| Read Unit G-13-266769 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 4.25K | 523K | Jun 2012 – Apr 2026 |
| Treadwell "C" O-8-28125 | Salty Lime Energy, LLC only | Throckmorton County Regular | Throckmorton | 1 | 4.17K | 16 | Mar 1997 – Aug 1998 |
| JBM Treadwell "CS" O-8-28239 | Cottonwood Petroleum Co. only | Throckmorton County Regular | Throckmorton | 1 | 4.16K | 31 | Sep 1997 – Mar 2000 |
| Anderson-Read O-11-65268 | R K Petroleum Corp. only | Tex-Hamon, North (Fusselman) | Dawson | 1 | 4.11K | 15 | Jan 1993 – Apr 1994 |
| Treadaway G-6-188087 | Diversified Production LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 4.07K | 788K | Feb 2002 – Apr 2026 |
| Treadwell Gas Unit G-6-229164 | BRG Lone Star Ltd. only | Ezim (Travis Peak) | Rusk | 1 | 3.81K | 4.44K | Apr 2007 – Nov 2012 |
| Treadwell #1 O-6-15353 | Lease Holders Acquisitions LLC only | Ezim (Travis Peak) | Rusk | 1 | 3.79K | 0 | Dec 2012 – Jul 2017 |
| Treadwell-Allen Unit G-8-69179 | Borderline Operating Corp. only | Harken (Conglomerate) | Palo Pinto | 1 | 3.75K | 115K | Feb 1993 – Oct 2011 |
| Ready, Roberts G-4-182193 | Rodessa Operating Company only | Rosita (10,250) | Duval | 1 | 3.23K | 358K | Feb 2001 – May 2010 |
| Threadgill O-13-31042 | Canan Operating, Inc. only | Newark, East (Barnett Shale) | Clay | 1 | 3.18K | 12.1K | Mar 2008 – Sep 2010 |
| Read -a- "34" O-10-26837 | Triple "N" Services, Inc. only | Coahoma, N. (Fussel) | Howard | 1 | 3.11K | 82.2K | Jan 1993 – Oct 1999 |
| Treadwell O-9-14584 | Tidal Petroleum, Inc. only | Camar, N. (Canyon Sand) | Schleicher | 2 | 3.03K | 1.02K | May 1997 – Sep 1998 |
| Pitchfork-Toreador "17" O-11-67197 | Sauder Management Company only | G. Beggs (Tannehill) | Dickens | 1 | 2.82K | 3 | Jan 1994 – Mar 1994 |
| Read L G-14-234105 | Burk Royalty Co., Ltd. only | Panhandle, West | Hutchinson | 1 | 2.82K | 511K | Mar 2007 – Apr 2026 |
| Treadaway G-6-188759 | Diversified Production LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 2.78K | 1.11M | Feb 2002 – Apr 2026 |
| Read, H. D. et Al G-13-124705 | Upham Oil & Gas Company only | Boonsville (Bend Congl., Gas) | Wise | 1 | 2.7K | 1.58M | Jan 1993 – Apr 2026 |
| Treadwell G-14-82880 | Linn Operating, Inc. only | Briscoe (Morrow) | Wheeler | 1 | 2.7K | 2.98M | Jan 1993 – Dec 2008 |
| Flowers Read 28 G-14-278066 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 2.67K | 343K | Feb 2015 – Apr 2021 |
| Read 20 O-10-33882 | K.W.A., Inc. only | Coahoma (Miss) | Howard | 1 | 2.66K | 3.15K | Jun 1993 – Jun 1996 |
| Treadwell, JBM "EE" O-8-28179 | Cottonwood Petroleum Co. only | Throckmorton County Regular | Throckmorton | 1 | 2.63K | 42 | Jun 1997 – Nov 2000 |
| Braman, D. H. Jr. et Al O-2-8104 | Home Petroleum Corp. only | Gingerbread (Frio 6000 Sd.) | Victoria | 1 | 2.61K | 0 | Aug 1995 – Jan 2002 |
| Threadgill "B" O-8-27730 | Beasley Well Service Inc. only | Creslenn (Swastika) | Jones | 2 | 2.56K | 0 | Oct 1995 – Mar 2015 |
| Delwin-Jett O-11-69027 | Ableready, Inc. only | Eratz (Canyon Lime) | Cottle | 1 | 2.51K | 0 | Jun 2005 – Jan 2023 |
| Wardlow, W. D. O-11-67682 | Read & Stevens, Inc. only | Padgett (Devonian) | Yoakum | 1 | 2.47K | 0 | Jan 1997 – Sep 1997 |
| Treadwell "D" O-8-28195 | Cottonwood Petroleum Co. only | Throckmorton County Regular | Throckmorton | 1 | 2.41K | 73 | Jun 1997 – Jun 2003 |
| Treadwell "CWS" O-8-28342 | Cottonwood Petroleum Co. only | Throckmorton County Regular | Throckmorton | 1 | 2.33K | 42 | Dec 1997 – May 2001 |
| Read Heirs G-13-91364 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 2.32K | 416K | Jan 1993 – Oct 2018 |
| Read Trust "A" G-14-189964 | Presidio Petroleum LLC only | Hemphill (Douglas) | Hemphill | 1 | 2.23K | 184K | Oct 2002 – Aug 2008 |
| Treadwell "M" O-8-28522 | Cottonwood Petroleum Co. only | Throckmorton County Regular | Throckmorton | 1 | 2.22K | 41 | Sep 1998 – Jan 2002 |
| Treadwell, J. H. O-9-6006 | Telesis Operating Co., Inc. only | Fort McKavitt (Canyon) | Schleicher | 1 | 2.15K | 23K | Aug 1998 – Sep 2012 |
| Read G-14-196775 | Burk Royalty Co., Ltd. only | Panhandle, West (Red Cave) | Hutchinson | 1 | 2.02K | 517K | May 2003 – Apr 2026 |
| Read Trust 'A' G-14-236969 | Presidio Petroleum LLC only | Hemphill (Douglas) | Hemphill | 1 | 1.96K | 426K | Feb 2008 – Feb 2020 |
| Treadaway G-6-188085 | Diversified Production LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 1.47K | 349K | Nov 2001 – Apr 2026 |
| Read "B" O-11-67718 | Southwestern Energy Prod. Co. only | Brahaney | Yoakum | 1 | 1.45K | 0 | Apr 1997 – Jan 1998 |
| Read Trust G-14-174819 | Bracken Operating, L.L.C. only | Hemphill (Douglas) | Hemphill | 1 | 1.43K | 443K | Oct 1999 – Feb 2022 |
| Read -a- (Miss) O-10-25676 | McCann Corporation only | Coahoma (Miss) | Howard | 3 | 1.41K | 44.1K | Jan 1993 – Sep 2004 |
| Read G-14-27128 | Burk Royalty Co., Ltd. only | Panhandle, West (Red Cave) | Hutchinson | 1 | 1.4K | 446K | Jan 1993 – Apr 2026 |
| Bergman -B- O-10-7302 | Treadaway Oil Co. only | Ward, South | Ward | 2 | 1.37K | 21 | Jan 1993 – Aug 2007 |
| Treadwell O-9-13538 | Hannathon Petroleum, LLC only | Fort McKavitt (Canyon) | Schleicher | 1 | 1.12K | 1.22K | Oct 1993 – Oct 1995 |
| Threadgill, R.V. -B- O-1-12206 | Trinidad Petroleum, Inc. only | Bateman (Austin Chalk) | Bastrop | 2 | 1.12K | 27 | Jan 1993 – Jul 2001 |
| Read O-11-65963 | Extex Operating Company only | Brahaney (Miss.) | Yoakum | 4 | 1.09K | 583 | Jan 1997 – Jan 2009 |
| Read -A- O-10-25361 | Texas Reexploration Operating LC only | Coahoma, N. (Fussel) | Howard | 3 | 1.08K | 39.4K | Jan 1993 – Sep 2004 |
| Pitchfork-Toreador "J" O-11-67049 | Canan Mowrey Operating, LLC only | Keller Ridge, South (Tannehill) | Dickens | 1 | 956 | 4 | Apr 1993 – Jul 1993 |
| Braman, D. H. Jr. Etal O-2-7833 | Waters Eng. & Operating, Inc. only | Gingerbread (Frio 6000 Sd.) | Victoria | 1 | 811 | 434 | Jan 1993 – Mar 1993 |
| Read G-14-23607 | Burk Royalty Co., Ltd. only | Panhandle, West | Moore | 1 | 714 | 2.24M | Jan 1993 – Apr 2026 |
| Read G-13-226704 | Winchester Oil & Gas LLC only | Newark, East (Barnett Shale) | Parker | 1 | 699 | 369K | Jun 2006 – Feb 2016 |
| Read -20- O-10-28015 | EOG (Oklahoma) Inc. only | Coahoma, N. (Fussel) | Howard | 1 | 690 | 594 | Jan 1993 – Jun 1993 |
| Treadaway G-6-190473 | Quantum Resources Management,llc only | Willow Springs (Cotton Valley) | Gregg | 1 | 688 | 232K | Jun 2002 – Apr 2013 |
| Bentley O-10-16117 | Treadaway Oil Co. only | Ward, South | Ward | 1 | 677 | 20 | Jan 1993 – Jul 1997 |
| Treadwell G-9-18886 | Treadwell, Gary C. only | Fort McKavitt (Canyon) | Schleicher | 1 | 646 | 57.3K | Jan 2004 – Feb 2015 |