| AM Easterling-Gresham A(alloc) O-3-26523 | Trailblazer Energy Resources,llc only | Halliday (Woodbine) | Leon | 1 | 492K | 930K | Aug 2012 – Apr 2026 |
| Gresham O-3-25809 | Trailblazer Energy Resources,llc only | Halliday (Woodbine) | Leon | 3 | 330K | 700K | Oct 2011 – Apr 2026 |
| Gresham A O-3-25853 | Thomfield Energy LLC only | Halliday (Woodbine) | Leon | 1 | 285K | 328K | Feb 2012 – Apr 2026 |
| John Gresham Unit O-3-25901 | Comstock Oil & Gas, LLC only | Halliday (Woodbine) | Leon | 2 | 246K | 80K | Apr 2012 – Apr 2026 |
| Gresham Gas Unit G-3-265865 | Charolais Energy, LLC only | Trull (8900) | Matagorda | 1 | 235K | 1.33M | Aug 2011 – Feb 2026 |
| Keeling-Gresham (Allocation) O-3-26546 | Trailblazer Energy Resources,llc only | Halliday (Woodbine) | Leon | 2 | 178K | 165K | May 2013 – Apr 2026 |
| Gresham Trust O-3-25729 | Comstock Oil & Gas, LLC only | Halliday (Woodbine) | Leon | 2 | 89.5K | 24.1K | Nov 2011 – Apr 2026 |
| Gilbert Gresham O-3-26022 | Deguello Operating LLC only | Halliday (Woodbine) | Leon | 1 | 89.5K | 142K | Jul 2012 – Dec 2023 |
| Gresham B O-3-26351 | Thomfield Energy LLC only | Halliday (Woodbine) | Leon | 1 | 88K | 154K | Apr 2013 – Apr 2026 |
| Gresham, Curtis G-6-264502 | Buffco Production Inc. only | Bufkin (Pettit) | Cherokee | 1 | 59.3K | 5.31M | Oct 2011 – Apr 2026 |
| Gresham O-11-65705 | Beach Exploration, Inc. only | Tex-Hamon (Dean) | Dawson | 1 | 58.7K | 141K | Jan 1993 – Apr 2026 |
| Gresham "39" O-10-45313 | Petroplex Energy Inc. only | Spraberry (Trend Area) | Martin | 1 | 46.5K | 35.4K | Apr 2012 – Apr 2026 |
| Pratka G-3-269494 | CML Exploration, LLC only | Gresham (9700) | Wharton | 1 | 39.4K | 1.05M | Feb 2013 – Apr 2026 |
| Reed Unit G-3-281087 | Transpacific Energy, LLC only | Gresham (9700) | Wharton | 1 | 38.1K | 841K | Oct 2015 – Apr 2026 |
| Massie, R. H. O-13-3696 | Quest Petroleum Company only | Gresham, E. (Strawn, Upper) | Jack | 6 | 32.9K | 73 | Jan 1993 – Apr 2022 |
| Tom Carpenter Oil Unit "A" O-13-29331 | Jay Management Company, LLC only | Gresham, E. (Miss.) | Jack | 2 | 32.5K | 50.6K | Mar 1997 – Mar 2019 |
| Ames O-13-25188 | Winfield Operating Company only | Gresham (Strawn) | Jack | 2 | 31.8K | 21 | Jan 1993 – Apr 2026 |
| Gresham-Davis O-13-27026 | S.B. Street Operating, Inc. only | Lester | Jack | 2 | 29.3K | 38.2K | Jan 1993 – Oct 2022 |
| Hamman B O-13-34054 | Oakridge Oil and Gas, LP only | Gresham, E. (Miss.) | Jack | 1 | 23.9K | 20.9K | Aug 2021 – Apr 2026 |
| Pursley, John O-13-28096 | D L Operating only | Gresham (Strawn) | Jack | 1 | 16.9K | 82.1K | Jan 1993 – Apr 2026 |
| Gresham, Curtis G-6-254568 | Buffco Production Inc. only | Bufkin (Pettit) | Cherokee | 1 | 15.2K | 1.57M | Sep 2009 – Feb 2022 |
| Gresham Unit O-11-67824 | Rogers, S. K. Oil, Inc. only | October (Canyon) | Hockley | 1 | 14.4K | 70 | Nov 1997 – Dec 1998 |
| GWF Unit O-6-12505 | Scheriger Production only | Gresham (Rodessa, Lower) | Smith | 4 | 13.6K | 27K | Jan 1993 – Dec 1994 |
| Gresham & Sons B-1 O-5-2097 | Amerril Energy LLC only | Pleasant Ridge (Woodbine) | Leon | 1 | 12.6K | 1.85K | Jan 1993 – Dec 2014 |
| Betty Mae Unit G-3-281707 | Transpacific Energy, LLC only | Gresham (9700) | Wharton | 1 | 11.6K | 371K | Mar 2016 – Apr 2026 |
| Hamman B O-13-34403 | Oakridge Oil and Gas, LP only | Gresham, E. (Strawn, Upper) | Jack | 2 | 10.6K | 0 | May 2025 – Apr 2026 |
| Campbell, Alton O-6-13529 | Upstream Properties, LLC only | Gresham (Paluxy) | Smith | 1 | 8.61K | 0 | May 1996 – Apr 2003 |
| Hancock G-3-263341 | Alta Mesa Services, LP only | Gresham (9700) | Wharton | 1 | 7.89K | 207K | Mar 2011 – Aug 2012 |
| Smith, M. L., -B- O-13-3701 | Cholla Petroleum, Inc. only | Gresham (Strawn) | Jack | 2 | 7.49K | 19 | Jan 1993 – Jul 2003 |
| Stovall-Payne G-3-202082 | Cox & Perkins Exploration, Inc. only | Gresham (8400) | Wharton | 1 | 6.6K | 941K | May 2004 – Oct 2010 |
| Stovall-Payne G-3-190147 | Cox & Perkins Exploration, Inc. only | Gresham (9700) | Wharton | 1 | 6.54K | 993K | Jul 2002 – Apr 2004 |
| Ncoc Gresham O-5-2218 | Amerril Energy LLC only | Pleasant Ridge (Woodbine) | Leon | 1 | 5.6K | 417 | Jan 1993 – Oct 2014 |
| Reed Unit G-3-280802 | Transpacific Energy, LLC only | Gresham (9700) | Wharton | 1 | 4.93K | 332K | Oct 2015 – Apr 2026 |
| Betty Mae Unit G-3-281654 | Transpacific Energy, LLC only | Gresham (9700) | Wharton | 1 | 4.84K | 250K | May 2016 – Apr 2026 |
| Gresham & Sons O-5-1705 | Amerril Energy LLC only | Pleasant Ridge (Woodbine) | Leon | 1 | 4.76K | 440 | Jan 1993 – Mar 2010 |
| Reed, Cleo B. et Al G-3-150269 | Hughes, Dan A. Company only | Gresham (9700) | Wharton | 1 | 4.25K | 115K | Jun 1994 – Jul 1997 |
| Gresham O-11-61534 | Willey, E. J. only | Tex-Hamon (Dean) | Dawson | 1 | 4.01K | 5.07K | Jan 1993 – Oct 1994 |
| Gresham Gas Unit G-2-272687 | Charolais Energy, LLC only | Francitas (Frio 8600) | Matagorda | 1 | 2.34K | 414K | Sep 2012 – Jul 2024 |
| Hughey-Gresham No. 1 G-5-133344 | Basa Resources, Inc. only | Alabama Ferry (Glenrose D, West) | Leon | 1 | 2.27K | 45.7K | Jan 1993 – Sep 2005 |
| Stovall-Payne G-3-192273 | Cox & Perkins Exploration, Inc. only | Gresham (9700) | Wharton | 1 | 2.16K | 685K | Nov 2002 – Apr 2010 |
| Srubar G-3-238412 | Magnum Producing, LP only | Gresham (8400) | Wharton | 1 | 1.08K | 137K | May 2008 – Jan 2010 |
| Gresham 1 O-3-27884 | Thomfield Energy LLC only | Halliday (Woodbine) | Leon | 1 | 972 | 0 | Mar 2022 – Apr 2026 |
| Gresham -A- G-3-129527 | Lemon, Richard G. only | Trull (Nodosaria 5) | Matagorda | 1 | 949 | 142K | Jan 1993 – Aug 1997 |
| Reed Unit G-3-126373 | Hughes, Dan A. Company only | Gresham (7900) | Wharton | 1 | 746 | 42.7K | Jan 1993 – Apr 1994 |
| Leslie G-3-231679 | Ventum Oil and Gas, LP only | Gresham (8400) | Wharton | 1 | 627 | 92.9K | Sep 2006 – Apr 2007 |
| Wilson, Clifford O-8-27307 | Gresham Oil & Gas (USA) Inc. only | Nolan County Regular | Nolan | 1 | 385 | 2 | Oct 1994 – Nov 1994 |
| University Lands O-9-13776 | Gresham Oil & Gas (USA) Inc. only | University (Penn. Strawn) | Upton | 1 | 335 | 4 | Sep 1994 – Dec 1994 |
| Gresham Trust Unit A G-5-263137 | Comstock Oil & Gas, LLC only | Hayden Lake (Bossier) | Leon | 1 | 271 | 4.52M | May 2011 – Apr 2026 |
| Gresham A O-3-26685 | Maverick Prod. Co., Inc. only | Blue Ridge | Fort Bend | 1 | 163 | 0 | Feb 2015 – Jul 2015 |
| Gresham Trust G-5-260659 | Comstock Oil & Gas, LLC only | Hayden Lake (Bossier) | Leon | 1 | 93 | 715K | Jun 2010 – Apr 2026 |