| Schuster Gas Unit G-4-242572 | Wagner Oil Company only | Donna (Harrell) | Hidalgo | 1 | 1.66K | 167K | Nov 2008 – Aug 2009 |
| Sorenson Gas Unit G-4-213782 | Wagner Oil Company only | Donna (Harrell) | Hidalgo | 1 | 1.62K | 106K | Oct 2005 – Apr 2006 |
| Harrell G-8-94666 | Lowrance Inc. only | Ledbetter (Ranger) | Stephens | 1 | 1.6K | 321K | Feb 1993 – Aug 2026 |
| Texfel-Harrell G-8-148362 | Richey, Ray Management Co., Inc. only | Reb (Marble Falls) | Eastland | 1 | 1.56K | 13.6K | Feb 1994 – Sep 1995 |
| Harrell G-13-114741 | Stovall Operating Co. only | Young County Regular (Gas) | Young | 1 | 1.49K | 145K | by Jan 1993 – Aug 2022 |
| Harrell, Mary Blackburn G-3-93753 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk, Gas) | Lee | 1 | 1.36K | 107K | by Jan 1993 – Oct 1995 |
| Harrell "C" G-5-146008 | Hilcorp Energy Company only | Bear Grass (Pettit) | Leon | 1 | 1.23K | 586K | May 1993 – Aug 2026 |
| Harrell "A" G-9-87212 | Zarvona Energy LLC only | Ozona, NE. (Canyon 7520) | Crockett | 1 | 1.22K | 251K | by Jan 1993 – Aug 2026 |
| Duggan-Harrell Unit G-8-135543 | Petex only | Pitz (Duffer) | Stephens | 1 | 1.13K | 612K | by Jan 1993 – May 2015 |
| Swallow Gas Unit G-4-157398 | Wagner Oil Company only | Donna (Harrell) | Hidalgo | 1 | 1.08K | 333K | Dec 1995 – Dec 2005 |
| Harrell, I. C. O-8-1447 | Pardue Oil only | Eastland County Regular | Eastland | 2 | 943 | 2.78K | by Jan 1993 – Sep 1999 |
| Harrell Gas Unit No. 1 G-6-259269 | Diversified Production LLC only | Brachfield, S.E. (Cotton Valley) | Rusk | 1 | 892 | 189K | Oct 2010 – Dec 2023 |
| Texfel-Harrell O-8-21310 | Richey, Ray Management Co., Inc. only | Reb (Marble Falls) | Eastland | 4 | 842 | 12.3K | by Jan 1993 – Jan 1994 |
| Harrell Gas Unit G-6-221605 | Bowles Energy, Inc. only | Henderson, E. (Cotton Valley) | Rusk | 1 | 821 | 245K | Apr 2006 – Aug 2026 |
| Harrell, E. L. O-2-2552 | Hardin Energy Co., Inc. only | Tuleta, South (Hockley) | Bee | 2 | 818 | 49 | by Jan 1993 – Apr 1997 |
| Snow-Harrell O-8-24252 | Eastland Operating, L.L.C. only | Eastland County Regular | Eastland | 1 | 757 | 19.8K | by Jan 1993 – Jul 2003 |
| Wright & Harrell -A- O-8-1515 | Mehaffey Investments, Inc. only | Eastland County Regular | Eastland | 2 | 701 | 23K | by Jan 1993 – Jun 1998 |
| Harrell, C.J. G-8-83577 | Lowrance Inc. only | Ledbetter (Ranger) | Eastland | 1 | 676 | 330K | by Jan 1993 – Aug 2026 |
| Harrell, M. "A" G-8-148377 | Texxol Operating Company, Inc. only | Reb (Marble Falls) | Eastland | 1 | 662 | 493K | Dec 1993 – Aug 2026 |
| Harrell, Jeanette G-6-265845 | TGNR Panola LLC only | Beckville (Cotton Valley) | Panola | 1 | 546 | 1.98M | Mar 2011 – Aug 2026 |
| Harrell, Mary Blackburn Unit G-3-97567 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk, Gas) | Lee | 1 | 521 | 22.8K | by Jan 1993 – Sep 1995 |
| Harrell G-6-111248 | Texas Utilities Fuel Co. only | Oak Hill (Cotton Valley) | Rusk | 1 | 506 | 61.2K | by Jan 1993 – Nov 1996 |
| Harrell, Jeanette G-6-157060 | TGNR Panola LLC only | Carthage (Cotton Valley) | Panola | 1 | 498 | 838K | Nov 1995 – Aug 2026 |
| Harrell G-8-196692 | Eastland Operating, L.L.C. only | Eastland County Regular (Gas) | Eastland | 1 | 489 | 68.4K | Aug 2003 – Aug 2026 |
| Harrell, Jeanette Unit G-6-267836 | TGNR Panola LLC only | Beckville (Cotton Valley) | Panola | 1 | 402 | 3.11M | Jun 2012 – Aug 2026 |
| Harrell, J. C. G-8-196753 | Braka Operating, L.L.C. only | North Ridge (Duffer) | Eastland | 1 | 377 | 55.5K | Jul 2003 – Aug 2026 |
| Harrell, R. A. G-9-76459 | Zarvona Energy LLC only | Ozona, NE. (Canyon 7520) | Crockett | 1 | 376 | 186K | by Jan 1993 – Aug 2026 |
| Harrell, C.J. O-8-24941 | Yellow Rose Oil & Gas Oper. Inc. only | Ranger (Black Lime West) | Eastland | 1 | 340 | 7.47K | by Jan 1993 – Aug 1997 |
| Harrell, T. B. "B" O-8-19982 | Dino Operating LLC only | BMW (King Sand) | Jones | 2 | 332 | 15 | by Jan 1993 – Jun 2006 |
| Harrell G-8-143299 | Ryder Scott Oil Company only | Throckmorton County Regular(gas) | Throckmorton | 1 | 321 | 1.04K | by Jan 1993 – Jan 1993 |
| Burnett, A. O-13-23290 | Harrell Operating, L.L.C. only | Cottle (Bend Conglomerate) | Young | 1 | 300 | 33.7K | by Jan 1993 – Jan 2004 |
| Wright-Harrell G-8-125045 | Mogul Resources, LLC only | H.P.C. (Conglomerate) | Eastland | 1 | 253 | 267K | by Jan 1993 – Sep 2022 |
| Harrell, W.M. O-1-5164 | Exxcel Operating Company only | Charlotte (Navarro) | Atascosa | 1 | 243 | 18 | Feb 1993 – May 1995 |
| Harrell, Jeanette G-6-208881 | TGNR Panola LLC only | Carthage (Cotton Valley) | Panola | 1 | 221 | 359K | Jan 2005 – Aug 2026 |
| Parker -A- G-9-71557 | Thompson, J. Cleo only | Parker-Harrell (Ellenburger) | Crockett | 1 | 217 | 10.3K | by Jan 1993 – Mar 1994 |
| Harrell, M. 'A' O-8-21371 | Richey, Ray Management Co., Inc. only | Reb (Marble Falls) | Eastland | 1 | 216 | 7.29K | by Jan 1993 – Nov 1993 |
| Harrell, Jeanette G-6-103406 | TGNR Panola LLC only | Carthage (Cotton Valley) | Panola | 1 | 205 | 737K | by Jan 1993 – Aug 2026 |
| Harrell G-8-112548 | Texxol Operating Company, Inc. only | Snow (Duffer) | Eastland | 1 | 165 | 186K | by Jan 1993 – Feb 2019 |
| Snow-Harrell G-8-129518 | Eastland Operating, L.L.C. only | Eastland County Regular | Eastland | 1 | 162 | 87.8K | by Jan 1993 – Aug 2026 |
| Hill-Weldon O-8-25316 | Harrell, Charles only | Welwood-Hill (Mississippian) | Stephens | 1 | 143 | 635 | by Jan 1993 – Aug 1994 |
| Harrell, J. G. G-8-215648 | Basa Resources, Inc. only | Lakeside (Congl 3960) | Stephens | 1 | 113 | 10.8K | Mar 2006 – Dec 2007 |
| Burnett, Dovie 1562 O-13-27378 | Harrell Operating, L.L.C. only | Young County Regular | Young | 1 | 107 | 10.3K | Oct 2001 – Sep 2005 |
| Harrell O-9-18014 | North Lake Resources LLC only | Holt Ranch (Consolidated) | Crockett | 1 | 95 | 6.7K | Aug 2012 – Nov 2012 |
| Harrell, Wright O-8-21759 | Hanvey, Don H. Oil Interests Inc only | Hanvey (Lake Sand) | Eastland | 2 | 89 | 5.91K | by Jan 1993 – Dec 1996 |
| Harrell -C- G-5-95484 | Marathon Oil Company only | Bear Grass (Travis Peak) | Leon | 1 | 77 | 13.8K | by Jan 1993 – May 1995 |
| Harrell Gas Unit No. 2 G-6-251516 | Diversified Production LLC only | Brachfield, S.E. (Cotton Valley) | Rusk | 1 | 68 | 6.38K | Dec 2009 – Jan 2011 |
| Harrell Gas Unit 3 (TP) G-6-299165 | Diversified Production LLC only | Minden (Travis Peak Cons.) | Rusk | 1 | 60 | 907 | Dec 2024 – Jun 2025 |
| Harrell-Colvin Unit G-3-285285 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk, Gas) | Lee | 1 | 51 | 20.3K | Sep 2018 – Mar 2023 |
| Harrell, M. G-8-111220 | Richey, Ray Management Co., Inc. only | Snow (Duffer) | Eastland | 1 | 49 | 29.2K | by Jan 1993 – Feb 1998 |
| Pardue-Harrell G-8-112549 | Texxol Operating Company, Inc. only | Snow (Duffer) | Eastland | 1 | 46 | 93.4K | by Jan 1993 – Nov 2019 |