| Haveman Trust 01 - H01 D G-2-292696 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 263K | 3.15M | May 2022 – Aug 2026 |
| Holland, W. W. O-7-6954 | Long Trusts, The only | East Texas | Gregg | 8 | 262K | 76.1K | by Jan 1993 – Jul 2026 |
| Maltsberger-DB Trust G-1-297318 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 262K | 1.07M | Oct 2018 – Aug 2026 |
| Douglas Mineral Trust -G- O-13-14991 | R2Q Operating LLC only | Cash (Strawn 3820) | Wichita | 14 | 261K | 67 | by Jan 1993 – Aug 2026 |
| Guaranty Title & Trust G-4-186953 | Pine Island Operating, L.L.C. only | Corpus Christi, W (Consolidated) | Nueces | 1 | 259K | 5.78M | Oct 2001 – Aug 2026 |
| Brown Trust-SS Alloc M O-1-19215 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 258K | 333K | Apr 2018 – Aug 2026 |
| Boston Texas Land & Trust G-4-193892 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 258K | 7.97M | Mar 2003 – Aug 2026 |
| First National Trust O-14-4807 | Courson Oil & Gas, Inc. only | Pshigoda (Douglas) | Ochiltree | 7 | 255K | 35.3K | by Jan 1993 – Aug 2026 |
| Howell Realty Trust Unit G-6-225033 | Zarvona Energy LLC only | Brookeland (Austin Chalk, 8800) | Tyler | 1 | 254K | 4.69M | Nov 2006 – Jul 2017 |
| Shanafelt Trust O-13-27745 | Western Chief Operating, L.L.C. only | Box (Mississippi) | Jack | 1 | 254K | 171K | by Jan 1993 – Aug 2024 |
| Lott Trust O-11-66761 | Patterson Petroleum, Inc. only | Happy (Spraberry Lime) | Garza | 2 | 254K | 54.8K | by Jan 1993 – Aug 1999 |
| Rusty Crane 604 O-11-70698 | Riley Permian Operating Co, LLC only | Platang (San Andres) | Yoakum | 2 | 253K | 513K | Jan 2018 – Aug 2026 |
| S & H Trust Unit O-1-17189 | Murphy Expl. & Prod. Co. - USA only | Eagleville (Eagle Ford-1) | Atascosa | 2 | 251K | 382K | Jul 2014 – Aug 2026 |
| Welch Trust 8 O-9-18982 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Reagan | 4 | 250K | 885K | Jan 2015 – Aug 2026 |
| Hamilton Trust A-405 G-2-277479 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 250K | 1.08M | May 2015 – Jun 2026 |
| Rancho Grande Trust Unit No. 1 G-2-294460 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 248K | 1.02M | Feb 2017 – Aug 2026 |
| Wheat Trust 1-73 Lov Unit 2 O-10-45546 | Pdeh LLC only | Phantom (Wolfcamp) | Loving | 2 | 248K | 581K | Apr 2015 – Aug 2026 |
| Haveman Trust 01 G-2-289836 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 247K | 2.76M | Mar 2020 – Aug 2026 |
| Haveman Trust 01 - H01 C G-2-292717 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 244K | 2.89M | May 2022 – Aug 2026 |
| Knutson Trust 14 O-14-7956 | Burk Royalty Co., Ltd. only | Greene Ranch (Atoka) | Hansford | 2 | 244K | 599K | Mar 2009 – Aug 2026 |
| Carmody Trust BD A O-2-12514 | Devon Energy Production Co, L.P. only | Eagleville (Eagle Ford-2) | Karnes | 1 | 244K | 318K | Nov 2022 – Aug 2026 |
| Trust State 242 O-10-48640 | Noble Energy Inc only | Hoefs T-K (Wolfcamp) | Reeves | 1 | 243K | 240K | Apr 2017 – Aug 2026 |
| Lindsey Trust "109-A" O-11-67775 | Rim Operating, Inc. only | Marholl (Siluro-Devonian) | Dawson | 1 | 243K | 0 | Sep 1997 – May 2007 |
| Lavelle-Smith Unit O-8-28847 | Pony Express Corporate Trust only | Lake Coleman (Morris 2750) | Coleman | 17 | 241K | 72.2K | Sep 2000 – Aug 2024 |
| Boston Texas Land & Trust G-4-192177 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 241K | 5.91M | Dec 2002 – Aug 2012 |
| Barnett Trust 90-TTT-01 Wfa Nwnw O-10-61217 | Matador Production Company only | Phantom (Wolfcamp) | Loving | 1 | 241K | 1.59M | Oct 2023 – Aug 2026 |
| Rancho Grande Trust-Kowalik SA G-2-295047 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 238K | 1.03M | Jun 2023 – Aug 2026 |
| Hamilton Trust Unit C G-2-270903 | Burlington Resources O & G Co LP only | De Witt (Eagle Ford Shale) | De Witt | 1 | 238K | 1.46M | Jan 2014 – Aug 2026 |
| Eyhorn-Bego Trust (SA) G-2-272590 | Repsol Oil & Gas USA, LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 236K | 2.23M | Feb 2014 – Aug 2026 |
| Boyd Family Trust 01 G-2-270126 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Live Oak | 1 | 236K | 1.93M | Apr 2013 – Aug 2026 |
| Haveman Trust 01 G-2-288863 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 235K | 3.02M | Mar 2020 – Aug 2026 |
| Bouldin Trust 2 O-1-16745 | Auterra Operating, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 4 | 233K | 107K | Jun 2012 – Aug 2026 |
| Baker Family Trust G-2-288729 | Burlington Resources O & G Co LP only | Sugarkane (Austin Chalk) | Live Oak | 1 | 233K | 2.31M | Mar 2020 – Aug 2026 |
| Boyd Family Trust 01 G-2-264351 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Live Oak | 1 | 232K | 1.68M | Jun 2011 – Aug 2026 |
| Cartwright "Q" O-13-9078 | Pony Express Corporate Trust only | Texoma, East (Tannehill) | Knox | 16 | 231K | 21 | by Jan 1993 – Mar 2023 |
| Baker Family Trust G-2-288887 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Live Oak | 1 | 228K | 2.09M | Mar 2020 – Aug 2026 |
| Brown Trust A1 O-1-20730 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 228K | 221K | May 2022 – Aug 2026 |
| Carmody Trust BD B O-2-12522 | Devon Energy Production Co, L.P. only | Eagleville (Eagle Ford-2) | Karnes | 1 | 226K | 249K | Nov 2022 – Aug 2026 |
| Wheat Trust 1-73 Lov Unit 1 O-10-45883 | Pdeh LLC only | Phantom (Wolfcamp) | Loving | 2 | 220K | 613K | May 2015 – Jan 2026 |
| Hankins, Mari-Alyce Trust O-11-65032 | Burk Royalty Co., Ltd. only | Smyer, W. (Wichita Albany) | Hockley | 2 | 219K | 84.6K | by Jan 1993 – Nov 2024 |
| Haveman Trust 01 G-2-271495 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 219K | 1.63M | Oct 2013 – Aug 2026 |
| Barnett Trust 90-TTT-01 WFB Senw O-10-61881 | Matador Production Company only | Phantom (Wolfcamp) | Loving | 1 | 218K | 3.95M | Oct 2023 – Aug 2026 |
| Brown-Trusts G-1-277931 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 216K | 3.74M | Dec 2015 – Aug 2026 |
| Brown Trust A3 O-1-20732 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 216K | 358K | May 2022 – Aug 2026 |
| Hall Trust 20 O-10-41039 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 4 | 215K | 530K | Jan 2011 – Aug 2026 |
| Patterson Trust 22 O-10-44011 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Howard | 4 | 215K | 842K | Jan 2013 – Aug 2026 |
| Haveman Trust 01 G-2-289824 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Karnes | 1 | 214K | 2.61M | Mar 2020 – Aug 2026 |
| Mills-McGee Trust Unit O-3-23306 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Milam | 1 | 214K | 188K | May 1997 – Aug 2026 |
| Carmody Trust "D" O-2-9856 | Devon Energy Production Co, L.P. only | Eagleville (Eagle Ford-2) | Karnes | 2 | 213K | 179K | Apr 2012 – Jun 2025 |
| Reiman Family Trust Unit A O-2-11360 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Karnes | 1 | 213K | 821K | Jan 2016 – May 2022 |