| Crnkovic, Mildred Unit O-3-13912 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 2 | 412K | 824K | by Jan 1993 – Jul 2026 |
| Hutchinson, Mildred O-14-8077 | Mewbourne Oil Company only | Pan Petro (Cleveland) | Ochiltree | 4 | 318K | 2.07M | Nov 2009 – Aug 2026 |
| Mildred Unit O-1-18075 | Texas American Resources Company only | Eagleville (Eagle Ford-1) | Atascosa | 2 | 245K | 160K | Jul 2015 – Aug 2026 |
| Mildred Good 211 O-14-9123 | Presidio Petroleum LLC only | Pan Petro (Cleveland) | Ochiltree | 2 | 189K | 515K | Jun 2014 – Aug 2026 |
| Mildred Esse Giese Unit A O-2-10111 | Burlington Resources O & G Co LP only | Eagleville (Eagle Ford-2) | Live Oak | 1 | 178K | 774K | Aug 2012 – Aug 2026 |
| Jones, Mildred -B- O-10-7088 | Vital Energy, Inc. only | Vealmoor | Howard | 1 | 173K | 303K | by Jan 1993 – Oct 2018 |
| Mildred O-10-40498 | Discovery Operating, Inc. only | Spraberry (Trend Area) | Martin | 2 | 136K | 221K | Jul 2010 – Aug 2026 |
| Mildred House Unit A O-2-9940 | Verdun Oil & Gas LLC only | Eagleville (Eagle Ford-2) | Live Oak | 1 | 99.3K | 417K | Jul 2012 – Aug 2026 |
| Mildred O-10-22185 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 3 | 97.4K | 234K | by Jan 1993 – Apr 2026 |
| Mildred 34 O-9-18583 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Upton | 2 | 83.6K | 422K | May 2014 – Mar 2025 |
| Taylor, Mildred O-8-20957 | Jrow Energy LLC only | Four Way (Noodle Creek) | Jones | 5 | 44.8K | 20 | Feb 1993 – Aug 2023 |
| Nagel, Mildred et al Unit O-1-10604 | Seguro Well Service, Inc. only | Peach Creek (Austin Chalk) | Gonzales | 1 | 32.8K | 3.13K | by Jan 1993 – Nov 2023 |
| Mildred O-3-15403 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Lee | 2 | 30.2K | 737K | by Jan 1993 – Aug 2026 |
| Mildred O-6-14999 | Aethon Energy Operating LLC only | Huxley (Fredricksburg) | Shelby | 2 | 27.5K | 500K | Nov 2010 – Jun 2018 |
| Mildred Jones O-10-46321 | Crescent Energy Operating, LLC only | Vealmoor | Howard | 2 | 24.8K | 23K | Jun 2014 – Jan 2026 |
| Mildred O-14-6596 | Unbridled Resources, LLC only | Lone Butte (Cleveland) | Ochiltree | 1 | 23.7K | 486K | by Jan 1993 – Apr 2018 |
| Mildred O-3-17729 | Well-Co Solutions, LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 19.8K | 519K | by Jan 1993 – Feb 2015 |
| Diller, Mildred "A" O-8-21029 | Quantum Investments only | Shackelford County Regular | Shackelford | 27 | 16.1K | 56 | by Jan 1993 – May 2004 |
| Wines, Mildred O-13-27941 | Biehl Oil Service's LLC only | Buffalo Springs, N. (Congl.) | Clay | 1 | 14.3K | 1.65K | by Jan 1993 – Jul 2016 |
| Coleman, Mildred et al "A" O-11-5700 | Onaroll Operating LLC only | Sharon Ridge (1700) | Mitchell | 2 | 13.2K | 36 | by Jan 1993 – Jul 2026 |
| Mildred O-11-12851 | Schlachter Operating Corporation only | Sharon Ridge (1700) | Mitchell | 3 | 13.2K | 21 | by Jan 1993 – Aug 2026 |
| Diller, Mildred Etal O-8-5964 | Grothe Bros., Inc. only | Shackelford County Regular | Shackelford | 5 | 13.1K | 22 | by Jan 1993 – Sep 2014 |
| Hutchinson, Mildred O-14-7622 | BP America Production Company only | Paul Harbaugh (Atoka Sand) | Ochiltree | 1 | 7.16K | 216K | Aug 2005 – Sep 2006 |
| East, Mildred B. O-3-13702 | Rusk Energy Operating LLC only | Willard, SE (Navarro B) | Burleson | 1 | 6.96K | 126 | by Jan 1993 – Nov 2024 |
| Arnold, Mildred O-2-7663 | Hurd Enterprises, Ltd. only | Cuthbertson (Mackhank) | De Witt | 2 | 6.37K | 477K | by Jan 1993 – Dec 1997 |
| Weeks, Mildred N. O-1-13194 | Miesch Exploration Corporation only | Pearsall (Austin Chalk) | La Salle | 1 | 3.6K | 902 | by Jan 1993 – Sep 1996 |
| Durham, Mildred O-13-28717 | Merit Energy Company only | Morris (Consolidated Congl.) | Jack | 1 | 3.58K | 294K | Dec 1993 – Jan 1999 |
| Patton, Mildred M. et Al O-11-9136 | Schlachter Operating Corporation only | Sharon Ridge (1700) | Mitchell | 1 | 3.02K | 18 | Feb 1993 – Aug 2026 |
| Hutchinson, Mildred M. Etal O-14-4093 | Midgard Energy Company only | Dutcher (Cleveland) | Ochiltree | 1 | 2.77K | 8.65K | by Jan 1993 – Apr 1996 |
| Durham, Mildred Etal O-13-3746 | Merit Energy Company only | Jupiter (Conglomerate Upper) | Jack | 3 | 1.53K | 37.3K | by Jan 1993 – Dec 2000 |
| Mildred M. Hutchinson et Al O-14-9897 | H & L Exploration Company, LLC only | St. Clair (Granite Wash) | Ochiltree | 1 | 1.31K | 0 | Jul 2026 – Jul 2026 |
| Munger, Mildred O-1-2010 | K.A. Barnes Oil & Gas Oper, LLC only | Fairfield | Bexar | 1 | 517 | 20 | by Jan 1993 – Aug 2026 |
| Taylor, Mildred O-8-19010 | Jrow Energy LLC only | Four Way (Flippen Lime) | Jones | 1 | 504 | 4 | Feb 1993 – Feb 2023 |
| Pickrell, Mildred B. O-8-16322 | Hunter Oil & Gas Co. only | Eastland County Regular | Eastland | 2 | 484 | 3.16K | Dec 1993 – Mar 1997 |
| Durham, Mildred et Al O-13-32401 | Eagleridge Operating, LLC only | Jupiter (Conglomerate Upper) | Jack | 1 | 414 | 2.87K | Oct 2012 – Aug 2026 |
| Jefferies, Mildred State O-10-27176 | Molder, Tom only | Malicky (Queen Sand) | Pecos | 4 | 255 | 16 | by Jan 1993 – Sep 1994 |
| Durham, Mildred O-13-29958 | Merit Energy Company only | Newark, East (Barnett Shale) | Jack | 1 | 251 | 13.1K | Sep 2001 – Mar 2002 |
| Tiller, Mildred O-1-7447 | Jemco Production, Inc only | Luling-Branyon | Caldwell | 4 | 131 | 1 | Sep 1993 – Dec 1993 |
| Jones, Mildred O-4-13624 | Headington Oil Company LLC only | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 2 | 71 | 12.4K | May 2013 – Jul 2013 |
| Taylor, Mildred O-8-20517 | A.E.N. Energy, Inc. only | Ray (Swastika) | Fisher | 4 | 57 | 6 | by Jan 1993 – Jun 1993 |
| Bonds, Mildred O-8-17916 | Rough Hollow Oil & Gas Co. only | Brown County Regular | Brown | 1 | 41 | 1 | Feb 1993 – Feb 1993 |
| Taylor, Mildred O-8-23816 | R & D Operating, Inc. only | Brown County Regular | Brown | 3 | 29 | 750 | by Jan 1993 – Oct 1998 |
| Tiller, Mildred-D- O-1-7633 | Jemco Production, Inc only | Luling-Branyon | Caldwell | 2 | 0 | 0 | — |
| Birdwell O-13-12189 | Whitsitt, Mildred M. only | Birdwell (Swastika) | Archer | 3 | 0 | 0 | — |
| Mildred Jones O-10-45809 | Finley Resources, Inc. only | Vealmoor, Central (Canyon Reef) | Howard | 1 | 0 | 0 | — |
| Mildred 34 O-9-19212 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 1 | 0 | 0 | — |
| Waxler, Mildred O-10-24015 | Kaiser-Francis Oil Company only | Spraberry (Trend Area) | Martin | 1 | 0 | 0 | — |
| Atlas, Mildred O-5-3610 | Union Pacific Resources Company only | Wildcat | Johnson | 1 | 0 | 0 | — |
| Jones, Mildred E. O-4-12181 | Exxon Mobil Corporation only | Sarita (5-C, SW) | Kenedy | 1 | 0 | 0 | — |
| Jones, Mildred E. O-4-10775 | Exxon Mobil Corporation only | Sarita (5-P,w) | Kenedy | 1 | 0 | 0 | — |