| Flanagan G-6-226559 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 17.5K | 804K | Mar 2007 – Apr 2026 |
| Flanagan Heirs G-6-242808 | Shelby Operating Company only | Bethany (Travis Peak Cons.) | Panola | 1 | 16.4K | 445K | Oct 2008 – Apr 2026 |
| Flanagan G-6-239471 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 14.9K | 1.07M | Jul 2008 – Dec 2017 |
| Flanagan G-6-237854 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 7.76K | 790K | Jan 2008 – Jan 2016 |
| Flanagan, M.T. "C" et al G/U G-6-107813 | Apache Corporation only | Danville (Travis Peak Cons.) | Gregg | 1 | 6.09K | 274K | Jan 1993 – Aug 1999 |
| Flanagan G-6-243276 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 5.93K | 1.02M | Sep 2008 – Oct 2018 |
| Morrison-Flanagan G-3-222291 | Allied-Gulf Energy, LLC only | Ulrich (Yegua 2A) | Harris | 1 | 5.72K | 246K | Aug 2006 – Nov 2019 |
| Flanagan Heirs G-6-242807 | Shelby Operating Company only | Bethany (Travis Peak Cons.) | Panola | 1 | 5.7K | 1.05M | Oct 2008 – Apr 2026 |
| Flanagan, M.T. "C" et al G/U G-6-149468 | Apache Corporation only | Danville (Travis Peak Cons.) | Gregg | 1 | 5.3K | 140K | Mar 1994 – Jul 1997 |
| Flanagan G-6-235411 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 5.14K | 1.16M | Mar 2008 – Dec 2025 |
| Flanagan G-6-241340 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 3.76K | 1.03M | Sep 2008 – May 2017 |
| Flanagan G-6-239470 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 3.09K | 706K | Jul 2008 – May 2025 |
| Flanagan G-6-128174 | Samson Lone Star, LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 2.94K | 296K | Jan 1993 – Sep 2006 |
| Flanagan G-6-234412 | Eqv Operating LLC only | Minden (Cotton Valley Cons.) | Rusk | 1 | 2.36K | 1.13M | Aug 2007 – Apr 2026 |
| Flanagan G-6-245652 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 2.07K | 288K | Jan 2009 – May 2020 |
| Flanagan G-6-202568 | Eqv Operating LLC only | Minden (Cotton Valley Cons.) | Rusk | 1 | 1.41K | 934K | Oct 2003 – Apr 2026 |
| Flanagan Heirs G-6-235929 | Shelby Operating Company only | Bethany (Travis Peak Cons.) | Panola | 1 | 1.29K | 445K | Mar 2008 – Mar 2026 |
| Flanagan G-6-239469 | TGNR East Texas II LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 1.17K | 692K | Jun 2008 – Apr 2015 |
| Flanagan G-6-242310 | Eqv Operating LLC only | Minden (Cotton Valley Cons.) | Rusk | 1 | 1.02K | 549K | Dec 2007 – May 2015 |
| Flanagan G-6-154007 | Williams, Clayton Energy, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 936 | 69.7K | Mar 1995 – Sep 1999 |
| Flanagan, O.E. G-6-240439 | Buffco Production Inc. only | Henderson, E. (Cotton Valley) | Rusk | 1 | 894 | 462K | Jun 2008 – Apr 2026 |
| Flanagan G-6-123485 | Robbins Petroleum Corp. only | Danville (Travis Peak) | Gregg | 1 | 509 | 20.9K | Jan 1993 – Nov 1993 |
| Flanagan G-6-123860 | Berkshire Operating, LLC only | Waskom (Mystic Sand) | Harrison | 1 | 368 | 487K | Jan 1993 – Jan 2011 |
| Flanagan G-13-160989 | Stephens & Johnson Operating Co. only | Boonsville (Bend Congl., Gas) | Wise | 1 | 239 | 176K | Nov 1996 – Apr 2020 |
| Flanagan G-6-148126 | Sonat Exploration Company -Tyler only | Danville (Hill) | Gregg | 1 | 228 | 9.78K | Dec 1993 – Mar 1995 |
| Flanagan "10A" G-11-249785 | Lynx Operating Co., Inc. only | Harris (Yates) | Gaines | 1 | 201 | 20.6K | May 2009 – Dec 2015 |
| Flanagan G-6-175002 | TGNR East Texas II LLC only | Danville (Rodessa) | Gregg | 1 | 192 | 21.5K | Oct 1999 – Mar 2007 |
| Flanagan "10" G-11-249024 | Power Upp Midland 1 LLC only | Harris (Yates) | Gaines | 1 | 139 | 319K | Feb 2009 – Dec 2015 |
| Flanagan "10" G-11-249037 | Lynx Operating Co., Inc. only | Harris (Yates) | Gaines | 1 | 131 | 97.8K | Jan 2009 – Dec 2015 |
| Flanagan G-13-93751 | Stephens & Johnson Operating Co. only | Boonsville (Bend Congl., Gas) | Wise | 1 | 125 | 101K | Jan 1993 – Jan 2000 |
| Flanagan "10" G-11-249039 | Power Upp Midland 1 LLC only | Harris (Yates) | Gaines | 1 | 122 | 274K | Jan 2009 – Dec 2015 |
| Flanagan "10" G-11-249036 | Lynx Operating Co., Inc. only | Harris (Yates) | Gaines | 1 | 118 | 131K | Feb 2009 – Dec 2015 |
| Flanagan "10" G-11-249025 | Lynx Operating Co., Inc. only | Harris (Yates) | Gaines | 1 | 118 | 200K | Mar 2009 – Dec 2015 |
| Flanagan "9" G-11-249031 | Lynx Operating Co., Inc. only | Harris (Yates) | Gaines | 1 | 115 | 241K | Jan 2009 – Dec 2015 |
| Flanagan "9" G-11-249034 | Lynx Operating Co., Inc. only | Harris (Yates) | Gaines | 1 | 113 | 154K | Mar 2009 – Dec 2015 |
| Flanagan "10" G-11-249029 | Lynx Operating Co., Inc. only | Harris (Yates) | Gaines | 1 | 112 | 232K | Jan 2009 – Dec 2015 |
| Flanagan "10A" G-11-256554 | Lynx Operating Co., Inc. only | Newsom (Yates) | Gaines | 1 | 78 | 166K | Mar 2010 – Nov 2015 |
| Flanagan "9" G-11-256552 | Lynx Operating Co., Inc. only | Newsom (Yates) | Gaines | 1 | 68 | 156K | Mar 2010 – Dec 2015 |
| Flanagan "10A" G-11-256553 | Lynx Operating Co., Inc. only | Newsom (Yates) | Gaines | 1 | 60 | 152K | Mar 2010 – Dec 2015 |
| Flanagan G-11-258358 | Lynx Operating Co., Inc. only | Newsom (Yates) | Gaines | 1 | 49 | 114K | Oct 2010 – Dec 2015 |
| Flanagan "10A" G-11-256613 | Lynx Operating Co., Inc. only | Newsom (Yates) | Gaines | 1 | 39 | 300K | Mar 2010 – Dec 2015 |
| Flanagan G-13-187197 | Enervest Operating, L.L.C. only | Newark, East (Barnett Shale) | Denton | 1 | 31 | 272K | Jan 2002 – Aug 2016 |
| Flanagan, M. T. et al "C" G/U G-6-106729 | Apache Corporation only | Oak Hill (Cotton Valley) | Gregg | 1 | 16 | 0 | Dec 1995 – Dec 1995 |
| Flanagan G-14-213774 | Hunter Oil Corporation only | Spoony (Brown Dolomite) | Hansford | 1 | 0 | 112K | Dec 2005 – Apr 2026 |
| Flanagan G-6-154468 | Big Run Production Company only | Bethany (Paluxy-Tiller) | Panola | 1 | 0 | 192K | Dec 1994 – Oct 2020 |
| Flanagan-Kinnamon G-2-90978 | Al-TX Operating Inc. only | Schulz (Edwards) | Live Oak | 1 | 0 | 0 | — |
| Flanagan-Jernigan HV Unit A G-6-290545 | TGNR East Texas II LLC only | Carthage (Haynesville Shale) | Panola | 1 | 0 | 12M | Oct 2020 – Apr 2026 |
| Flanagan-Jernigan HV Unit B G-6-290546 | TGNR East Texas II LLC only | Carthage (Haynesville Shale) | Panola | 1 | 0 | 8.46M | Oct 2020 – Apr 2026 |
| Flanagan-Jernigan HV Unit C G-6-290661 | TGNR East Texas II LLC only | Carthage (Haynesville Shale) | Panola | 1 | 0 | 11.2M | Oct 2020 – Apr 2026 |
| Flanagan-Jernigan HV Unit D G-6-290662 | TGNR East Texas II LLC only | Carthage (Haynesville Shale) | Panola | 1 | 0 | 9.61M | Oct 2020 – Apr 2026 |