| Claytonville /Canyon Lime/ Unit O-8-7959 | Winn Operating, LLC only | Claytonville (Canyon Lime) | Fisher | 70 | 3.3M | 6.27M | Jan 1993 – Apr 2026 |
| Martin, Nan "A" O-11-68405 | Aviator Energy, LLC only | Clayton Ranch, N. (Spraberry) | Borden | 34 | 3.21M | 739K | Jan 2002 – Apr 2026 |
| Bridwell River Ranch O-13-1458 | Bridwell Oil Co. only | Clay County Regular | Clay | 41 | 3.21M | 4.45M | Jan 1993 – Apr 2026 |
| Sprayberry Field Unit O-11-67425 | Aviator Energy, LLC only | Clayton Ranch, N. (Spraberry) | Borden | 13 | 2.15M | 422K | Aug 1995 – Aug 2010 |
| Clayton Ranch O-11-67539 | Apache Corporation only | Apclark (Strawn) | Borden | 4 | 1.58M | 1.12M | Feb 1996 – Aug 2015 |
| Clay Creek East Unit O-3-9434 | Hyperion Oil & Gas LLC only | Clay Creek | Washington | 66 | 994K | 455K | Jan 1993 – Apr 2026 |
| Clay, H. R. O-10-2741 | Endeavor Energy Resources L.P. only | Howard Glasscock | Howard | 25 | 879K | 68.8K | Jan 1993 – Nov 2011 |
| Clay O-10-2750 | Cimarex Energy Co. of Colorado only | Howard Glasscock | Howard | 37 | 865K | 415K | Jan 1993 – Nov 2011 |
| Scott 21-G O-11-68276 | Extex Operating Company only | Clayton Ranch, N. (Spraberry) | Borden | 4 | 722K | 310K | Mar 2001 – Apr 2026 |
| Clayton-Johnson "G" O-11-13196 | Yukon Exploration Operating, LLC only | Good, SE. (Fusselman) | Borden | 1 | 669K | 387K | Jan 1993 – Apr 2026 |
| Jred Ranch O-1-21280 | Hamilton, Clay only | Briscoe Ranch (Eagleford) | Dimmit | 6 | 600K | 1.8M | Nov 2023 – Apr 2026 |
| Barclays B Unit O-10-50687 | Apache Corporation only | Spraberry (Trend Area) | Howard | 2 | 597K | 1.2M | Jun 2018 – Apr 2026 |
| Clay Creek West Unit O-3-9388 | Hyperion Oil & Gas LLC only | Clay Creek | Washington | 48 | 576K | 163K | Jan 1993 – Apr 2026 |
| Clay Pasture -B- State Unit O-2-9381 | T-C Oil Company, LLC only | Anaqua, South (3000) | Refugio | 3 | 539K | 104K | Dec 2009 – Apr 2026 |
| Barclays Unit O-10-49389 | Apache Corporation only | Spraberry (Trend Area) | Howard | 2 | 532K | 1.04M | Aug 2017 – Apr 2026 |
| Clay, H. R. -E- O-10-2692 | Quantum Resources Management,llc only | Howard Glasscock | Howard | 48 | 526K | 4.73K | Jan 1993 – Nov 2011 |
| Clay Allison W O-10-46268 | Permian Resources Operating, LLC only | Wolfbone (Trend Area) | Reeves | 2 | 494K | 1.58M | Apr 2015 – Jan 2024 |
| Clay Prewit 206-207 Unit C O-10-54827 | Noble Energy Inc only | Phantom (Wolfcamp) | Reeves | 1 | 458K | 817K | Oct 2020 – Apr 2026 |
| Clay Prewit 206-207 Unit B O-10-54809 | Noble Energy Inc only | Phantom (Wolfcamp) | Reeves | 1 | 427K | 910K | Oct 2020 – Apr 2026 |
| Anderson O-3-21569 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Brazos | 3 | 409K | 1.67M | Jan 1993 – Sep 2013 |
| Clay Prewit 206-207 Unit A O-10-54973 | Noble Energy Inc only | Phantom (Wolfcamp) | Reeves | 1 | 394K | 778K | Oct 2020 – Apr 2026 |
| Clayton, A.M. "E" NCT-2 O-11-13465 | Yukon Exploration Operating, LLC only | Good, SE. (Fusselman) | Borden | 2 | 380K | 285K | Jan 1993 – Apr 2026 |
| Johnson O-11-67491 | Extex Operating Company only | Clayton Ranch, N. (Spraberry) | Borden | 4 | 369K | 243K | Jan 1996 – Apr 2026 |
| Clay O-6-15688 | Valence Operating Company only | Girlie Caldwell (Goodland LM) | Smith | 1 | 368K | 104K | May 2019 – Apr 2026 |
| Silver O-11-69928 | Aviator Energy, LLC only | Clayton Ranch, N. (Spraberry) | Borden | 3 | 362K | 85.1K | Jun 2012 – Apr 2026 |
| Martin, Nan "B" O-11-68682 | Primexx Operating Corporation only | Clayton Ranch, N. (Spraberry) | Borden | 12 | 327K | 192K | Aug 2004 – Mar 2009 |
| Harrison & Allen O-13-1607 | R2Q Operating LLC only | Clay County Regular | Clay | 34 | 324K | 32 | Jan 1993 – Feb 2026 |
| Milberger Unit O-3-22604 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Burleson | 1 | 280K | 117K | Dec 1994 – Oct 2003 |
| Clay Heirs O-7-7332 | Basa Resources, Inc. only | East Texas | Rusk | 29 | 280K | 21 | Jan 1993 – Apr 2026 |
| Clay, H. R. -E- O-10-18993 | Quantum Resources Management,llc only | Howard-Glasscock (Glorieta) | Howard | 24 | 267K | 2.36K | Jan 1993 – Nov 2011 |
| Clay O-10-42235 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 29 | 230K | 24.9K | Dec 2011 – Apr 2026 |
| Clayton O-3-25832 | Trailblazer Energy Resources,llc only | Halliday (Woodbine) | Leon | 1 | 224K | 753K | Dec 2011 – Apr 2026 |
| Shiner Heirs O-1-10412 | Williams, Clayton Energy, Inc. only | Pearsall (Austin Chalk) | Frio | 12 | 222K | 30.3K | Jan 1993 – Dec 2012 |
| J.M. Atkins Unit O-3-22146 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Brazos | 2 | 219K | 1.99M | Aug 1993 – Oct 2005 |
| Clayton O-9-15797 | COG Operating LLC only | Spraberry (Trend Area) | Upton | 6 | 216K | 662K | Sep 2005 – Apr 2026 |
| Stine -A- O-13-1517 | Yet Profits, LLC only | Clay County Regular | Clay | 76 | 213K | 19 | Jan 1993 – Mar 2026 |
| Flowers Plantation Unit O-3-22807 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Robertson | 1 | 212K | 53.7K | Aug 1995 – Oct 1999 |
| Clayton-Johnson O-11-12873 | Yukon Exploration Operating, LLC only | Good, SE. (Fusselman) | Borden | 2 | 211K | 220K | Jan 1993 – Mar 2015 |
| Clay Pasture -B- State Unit O-2-9332 | T-C Oil Company, LLC only | Anaqua (3100) | Refugio | 3 | 207K | 76.4K | Jul 2009 – Apr 2026 |
| Porter-Bowden Unit O-3-22957 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Burleson | 1 | 207K | 312K | Feb 1996 – Nov 2002 |
| Clay, H. R. -A- O-10-2691 | Quantum Resources Management,llc only | Howard Glasscock | Howard | 42 | 205K | 12.3K | Jan 1993 – Nov 2011 |
| McDougal-Crant O-3-22100 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 195K | 216K | Apr 1993 – Nov 2009 |
| Clay, H. R. -C- O-10-2823 | Breitburn Operating L.P. only | Howard Glasscock | Howard | 10 | 191K | 6.97K | Jan 1993 – Nov 2011 |
| Grant-McDougal Unit O-3-21775 | Williams, Clayton Energy, Inc. only | Giddings (Austin Chalk-3) | Brazos | 2 | 187K | 228K | Jan 1993 – Nov 2008 |
| Johnson, Clayton "22" O-11-66306 | Fagadau Energy Corporation only | Clayton Ranch, N. (Spraberry) | Borden | 3 | 187K | 205K | Jan 1993 – Jul 1995 |
| Morgan, Clay O-3-21375 | Redbud E & P, Inc. only | Giddings (Austin Chalk-3) | Fayette | 1 | 186K | 1.1M | Jan 1993 – Apr 2026 |
| Clay, H. R. O-10-2738 | Wash, Robert C. Inc. only | Howard Glasscock | Glasscock | 27 | 186K | 45 | Jan 1993 – Nov 2011 |
| Trigger O-11-69966 | Aviator Energy, LLC only | Clayton Ranch, N. (Spraberry) | Borden | 1 | 183K | 44.5K | Jun 2012 – Apr 2026 |
| Clayton, William -A- O-7-7513 | 4-Sight Operating Company, Ltd. only | East Texas | Gregg | 10 | 178K | 120K | Jan 1993 – Apr 2026 |
| Block 72 Unit O-2-6896 | Hedrick Production Inc. only | Clayton (Queen City -B-) | Live Oak | 1 | 176K | 17.3K | Jan 1993 – Mar 2026 |