| Lake Trammel Unit O-8-8712 | Grayrock Energy II, LLC only | Lake Trammel, W. (Canyon) | Nolan | 203 | 3.85M | 2.09M | Jan 1993 – Jul 2026 |
| Southwest Nena Lucia Unit O-8-8844 | Citation Oil & Gas Corp. only | Nena Lucia (Strawn Reef) | Nolan | 148 | 3.44M | 17.3M | Jan 1993 – Jul 2026 |
| Texaco Fee O-8-28534 | Sojourner Drilling Corporation only | Mulberry Canyon (Cisco) | Nolan | 13 | 1.59M | 177K | Sep 1998 – Jul 2026 |
| North Nena Lucia Unit O-8-8749 | Citation Oil & Gas Corp. only | Nena Lucia (Strawn Reef) | Nolan | 107 | 1.27M | 9.11M | Jan 1993 – Jul 2026 |
| Hanks, Billie -A- O-8-2940 | Goodrock Natural Resources, LLC only | Hylton, NW. (Cambrian) | Nolan | 11 | 974K | 306K | Jan 1993 – Jul 2026 |
| Boyd,c.e., Etal Palo Pinto Unit O-8-10135 | Clear Fork, Incorporated only | Evb (Palo Pinto) | Nolan | 24 | 792K | 589K | Jan 1993 – Jul 2026 |
| Boyd, (Caddo Conglomerate) Unit O-8-27986 | Clear Fork, Incorporated only | Evb, S. (Caddo Conglomerate) | Nolan | 8 | 749K | 880K | Apr 1996 – Jul 2026 |
| Joe Young O-8-30389 | Scout Energy Management LLC only | Hardrock (King Sand) | Nolan | 9 | 695K | 84.3K | Aug 2009 – Jul 2026 |
| Evb (Canyon Sand) Unit O-8-30532 | Clear Fork, Incorporated only | Evb (4800 Canyon Sand) | Nolan | 17 | 601K | 148K | May 2010 – Jul 2026 |
| E. S. H. O-8-27132 | Clear Fork, Incorporated only | Maryneal (Strawn) | Nolan | 6 | 494K | 375K | Mar 1994 – Jul 2026 |
| Price "B" O-8-26554 | Daylight Petroleum LLC only | JMM (Ellenburger) | Nolan | 1 | 489K | 347K | Jan 1993 – Jul 2026 |
| Jordan, R. H. O-8-2942 | Goodrock Natural Resources, LLC only | Hylton, NW. (Cambrian) | Nolan | 8 | 483K | 129K | Jan 1993 – Jul 2026 |
| Hanks, Billie -A- O-8-2945 | Goodrock Natural Resources, LLC only | Hylton, NW. (Canyon Reef) | Nolan | 13 | 464K | 173K | Jan 1993 – Jul 2026 |
| Arledge O-8-30586 | Daylight Petroleum LLC only | JMM (Ellenburger) | Nolan | 4 | 444K | 449K | Aug 2010 – Jul 2026 |
| Michaels O-8-29555 | Golden Oil and Ranch, LLC only | J. A. M. (Reef, Lower) | Nolan | 1 | 443K | 97.9K | Feb 2005 – Jul 2026 |
| Frymire Waterflood Unit O-8-26877 | Grayrock Energy II, LLC only | Lake Trammel, W. (Canyon) | Nolan | 21 | 431K | 99.9K | May 1993 – Jul 2026 |
| Davis O-8-27979 | Goodrock Natural Resources, LLC only | R.E.H. (Strawn) | Nolan | 5 | 391K | 108K | Sep 1996 – Jun 2025 |
| Price "E" O-8-26904 | Daylight Petroleum LLC only | JMM (Ellenburger) | Nolan | 2 | 370K | 244K | May 1993 – Jul 2026 |
| Stewman Ranch O-8-26789 | Enrich Oil Corporation only | Big Silver (Ellenburger) | Nolan | 4 | 370K | 290K | Jan 1993 – May 2003 |
| Harris, B. K. O-8-26640 | Lakeshore Operating, LLC only | Lake Trammel, S. (5150) | Nolan | 4 | 364K | 987K | Jan 1993 – Jul 2026 |
| Boyd O-8-32113 | Scout Energy Management LLC only | Hardrock (King Sand) | Nolan | 3 | 358K | 29.6K | Mar 2017 – Jul 2026 |
| White Hat Ranch O-8-31996 | Gungoll, Carl E. Exploration LLC only | White Hat (Ellenburger) | Nolan | 9 | 357K | 222K | May 2016 – Jul 2026 |
| Joe Young O-8-30048 | Scout Energy Management LLC only | Monroe-Young (Strawn) | Nolan | 18 | 315K | 271K | Mar 2008 – Jul 2026 |
| Monroe, Lorenzo O-8-19447 | Lakeshore Operating, LLC only | Lake Trammel, S. (5150) | Nolan | 5 | 313K | 241K | Jan 1993 – Jul 2026 |
| Brown O-8-30935 | Scout Energy Management LLC only | Harp (Strawn) | Nolan | 5 | 295K | 146K | Feb 2012 – Jul 2026 |
| Boyd, C. E. O-8-28197 | Clear Fork, Incorporated only | Evb (Cisco, Middle) | Nolan | 2 | 294K | 8.41K | Dec 1996 – Jul 2026 |
| Whiteaker, C.M. O-8-26548 | Unit Petroleum Company only | Blackwell, North (Ellenburger) | Nolan | 6 | 283K | 86.6K | Jan 1993 – May 2007 |
| Washam Unit O-8-30664 | Extex Operating Company only | Auld (Cisco Sand) | Nolan | 1 | 280K | 0 | Feb 2011 – Jul 2026 |
| Boyd, C. E. "41" O-8-29741 | Clear Fork, Incorporated only | Evb (4800 Canyon Sand) | Nolan | 7 | 275K | 509K | Jun 2006 – Jul 2010 |
| Petty, R. R. O-8-8723 | Goodrock Natural Resources, LLC only | E. A. (Cambrian Sand) | Nolan | 7 | 261K | 60.3K | Jan 1993 – Jul 2026 |
| Smith, Cecil L. O-8-27816 | Clear Fork, Incorporated only | Lazarus (Strawn) | Nolan | 3 | 256K | 968K | Mar 1996 – Jul 2026 |
| Group 4000 Unit "A" O-8-25971 | Winchester Energy, LLC only | Group (4000) | Nolan | 16 | 249K | 167K | Jan 1993 – Jul 2026 |
| Robtann O-8-26659 | Scout Energy Management LLC only | Sprague (Cisco) | Nolan | 2 | 245K | 8.63K | Jan 1993 – Jul 2026 |
| Jessie Little 5 O-8-32021 | Scout Energy Management LLC only | White Flat | Nolan | 2 | 243K | 237K | Sep 2014 – Jul 2026 |
| Chinquapin Strawn Unit O-8-14911 | Pendragon Oil Co. only | Chinquapin (Strawn) | Nolan | 18 | 239K | 163K | Jan 1993 – Jul 2026 |
| Suggs-Hickman (Jennings) Unit O-8-25878 | Atasca Resources, Inc. only | Suggs-Hickman (Jennings) | Nolan | 20 | 239K | 43.3K | Jan 1993 – Jul 2026 |
| Bradford O-8-23542 | Daylight Petroleum LLC only | Amy-Michele (Ellen.) | Nolan | 1 | 229K | 21 | Jan 1993 – Feb 2024 |
| Liberty Unit O-10-55064 | Extex Operating Company only | Garden City, S. (Wolfcamp) | Nolan | 1 | 222K | 544K | Aug 2020 – Jul 2026 |
| Harris, B.K. "D" O-8-26976 | Katsco Energy, Inc. only | Lake Trammel, S. (5150) | Nolan | 3 | 218K | 281K | Aug 1993 – Oct 2024 |
| South Lake Trammel Unit O-8-11281 | Grayrock Energy II, LLC only | Lake Trammel, S. (Canyon) | Nolan | 54 | 217K | 465K | Jan 1993 – Jul 2026 |
| Ludlum Unit O-8-30398 | Extex Operating Company only | Auld (Cisco Sand) | Nolan | 2 | 217K | 0 | Jul 2009 – Jul 2026 |
| Justice Unit O-10-58097 | Extex Operating Company only | Garden City, S. (Wolfcamp) | Nolan | 1 | 206K | 838K | Aug 2022 – Jul 2026 |
| White Hat Ranch O-8-32357 | Winchester Energy, LLC only | Bast (Strawn) | Nolan | 6 | 202K | 117K | Sep 2017 – Jul 2026 |
| Ludlum South Unit O-8-30493 | Extex Operating Company only | Auld (Cisco Sand) | Nolan | 1 | 201K | 0 | Jan 2010 – Jul 2026 |
| Beall B O-8-31113 | Extex Operating Company only | Hollins (Penn. Sand) | Nolan | 9 | 199K | 242K | Nov 2012 – Jul 2026 |
| Boyd, C. E. O-8-27254 | Clear Fork, Incorporated only | Evb, S. (Caddo Conglomerate) | Nolan | 5 | 191K | 167K | Aug 1994 – Oct 2002 |
| Morris State Unit O-8-30675 | Extex Operating Company only | Auld (Cisco Sand) | Nolan | 1 | 190K | 0 | Feb 2011 – Jul 2026 |
| Republic Unit O-10-57706 | Extex Operating Company only | Garden City, S. (Wolfcamp) | Nolan | 1 | 190K | 648K | Aug 2022 – Jul 2026 |
| Devon O-8-30927 | Extex Operating Company only | Nena Lucia, E. (Miss.) | Nolan | 3 | 189K | 539K | Dec 2010 – Jul 2026 |
| Jordan Ranch "A" O-8-19509 | Cockrell Production Co., Inc. only | Suggs (Ellenburger) | Nolan | 3 | 189K | 335K | Jan 1993 – Aug 2017 |