| Richardson Unit O-11-4610 | Cholla Petroleum, Inc. only | P. H. D. | Garza | 26 | 1.51M | 261K | Jan 1993 – Jan 2026 |
| Dawlean Richardson O-1-19842 | FW Eagle Ford I, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 2 | 721K | 486K | Feb 2019 – Jul 2026 |
| Arco-Richardson 5 O-9-13310 | Petroplex Energy Inc. only | Triumph (Wolfcamp) | Upton | 1 | 531K | 1.31M | Jan 1993 – Jul 2026 |
| Richardson Ranch Unit O-3-25563 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Brazos | 3 | 291K | 415K | May 2010 – Jul 2026 |
| Richardson, T. J. O-8-26707 | Apache Corporation only | Katz | Knox | 3 | 275K | 1.58K | Jan 1993 – May 2010 |
| Childress-Richardson "4" O-9-13377 | Petroplex Energy Inc. only | Triumph (Wolfcamp) | Upton | 1 | 261K | 633K | Jan 1993 – Jul 2026 |
| Richardson O-1-16224 | CML Exploration, LLC only | Pearsall (Austin Chalk) | Dimmit | 1 | 236K | 62.7K | Nov 2011 – Jul 2026 |
| Bloxom O-9-13795 | Saxum Opco, LLC only | W. Richardson, E. (Wlfc.) | Upton | 2 | 225K | 619K | May 1995 – Jul 2026 |
| Josey, L.M. "A" O-3-19090 | Josey Oil Company, Ltd. only | Joyce Richardson | Harris | 3 | 208K | 103K | Jan 1993 – Jul 2026 |
| Richardson Unit No. 2 O-5-2646 | Culver & Cain Production LLC only | Megan Richey (Woodbine) | Limestone | 1 | 203K | 21 | Jan 1993 – Jul 2026 |
| Clark-Richardson O-13-684 | Palmer Operating LLC only | Archer County Regular | Archer | 26 | 183K | 206 | Jan 1993 – Jul 2026 |
| Richardson North O-8-29219 | Apache Corporation only | Katz | Knox | 3 | 167K | 0 | Mar 2003 – Feb 2010 |
| Richardson Unit NCT O-11-68885 | Cholla Petroleum, Inc. only | P. H. D. | Garza | 4 | 149K | 43.7K | Feb 2006 – Jan 2026 |
| Richardson, J. T. "Abc" O-13-571 | Guidance Oil Developers only | Archer County Regular | Archer | 43 | 149K | 0 | Jan 1993 – Jul 2026 |
| Richardson North O-8-30431 | Great American Resources Inc. only | Katz (Strawn) | Knox | 4 | 126K | 0 | Nov 2009 – Jul 2026 |
| Childress-Richardson '13' O-9-13527 | Petroplex Energy Inc. only | Triumph (Wolfcamp) | Upton | 1 | 123K | 216K | Oct 1993 – Sep 2022 |
| Richardson O-11-69445 | Canan Mowrey Operating, LLC only | Dalwood (Woods Lime) | Dickens | 1 | 119K | 0 | Jun 2009 – Jul 2026 |
| Richardson O-8-32397 | Chisholm Operating, Inc. only | Grand Old Oplin (Gray) | Taylor | 6 | 118K | 273K | Sep 2019 – Jul 2026 |
| Sheppard-Anne O-6-13734 | Buffco Production Inc. only | Blocker (Richardson Sand) | Harrison | 1 | 114K | 147K | Sep 1997 – Jul 2026 |
| Richardson, J. T. O-13-314 | Olney Oil LLC only | Archer County Regular | Archer | 29 | 108K | 163 | Jan 1993 – Jul 2026 |
| Bauer O-9-11247 | Hardrock Resources Inc. only | Dick Richardson (Palo Pinto,li.) | Runnels | 1 | 95.7K | 20.8K | Jan 1993 – Jul 2026 |
| Richardson Unit -A- O-11-13106 | Cholla Petroleum, Inc. only | P. H. D. | Garza | 5 | 94K | 2.8K | Jan 1993 – Jan 2026 |
| State O-9-12318 | 3 S Production, Inc. only | Dick Richardson (Gardner Lime) | Runnels | 1 | 90.8K | 117K | Jan 1993 – Mar 2026 |
| Richardson O-9-13669 | Thompson, J. Cleo only | W. Richardson (Wolfcamp) | Upton | 1 | 89.5K | 161K | Aug 1994 – Dec 2020 |
| Sims-Richardson O-11-65059 | Blake Production Company, Inc. only | Spires, W. (Strawn C-1) | Kent | 2 | 89.2K | 57.8K | Jan 1993 – Aug 2017 |
| Richardson, C.A. O-13-29043 | Daylight Petroleum LLC only | T-N-T (Tannehill) | Knox | 4 | 77.5K | 0 | Oct 1995 – Jul 2026 |
| Richardson 'B' O-10-45644 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 2 | 73.5K | 291K | Jun 2014 – Jul 2026 |
| Killian "A" O-3-12397 | Fort Worth Natural Gas, Inc. only | Joyce Richardson (6900 Yegua) | Harris | 1 | 73.1K | 51.1K | Jan 1993 – Jul 2026 |
| Richardson O-10-44647 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 2 | 72.7K | 363K | Oct 2013 – Jul 2026 |
| Richardson-Rosenbaum Unit O-3-18283 | All Around Distribution, Inc. only | Clay Creek | Washington | 4 | 71.4K | 36.6K | Jan 1993 – Jul 2026 |
| Wilson, Floyd Oil Unit O-6-12822 | Enpower Resources Inc. only | Blocker (Richardson Sand) | Harrison | 2 | 69.8K | 203K | Jan 1993 – Jul 2026 |
| Richardson 71 O-14-9632 | Mewbourne Oil Company only | Allen-Parker (Marmaton) | Ochiltree | 1 | 69.1K | 846K | May 2018 – Jul 2026 |
| Richardson, O. T. O-11-67147 | Cazador Operating, LLC only | Mirage (Strawn) | Scurry | 1 | 67K | 88.7K | Oct 1993 – Apr 2018 |
| Killian O-3-11209 | Fort Worth Natural Gas, Inc. only | Joyce Richardson (6900 Yegua) | — | 1 | 65.3K | 36.5K | Jan 1993 – Jul 2026 |
| Richardson, O. T. "65" O-11-67841 | Cazador Operating, LLC only | Mirage (Strawn) | Scurry | 1 | 64.8K | 153K | Dec 1997 – Jul 2018 |
| Richardson, O. T. "66" O-11-67740 | Cazador Operating, LLC only | Mirage (Strawn) | Scurry | 1 | 62.4K | 195K | May 1997 – Jul 2018 |
| Richardson, L. O-6-3129 | Southwest Operating, Inc.-Tyler only | Manziel (Sub-Clarksville) | — | 1 | 58.8K | 19 | Jan 1993 – Jul 2026 |
| Neal, George #2 O-6-12679 | Enpower Resources Inc. only | Blocker (Richardson Sand) | Harrison | 1 | 53.7K | 325K | Jan 1993 – Jul 2026 |
| Maxwell, P. D. O-3-13097 | Fort Worth Natural Gas, Inc. only | Joyce Richardson | Harris | 1 | 51.8K | 9.1K | Jan 1993 – Jul 2026 |
| Bevil-Richardson Section 26 O-3-20006 | Continental Operating Co. only | Sabine Tram, SW (Wilcox 1ST) | Newton | 1 | 45.5K | 387K | Jan 1993 – Jul 2018 |
| Richardson O-14-6851 | Courson Oil & Gas, Inc. only | Ellis Ranch (Cleveland) | Ochiltree | 1 | 44.7K | 164K | Jan 1993 – Nov 2011 |
| Richardson Oil Unit #3 O-3-7291 | Odum Oil & Gas Co. only | Hardin | — | 1 | 43.8K | 22.8K | Jan 1993 – Jul 2026 |
| Richardson O-14-4723 | Courson Oil & Gas, Inc. only | Pshigoda, N. (Des Moines) | Ochiltree | 3 | 43.7K | 226K | Jan 1993 – Jul 2026 |
| Bosh OU O-6-13999 | Enpower Resources Inc. only | Blocker (Richardson Sand) | Harrison | 1 | 42.7K | 172K | Jan 2000 – Jul 2026 |
| Wilson O-9-11107 | 3 S Production, Inc. only | Dick Richardson (Palo Pinto,li.) | Runnels | 2 | 41.4K | 9.53K | Jan 1993 – Jul 2026 |
| Richardson Unit O-6-13214 | Lacy Operations, Ltd. only | Carthage (Travis Peak) | Panola | 1 | 37K | 144K | Sep 1993 – Nov 2006 |
| Richardson O-14-4304 | Courson Oil & Gas, Inc. only | Farnsworth, SE. (Cleveland) | Ochiltree | 1 | 36.5K | 190K | Jan 1993 – Jul 2026 |
| Richardson, J. A. O-11-12761 | Endeavor Energy Resources L.P. only | Triple D (Penn. Reef) | Dawson | 3 | 34.5K | 5.22K | Jan 1993 – Jan 2009 |
| Richardson, O. J., Fee O-13-5554 | Azteca Operating, Inc. only | Wichita County Regular | Wichita | 37 | 34K | 21 | Jan 1993 – Jul 2026 |
| Johnson, Eva O-8-19719 | Richardson Resources Inc only | Steel (Gray) | Callahan | 1 | 33.9K | 25.4K | Jan 1993 – Jul 2026 |