| Richey Sec. 42 "A" O-9-8491 | Pioneer Natural Res. USA, Inc. only | Probandt (Canyon) | Irion | 9 | 51.5K | 736K | by Jan 1993 – Jan 2024 |
| Clay, H. R. -B- O-10-2745 | Robertson Resources, Inc. only | Howard Glasscock | Howard | 4 | 51.4K | 27 | by Jan 1993 – Oct 2014 |
| Roberts -C- O-10-2711 | MGM Oil & Gas Company only | Howard Glasscock | Howard | 6 | 51.2K | 20 | by Jan 1993 – Nov 2011 |
| Parks-Koonsman O-11-63539 | Robert C. Brower, LLC only | Gordon Simpson (Spraberry) | Garza | 2 | 50.9K | 8.64K | by Jan 1993 – Jul 2020 |
| Doss, M. S. O-11-62123 | Chesapeake Operating, Inc. only | Robertson, N. (San Andres) | Gaines | 2 | 50.7K | 71.4K | by Jan 1993 – Nov 2006 |
| Nunn B O-9-11133 | Robertson Resources, Inc. only | Spraberry (Trend Area) | Reagan | 4 | 50.3K | 472K | by Jan 1993 – Jul 2024 |
| Roberts, Mollie O-13-25311 | O'Neal Oil Company only | Tina Nyce (Strawn) | Montague | 3 | 50.2K | 21 | by Jan 1993 – Aug 2026 |
| Carter, Robert W. O-1-1872 | SGB Oil LLC only | Salt Flat | Caldwell | 11 | 49.8K | 58.1K | by Jan 1993 – Aug 2026 |
| Wallin, H. C. O-10-12103 | Ocean Energy, Inc. only | Dora Roberts (Devonian) | Midland | 2 | 49.8K | 374K | by Jan 1993 – Aug 2000 |
| Sims, H. T. O-11-12007 | Robert C. Brower, LLC only | Tonto (Canyon Sand) | Scurry | 3 | 49.6K | 21 | by Jan 1993 – Aug 2026 |
| Flowers C3 G-14-273084 | BE Anadarko II, LLC only | Roberts Co. (St. Louis) | Roberts | 1 | 49.6K | 4.49M | May 2013 – Aug 2026 |
| Robert Grimm Unit O-3-22176 | EOG Resources, Inc. only | Giddings (Austin Chalk-3) | Lee | 1 | 49.3K | 33K | Sep 1993 – Aug 2026 |
| Arco Fee O-3-23087 | Roberson Oil Company only | Highbaugh (Wilcox Rochna Sand) | Tyler | 1 | 49.2K | 249K | May 1996 – Aug 1999 |
| Doyle, Robert B G-14-267105 | Highmark Energy Operating, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 49.1K | 118K | Apr 2011 – Sep 2019 |
| Flowers XS G-14-275162 | BE Anadarko II, LLC only | Roberts Co. (St. Louis) | Roberts | 1 | 49K | 4.92M | Aug 2013 – Aug 2026 |
| Reagan, Robert O-2-7816 | TT Operating, LLC only | Oakville (Wilcox-First Slick SD) | Live Oak | 2 | 49K | 31.2K | by Jan 1993 – Feb 2016 |
| Malone O-9-1615 | Roberts & Hammack Inc. only | Spraberry (Trend Area) | Reagan | 4 | 48.9K | 216K | by Jan 1993 – Jul 2019 |
| Dunn "a" Robyn O-11-64816 | Three J's Petroleum, Inc. only | Allen-Holiday (Penn.) | Scurry | 1 | 48.6K | 38.2K | by Jan 1993 – Jul 2014 |
| Spearman, Robert F. "C" O-3-13264 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 47.9K | 182K | by Jan 1993 – Aug 2024 |
| Gibson, J. J. O-11-62035 | Gunn Oil Company only | Probable (Canyon) | King | 1 | 47.8K | 21 | by Jan 1993 – Sep 2010 |
| Robertson, T.P. O-8-12483 | Walton Producing Inc. only | Stephens County Regular | Stephens | 2 | 47.8K | 2.57K | by Jan 1993 – Nov 2008 |
| Sutter's Mill G-14-245467 | Winright Resources Operating,llc only | Roberts Co. (St. Louis) | Roberts | 1 | 47.6K | 4.02M | Aug 2008 – Mar 2018 |
| Roberts, C.H. Gas Unit G-6-160085 | Merit Energy Company only | Glenwood (Cotton Valley) | Upshur | 1 | 47.4K | 2.27M | Sep 1996 – Aug 2026 |
| Robinson O-10-44061 | Birch Operations, Inc. only | Spraberry (Trend Area) | Howard | 2 | 47.4K | 82.6K | Apr 2013 – Jun 2018 |
| Roberts, Dora, -E- O-10-48148 | Wash, Robert C. Inc. only | Howard Glasscock (Consolidated) | Howard | 2 | 47.1K | 121 | Dec 2011 – Jul 2026 |
| Robertson-Deats "B" O-13-29513 | Aspen Operating Company, L.L.C. only | Lost Valley (Caddo) | Jack | 1 | 46.4K | 138K | Mar 1998 – Aug 2006 |
| Dennis, Sol D. Oil Unit No. 1 O-6-11460 | Basa Resources, Inc. only | Melissa-Robin (Pettet) | Rusk | 1 | 46.2K | 1.89K | by Jan 1993 – Aug 2026 |
| Roberts, Dora -a- & -B- O-10-2815 | 5H Oil Co., LLC only | Howard Glasscock | Glasscock | 19 | 45.8K | 32 | by Jan 1993 – Nov 2011 |
| Doyle, Robert B G-14-278576 | Highmark Energy Operating, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 45.8K | 497K | Feb 2015 – Aug 2026 |
| Settles O-10-47958 | Wash, Robert C. Inc. only | Howard Glasscock (Consolidated) | Howard | 3 | 45.6K | 121 | Dec 2011 – Jul 2026 |
| Robbins, T. E. O-8-11860 | Ase Operations LLC only | Simons | Haskell | 2 | 45.6K | 141 | by Jan 1993 – Jun 2020 |
| Lewis, C. L. O-5-2604 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 3 | 45.4K | 55.2K | by Jan 1993 – Aug 2026 |
| Deloney Heirs O-6-14485 | Wynn-Crosby Operating, Ltd. only | Quitman-Robbins (Rod.- Kirk.) | Wood | 2 | 45.3K | 177K | Sep 2005 – Aug 2026 |
| State Tract 306-L NE/4 G-3-199884 | Tri-C Resources, LLC only | Dolphin Prospect (Rob M 8100) | Galveston-LB | 1 | 44.7K | 9.19M | Jul 2004 – May 2009 |
| Wash-Douthit "D" O-10-33315 | Wash, Robert C. Inc. only | Howard Glasscock | Howard | 4 | 44.3K | 549 | by Jan 1993 – Nov 2011 |
| Robinson, J. M. O-13-25942 | Eagleridge Operating, LLC only | Boonsville (Caddo Congl., N.) | Wise | 1 | 44.1K | 6.44K | by Jan 1993 – May 2021 |
| Dotson, Alice "A" O-5-2442 | Roberts & Hammack Inc. only | Red Oak (Sub-Clarksville) | Leon | 3 | 43.9K | 44.7K | by Jan 1993 – Aug 2026 |
| Campbell -C- O-13-20288 | Craig, Robert A. only | Young County Regular | Young | 6 | 43.7K | 21 | by Jan 1993 – Aug 2026 |
| Robertson -G- O-8-9406 | S.B. Street Operating, Inc. only | Christian (Miss.) | Stephens | 1 | 43.4K | 60K | by Jan 1993 – Aug 2026 |
| Moore, M. A. O-11-61905 | Samedan Oil Corporation only | Robertson (San Andres) | Gaines | 9 | 43.2K | 8.05K | by Jan 1993 – Nov 1994 |
| Smith, George W. "A" O-11-62843 | Landreth, Robert E. only | Levelland | Cochran | 1 | 43.1K | 4.98K | by Jan 1993 – Nov 2004 |
| Robinson, J. W. -State O-13-27244 | Kramer Operating, LLC only | Miller Bend (Miss.) | Young | 1 | 42.9K | 21 | by Jan 1993 – Aug 2026 |
| Robertson Hill Ranch B G-13-277362 | Willowbend Investments, Inc. only | Newark, East (Barnett Shale) | Palo Pinto | 1 | 42.9K | 993K | Oct 2008 – Jun 2015 |
| Hildebrand G-9-201201 | Tall Dune Resources, LLC only | Probandt (Canyon) | Sterling | 1 | 42.8K | 407K | Feb 2004 – Aug 2026 |
| Flowers XS E3 G-14-267732 | BE Anadarko II, LLC only | Roberts Co. (St. Louis) | Roberts | 1 | 42.6K | 3.83M | Oct 2012 – Aug 2026 |
| Lentz, Zac O-2-8228 | Valerius, Robert D. Inc. only | Eloise, SE. (Knott 5640) | Victoria | 1 | 42.6K | 49.3K | Dec 1996 – Jul 2001 |
| Doss, M. S. a/C 2 O-11-63240 | Citation Oil & Gas Corp. only | Robertson, N. (Clear Fork 7100) | Gaines | 1 | 42.2K | 34K | by Jan 1993 – Feb 2016 |
| Roberts "B" O-14-8245 | Huntington Energy, L.L.C. only | Pan Petro (Cleveland) | Ochiltree | 12 | 42.1K | 148K | May 2011 – Aug 2026 |
| J.L. Flowers XS G-14-268220 | Winright Resources Operating,llc only | Roberts Co. (St. Louis) | Roberts | 1 | 41.5K | 1.44M | Jun 2012 – Oct 2020 |
| Doyle, Robert B. G-14-217045 | Resource Oil and Gas, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 41.5K | 336K | Apr 2006 – Aug 2016 |