09K | 431K | May 2008 – Jan 2010 |
| Lanford, S. T. O-1-5142 | Park Avenue Resources, Inc. only | Taylor-Ina | Medina | 9 | 4.08K | 38 | by Jan 1993 – Mar 2010 |
| Neinast "B" O-3-17193 | Moore Petroleum Service, Inc. only | Giddings (Austin Chalk-3) | Washington | 3 | 4.06K | 26.5K | by Jan 1993 – May 1998 |
| Hierholzer'a' O-1-13813 | First Rock, Inc. only | Marcelina Creek (Buda) | Wilson | 1 | 4.06K | 476 | Nov 1993 – Nov 1999 |
| Boston Texas Land & Trust G-4-254692 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 4.04K | 357K | Jan 2010 – Sep 2021 |
| Btlt G-4-247297 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Starr | 1 | 4.04K | 296K | Feb 2009 – Aug 2026 |
| Stumberg Ranch O-1-13518 | Texokan Operating, Inc. only | Catarina Mag (Austin Chalk) | Dimmit | 1 | 4.04K | 6.77K | Nov 1993 – Jan 2016 |
| Biry, Alfred O-1-6119 | Texas Secondary Oil Corporation only | Taylor-Ina | Medina | 1 | 4.03K | 21 | by Jan 1993 – Aug 2026 |
| Petty Ranch G-1-189127 | Rosetta Resources Operating LP only | Catarina, SW. (Olmos) | Webb | 1 | 4.01K | 167K | Jun 2002 – Aug 2012 |
| Wilson, J. N. -B- O-1-2018 | Klaeger Operating Company Ii,llc only | Taylor-Ina | Medina | 3 | 3.97K | 0 | Jul 2003 – Aug 2026 |
| Carminati O-13-31254 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 4 | 3.94K | 147K | Oct 2008 – Jul 2011 |