| White, J. T. G-3-141772 | Denbury Onshore, LLC | Elwood (Vicksburg) | 1 | 69.5K | 4.42M | by Jan 1993 – Apr 2005 |
| Broussard Trust O-3-1526 | Papco, Inc. | Fig Ridge | 3 | 68.5K | 29.6K | May 1993 – Apr 2026 |
| Hepler, C. O-3-24033 | Sawtooth Operating Co., Inc. | Stowell (Englin-Marg) | 1 | 68.3K | 6K | Aug 2001 – Apr 2022 |
| RFR Frio 15 GU O-3-23981 | Galveston Bay Operating Co LLC | Red Fish Reef S. (Frio 15) | 2 | 68.2K | 435K | Mar 2001 – Jul 2018 |
| Acom, O. H. Estate Gas Unit G-3-168986 | Fieldwood Onshore LLC | Seabreeze, N. (Nodosaria 1-A) | 1 | 66.5K | 3.7M | Apr 1998 – Jun 2012 |
| State Tract 5-8A O-3-25153 | Galveston Bay Operating Co LLC | Fishers Reef (FB C 9800) | 1 | 65.9K | 279K | Aug 2006 – Jun 2021 |
| Clement Unit St O-3-24738 | Aspect Energy, LLC | Spruce (10900) | 1 | 65K | 278K | Mar 2005 – Aug 2006 |
| Hankamer, I. J., Etal -A- O-3-1880 | Home Petroleum Corp. | Hankamer, South | 1 | 64.9K | 13.3K | by Jan 1993 – Aug 2026 |
| Syphrett Heirs G-3-164298 | New Century Exploration, Inc. | Anahuac, E. (F-16) | 1 | 64.8K | 6.94M | Jul 1997 – Dec 2004 |
| Anahuac Main Frio Oil Unit O-3-20022 | Rising Star Energy Partners II, | Anahuac | 1 | 64.2K | 47.4K | Sep 2010 – Feb 2025 |
| Winfree, O. K. O-3-200 | Lone Star NGL Mont Belvieu LP | Barbers Hill | 2 | 64.1K | 14.8K | by Jan 1993 – May 2004 |
| White, J. T. -C- G-3-88555 | Kerr-McGee Oil & Gas Onshore LLC | Elwood (Vicksburg) | 1 | 63.7K | 1.69M | by Jan 1993 – Oct 2002 |
| Engels, M. H. O-3-75 | Rising Star Energy Partners II, | Anahuac | 8 | 63.7K | 345K | by Jan 1993 – May 2013 |
| O.H. Acom Estate Gas Unit G-3-165744 | Transtexas Gas Corporation | Seabreeze, N. (Nodosaria 1-A) | 1 | 62.9K | 3.6M | Oct 1997 – Jan 2001 |
| Beach House G-3-199614 | Carrizo Oil & Gas, Inc. | Hematite Sand (Vicksburg) | 1 | 61.6K | 1.34M | Jan 2004 – Feb 2006 |
| Mabry O-3-17252 | Trans-Pecos Resources, Inc. | Barbers Hill (Yegua 10,300, S.) | 1 | 61.5K | 10.7K | by Jan 1993 – Dec 2012 |
| Baten-Taylor Unit O-3-18103 | Samson Exploration, LLC | Angelina, N. (Frio 10969) | 1 | 61.2K | 30.8K | by Jan 1993 – Jul 2014 |
| Casey, Troy O-3-19840 | Rotation, Incorporated | Petkas (Frio 7650) | 1 | 60.1K | 28.6K | by Jan 1993 – Dec 2006 |
| Weaver O-3-26925 | Gaither Petroleum Corporation | Hankamer | 1 | 58.7K | 56.8K | May 2015 – Jun 2023 |
| Jackson, Pearl Estate O-3-24322 | Minexprod LLC | Whites Bayou (F-15) | 1 | 58.5K | 46.7K | Dec 2002 – Oct 2020 |
| Hankamer, E. C. O-3-10641 | Gcows Operating LLC | Stowell (Miocene 6250) | 2 | 58.4K | 22.9K | Jun 1996 – Aug 2024 |
| State Tract 65 G-3-167739 | Vintage Petroleum, Inc. | White Heron, N. (Price Sd.) | 1 | 57.1K | 1.76M | Jan 1998 – Aug 1998 |
| Daugherty Unit O-3-26196 | Prime Operating Company | Winnie, N. (FB-a, Intmd. Sd.) | 1 | 55.8K | 82K | Sep 2012 – Aug 2022 |
| Moody Foundation G-3-260387 | Abaco Operating, LLC | Mayes, South (Frio 19) | 1 | 55.7K | 95.3K | Nov 2010 – Aug 2018 |
| Crawford "A" G-3-166725 | EOG Resources, Inc. | Angelina (11,800) | 1 | 55.6K | 2.23M | Aug 1997 – Mar 2000 |
| Broussard-Hebert a/C #1 O-3-17511 | Rising Star Energy Partners II, | Anahuac (FB a-2, S. Frio 13) | 2 | 54.5K | 67.8K | Aug 2005 – Jan 2012 |
| Umc O-3-28045 | Kingwood Exploration LLC | Double Bayou, S. (F-17) | 1 | 53.6K | 10.3K | Dec 2022 – Aug 2026 |
| State Tract 65 G-3-200877 | Davis Petroleum Corp. | Umbrella Point (F-28) | 1 | 52.7K | 4.59M | Jan 2004 – Oct 2009 |
| Barrow Ranch G-3-204043 | Kerr-McGee Oil & Gas Onshore LP | Barrow Ranch (Hack A) | 1 | 52K | 1.64M | Aug 2004 – Aug 2005 |
| State Tract 100 Unit G-3-209009 | Davis Petroleum Corp. | Umbrella Point (F-28) | 1 | 51.6K | 5.23M | Feb 2005 – Oct 2007 |
| Brown, et Al G-3-177924 | Caskids Operating Company | Anahuac, SE. (Hackberry 9800) | 1 | 51.5K | 1.11M | Apr 2000 – Dec 2002 |
| Hankamer, E. C. O-3-23571 | Puls Operating Company | Stowell (Miocene 6645) | 1 | 51.5K | 17.7K | Sep 1998 – Jan 2016 |
| Hankamer, I J et Al O-3-1879 | Home Petroleum Corp. | Hankamer, South | 1 | 51K | 7.45K | Feb 1993 – Aug 2026 |
| State Tract 288 G-3-148811 | Shoreham Oil & Gas Company, Inc. | Red Fish Reef, SW. (Vicksburg) | 1 | 50.5K | 3.16M | Jul 1993 – Jan 2005 |
| Leavens O-3-26998 | Forza Operating, LLC | Barbers Hill (Yegua 10,300) | 1 | 50.1K | 0 | Dec 2015 – Oct 2025 |
| State Tract 126 A O-3-26624 | Linc Gulf Coast Petroleum, Inc. | Atkinson Island (Cons.) | 3 | 49.9K | 19.5K | Apr 2014 – Sep 2015 |
| Usx Hematite Unit #1 G-3-180387 | Carrizo Oil & Gas, Inc. | Hematite Sand (Vicksburg) | 1 | 48.8K | 830K | Sep 2000 – Jul 2003 |
| Fitzgerald O-3-19656 | Sandpoint Texas LLC | Barbers Hill | 2 | 48.7K | 10 | by Jan 1993 – Nov 2012 |
| Oxley et al Unit O-3-23915 | Jay Management Company, LLC | Stowell (Crawford U-1) | 1 | 48.5K | 60.9K | Nov 2000 – Aug 2026 |
| Wallis, Wendell G-3-172764 | Rutherford Oil Corporation | Mayes, South (Frio 10) | 1 | 48.1K | 2.06M | Jan 1999 – Apr 2004 |
| Castro Gas Unit #2 O-3-26941 | S & S Operating Company, Inc. | Double Bayou, S. (F-15B) | 1 | 47.8K | 0 | Jun 2012 – Aug 2026 |
| State Tract 246 G-3-206282 | Galveston Bay Operating Co LLC | Red Fish Reef (FB B-3, Frio 19) | 1 | 47.4K | 945K | Dec 2004 – Jun 2021 |
| State Tract 251 Unit O-3-23869 | Davis Petroleum Corp. | Vinceburg (Box Lox) | 1 | 46.8K | 207K | Jun 2000 – Nov 2000 |
| McCarthy Family Trust 97 O-3-25825 | C & E Operating, Inc. | Seabreeze (Pierce) | 1 | 46.6K | 183K | Sep 2011 – Aug 2018 |
| Hankamer, E.C. O-3-9815 | S & S Operating Company, Inc. | Stowell (Discorbis) | 1 | 46.1K | 2.52K | Apr 1996 – Aug 2026 |
| Wasson et al Unit O-3-16070 | Shoco Production LLC | Stowell (Crawford U-1) | 1 | 45.8K | 102K | by Jan 1993 – Jun 2013 |
| State Tract 6-7A G-3-168885 | Galveston Bay Operating Co LLC | Perelandra (Frio 15) | 1 | 45.6K | 4.57M | Apr 1998 – Jun 2021 |
| State Tract 98 G-3-167542 | Newfield Exploration Company | Umbrella Point, W. (Lox B) | 1 | 45.4K | 7.12M | Sep 1997 – Mar 2003 |
| Tytex O-3-23032 | Rutherford Oil Corporation | Willow Slough,n.(nodosaria 9500) | 1 | 44.4K | 52.7K | Jul 1996 – Dec 1998 |
| White Heirs O-3-24105 | Minexprod LLC | Whites Bayou (F-15-D) | 1 | 44K | 43.2K | Nov 2001 – Jul 2026 |