| First National Waterflood Unit O-13-12417 | R2Q Operating LLC only | K-M-A | Wichita | 36 | 463K | 235K | Jan 1993 – Jul 2026 |
| First National Bank of Snyder O-11-67079 | Crossroads Operating, LLC only | Sharon Ridge (Clear Fork) | Scurry | 12 | 259K | 12.4K | Apr 1993 – Jul 2026 |
| First National Trust O-14-4807 | Courson Oil & Gas, Inc. only | Pshigoda (Douglas) | Ochiltree | 7 | 254K | 34.8K | Jan 1993 – Jul 2026 |
| First National Bank O-11-60457 | Unitex Oil & Gas, L.L.C. only | Sharon Ridge (Clear Fork) | Scurry | 8 | 198K | 21 | Jan 1993 – Jul 2026 |
| First National Trust O-14-6986 | Courson Oil & Gas, Inc. only | Wolfcreek (Douglas) | Ochiltree | 1 | 186K | 90.9K | May 1994 – Jul 2026 |
| First National Shallow A O-13-28362 | R2Q Operating LLC only | Wichita County Regular | Wichita | 35 | 175K | 21 | Jan 1993 – Jul 2026 |
| First National Co. -B- O-13-16135 | Ross, Dwight M. Drlg. Co., Inc. only | Bowers (Granite Wash) | — | 3 | 125K | 35 | Jan 1993 – Jul 2026 |
| First National Company O-13-4954 | Newport Operating, LLC only | Wichita County Regular | Wichita | 36 | 99.7K | 21 | Jan 1993 – Jul 2026 |
| First National Bank O-3-23014 | Sue-Ann Operating, L.C. only | Midfields (Betts, L.) | Matagorda | 2 | 74.5K | 98.5K | Jul 1996 – Jul 2004 |
| First National (Shallow) O-13-17833 | Newport Operating, LLC only | Wichita County Regular | Wichita | 28 | 59.9K | 21 | Jan 1993 – Jul 2026 |
| First National Bank-Jacksboro C O-13-29351 | Moriah Resources, Inc. only | Pursley (Caddo Lime) | Jack | 1 | 52.6K | 79.5K | Apr 1997 – May 2003 |
| First National Bank "C" O-13-16449 | Ross, Dwight M. Drlg. Co., Inc. only | Bowers (Granite Wash) | Montague | 2 | 50.8K | 35 | Jan 1993 – Jul 2026 |
| First National Shallow O-13-5594 | R2Q Operating LLC only | Wichita County Regular | — | 1 | 49.2K | 21 | Jan 1993 – Jul 2026 |
| First National O-13-6233 | Newport Operating, LLC only | K-M-A | Wichita | 19 | 41.2K | 16.1K | Jan 1993 – Jul 2026 |
| First National Co. -B- O-13-4376 | Ross, Dwight M. Drlg. Co., Inc. only | Bowers | — | 1 | 27K | 35 | Jan 1993 – Jul 2026 |
| First National Bank -A- O-13-16134 | Ross, Dwight M. Drlg. Co., Inc. only | Bowers (Granite Wash) | Montague | 6 | 24.1K | 0 | Jan 1993 – Jul 2026 |
| First National Bank #1 O-10-4700 | Teke Production LLC only | Pecos Valley (High Gravity) | Pecos | 3 | 23.2K | 146 | Jan 1993 – Jul 2026 |
| First National Bank of Snyder O-11-67023 | Trek Resources, Inc. only | Sharon Ridge (Clear Fork) | Scurry | 2 | 16.6K | 46 | Apr 1993 – Jul 2026 |
| First National Bank O-3-22479 | Sue-Ann Production Company only | Midfields, (Frio 8925) | Matagorda | 1 | 16K | 176K | Aug 1994 – Oct 1996 |
| First National Bank of Snyder O-11-62604 | Gray, Gordon Operator only | Sharon Ridge (Clear Fork) | Scurry | 2 | 11.5K | 20 | Jan 1993 – Jul 2026 |
| First National Co. B O-13-5926 | Newport Operating, LLC only | K-M-A | Wichita | 6 | 9.82K | 21 | Jan 1993 – Jul 2026 |
| First National Trust O-14-4495 | Courson Oil & Gas, Inc. only | Ellis Ranch (Cleveland, UP) | Ochiltree | 2 | 8.95K | 229K | Jan 1993 – May 2021 |
| First National Shallow AA O-13-28452 | R2Q Operating LLC only | Wichita County Regular | Wichita | 1 | 7.58K | 21 | Jan 1993 – Jul 2026 |
| First National "44"-Crenshaw O-13-20090 | Newport Operating, LLC only | Wichita County Regular | Wichita | 2 | 7.43K | 21 | Jan 1993 – Jun 2020 |
| First National Bank O-3-3263 | Orangefield Operating Corporatio only | Orange | — | 3 | 4.51K | 28 | Jan 1993 – Jul 2026 |
| First National Bank of Mission O-4-13746 | OXY USA Inc. only | Jay Simmons (6360) | Starr | 1 | 3.37K | 1.92K | Oct 2012 – Mar 2016 |
| First National Bank of Corsicana O-5-2212 | Thurston Texas Operating Co LLC only | Corsicana (Shallow) | Navarro | 15 | 3.05K | 25 | Jan 1993 – Jul 2026 |
| First National Bank O-11-5812 | Abraxas Production Corporation only | Sharon Ridge (2400) | Scurry | 7 | 2.98K | 3 | Jan 1993 – Jul 1993 |
| First National Bank of Snyder O-11-68982 | Apache Corporation only | Sharon Ridge (1700) | Scurry | 2 | 1.23K | 0 | Aug 2006 – Apr 2008 |
| First National Bank #2 O-10-4701 | Petrolia Group, L.L.C. only | Pecos Valley (High Gravity) | — | 2 | 645 | 14 | Jan 1993 – Jan 2015 |
| First National Bank of Snyder O-11-11743 | Murphy & Associates, Inc. only | Sharon Ridge (2400) | Scurry | 2 | 592 | 3 | Jan 1993 – Jul 1993 |
| First National Bank of Houston O-3-8833 | Amoco Production Company only | Houston, South (Oligocene) | Harris | 2 | 0 | 1 | Jan 1993 – Jul 1993 |
| First National Bank of Goliad O-2-4334 | Atasca Resources, Inc. only | Cabeza Creek, S. (Cook MT 5300) | — | 1 | 0 | 0 | Jan 1993 – Mar 1996 |
| First National Trust-Courson 571 G-14-226825 | Highmark Energy Operating, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 0 | 284K | Jan 2007 – Jul 2026 |
| First National Trust G-14-140234 | Courson Oil & Gas, Inc. only | Ellis Ranch (Cleveland, UP) | Ochiltree | 1 | 0 | 611K | Jan 1993 – Jul 2026 |
| First National Trust G-14-108008 | Courson Oil & Gas, Inc. only | Pan Petro (Cleveland) | Ochiltree | 1 | 0 | 705K | Jan 1993 – Jul 2026 |
| First National Trust G-14-83693 | Courson Oil & Gas, Inc. only | Dude Wilson (Cleveland) | Ochiltree | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| First National Bank-Jacksboro C G-13-190223 | North Texas Plugging, LLC only | Pursley (Caddo Lime) | Jack | 1 | 0 | 2.6K | May 2002 – Jul 2026 |
| First National Bank-Baldwin Unit G-6-217229 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 1.01M | Nov 2005 – Jul 2026 |
| First National Bank-Baldwin Unit G-6-212353 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 1.19M | May 2005 – Jul 2026 |
| First National Bank Baldwin Unit G-6-168031 | Sheridan Production Co III, LLC only | Carthage (Pettit, Lower Gas) | Panola | 1 | 0 | 604K | Jan 1998 – Sep 2024 |
| First National Baldwin Unit G-6-152799 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 790K | May 1994 – Jul 2026 |
| First National Baldwin Unit G-6-150589 | Eqv Operating LLC only | Carthage, S. (Travis Peak, Up.) | Panola | 1 | 0 | 52.2K | Mar 1994 – Jul 2026 |
| First National Baldwin Unit G-6-148258 | Eqv Operating LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 1.21M | Jan 1994 – Jul 2026 |
| First National Bank-Baldwin Unit G-6-98793 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 892K | Jan 1993 – Jul 2026 |
| First National Bank-Baldwin Unit G-6-89091 | Sheridan Production Co III, LLC only | Carthage (Cotton Valley) | Panola | 1 | 0 | 985K | Jan 1993 – Dec 2024 |
| First National Bank Co. A O-13-26449 | Ross, Dwight M. Drlg. Co., Inc. only | Montague County Regular | Montague | 1 | 0 | 0 | Jan 1993 – Nov 1998 |
| First National Bank of Mission G-4-155866 | OXY USA Inc. only | Alvarado (Vicksburg) | Starr | 1 | 0 | 1.26M | Sep 1995 – Feb 2016 |
| First National Bank of Mission G-4-128995 | Amax Oil & Gas Inc. only | Alvarado (8090 Q Sand) | Starr | 1 | 0 | 40.4K | Jan 1993 – Oct 1993 |
| First National Company -A- O-13-28759 | Bridwell Oil Co. only | Wichita County Regular | Wichita | 1 | 0 | 0 | Apr 1994 – Dec 2011 |