| Swanson-Meek Gas Unit G-3-161300 | Proline Energy Resources Inc only | Phase Four (10540 Yegua) | Wharton | 1 | 45.1K | 2.9M | Jul 1996 – Jul 2025 |
| Caroline Pielop Unit 5 G-1-274514 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 45.1K | 3.59M | Dec 2013 – Aug 2026 |
| Derosa-Saunders O-14-522 | Red Line Company, Ltd. only | Panhandle Gray County Field | Gray | 3 | 44.8K | 265 | by Jan 1993 – Aug 2026 |
| Vaniman, F. A. O-14-567 | Red Line Company, Ltd. only | Panhandle Gray County Field | Gray | 6 | 44.7K | 245K | by Jan 1993 – Aug 2026 |
| Steinmeyer G-2-84611 | McCombs Energy, Ltd. only | Charline (Forney) | Live Oak | 1 | 44.7K | 1.05M | by Jan 1993 – May 2009 |
| Irt -21- O-10-28357 | Incline Energy only | Pecos Valley (Devonian) | Pecos | 1 | 44.3K | 73.3K | by Jan 1993 – Jul 2006 |
| Talley, Lee A G-3-123583 | Proline Energy Resources Inc only | Orchard, North (Wilcox) | Fort Bend | 1 | 44.1K | 2.22M | by Jan 1993 – Apr 2019 |
| Caroline Pielop Unit 9 G-1-268686 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 43.8K | 3.8M | Nov 2012 – Aug 2026 |
| Exxon-West Fee "C" a/C 1 G-3-109447 | Kinder Morgan Tejas Pipeline LLC only | Clear Lake, W. (Frio) | Harris | 1 | 43.3K | 1.74M | by Jan 1993 – Mar 2026 |
| Block, B. F. O-14-33 | Red Line Company, Ltd. only | Panhandle Carson County Field | Carson | 11 | 43.1K | 330K | by Jan 1993 – Aug 2026 |
| Glasscock Ranch G-3-47834 | Proline Energy Resources Inc only | Glasscock (Wilcox 10,500) | Colorado | 1 | 43.1K | 1.92M | by Jan 1993 – Oct 2019 |
| Bell Farms G-4-216716 | Proline Energy Resources Inc only | Midway, South (Consolidated) | San Patricio | 1 | 43K | 2.32M | Jan 2006 – Aug 2026 |
| Caroline Pielop Unit 9 G-1-273113 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 42.5K | 3.76M | Jun 2013 – Aug 2026 |
| Linney, C. M. et Al O-2-6879 | Outline Oil Company LLC only | Papalote, E. (3250) | Bee | 2 | 42.5K | 111 | by Jan 1993 – Oct 2016 |
| Noel, J. L. O-14-85 | Red Line Company, Ltd. only | Panhandle Carson County Field | Carson | 6 | 42.3K | 78.1K | by Jan 1993 – Aug 2026 |
| Pipeline State Unit G-10-297954 | EOG Resources, Inc. only | Phantom (Wolfcamp) | Reeves | 1 | 42.3K | 1.31M | Sep 2024 – Aug 2026 |
| Tri-Cities Gas Storage Unit G-5-49701 | Txu Lone Star Pipeline only | Tri-Cities (Rodessa) | Henderson | 1 | 42.3K | 65 | by Jan 1993 – Dec 2000 |
| Worrell, R. J., Comm. O-3-8341 | Proline Energy Resources Inc only | Chenango (8500 -B- Sd.) | Brazoria | 1 | 41.9K | 10.8K | by Jan 1993 – Dec 2018 |
| Beaurline G-4-218823 | Dewbre Petroleum Corporation only | McAllen Ranch (Vksbg W-Y) | Hidalgo | 1 | 41.5K | 1.64M | Mar 2006 – Aug 2026 |
| Kaffie Gas Unit G-2-101680 | McCombs Energy, Ltd. only | Charline (Forney) | Live Oak | 1 | 41K | 960K | by Jan 1993 – Oct 2011 |
| Duncan, F. B. G-3-5248 | Proline Energy Resources Inc only | Bernard, W. (Clodine) | Wharton | 1 | 40.8K | 4.2M | by Jan 1993 – Mar 2021 |
| Southwest O-10-26790 | Incline Energy only | Harper (Devonian) | Ector | 1 | 40.8K | 32.6K | by Jan 1993 – Jul 2008 |
| BRP-Polk O-11-68206 | Sojourner Drilling Corporation only | Skyline (Strawn) | King | 1 | 40.6K | 0 | Jun 2000 – Jul 2026 |
| Fortune 57-3 O-10-42005 | Waterbridge Stateline LLC only | Two Georges (Bone Spring) | Reeves | 3 | 39.7K | 148K | Oct 2011 – Mar 2019 |
| La Blanca Gas Unit G-4-167196 | Proline Energy Resources Inc only | La Blanca (Frio 11300) | Hidalgo | 1 | 39.5K | 2.43M | Feb 1998 – Apr 2002 |
| Spencer, Olivia Gas Unit G-9-18866 | Incline Energy only | Eldorado, Southwest (Strawn) | Schleicher | 1 | 39.3K | 5.26M | by Jan 1993 – Dec 2020 |
| Gray Line Gray Sand O-8-31381 | Quail Well Service, Inc. only | Robertson-Griffin (Gray Sand) | Taylor | 9 | 39.1K | 0 | Dec 2013 – Aug 2026 |
| Bottoms O-3-25978 | Jet Oil Producers, Inc. only | Coline | San Jacinto | 1 | 39.1K | 62.2K | Nov 2011 – May 2022 |
| Evangeline Unit O-6-12952 | Diversified Production LLC only | Carthage (Thompson) | Panola | 1 | 39K | 417K | by Jan 1993 – Aug 2026 |
| Cline 10 O-11-70934 | Tacoma Operating LLC only | Cmi (Spraberry) | Dawson | 1 | 39K | 36.7K | Jun 2019 – Aug 2026 |
| Holmes -WF- O-14-3046 | Red Line Company, Ltd. only | Panhandle Gray County Field | Gray | 14 | 39K | 3.82K | by Jan 1993 – Aug 2026 |
| Hutch-D. Jordan O-14-1047 | Red Line Company, Ltd. only | Panhandle Hutchinson County Fld. | Hutchinson | 9 | 39K | 94.6K | by Jan 1993 – Aug 2026 |
| Lackey O-1-12027 | Proline Energy Resources Inc only | Dale-McBride | Caldwell | 4 | 38.3K | 7.1K | by Jan 1993 – Dec 2025 |
| Moore, J. W. Estate -C- O-14-747 | Red Line Company, Ltd. only | Panhandle Hutchinson County Fld. | Hutchinson | 9 | 38.3K | 83K | by Jan 1993 – Aug 2026 |
| Linebery, Evelyn, Etal -15- O-10-11711 | Texland Petroleum, L.P. only | Union | Andrews | 3 | 38.2K | 9.55K | by Jan 1993 – Jun 1996 |
| Gamble O-3-26630 | Proline Energy Resources Inc only | Fort Trinidad, East (Buda) | Houston | 1 | 38.1K | 48.4K | May 2013 – Dec 2024 |
| Cox, C. E. O-5-2037 | Ursus Oil and Gas only | Grand Saline (1ST Rodessa) | Van Zandt | 1 | 37.9K | 452 | by Jan 1993 – Jul 2026 |
| Apex GU G-4-224307 | Proline Energy Resources Inc only | Midway, South (Consolidated) | San Patricio | 1 | 37.8K | 1.49M | Jan 2007 – Jun 2015 |
| Cooley, M. E. G-2-194567 | Proline Energy Resources Inc only | Mission Valley, West (Massive-1) | Victoria | 1 | 37.5K | 1.89M | Sep 2000 – Apr 2026 |
| Countiss Sam G-4-194242 | Proline Energy Resources Inc only | Baldwin (9290) | Nueces | 1 | 37.3K | 1.45M | Oct 2002 – May 2013 |
| County Line "A" O-8-31449 | Scout Energy Management LLC only | Gammon Road (Caddo Lime) | Fisher | 5 | 37.2K | 0 | Nov 2012 – Aug 2026 |
| Hopkins O-6-5598 | Proline Energy Resources Inc only | Carthage (Hill, Southwest) | Panola | 2 | 37K | 33.1K | by Jan 1993 – Apr 2017 |
| BP-Stockstill G-3-254768 | Proline Energy Resources Inc only | Bessmay (Wilcox Cons) | Jasper | 1 | 36.6K | 179K | Aug 2009 – Aug 2026 |
| Archer, W. C. O-14-383 | Red Line Company, Ltd. only | Panhandle Gray County Field | Gray | 6 | 36.5K | 71.4K | by Jan 1993 – Aug 2026 |
| Lyne Gas Unit "A" G-2-180277 | Sandel Operating Company only | Charline (Forney) | Live Oak | 1 | 36K | 2.53M | Nov 2000 – Aug 2026 |
| Glasscock, C. G. G-3-150510 | Proline Energy Resources Inc only | Glasscock (Wilcox 10630) | Colorado | 1 | 35.8K | 1.38M | Jul 1994 – Jan 2005 |
| Gold-Zapp G-3-180578 | Proline Energy Resources Inc only | Phase Four (10500 Yegua) | Wharton | 1 | 35.6K | 1.4M | Dec 2000 – Mar 2026 |
| Mora Fee O-3-5584 | Sideline Oil & Gas, L.P. only | Hastings, East | Brazoria | 5 | 35.4K | 32 | by Jan 1993 – Aug 2026 |
| Hull G-3-126337 | Proline Energy Resources Inc only | Hull Airport (Yegua 8660) | Fort Bend | 1 | 35.2K | 3.77M | by Jan 1993 – Nov 2025 |
| Jones Estate G-4-216031 | Proline Energy Resources Inc only | Midway, South (Consolidated) | San Patricio | 1 | 34.9K | 2.62M | Feb 2006 – Apr 2026 |