| 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 |
| BSM A-471 G-6-292313 | Walter Oil & Gas Corporation only | Brookeland (Austin Chalk, 8800) | Polk | 1 | 227K | 1.59M | Feb 2022 – May 2025 |
| Walter 24 G-14-280850 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 126K | 1.85M | Apr 2016 – Aug 2026 |
| 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 |
| 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 Wernli 01 G-2-271138 | Marathon Oil EF LLC only | Sugarkane (Eagle Ford) | Bee | 1 | 59.1K | 2.08M | Aug 2013 – Jul 2026 |
| BSM Cannon A-95 G-6-295222 | Walter Oil & Gas Corporation only | Brookeland (Austin Chalk, 8800) | Polk | 1 | 56.2K | 504K | Jan 2023 – May 2025 |
| Walter Co. "B" G-3-186632 | Ballard Exploration Company,inc. only | China (Vicksburg) | Jefferson | 1 | 53.2K | 710K | Oct 2001 – Sep 2003 |
| Walter 24 G-14-282909 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 50.9K | 795K | May 2017 – Aug 2026 |
| Walter Company "C" St G-3-222123 | Ballard Exploration Company,inc. only | China (Yegua Cons.) | Jefferson | 1 | 48.5K | 789K | Feb 2006 – Feb 2012 |
| Grant "A" G-4-186062 | Walter Oil & Gas Corporation only | McCampbell (Frio P, Upper) | Aransas | 1 | 37.3K | 949K | Mar 2001 – Feb 2003 |
| Griffith "A" G-3-180152 | Walter Exploration Company only | Stuart Creek (10200 Wilcox) | Colorado | 1 | 36.4K | 813K | Oct 2000 – Sep 2015 |
| Kallina G-3-172147 | Walter Oil & Gas Corporation only | Kacee (Cruel) | Colorado | 1 | 33.3K | 3.8M | Dec 1998 – Jan 2001 |
| Broyles G-3-200344 | Walter Oil & Gas Corporation only | Chesterville, North (Yegua 7) | Colorado | 1 | 28.3K | 206K | Nov 2003 – Aug 2005 |
| Morgan G-3-295852 | Walter Oil & Gas Corporation only | Brookshire (6800 Sand) | Waller | 1 | 28.1K | 1.23M | Jul 2023 – Aug 2026 |
| Walters, Dorothy G-2-152258 | Mountain V Texas, LLC only | Provident City (Yegua 5770) | Lavaca | 1 | 20.2K | 1.54M | Nov 1994 – Jul 2010 |
| Vastar-Duncan "E" G-3-171201 | Walter Oil & Gas Corporation only | Egypt (7950) | Wharton | 1 | 19.7K | 2.58M | Oct 1998 – Apr 2001 |
| Walter Ranch G-13-279085 | FX Energy Operating, LLC only | KRS (Marble Falls) | Palo Pinto | 1 | 18.1K | 697K | Dec 2015 – Aug 2026 |
| S. T. 310-L S/2/NE/4 G-3-159858 | Walter Oil & Gas Corporation only | Cyclone (Rob 43 6350 Res. A) | Galveston-LB | 1 | 17.5K | 8.11M | May 1996 – Apr 2011 |
| Despain, Walter G-4-185464 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 16.9K | 2.68M | Sep 2001 – Aug 2026 |
| S.T. 341-L S/2 NE/4 G-3-166206 | Walter Oil & Gas Corporation only | Brazos Block 341-L (RM6) | Brazos-LB | 1 | 15.9K | 7.06M | Nov 1997 – Jun 2001 |
| Walter Ranch G-13-279083 | FX Energy Operating, LLC only | KRS (Marble Falls) | Palo Pinto | 1 | 15.3K | 485K | Dec 2015 – Aug 2026 |
| S. T. 310-L S/2 NE/4 G-3-160339 | Walter Oil & Gas Corporation only | Cyclone (Rob 43 6350 Res. A) | Galveston-LB | 1 | 14.5K | 6.04M | Jun 1996 – Apr 2011 |
| Walter Ranch G-13-279379 | FX Energy Operating, LLC only | KRS (Marble Falls) | Palo Pinto | 1 | 14.1K | 366K | Nov 2015 – Aug 2026 |
| Brown, Walter B. G-6-47256 | TTK Energy LLC only | Nevis (Rodessa) | Anderson | 1 | 13.7K | 559K | by Jan 1993 – Mar 2025 |
| Broyles G-3-221755 | Walter Oil & Gas Corporation only | Chesterville, North (Yegua 6300) | Colorado | 1 | 13.6K | 1.39M | Oct 2006 – Feb 2012 |
| Cook, Walter W. Unit G-3-196709 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 1 | 13.2K | 414K | Sep 2003 – Aug 2026 |
| Walter Co. G-3-165200 | Ballard Exploration Company,inc. only | China (Yegua EY-2) | Jefferson | 1 | 12.9K | 534K | Aug 1997 – Nov 1999 |
| S.T. 341-L S/2 NE/4 G-3-185896 | Walter Oil & Gas Corporation only | Brazos Block 341-L (RM-5) | Brazos-LB | 1 | 10.4K | 5.8M | Jul 2001 – Feb 2008 |
| Ruschaupt, S. F. G-2-32829 | Walter Exploration Company only | Mission Valley (11,900 Wilcox) | Victoria | 1 | 10.2K | 411K | by Jan 1993 – Oct 2014 |
| Ruschaupt G-2-212603 | Walter Exploration Company only | Mission Valley (10,220) | Victoria | 1 | 10.1K | 712K | May 2004 – Jun 2011 |
| Walters, Dorothy G-2-160684 | Shana Petroleum Company only | Provident City (Yegua M-1, N.) | Lavaca | 1 | 10K | 545K | Sep 1996 – Oct 1999 |
| S.T. 341-L S/2 NE/4 G-3-157561 | Walter Oil & Gas Corporation only | Brazos Block 341-L (RM7) | Brazos-LB | 1 | 9.97K | 3.2M | Oct 1995 – Oct 1997 |
| S. T. 307-L S2 SE/4 G-3-192646 | Walter Oil & Gas Corporation only | Cyclone (Robulus 43) | Galveston-LB | 1 | 9.61K | 5.42M | Nov 2002 – Dec 2010 |
| Walters, Dorothy G-2-150785 | Shana Petroleum Company only | Provident City (Yegua O, North) | Lavaca | 1 | 9.52K | 533K | Jul 1994 – Aug 1996 |
| Dube, Walter G-3-114484 | Lindow Oil & Gas, LLC only | Hooker Creek (Navarro A) | Lee | 1 | 9.37K | 92.7K | by Jan 1993 – Aug 2026 |
| Forgason Division, Ltd. G-3-176544 | Walter Oil & Gas Corporation only | Egypt (Cook Mtn. 8300) | Wharton | 1 | 8.99K | 1.38M | Sep 1999 – May 2001 |
| Davis, Walter B. G-6-236031 | Buffco Production Inc. only | Carthage (Cotton Valley) | Panola | 1 | 8.9K | 433K | Apr 2008 – Aug 2026 |
| Lehrer "D" G-3-174773 | Walter Oil & Gas Corporation only | Graceland (Blue Suede) | Colorado | 1 | 8.84K | 262K | May 1999 – May 2000 |
| Walters, Dorothy G-2-147903 | Shana Petroleum Company only | Provident City (Yegua N, West) | Lavaca | 1 | 8.65K | 916K | Nov 1993 – Nov 1998 |
| Walter Co. G-3-163935 | Ballard Exploration Company,inc. only | China (Yegua EY) | Jefferson | 1 | 7.56K | 98.8K | Apr 1997 – Jul 1997 |
| Walter Despain 12 G-4-188531 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 7.12K | 1.57M | Mar 2002 – Aug 2026 |
| McGee, Walter G-13-133058 | Keating Energy, Inc. only | Young County Regular (Gas) | Young | 1 | 6.9K | 568K | by Jan 1993 – Aug 2026 |
| Walter Despain 12 G-4-191672 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 6.59K | 1.01M | Aug 2002 – Aug 2026 |
| Allen, Walter G-6-216170 | Soldier Creek Energy, LLC only | Hardwood (Cotton Valley) | Harrison | 1 | 6.24K | 966K | Nov 2005 – Dec 2016 |
| Walter Ranch G-13-279082 | FX Energy Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 6.18K | 447K | Nov 2015 – Aug 2026 |
| Walter Ruschhaupt Unit G-2-207885 | Walter Exploration Company only | Mission Valley, W.(wilcox 10600) | Victoria | 1 | 6.01K | 282K | Jul 2004 – May 2015 |