| Freeman G-2-177964 | Fowler Oil & Gas LLC only | Speaks, SW. (Simpson) | Lavaca | 1 | 966 | 8.82M | May 2000 – Mar 2026 |
| Fowler G-13-246417 | Rosehill Operating Company, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 827 | 151K | Dec 2008 – Jan 2016 |
| Jacobs Ranch G-2-185660 | Fowler Oil & Gas LLC only | The Rapture (12700 Sand) | Lavaca | 1 | 792 | 3.66M | Aug 2001 – Aug 2015 |
| Freemen G-2-177539 | Fowler Oil & Gas LLC only | Speaks, SW. (Rainbow) | Lavaca | 1 | 754 | 9.31M | Feb 2000 – Mar 2026 |
| Fowler G-4-194297 | Mortimer Production Company only | Het (2500) | San Patricio | 1 | 744 | 50.9K | Feb 2003 – Feb 2005 |
| Migl Mitchell G-2-214568 | Fowler Oil & Gas LLC only | Speaks, SW. (Magnolia) | Lavaca | 1 | 729 | 4.42M | Sep 2005 – Aug 2023 |
| Migl-Quinn G-2-174113 | Fowler Oil & Gas LLC only | Speaks, SW. (Rainbow) | Lavaca | 1 | 671 | 10.1M | Nov 1998 – Feb 2008 |
| Fowler & Baugh O-2-56 | Fina Oil & Chemical Company only | Berclair (Vicksburg) | Goliad | 1 | 587 | 469 | Jan 1993 – Feb 1994 |
| Ploeger, Leslie G-2-178549 | Fowler Oil & Gas LLC only | Borchers Deep (Bushel) | Jackson | 1 | 527 | 9.83M | Jan 2000 – Mar 2026 |
| Kolar, Ed G-2-147706 | Fowler Oil & Gas LLC only | Vienna (8400) | Lavaca | 1 | 513 | 8.69K | Apr 1993 – Nov 1993 |
| Stamper-Fowler G-13-279767 | Oakridge Oil and Gas, LP only | JMG Mag (Miss) | Jack | 1 | 502 | 31.7K | Feb 2016 – Mar 2025 |
| Migl-Mitchell G-2-172630 | Fowler Oil & Gas LLC only | Speaks, SW. (Magnolia) | Lavaca | 1 | 496 | 8.35M | Jan 1999 – Sep 2013 |
| Stamper-Fowler G-13-279765 | Oakridge Oil and Gas, LP only | JMG Mag (Miss) | Jack | 1 | 474 | 188K | Feb 2016 – Apr 2026 |
| Stovall G-2-221466 | Fowler Oil & Gas LLC only | Crandall Rubie (Wilcox Cons.) | Lavaca | 1 | 468 | 280K | Jun 2006 – Apr 2013 |
| Fowler, Ima et Al O-1-10807 | Great Plains Resources, Inc. only | Somerset | Atascosa | 14 | 438 | 18 | Jan 1993 – Jan 1996 |
| Freeman G-2-181727 | Fowler Oil & Gas LLC only | Speaks, SW. (Simpson) | Lavaca | 1 | 417 | 4.34M | Dec 2000 – Mar 2026 |
| Stamper-Fowler G-13-237556 | Dte Gas Resources, LLC only | Newark, East (Barnett Shale) | Jack | 1 | 313 | 9.51K | Dec 2007 – Dec 2008 |
| Fowler, W. T. O-5-2553 | McDay Energy Corp. only | Mt. Calm | Hill | 1 | 299 | 18 | Jan 1993 – Aug 2015 |
| Fowler, Ima -B- O-1-6459 | Great Plains Resources, Inc. only | Somerset | Atascosa | 1 | 297 | 21 | Jan 1993 – Apr 1997 |
| Fowler, Ima 'A' O-1-6458 | Great Plains Resources, Inc. only | Somerset | Atascosa | 1 | 283 | 17 | Mar 1993 – Jan 1997 |
| W.D. Fowler G-4-280780 | Harper Hefte, Inc. only | Captain Lucey (5430) | Jim Wells | 1 | 238 | 81K | Mar 2016 – Nov 2017 |
| Stamper-Fowler G-13-286884 | Oakridge Oil and Gas, LP only | JMG Mag (Miss) | Jack | 1 | 228 | 7.08K | May 2019 – Mar 2026 |
| Stamper-Fowler G-13-282505 | Oakridge Oil and Gas, LP only | JMG Mag (Miss) | Jack | 1 | 217 | 2.43K | Apr 2017 – Mar 2026 |
| Barnes, Leon G-2-178858 | Fowler Oil & Gas LLC only | Gata (Wilcox 10,600) | Lavaca | 1 | 216 | 88.4K | Jun 2000 – Feb 2002 |
| Fowler-Neal O-9-8323 | Rogers, M. L. only | Benedum (Fusselman) | Upton | 1 | 212 | 5.33K | Jan 1993 – Oct 1994 |
| Leslie Ploeger No. 2 GU G-2-199088 | Fowler Oil & Gas LLC only | Borchers Deep (Freeman Sand) | Jackson | 1 | 208 | 3.99M | Sep 2003 – Mar 2026 |
| Fowler G-9-105051 | Hoffman, Rudolf A. only | Pony Creek (Ellenburger) | Runnels | 1 | 197 | 73K | Jan 1993 – Apr 2005 |
| Freeman G-2-180374 | Fowler Oil & Gas LLC only | Speaks, SW. (Simpson) | Lavaca | 1 | 182 | 4.4M | Oct 2000 – Mar 2026 |
| Fowler, B. M. 303 O-5-1166 | Union Oil Company of California only | Van | Van Zandt | 2 | 167 | 69 | Jan 1993 – Apr 1993 |
| Fowler (McDonnold) G-4-171644 | Sun Exploration, Inc. only | Het (2700) | San Patricio | 1 | 165 | 25.2K | Aug 1998 – May 2002 |
| Fowler G-13-121266 | Winfield Operating Company only | Rusmag, SE. (Congl. 4900) | Jack | 1 | 163 | 32.7K | Feb 1993 – Jun 2012 |
| Fowler, Jesse G-5-174592 | Howitzer Operating, LLC only | Bremond (Travis Peak) | Robertson | 1 | 156 | 300K | Feb 1999 – Jun 2011 |
| Hancock GU #1 G-2-221079 | Fowler Oil & Gas LLC only | Provident City (Wilcox 14,000) | Lavaca | 1 | 152 | 4.55M | Jun 2006 – Mar 2026 |
| Fowler 'A' G-5-282708 | Diversified Production LLC only | Oletha (Travis Peak) | Limestone | 1 | 105 | 241K | Apr 2017 – Apr 2026 |
| Stamper-Fowler G-13-286883 | Oakridge Oil and Gas, LP only | JMG Mag (Miss) | Jack | 1 | 100 | 16.7K | May 2019 – Apr 2026 |
| Fowler, G. W. "A" G-13-29220 | Veteran Exploration & Prod, LLC only | Boonsville (Bend Congl., Gas) | Jack | 1 | 60 | 365K | Jan 1993 – Apr 2026 |
| Jacobs Ranch G-2-214498 | Fowler Oil & Gas LLC only | The Rapture (12700 Sand) | Lavaca | 1 | 46 | 1.92M | Jul 2005 – Mar 2026 |
| Fowler G-8-57215 | Dallas Production, Inc. only | Meeker (Conglomerate 4800) | Palo Pinto | 1 | 35 | 54.4K | Jan 1993 – Mar 2001 |
| Freeman G-2-254390 | Fowler Oil & Gas LLC only | Speaks, SW. (Rainbow) | Lavaca | 1 | 30 | 692K | Jan 2009 – Mar 2026 |
| Freeman G-2-191255 | Fowler Oil & Gas LLC only | Speaks, SW. (Rainbow) | Lavaca | 1 | 30 | 1.11M | Jul 2002 – Mar 2026 |
| Freeman G-2-270823 | Fowler Oil & Gas LLC only | Speaks, SW. (Rainbow) | Lavaca | 1 | 30 | 57K | Aug 2013 – Mar 2026 |
| French Estate G-2-173382 | Fowler Oil & Gas LLC only | Speaks, SW. (Rainbow) | Lavaca | 1 | 22 | 236K | Feb 1999 – Jul 2002 |
| Hancock, Eva Ruth G-2-186323 | Fowler Oil & Gas LLC only | Provident City (Wilcox 14800 SD) | Lavaca | 1 | 13 | 7.59M | Jul 2001 – Mar 2026 |
| Crandall, Rubie G-2-202798 | Fowler Oil & Gas LLC only | Crandall Rubie (L. Sibley Sand) | Lavaca | 1 | 9 | 3.29M | Jul 2003 – Mar 2026 |
| Freeman G-2-185348 | Fowler Oil & Gas LLC only | Speaks, SW. (Rainbow) | Lavaca | 1 | 8 | 65K | Aug 2001 – Mar 2025 |
| Morris Fowler G-13-241299 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 3 | 1.75M | Nov 2005 – Apr 2026 |
| Fowler O-8-15110 | T-Square Petroleum only | Blind Hog (Ranger) | Eastland | 1 | 2 | 3.19K | Apr 1994 – Jul 1995 |
| Fowler, G. W., -A- G-13-29219 | Enerfin Resources II-92 L.P. only | Boonsville (Bend Congl., Gas) | Jack | 1 | 1 | 0 | Apr 1993 – Apr 1993 |
| Migl-Quinn G-2-184664 | Fowler Oil & Gas LLC only | Speaks, SW. (Simpson) | Lavaca | 1 | 1 | 643K | Jun 2001 – Apr 2008 |
| Stamper-Fowler G-13-279766 | Oakridge Oil and Gas, LP only | JMG Mag (Miss) | Jack | 1 | 1 | 42 | May 2019 – Jun 2021 |