| Cornell Unit O-11-19453 | Hilcorp Energy Company only | Wasson | Yoakum | 268 | 20.3M | 35.4M | Jan 1993 – Apr 2026 |
| Corner S Ranch O-1-17210 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | McMullen | 19 | 4.78M | 3M | Oct 2013 – Apr 2026 |
| Four Corners TXL Fee O-9-17726 | Diamondback E&P LLC only | Spraberry (Trend Area) | Upton | 90 | 2.87M | 10.4M | Jan 2012 – Apr 2026 |
| Benge Corner O-10-36644 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 54 | 2.44M | 6.35M | Jun 2001 – Apr 2026 |
| Four Corners TXL Fee "C" O-10-44507 | Diamondback E&P LLC only | Sallie Ann (Spraberry-Wolfcamp) | Upton | 48 | 2.33M | 8.95M | Oct 2013 – Apr 2026 |
| Ohio-Sun Unit O-3-2998 | Allegiant Resources, LLC only | Markham N.-Bay City,n(cornelius) | Matagorda | 53 | 1.05M | 1.25M | Jan 1993 – Apr 2026 |
| Corner S Ranch MCM O-1-16040 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | McMullen | 8 | 888K | 556K | Aug 2012 – Apr 2026 |
| Four Corners Ranch-Unit 'B' O-1-18355 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Frio | 5 | 759K | 687K | Mar 2015 – Mar 2026 |
| Four Corners Ranch-Unit 'A' O-1-18146 | Javelin Energy Partners Mgmt LLC only | Briscoe Ranch (Eagleford) | Atascosa | 5 | 719K | 579K | Nov 2014 – Mar 2026 |
| State QUADRICORN1617AGG Houston O-10-49319 | Continental Resources, Inc. only | Phantom (Wolfcamp) | Ward | 1 | 646K | 1.06M | Jul 2017 – Apr 2026 |
| Cornfield Unit O-1-15934 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 16 | 556K | 1.44M | May 2012 – Apr 2026 |
| Cornett O-11-68916 | Clark, John M., Inc. only | Dust Devil (San Andres) | Gaines | 3 | 533K | 32.3K | Mar 2006 – Apr 2026 |
| State Quadricorn 1617B GG H O-10-52270 | Continental Resources, Inc. only | Phantom (Wolfcamp) | Ward | 1 | 483K | 993K | Apr 2019 – Apr 2026 |
| Four Corners 1729 B O-10-58208 | Diamondback E&P LLC only | Spraberry (Trend Area) | Ector | 1 | 467K | 371K | Oct 2022 – Apr 2026 |
| Four Corners 1729 A O-10-58066 | Diamondback E&P LLC only | Spraberry (Trend Area) | Ector | 1 | 439K | 415K | Oct 2022 – Apr 2026 |
| Corning Loudamy -29- O-10-34001 | Diamondback E&P LLC only | Patience (Penn-Reef) | Howard | 1 | 376K | 2.03M | Oct 1993 – Jul 2019 |
| State Quadricorn 1617C GG H O-10-52762 | Continental Resources, Inc. only | Phantom (Wolfcamp) | Ward | 1 | 327K | 550K | Apr 2019 – Apr 2026 |
| Four Corners 1423 G O-10-58301 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 305K | 164K | Mar 2023 – Apr 2026 |
| Corner S Ranch West MCM O-1-17467 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | McMullen | 2 | 265K | 178K | Feb 2014 – Apr 2026 |
| Four Corners TXL Fee 'B' O-10-45228 | Diamondback E&P LLC only | Sallie Ann (Spraberry-Wolfcamp) | Ector | 12 | 243K | 496K | Jul 2014 – Apr 2026 |
| Four Corners 1423 E O-10-58308 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 237K | 187K | Feb 2023 – Apr 2026 |
| Corningstone O-10-55550 | SM Energy Company only | Spraberry (Trend Area) | Howard | 1 | 232K | 337K | Apr 2021 – Apr 2026 |
| Four Corners 1423 A O-10-58302 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 230K | 264K | Feb 2023 – Apr 2026 |
| Four Corners 1423 B O-10-58303 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 221K | 239K | Feb 2023 – Apr 2026 |
| Unicorn Unit B 37-04 O-10-50916 | Surge Operating, LLC only | Spraberry (Trend Area) | Borden | 2 | 213K | 146K | Jun 2018 – Mar 2026 |
| Four Corners Sec 22 O-10-44898 | Diamondback E&P LLC only | Sallie Ann (Spraberry-Wolfcamp) | Upton | 8 | 209K | 458K | Apr 2014 – Apr 2026 |
| Four Corners 1423 H O-10-58310 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 207K | 128K | Mar 2023 – Apr 2026 |
| Four Corners 1423 C O-10-60110 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 200K | 130K | Feb 2023 – Apr 2026 |
| Four Corners Sec 14 O-10-45032 | Diamondback E&P LLC only | Sallie Ann (Spraberry-Wolfcamp) | Ector | 8 | 188K | 317K | Mar 2014 – Apr 2026 |
| Unicorn Unit a 04-37 O-10-50857 | Surge Operating, LLC only | Spraberry (Trend Area) | Borden | 1 | 181K | 157K | Dec 2017 – Mar 2026 |
| Four Corners 1423 D O-10-58304 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 170K | 252K | Feb 2023 – Apr 2026 |
| Tippett, J. H. -E- O-10-31805 | Acorn Oil & Gas, LLC only | Yates | Pecos | 4 | 168K | 435 | Jan 1993 – Apr 2026 |
| Four Corner O-13-29190 | R2Q Operating LLC only | Davidson | Archer | 5 | 168K | 0 | Aug 1996 – Mar 2026 |
| Four Corners 1423 F O-10-58309 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 166K | 140K | Feb 2023 – Apr 2026 |
| Capitan Bowling Cntr., Inc -B- O-9-6120 | Free Rein Operating LLC only | Four Corners (Crosscut, LO) | Schleicher | 3 | 160K | 10.6K | Jan 1993 – Apr 2026 |
| Cozy Corner Unit O-3-22312 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 147K | 362K | Jan 1994 – Apr 2026 |
| Four Corners TXL Fee 'A' O-9-18378 | Diamondback E&P LLC only | Spraberry (Trend Area) | Upton | 4 | 137K | 369K | Oct 2013 – Dec 2024 |
| Cornagie, Faye O-10-20992 | P.o.&g. Operating, LLC only | Ward, South | Ward | 11 | 130K | 63.6K | Jan 1993 – Apr 2026 |
| Anna Lee O-14-7638 | Brown & Borelli, Inc. only | Barton Corners (Cleveland, Up.) | Lipscomb | 1 | 86.2K | 794K | Jun 2005 – Apr 2026 |
| White & Baker -L- O-10-8055 | Acorn Oil & Gas, LLC only | White & Baker | Pecos | 16 | 81.1K | 128K | Jan 1993 – Apr 2026 |
| Cornelia O-3-24054 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 71.3K | 311K | Feb 2001 – Jul 2025 |
| Cornegie, Faye, -C- O-10-21106 | P.o.&g. Operating, LLC only | Ward, South | Ward | 10 | 70.6K | 31.6K | Jan 1993 – Apr 2026 |
| Cornelius, L. O-3-24381 | Rumble Energy LLC only | Wadsworth, S. (Savage 10,100) | Matagorda | 2 | 69.6K | 484K | Jun 2003 – Dec 2023 |
| Devon Cornett O-11-69282 | White Rock Oil & Gas, LLC only | Dust Devil (San Andres) | Gaines | 1 | 65.2K | 13K | Sep 2008 – Apr 2026 |
| Cornerstone Unit O-3-19389 | Gaither Petroleum Corporation only | Cornerstone (Clodine) | Fort Bend | 2 | 64.9K | 4.37K | Jan 1993 – Jun 2005 |
| Dad's Corner O-13-27675 | Cholla Petroleum, Inc. only | Hull-Silk-Sikes (4000) | Archer | 2 | 59.1K | 40 | Jan 1993 – Jul 1998 |
| Corning 29 O-10-43813 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 2 | 58.9K | 587K | Feb 2013 – Mar 2026 |
| Cornersville/Pittsburg Sand/Unit O-6-4103 | Valence Operating Company only | Cornersville (Pittsburg SD) | Franklin | 2 | 54.1K | 74 | Jan 1993 – Apr 2026 |
| Txi O-3-17122 | Gaither Petroleum Corporation only | Cornerstone, N.E. (Clodine) | Fort Bend | 1 | 50.4K | 2.75K | Jan 1993 – Mar 2006 |
| Williams, A., Mrs. O-13-7547 | Alcorn, Jerry D. only | Young County Regular | Young | 14 | 49.8K | 23 | Jan 1993 – Mar 2026 |