| Walters A O-2-10255 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 11 | 5.07M | 9.66M | Apr 2012 – Aug 2026 |
| Pfluger, Walter & Raymond O-9-13321 | Sundown Oil Operating, LLC only | Pipe Dream (King Sand) | Concho | 25 | 2.74M | 378K | by Jan 1993 – Aug 2026 |
| Walter Unit O-2-10900 | EOG Resources, Inc. only | Eagleville (Eagle Ford-2) | Karnes | 4 | 1.71M | 2.29M | Jul 2014 – Aug 2026 |
| Walters, Mittie O-10-32425 | Basa Resources, Inc. only | Buckwheat (Siluro-Devonian) | Howard | 5 | 1.44M | 68.3K | by Jan 1993 – Aug 2026 |
| Robb Walter Unit O-10-47664 | OXY USA Inc. only | Spraberry (Trend Area) | Howard | 3 | 977K | 1.18M | Feb 2016 – Aug 2026 |
| Roberson, Walter O-7-7200 | Linder, John Operating Co., LLC only | East Texas | Rusk | 22 | 636K | 71K | by Jan 1993 – Aug 2026 |
| Martin, Walter O-11-13774 | Rusk Co. Well Service Co., Inc. only | Sharon Ridge (Clear Fork) | Scurry | 20 | 625K | 20 | by Jan 1993 – Jul 2026 |
| Pfluger, Walter & Raymond "C" O-9-13365 | Sundown Oil Operating, LLC only | Pipe Dream (King Sand) | Concho | 6 | 594K | 68.3K | by Jan 1993 – Aug 2026 |
| Smith, Walter Unit O-8-28573 | L.C.S. Production Company only | Mengel, E. (Canyon Sand) | Stonewall | 19 | 369K | 66.8K | Dec 1998 – Aug 2026 |
| Walter Co. G-3-260140 | Hilcorp Energy Company only | Constitution (Westbury) | Jefferson | 1 | 319K | 2.13M | Jan 2011 – Aug 2026 |
| Walter Co. G-3-271201 | Hilcorp Energy Company only | Constitution (Westbury) | Jefferson | 1 | 305K | 3.08M | Sep 2013 – Aug 2026 |
| Walter Company "D" G-3-221521 | Ballard Exploration Company,inc. only | China (Yegua Cons.) | Jefferson | 1 | 292K | 2.53M | May 2006 – Nov 2014 |
| Walter Co. Unit O-3-24724 | Serco Operating LLC only | Green Gully (Nod Blanpedi) | Jefferson | 1 | 252K | 176K | Apr 2005 – Aug 2026 |
| Green, Walter Unit O-3-18934 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 4 | 243K | 1.32M | by Jan 1993 – Aug 2026 |
| Walter Fister 71-TTT-B01 WF O-10-50488 | Matador Production Company only | Phantom (Wolfcamp) | Loving | 1 | 241K | 949K | Feb 2018 – Aug 2026 |
| BSM A-471 G-6-292313 | Walter Oil & Gas Corporation only | Brookeland (Austin Chalk, 8800) | Polk | 1 | 227K | 1.59M | Feb 2022 – May 2025 |
| Schulze, Walter J. O-1-13170 | Trinity Operating (Usg), LLC only | Pearsall (Austin Chalk) | La Salle | 1 | 215K | 58.5K | by Jan 1993 – Aug 2026 |
| Davis, Walter R. "44" O-10-36183 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 4 | 210K | 356K | Sep 1999 – Apr 2025 |
| Lightsey, Walter O-3-14048 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 3 | 196K | 573K | by Jan 1993 – Jul 2026 |
| Gibbs, Walter Jr. O-3-20684 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 171K | 355K | by Jan 1993 – Jul 2026 |
| Walters, Ralph J. O-6-12202 | HD Operating Co, LLC only | Laura la Velle, S. (1600) | Houston | 8 | 158K | 27 | by Jan 1993 – May 2026 |
| Walter Co. O-3-23974 | Cimarex Energy Co. only | Fannett, N. (Hackberry) | Jefferson | 1 | 150K | 508K | Mar 2001 – Mar 2007 |
| Solomon-Walters O-13-27365 | Mountain Creek Oil Company, Inc. only | Cooke County Regular | Cooke | 15 | 138K | 21 | by Jan 1993 – Aug 2026 |
| Walter Kelly "19" O-10-41970 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 3 | 131K | 209K | Jan 2012 – Apr 2025 |
| Walter 24 G-14-280850 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 126K | 1.85M | Apr 2016 – Aug 2026 |
| Walterscheid, J. O-13-12348 | WFW Production Company, Inc. only | Cooke County Regular | Cooke | 23 | 115K | 21 | by Jan 1993 – Aug 2026 |
| Robtann O-8-28266 | Walter Exploration Company only | Sprague (Flippen) | Nolan | 1 | 111K | 4.95K | Jul 1997 – Nov 2013 |
| State Tract 806-S G-4-201698 | Walter Oil & Gas Corporation only | Matagorda 806 (Frio 11100) | Matgrda IS-SB | 1 | 111K | 2.85M | Sep 2004 – Jul 2011 |
| Ash, Walter O-8-27075 | Antle Operating, Inc. only | Palo Pinto County Regular | Palo Pinto | 7 | 107K | 200K | Dec 1993 – Aug 2026 |
| Ash, Walter O-8-27550 | Antle Operating, Inc. only | Wagnon (Strawn Granny Sd.) | Palo Pinto | 11 | 103K | 137K | May 1995 – Aug 2026 |
| Cabot-Walter O-11-62770 | Merit Energy Company only | Lee Harrison | Lubbock | 4 | 92.7K | 1.29K | by Jan 1993 – Jul 2006 |
| Pace, Elgie O-8-26198 | Walter Exploration Company only | Sprague (Cisco) | Nolan | 3 | 91.9K | 8.17K | by Jan 1993 – Jul 2009 |
| Batchelor O-13-27430 | Walter H. Husfeld Oil Co LLC only | Salona (Strawn 5400) | Montague | 2 | 90.2K | 31.5K | by Jan 1993 – Nov 2025 |
| Smith, A.E. "A" O-8-25434 | Walter Exploration Inc. only | Mengel, E. (Canyon Sand) | Stonewall | 6 | 87.7K | 39.7K | by Jan 1993 – Nov 1998 |
| Wash, Walter O-1-963 | 907 Oil LLC only | Linne (Poth -a- Sand) | Wilson | 7 | 84.6K | 20 | by Jan 1993 – Jul 2026 |
| Scott, Walter G-6-142215 | Atlas Operating LLC only | Chapel Hill (Rodessa) | Smith | 1 | 81.3K | 1.41M | by Jan 1993 – Apr 2026 |
| Woods A-82 G-3-234640 | Walter Oil & Gas Corporation only | Double a Wells, N (Austin Chalk) | Polk | 1 | 81.3K | 499K | Sep 2007 – Mar 2023 |
| Walter Smith Unit O-8-31022 | L.C.S. Production Company only | Sherry (Strawn) | Stonewall | 4 | 80.7K | 24.7K | May 2012 – Aug 2026 |
| Winterbotham A-114 O-9-23095 | Walter Oil & Gas Corporation only | Dove Creek (Canyon -C-) | Irion | 1 | 79.1K | 105K | Apr 2025 – Jan 2026 |
| Walter Ranch O-13-32823 | White Knight Production LLC only | KRS (Marble Falls) | Palo Pinto | 7 | 76.9K | 1.33M | Aug 2013 – May 2021 |
| Henslee, Walter O-8-23907 | Powell, A. Brandt Co. only | Taylor County Regular | Taylor | 2 | 72K | 192 | by Jan 1993 – Aug 2026 |
| Walterscheid, C. M. O-13-2248 | V & H Oil, L.P. only | Cooke County Regular | Cooke | 31 | 70.5K | 20 | by Jan 1993 – Aug 2026 |
| Dewbre, Walter O-13-28640 | Eagleridge Operating, LLC only | Morris (Consolidated Congl.) | Wise | 3 | 68.4K | 164K | May 1993 – Oct 2018 |
| Livingston "A" O-13-29609 | Sojourner Drilling Corporation only | Walter Bills (Tannehill) | Knox | 3 | 66.9K | 254 | Jan 1999 – Jul 2026 |
| Pace, Elgie O-8-28281 | Walter Exploration Company only | Sprague (Flippen) | Nolan | 2 | 62.9K | 3.75K | Sep 1997 – Jul 2009 |
| Walters 11 O-10-42920 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Glasscock | 2 | 62.6K | 475K | Jul 2012 – Jul 2019 |
| Robtann "C" O-8-28098 | Walter Exploration Company only | Sprague (Upper Cisco) | Nolan | 1 | 62.2K | 4.64K | Jan 1997 – Dec 2004 |
| Walters, Ralph J. Unit O-6-12284 | HD Operating Co, LLC only | Laura la Velle, S. (1600) | Houston | 2 | 60.2K | 27 | by Jan 1993 – May 2025 |
| Griffith "A" O-3-18838 | Walter Exploration Inc. only | Stuart Creek (10200 Wilcox) | Colorado | 1 | 59.3K | 1.2M | by Jan 1993 – Sep 2000 |
| Walter Wernli 01 G-2-271138 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Bee | 1 | 59.1K | 2.08M | Aug 2013 – Jul 2026 |