| Johnston Ranch O-1-17738 | Flint Oak Energy, LLC only | Pearsall (Austin Chalk) | Frio | 12 | 600K | 33.7K | Nov 2013 – Jul 2026 |
| Johnston HC1 Dim O-1-19702 | Ineos USA Oil & Gas LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 273K | 731K | Dec 2018 – Jul 2026 |
| Johnston Enterprises Dim O-1-15771 | Ineos USA Oil & Gas LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 254K | 640K | Jan 2012 – Jul 2026 |
| Johnston HC4 Dim O-1-19703 | Ineos USA Oil & Gas LLC only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 221K | 843K | Dec 2018 – Jul 2026 |
| Johnston, Dellah -B- O-7-6963 | Long Trusts, The only | East Texas | — | 5 | 191K | 94.3K | Jan 1993 – Jul 2026 |
| Jerry Johnston Dim O-1-15620 | Ineos USA Oil & Gas LLC only | Briscoe Ranch (Eagleford) | Dimmit | 2 | 180K | 416K | Sep 2011 – Jul 2026 |
| Johnston No. O-3-27326 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Madison | 3 | 159K | 87.9K | Sep 2017 – Jul 2026 |
| Johnston O-11-62845 | Aviator Energy, LLC only | P. H. D. (Glorieta) | Garza | 4 | 152K | 4.11K | Jan 1993 – Jul 2026 |
| Johnston Ranch O-3-25562 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 3 | 122K | 97.4K | Mar 2010 – Jul 2026 |
| Johnston, J. T. -B- O-9-2842 | Black Gold Well Service only | Water Valley (San Andres) | — | 9 | 121K | 120 | Jan 1993 – Jul 2026 |
| Johnston -A- O-1-12907 | Silver Rock Energy, LLC only | Pearsall (Austin Chalk) | Frio | 1 | 103K | 17 | Jan 1993 – Jul 2026 |
| Johnston O-3-23166 | Barrow-Shaver Resources Co. only | BSR (Sub-Clarksville) | Madison | 1 | 102K | 107K | Feb 1997 – Feb 2003 |
| Hardin-Johnston-Starnes O-14-821 | Kodiak Operating, LLC only | Panhandle Hutchinson County Fld. | Hutchinson | 26 | 84.9K | 251K | Jan 1993 – Jul 2026 |
| Johnston, John M O-11-67924 | Sabinal Energy Operating, LLC only | Harris | Gaines | 1 | 81.2K | 17.9K | Mar 1998 – Aug 2024 |
| Johnston, James J. O-3-17311 | Adams Resources Expl. Corp. only | Giddings (Austin Chalk-3) | Washington | 2 | 80.2K | 831K | Jan 1993 – Jun 2013 |
| Johnston State -A- O-10-33109 | Toc Energy Resources, LLC only | GW (Ellenburger) | Pecos | 1 | 76.5K | 3.76K | Jan 1993 – Jul 2026 |
| Johnston, W. L. O-6-882 | Southwest Operating, Inc.-Tyler only | Manziel (Sub-Clarksville) | — | 1 | 75K | 19 | Jan 1993 – Jul 2026 |
| Johnston, Clay "A" O-11-12336 | Viejo Oil & Gas, LLC only | P. H. D. | — | 2 | 75K | 20 | Jan 1993 – Jul 2026 |
| Johnston O-1-12644 | Silver Rock Energy, LLC only | Pearsall (Austin Chalk) | Frio | 1 | 68.2K | 19 | Jan 1993 – Jul 2026 |
| Johnston & Parr Unit O-1-10127 | Sellers Lease Service, Inc. only | Little New York | Gonzales | 5 | 60.8K | 60 | Jan 1993 – Jul 2026 |
| Johnston Unit O-3-25583 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Washington | 1 | 60.7K | 1.18M | Jun 2010 – Jul 2026 |
| Johnston, Joe H. O-1-9193 | Sellers Lease Service, Inc. only | Little New York | Gonzales | 8 | 57.6K | 815 | Jan 1993 – Jul 2026 |
| Johnston, J. T. -A- O-9-2100 | Black Gold Well Service only | Water Valley (San Andres) | — | 9 | 48.4K | 120 | Jan 1993 – Jul 2026 |
| Johnston, Clay O-11-11897 | Viejo Oil & Gas, LLC only | P. H. D. | — | 2 | 44.3K | 20 | Jan 1993 – Jul 2026 |
| Johnston-Osage Unit B O-1-18312 | Flint Oak Energy, LLC only | Pearsall (Austin Chalk) | Frio | 1 | 42.3K | 1.09K | Oct 2014 – Jul 2026 |
| New O-2-9233 | Blue Wing Energy, Inc. only | Johnstone (Lower Frio) | Victoria | 2 | 39.6K | 51.3K | May 2007 – Jul 2026 |
| Johnston Oil Unit No. 1 O-3-7851 | Odum Oil & Gas Co. only | Hardin | — | 2 | 36.9K | 3.3K | Jan 1993 – Jul 2026 |
| Johnston, Annie O-8-4970 | Ashtola Exploration Company,inc. only | John Anderson (Mississippi) | Throckmorton | 4 | 35.8K | 230 | Jan 1993 – Feb 2019 |
| Johnston, Jimmy O-1-13358 | Bedford Oil & Gas, Inc. only | Pearsall (Austin Chalk) | Frio | 1 | 35.6K | 26 | Jan 1993 – Mar 2008 |
| Johnston, W. A. O-11-8654 | Unitex Oil & Gas, L.L.C. only | Sharon Ridge (1700) | Scurry | 4 | 30.6K | 803 | Jan 1993 – Jul 2026 |
| Johnston O-14-822 | C & C Oil Producers only | Panhandle Hutchinson County Fld. | Hutchinson | 10 | 29.6K | 45.4K | Jan 1993 – Jun 2000 |
| Johnston-Osage Unit O-1-18103 | Flint Oak Energy, LLC only | Pearsall (Austin Chalk) | Frio | 1 | 29.1K | 285 | Apr 2014 – Jul 2026 |
| Johnston, Hoyt et Al O-6-12335 | Basa Resources, Inc. only | Slocum, S. (Sub-Clarksville) | Anderson | 2 | 29K | 38.1K | Jan 1993 – Jul 2018 |
| Johnston Unit O-6-15161 | 3-T Exploration, Inc. only | Lane Chapel (Paluxy a Sand) | Smith | 1 | 25.2K | 0 | Jan 2013 – Jul 2026 |
| Johnston, J. O-13-23246 | C & C Operating, LLC only | River Bend (Conglomerate) | Young | 1 | 24.6K | 30.2K | Jan 1993 – Jul 2026 |
| Johnston, J. H. O-9-4633 | Gilstrap, Joel only | Water Valley (Clear Fork) | Tom Green | 5 | 22K | 36 | Jan 1993 – Jul 2026 |
| Johnston, J. T., Est. O-9-2320 | Black Gold Well Service only | Water Valley (San Andres) | — | 6 | 20.8K | 120 | Jan 1993 – Jul 2026 |
| Miller, A. B. O-2-8100 | Moose Operating Co., Inc. only | Ashford (Johnston Yegua) | Lavaca | 1 | 18.5K | 40.9K | Jul 1995 – Sep 1996 |
| Johnston, J.H. "A" O-9-12074 | Gilstrap, Joel only | Water Valley (Clear Fork) | Tom Green | 1 | 18.4K | 36 | Jan 1993 – Jul 2026 |
| Johnston Unit O-13-23264 | BKM Production only | Stein (Strawn) | Grayson | 1 | 18.3K | 19 | Jan 1993 – Jul 2026 |
| Johnston O-9-2099 | Gilstrap, Joel only | Water Valley (San Andres) | — | 2 | 15.7K | 42 | Jan 1993 – Jul 2026 |
| Johnston-Lane O-1-13847 | Express Oil Co. only | M.E.I (Wilcox 4300) | Gonzales | 1 | 15.2K | 27 | Mar 1994 – Jul 2026 |
| Johnston, C. B. O-11-4614 | Aviator Energy, LLC only | P. H. D. | Garza | 3 | 14.6K | 5.9K | Jan 1993 – Jul 2026 |
| Johnston, J. H. "B" O-9-12244 | Gilstrap, Joel only | Water Valley (Clear Fork) | Tom Green | 2 | 14K | 42 | Jan 1993 – Jul 2026 |
| Johnston O-3-24131 | Sue-Ann Operating, L.C. only | Garwood, North (D-y Sand) | Colorado | 1 | 13.1K | 0 | Feb 2002 – Jan 2006 |
| Johnston, C. B. O-7-8305 | R2Q Operating LLC only | East Texas | — | 1 | 12.8K | 0 | Jan 1993 – Jul 2026 |
| Johnston -B- O-1-12938 | Silver Rock Energy, LLC only | Pearsall (Austin Chalk) | Frio | 1 | 11.4K | 19 | Jan 1993 – Jul 2026 |
| Johnston, J. N. O-13-26026 | CD Consulting & Operating Co. only | Bryant-Dobos (Congl) | Wilbarger | 1 | 11.3K | 7.55K | Jan 1993 – Jul 2026 |
| Johnston O-1-15786 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Frio | 1 | 9.82K | 3.81K | Aug 2011 – Jul 2026 |
| Johnston -H- O-1-4746 | U.S.A. Plugging Company only | Pearsall (Austin Chalk) | — | 2 | 9.69K | 105 | Jan 1993 – May 2006 |