| Scharbauer, Clarence "Deep" O-10-35823 | Occidental Permian Ltd. only | Jars (Ellenburger) | Ector | 2 | 829K | 428K | Jul 1998 – Aug 2017 |
| Clarence O-11-1045 | Atlas Operating LLC only | Diamond -M- (Clear Fork) | Scurry | 8 | 204K | 21 | Jan 1993 – Mar 2026 |
| Clarence O-10-33692 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 2 | 171K | 346K | Feb 1993 – Jun 2024 |
| Durrenberger, Clarence O-3-19333 | Trivista Operating LLC only | Serbin (Taylor Sand) | Lee | 7 | 147K | 79.2K | Jan 1993 – Jan 2026 |
| Scharbauer, Clarence "34" O-10-31822 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 2 | 73.9K | 131K | Jan 1993 – Jan 2024 |
| Iou Ranch "B" O-8-28722 | Clear Fork, Incorporated only | Clarence-May (Tannehill) | Stonewall | 1 | 73.6K | 0 | Jan 2000 – Apr 2026 |
| Hopper, Clarence Estate G-6-146922 | Maximus Operating, Ltd. only | Hopper (Rodessa) | Smith | 1 | 71.5K | 2.2M | Jul 1993 – Nov 2018 |
| Anderson, Clarence "B" O-14-6499 | Large Operating LLC only | Panhandle Gray County Field | Gray | 6 | 65K | 98.4K | Jan 1993 – Jan 2016 |
| Clarence O'Berg Gas Unit G-4-143190 | Proline Energy Resources Inc only | La Sal Vieja (Frio Cons) | Willacy | 1 | 56.5K | 1.62M | Jan 1993 – Mar 2025 |
| Scharbauer, C. 'a' NCT-2 O-10-36369 | Chevron U. S. A. Inc. only | Clarence Scharbauer (Strawn) | Midland | 4 | 50.3K | 189K | Jul 2000 – May 2002 |
| Porter, Clarence O-11-60009 | Fasken Oil and Ranch, Ltd. only | Clara Good (Fusselman) | Borden | 1 | 43.3K | 27.8K | Jan 1993 – Feb 2005 |
| Scharbauer, Clarence et Al G-10-251857 | Chevron U. S. A. Inc. only | Bryant -G- (Devonian) | Midland | 1 | 29.4K | 292K | Apr 2009 – Apr 2014 |
| Scharbauer, Clarence et Al O-10-37913 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 1 | 29.2K | 124K | Dec 2005 – Jan 2023 |
| Mitchell "B" O-8-28562 | Clear Fork, Incorporated only | Clarence-May (Tannehill) | Stonewall | 1 | 28K | 0 | Jan 1999 – Jun 2021 |
| Scharbauer, C. "D" O-10-33175 | Chevron U. S. A. Inc. only | Clarence Scharbauer (Strawn) | Midland | 2 | 24.4K | 247K | Jan 1993 – Aug 2009 |
| Dixon,clarence O-5-1942 | Spence, Ralph Oil Company, Inc. only | Ardis & Leggett (Paluxy) | Hopkins | 1 | 23.5K | 44 | Jan 1993 – Jul 2005 |
| Scharbauer, Clarence et Al G-10-256280 | Chevron U. S. A. Inc. only | Bryant -G- (Devonian) | Midland | 1 | 22.7K | 328K | Aug 2009 – Dec 2016 |
| Werner-Clarence O-6-14536 | TGNR Panola LLC only | Carthage (Travis Peak) | Panola | 2 | 20.5K | 135K | Aug 2006 – Jan 2020 |
| Clarence O'Berg Gas Unit "A" G-4-153575 | Wagner Oil Company only | La Sal Vieja (8 and 9 Frio) | Willacy | 1 | 17.3K | 1.16M | Feb 1995 – May 2001 |
| Helfenbein, Clarence O-14-3472 | H & K Plugging and Salvage only | Darrouzett, NW. (Tonkawa) | Lipscomb | 2 | 15.2K | 60.5K | Jan 1993 – Apr 1999 |
| Hepler, Clarence O-3-21438 | Puls, W. L. only | Stowell (Intermediate U-2) | Chambers | 1 | 14K | 18.9K | Jan 1993 – Jul 2001 |
| Hepler, Clarence O-3-20675 | Puls Operating Company only | Stowell (6500) | Chambers | 1 | 12.3K | 384 | Jan 1993 – Mar 2010 |
| Iou Ranch C O-8-31544 | Clear Fork, Incorporated only | Clarence-May (Tannehill) | Stonewall | 1 | 8.59K | 0 | Jul 2014 – Feb 2024 |
| Clarence Wallace G-13-264728 | Scout Energy Management LLC only | Newark, East (Barnett Shale) | Wise | 1 | 7.91K | 1.52M | Jul 2011 – Jan 2024 |
| Scharbauer, Clarence et Al O-10-36777 | COG Operating LLC only | Midland, West (Strawn) | Midland | 1 | 7.49K | 61.4K | Sep 2001 – Nov 2005 |
| Schulze, Clarence O-3-19285 | Seay Oil & Gas, Ltd. only | Serbin (Taylor Sand) | Lee | 1 | 7.41K | 9.1K | Jan 1993 – Dec 2006 |
| Alonzo, Clarence O-1-2391 | Fullspike Energy LLC only | Minerva-Rockdale | Milam | 1 | 4.51K | 30 | Jan 1993 – Dec 2017 |
| Lowe-J. E. Hill a/C 2 O-10-615 | Samson Hydrocarbons Company only | Clarence Scharbauer (Strawn) | Midland | 1 | 4.2K | 18.7K | Jan 1993 – Sep 1994 |
| Mitchell, Jack O-8-24637 | Clear Fork, Incorporated only | Clarence-May (Tannehill) | Stonewall | 2 | 4.19K | 21 | Jan 1993 – May 2007 |
| Werner - Clarence Gas Unit G-6-254983 | TGNR Panola LLC only | Carthage (Travis Peak) | Panola | 1 | 4.01K | 85.7K | Dec 2008 – Apr 2015 |
| Werner - Clarence Gas Unit G-6-263391 | TGNR Panola LLC only | Carthage (Pettit, Lower) | Panola | 1 | 3.92K | 247K | Jul 2007 – Sep 2020 |
| Scharbauer, C. Jr. O-10-36807 | Chevron U. S. A. Inc. only | Clarence Scharbauer (Strawn) | Midland | 2 | 2.09K | 119K | Apr 2001 – Jan 2010 |
| Anderson, Clarence "A" O-14-6294 | Makar Production Company only | Panhandle Gray County Field | Gray | 6 | 1.81K | 6.05K | Jan 1993 – Apr 1995 |
| Werner-Clarence Unit G-6-162856 | TGNR Panola LLC only | Carthage (Cotton Valley) | Panola | 1 | 1.36K | 419K | Jan 1997 – Jul 2014 |
| Hale, Clarence O-1-7571 | RPG Operating LLC only | Fairfield | Bexar | 1 | 1.25K | 19 | Jan 1993 – Apr 2013 |
| Pippen, Clarence O-8-25722 | Cuatro Oil and Gas Corporation only | Pippen (Caddo) | Eastland | 1 | 1.21K | 2.56K | Jan 1993 – Feb 1994 |
| Iou Ranch O-8-28442 | Clear Fork, Incorporated only | Clarence-May (Tannehill) | Stonewall | 1 | 1.11K | 0 | Apr 1998 – Dec 2008 |
| Parker, Clarence Henry "a" 618 O-14-7217 | Amoco Production Company only | Lipscomb, East (Tonkawa) | Lipscomb | 1 | 727 | 1.74K | Jun 1997 – May 1998 |
| Werner-Clarence G-6-235249 | TGNR Panola LLC only | Carthage (Travis Peak) | Panola | 1 | 365 | 208K | Dec 2007 – Feb 2017 |
| Gunn, Clarence O-11-64690 | Bill's Welding & Roustabout, Inc only | Forbes (Glorieta) | Garza | 1 | 279 | 7 | Jan 1993 – Sep 1993 |
| Collins, Clarence C. O-1-1960 | Crystal Resources, Inc only | Cooksey | Bexar | 3 | 274 | 16 | Jan 1993 – Jun 1995 |
| Eager, Clarence O-9-9904 | Morrison Drlg. & Prod. Co., Inc. only | Morrison (Fry) | Runnels | 2 | 260 | 12 | Jan 1993 – Apr 1994 |
| Neufeld et al -a- Clarence -H- G-14-88342 | Latigo Petroleum, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 198 | 460K | Jan 1993 – Mar 2026 |
| Parker, Clarence Henry -a- 618 G-14-98735 | BP America Production Company only | Lipscomb, E. (Morrow Lo.) | Lipscomb | 1 | 192 | 51.2K | Jan 1993 – Apr 2000 |
| Collins, Clarence C. O-1-2081 | Crystal Resources, Inc only | Reasor (Cooksey Sand) | Bexar | 3 | 128 | 14 | Jan 1993 – Mar 1995 |
| O'Berg, Clarence Gas Unit No. 1 G-4-74850 | Proline Energy Resources Inc only | La Sal Vieja (Frio Cons) | Willacy | 1 | 119 | 59.5K | Jan 1993 – Jun 1994 |
| Zbranek, Clarence G-3-159710 | Patterson Energy Corporation only | New Taiton (Frio 4000) | Wharton | 1 | 12 | 383K | May 1996 – Jun 2004 |
| Werner-Clarence G-6-219570 | TGNR Panola LLC only | Carthage (Travis Peak) | Panola | 1 | 7 | 170K | Mar 2006 – Dec 2011 |
| Parker, Clarence Henry "a" 618 G-14-172182 | BP America Production Company only | Lipscomb (Atoka) | Lipscomb | 1 | 0 | 0 | — |
| Badt, Clarence O-6-5927 | Via, James R. only | Talco | Titus | 1 | 0 | 0 | — |