| G Klein Unit A O-2-9961 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 9 | 2.57M | 4.3M | Apr 2012 – Apr 2026 |
| G. Klein Unit D O-2-9724 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 5 | 1.76M | 2.92M | Nov 2011 – Apr 2026 |
| G Klein Unit E O-2-9774 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 4 | 1.46M | 2.02M | Mar 2012 – Apr 2026 |
| G Klein Unit B O-2-9771 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 4 | 1.3M | 2.03M | Dec 2011 – Apr 2026 |
| G Klein Unit C O-2-9755 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 2 | 1.05M | 1.63M | Dec 2011 – Feb 2026 |
| G Klein D-Weisch a Usw C O-2-11992 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 665K | 1.29M | Mar 2021 – Apr 2026 |
| G Klein D-Weisch a Usw A O-2-11981 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 649K | 1.6M | Mar 2021 – Apr 2026 |
| G Klein C D-Wsch a Ulw A O-2-12197 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 628K | 1.05M | Mar 2021 – Apr 2026 |
| G Klein C D-Wsch a Ulw B O-2-12194 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 611K | 1.27M | Mar 2021 – Apr 2026 |
| G Klein C D-Wsch a Ulw C O-2-12195 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 568K | 1.39M | Mar 2021 – Apr 2026 |
| G Klein D-Weisch a Usw B O-2-11982 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 453K | 823K | Mar 2021 – Apr 2026 |
| Kleine 01 G-2-269532 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 265K | 2.04M | Oct 2012 – May 2024 |
| Kleine 01 G-2-267704 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 206K | 1.38M | Jul 2011 – Aug 2024 |
| G Klein D-R McHn B Usw A O-2-13147 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 196K | 302K | Dec 2025 – Apr 2026 |
| G Klein D-E McHn B Ulw D O-2-13146 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 186K | 274K | Dec 2025 – Apr 2026 |
| G Klein E-R McHn B Usw E O-2-13133 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 185K | 256K | Dec 2025 – Apr 2026 |
| G Klein D-R McHn B Usw B O-2-13142 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 184K | 266K | Dec 2025 – Apr 2026 |
| Kleine 01 G-2-280649 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 175K | 1.22M | Nov 2015 – Dec 2025 |
| G Klein D-R McHn B Usw C O-2-13143 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 171K | 269K | Dec 2025 – Apr 2026 |
| G Klein E-McHn a Usw F O-2-13132 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | De Witt | 1 | 161K | 230K | Dec 2025 – Apr 2026 |
| Kleine 01 G-2-280653 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 161K | 1.22M | Nov 2015 – Dec 2025 |
| Kleine 01 G-2-280626 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 155K | 1.46M | Nov 2015 – Aug 2025 |
| Kleine 01 G-2-280624 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 126K | 1.04M | Nov 2015 – Mar 2022 |
| Klein, M. T. O-1-2793 | Texas Petroleum Investment Co. only | Darst Creek (Edwards) | Guadalupe | 7 | 126K | 47 | Jan 1993 – Apr 2026 |
| Kleine 01 G-2-280770 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 125K | 862K | Nov 2015 – Oct 2025 |
| Pace & Strange O-13-7962 | Brown, Darryl Operating L.L.C. only | Langston-Kleiner (Strawn) | Young | 2 | 119K | 74.6K | Jan 1993 – Apr 2026 |
| Kleine 01 G-2-280648 | Marathon Oil EF LLC only | De Witt (Eagle Ford Shale) | De Witt | 1 | 118K | 1.12M | Nov 2015 – Dec 2025 |
| Kleine-Hahn-Bau Usw A G-2-298435 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 98.4K | 1.99M | Jan 2024 – Apr 2026 |
| Kleine-Bau-Riedesel Ulw E G-2-296112 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 82.5K | 1.74M | Jan 2024 – Apr 2026 |
| Johnson Unit O-13-15561 | Don Peterson Company, LLC - only | Langston-Kleiner (Strawn) | Young | 13 | 80K | 21 | Jan 1993 – Mar 2026 |
| Kleine-Hahn-Bau Usw B G-2-297951 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 75.6K | 1.57M | Jan 2024 – Apr 2026 |
| Senkel-Hawkins O-13-22924 | Karper Oil & Gas Corporation only | Langston-Kleiner (Strawn) | Young | 4 | 68.9K | 35.3K | Jan 1993 – Feb 2026 |
| Kleine-Hahn-Bau Ulw C G-2-298155 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 67K | 1.33M | Jan 2024 – Apr 2026 |
| Kleine-Baumann Usw D G-2-298156 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 55.9K | 1.23M | Jan 2024 – Apr 2026 |
| Hinson O-13-8012 | Tomsha LLC only | Langston-Kleiner (Strawn) | Young | 2 | 49.7K | 9 | Jan 1993 – Dec 2020 |
| Senkel O-13-23651 | Karper Oil & Gas Corporation only | Langston-Kleiner (Strawn) | Young | 3 | 45.9K | 5.21K | Jun 1995 – Feb 2026 |
| Johnson, C. W. O-13-7975 | Tomsha LLC only | Langston-Kleiner (Strawn) | Young | 2 | 36.9K | 9 | Jan 1993 – Apr 2026 |
| Johnson Estate O-13-7969 | Tomsha LLC only | Langston-Kleiner (Strawn) | Young | 7 | 33.7K | 9 | Jan 1993 – Apr 2026 |
| Johnson, C. W. O-13-14192 | Tomsha LLC only | Langston-Kleiner (Miss.) | Young | 1 | 33.5K | 9 | Jan 1993 – Apr 2026 |
| Kleinschmidt O-3-25253 | Home Petroleum Corp. only | Giddings (Austin Chalk-3) | Lee | 1 | 27.9K | 0 | Oct 2008 – May 2012 |
| Loftin O-13-27128 | Perry Operating Inc. only | Langston-Kleiner (Strawn) | Young | 1 | 27.7K | 5.02K | Jan 1993 – Apr 2026 |
| Sallyn-Whitaker O-13-22277 | Brown, Darryl Operating L.L.C. only | Langston-Kleiner (Strawn) | Young | 1 | 27.4K | 76.4K | Jan 1993 – Apr 2026 |
| McKinley, J. P. O-13-7978 | Tomsha LLC only | Langston-Kleiner (Strawn) | Young | 3 | 25.5K | 8 | Jan 1993 – Apr 2026 |
| Whitaker O-13-28487 | Brown, Darryl Operating L.L.C. only | Langston-Kleiner (Strawn) | Young | 1 | 25.2K | 82.4K | Jan 1993 – Apr 2026 |
| Gamble O-13-18900 | Peterson, Don Company only | Langston-Kleiner (Strawn) | Young | 1 | 23.1K | 19 | Jan 1993 – Dec 2012 |
| Klein G-3-134057 | Zinn Petroleum Co. only | Clodine, West (5300) | Fort Bend | 1 | 19.8K | 1.02M | Jan 1993 – Apr 1999 |
| Loftin O-13-23331 | Borderline Operating Corp. only | Langston-Kleiner (Strawn) | Young | 3 | 16.7K | 683 | Jan 1993 – Sep 1999 |
| Kleinhans O-13-22213 | Walter H. Husfeld Oil Co LLC only | Montague County Regular | Montague | 1 | 16.7K | 41.5K | Jan 1993 – Aug 2025 |
| McCracken O-13-21389 | 2MC Consulting LLC only | Langston-Kleiner (Strawn) | Young | 1 | 15.8K | 3.23K | Jan 1993 – Apr 2026 |
| Langston, C. W. -A- O-13-7976 | Tomsha LLC only | Langston-Kleiner (Strawn) | Young | 4 | 15K | 9 | Jan 1993 – Apr 2026 |