| Buchanan G-13-215324 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 27.6K | 3.16M | Dec 2005 – Feb 2026 |
| Buchanan G-13-237674 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 27.2K | 5.11M | Jan 2008 – Mar 2026 |
| Buchanan, J. R. GU G-13-252691 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 23.3K | 2.67M | May 2009 – Aug 2026 |
| Buchanan Gas Unit G-4-203837 | Wagner Oil Company only | Donna (Harrell) | Hidalgo | 1 | 22K | 1.98M | Jun 2004 – Aug 2026 |
| Buchanan G-13-237676 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 18.8K | 1.78M | Jan 2008 – Mar 2026 |
| Buchanan, J. R. GU G-13-249464 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 13.1K | 1.38M | May 2009 – Aug 2026 |
| Buchanan Gas Unit G-4-206625 | Wagner Oil Company only | Donna (Frio 5500) | Hidalgo | 1 | 12.4K | 817K | Jan 2005 – Aug 2026 |
| Buchanan G-13-252588 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 12.4K | 2.07M | Jul 2009 – Mar 2026 |
| Buchanan, J. R. GU G-13-252692 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 11K | 1.29M | May 2009 – Aug 2026 |
| Buchanan Gas Unit G-4-197064 | BP America Production Company only | Donna (6940) | Hidalgo | 1 | 9.91K | 244K | Sep 2003 – Jan 2004 |
| Buchanan Gas Unit G-4-244490 | Wagner Oil Company only | Donna (Harrell) | Hidalgo | 1 | 9.12K | 378K | Nov 2008 – Aug 2026 |
| Buchanan, J. R. GU G-13-252776 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 8.5K | 1.56M | Dec 2009 – Aug 2026 |
| Buchanan Gas Unit G-4-223972 | BP America Production Company only | Donna (Swallow) | Hidalgo | 1 | 7.02K | 55.3K | Jun 2006 – Feb 2007 |
| Buchanan, J. R. GU G-13-252300 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 6.37K | 1.57M | Nov 2009 – Aug 2026 |
| Buchanan Gas Unit G-4-206651 | BP America Production Company only | Donna (6600) | Hidalgo | 1 | 6.15K | 452K | Dec 2004 – May 2006 |
| Buchanan Unit G-4-10123 | Wagner Oil Company only | Donna (Armstrong) | Hidalgo | 1 | 5.54K | 1.71M | by Jan 1993 – Aug 2026 |
| Buchanan, R. T. et al "A" G-2-139613 | Heartland Production, Inc. only | Helen Gohlke (5700) | Victoria | 1 | 4.97K | 838K | by Jan 1993 – Aug 2008 |
| Buchanan-Wheeler G-3-154467 | Westport Oil and Gas Company, LP only | Nona Mills (-J-) | Hardin | 1 | 3.17K | 192K | Apr 1995 – Feb 2002 |
| Buchanan G-13-252583 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 3.12K | 931K | Jul 2009 – Feb 2026 |
| Buchanan B G-13-251549 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Erath | 1 | 3.11K | 457K | May 2008 – Oct 2016 |
| Buchanan Gas Unit G-6-222659 | Armor Resources LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 2.82K | 33.6K | Sep 2006 – Mar 2018 |
| Buchanan Gas Unit G-4-244209 | BP America Production Company only | Donna (Sweeney, Lower) | Hidalgo | 1 | 2.75K | 50.6K | Aug 2008 – Nov 2008 |
| Cummins-Buchanan G-13-224943 | Incendium Resources LLC only | Newark, East (Barnett Shale) | Parker | 1 | 2.4K | 327K | Jan 2007 – Aug 2026 |
| Buchanan-Wheeler G-3-139145 | Mobil Producing TX. & N.M. Inc. only | Nona Mills (-K-) | Hardin | 1 | 2.14K | 146K | by Jan 1993 – Mar 1995 |
| Buchanan Gas Unit G-4-192697 | BP America Production Company only | Donna (7460) | Hidalgo | 1 | 1.5K | 170K | Jan 2003 – Nov 2004 |
| Buchanan Gas Unit G-4-193731 | BP America Production Company only | Donna (7730) | Hidalgo | 1 | 1.49K | 354K | Feb 2003 – Aug 2003 |
| Buchanan Gas Unit G-4-192755 | BP America Production Company only | Donna (Jancik) | Hidalgo | 1 | 1.36K | 310K | Jan 2003 – May 2003 |
| Buchanan Gas Unit G-4-218286 | BP America Production Company only | Donna (Schuster) | Hidalgo | 1 | 1.34K | 105K | Mar 2006 – Aug 2006 |
| Buchanan G-13-252585 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 1.29K | 185K | Jul 2009 – Jul 2011 |
| J.R. Buchanan GU G-13-253078 | Devon Energy Production Co, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 1.01K | 174K | Nov 2009 – May 2013 |
| Buchanan G-13-142164 | Cooper Oil & Gas, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 926 | 736K | by Jan 1993 – Aug 2026 |
| Buchanan Gas Unit G-4-144595 | BP America Production Company only | Donna (6600) | Hidalgo | 1 | 800 | 539K | Mar 1993 – Aug 1996 |
| Buchanan G-13-28938 | Cooper Oil & Gas, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 744 | 413K | by Jan 1993 – May 2020 |
| Buchanan Gas Unit G-4-222571 | BP America Production Company only | Donna (Morin) | Hidalgo | 1 | 717 | 85.2K | Sep 2006 – Nov 2007 |
| Buchanan Gas Unit G-4-196148 | BP America Production Company only | Donna (6940) | Hidalgo | 1 | 621 | 28.8K | Jul 2003 – Aug 2003 |
| Buchanan, J. R. Gas Unit G-13-140526 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 448 | 811K | by Jan 1993 – Aug 2026 |
| Buchanan G-13-73474 | Cooper Oil & Gas, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 282 | 463K | by Jan 1993 – Aug 2026 |
| Buchanan, J. R. Gas Unit G-13-29213 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 176 | 442K | by Jan 1993 – Aug 2026 |
| Buchanan G-13-273956 | FX Energy Operating, LLC only | KRS (Marble Falls) | Palo Pinto | 1 | 173 | 39.6K | Jun 2014 – Jan 2019 |
| Buchanan Gas Unit G-4-197224 | BP America Production Company only | Donna (6850) | Hidalgo | 1 | 154 | 20K | Sep 2003 – Nov 2003 |
| Buchanan Gas Unit G-5-198111 | Hilcorp Energy Company only | Bald Prairie (CV Consolidated) | Robertson | 1 | 115 | 918K | Sep 2003 – Aug 2026 |
| Buchanan, J. R. Gas Unit G-13-74382 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 113 | 207K | by Jan 1993 – Aug 2026 |
| Buchanan Gas Unit G-5-202109 | Hilcorp Energy Company only | Bald Prairie (CV Consolidated) | Robertson | 1 | 96 | 521K | May 2004 – Aug 2026 |
| Buchanan Gas Unit G-5-216858 | Hilcorp Energy Company only | Bald Prairie (CV Consolidated) | Robertson | 1 | 19 | 853K | Aug 2005 – Aug 2026 |
| Buchanan G-13-189226 | Quicksilver Resources Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 6 | 207K | Jun 2002 – Sep 2012 |
| Buchanan G-13-189227 | Quicksilver Resources Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 4 | 168K | Jun 2002 – Sep 2010 |
| Buchanan G-13-192013 | Quicksilver Resources Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 4 | 228K | Sep 2002 – Jan 2011 |
| Buchanan G-13-190798 | Quicksilver Resources Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 3 | 188K | Aug 2002 – Jan 2012 |
| Buchanan G-13-192012 | Quicksilver Resources Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 3 | 155K | Sep 2002 – May 2012 |
| Buchanan Gas Unit G-4-196933 | BP America Production Company only | Donna (Jancik) | Hidalgo | 1 | 1 | 5.59K | Aug 2003 – Sep 2003 |