| Twofreds, Delaware Field Unit O-10-17356 | Q Natural Resources, LLC only | Twofreds (Delaware) | Loving | 98 | 2.26M | 6.96M | Jan 1993 – Feb 2024 |
| Fredericksburg F O-10-61729 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Midland | 5 | 807K | 2.09M | Apr 2024 – Apr 2026 |
| Freddy the Falcon 2-11 B O-10-59099 | Birch Operations, Inc. only | Spraberry (Trend Area) | Martin | 3 | 750K | 2.97M | Sep 2022 – Apr 2026 |
| Fredericksburg E O-10-61724 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Midland | 5 | 682K | 1.91M | Apr 2024 – Apr 2026 |
| Freddy the Falcon 2-11 D O-10-59100 | Birch Operations, Inc. only | Spraberry (Trend Area) | Martin | 3 | 657K | 2.77M | Sep 2022 – Apr 2026 |
| Freddy the Falcon 2-11 A O-10-59098 | Birch Operations, Inc. only | Spraberry (Trend Area) | Martin | 3 | 594K | 1.93M | Sep 2022 – Apr 2026 |
| Fredericksburg G O-10-61920 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Midland | 3 | 585K | 1.2M | Apr 2024 – Apr 2026 |
| Freddy the Falcon 2-11 C O-10-59123 | Birch Operations, Inc. only | Spraberry (Trend Area) | Martin | 3 | 582K | 2.12M | Sep 2022 – Apr 2026 |
| Fredericksburg O-10-61710 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Midland | 4 | 513K | 1.23M | Apr 2024 – Apr 2026 |
| Freddy the Falcon 2-11 E O-10-59101 | Birch Operations, Inc. only | Spraberry (Trend Area) | Martin | 2 | 463K | 1.56M | Sep 2022 – Apr 2026 |
| Fredericksburg State 3-8 Unit G-10-283411 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Reeves | 1 | 352K | 2.21M | Jan 2018 – Apr 2026 |
| Luecke, Fred O-3-18849 | Browning Oil Company, Inc. only | Gini (Wilcox) | Fayette | 2 | 300K | 425K | Jan 1993 – Sep 2005 |
| Poe, Fredric W. O-9-14334 | Enrich Oil Corporation only | Dorman (Goen) | Runnels | 1 | 298K | 64.5K | Mar 1996 – Sep 2013 |
| Schlosser, Fred Estate -B- O-10-26096 | XTO Energy Inc. only | Rojo Caballos (Delaware) | Pecos | 8 | 265K | 226K | Jan 1993 – Sep 2017 |
| Wilfred Dainty O-3-25339 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Madison | 4 | 227K | 367K | Mar 2009 – Mar 2026 |
| Boeker, Alfred O-3-16828 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Washington | 1 | 216K | 1.05M | Jan 1993 – Nov 2024 |
| Wilfred Dainty (Allocation) O-3-26936 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Madison | 1 | 213K | 490K | May 2013 – Mar 2026 |
| Houston, Fred "B" O-10-38686 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 4 | 198K | 576K | Jan 2008 – Jun 2025 |
| Hopeful Fred O-11-66768 | Raw Oil & Gas, Inc. only | Paladin-Barton (Canyon) | Scurry | 1 | 191K | 235K | Jan 1993 – Aug 2013 |
| Snuggs, Fred O-13-2484 | Sydri Operating, LLC only | Walnut Bend (Bruhlmeyer) | Cooke | 6 | 179K | 279 | Jan 1993 – Apr 2026 |
| Jones, Fred B. Unit G-4-194464 | Orx Resources, L.L.C. only | White Point, East (Consolidated) | San Patricio | 1 | 170K | 3.28M | Mar 2003 – Jul 2020 |
| Coffey, W. V. O-2-6371 | Fredco only | Heyser (6000) | Victoria | 2 | 169K | 371K | Jan 1993 – Apr 2026 |
| Dowda, Fred W. O-13-7871 | Keating Energy, Inc. only | Holbert (Caddo) | Young | 4 | 166K | 281K | Jan 1993 – Apr 2026 |
| Fred Hall Unit O-10-40030 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 3 | 162K | 320K | Jan 2010 – Apr 2026 |
| University 19-8 O-10-32965 | Last Mile Production, LLC only | Twofreds, E. (Delaware) | Loving | 2 | 155K | 441K | Jan 1993 – Feb 2024 |
| Kassner Energy Management, LLC O-1-6042 | Outline Oil Company LLC only | Freddy Hutt, South (Wilcox) | McMullen | 6 | 154K | 19 | Jan 1993 – Apr 2024 |
| Frederick /Luling/ O-7-7897 | Basa Resources, Inc. only | East Texas | Rusk | 3 | 151K | 21 | Jan 1993 – Apr 2026 |
| Frederick -B- O-7-6670 | Rmor Production only | East Texas | Rusk | 2 | 146K | 46 | Jan 1993 – Mar 2026 |
| Coffey, W. V. O-2-8478 | Fredco only | Heyser (5700) | Victoria | 1 | 144K | 122K | Oct 1999 – Apr 2026 |
| Parker, James F. O-3-9626 | Foundation Energy Management LLC only | Fred, East (8200 -C- Sand) | Tyler | 1 | 132K | 25.1K | Jan 1993 – Feb 2026 |
| Fred Unit O-10-33874 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 3 | 129K | 144K | May 1993 – Apr 2026 |
| Jones, Alfred O-7-6428 | Basa Resources, Inc. only | East Texas | Gregg | 14 | 129K | 137K | Jan 1993 – Apr 2026 |
| Steinman, Alfred O-2-7006 | Sandridge Expl. and Prod., LLC only | Provident City, NE (5625) | Lavaca | 1 | 123K | 122K | Jan 1993 – Jan 2006 |
| Mauritz Estate O-2-7854 | Fredco only | Mauritz (6245) | Jackson | 1 | 120K | 34.9K | Feb 1993 – Apr 2026 |
| Frederick, W. H.(MUSTANG1) O-7-6463 | Basa Resources, Inc. only | East Texas | Rusk | 4 | 114K | 20 | Jan 1993 – Apr 2026 |
| Kassner Energy Management, LLC O-1-4406 | Outline Oil Company LLC only | Freddy Hutt (Wilcox) | McMullen | 4 | 106K | 19 | Jan 1993 – Apr 2024 |
| Mauritz D O-2-10809 | Fredco only | Mauritz, West (5400) | Jackson | 1 | 102K | 9.75K | Jul 2014 – Apr 2026 |
| Ball, Fred O-9-10529 | Atlas Operating LLC only | Price (Grayburg) | Reagan | 7 | 101K | 34.8K | Jan 1993 – Mar 2026 |
| University-Fred "A" O-10-34933 | Flat Top Operating, LLC only | Twofreds, E. (Delaware) | Loving | 1 | 100K | 322 | May 1996 – Jan 2026 |
| Jones,fred B. Unit G-4-170590 | EOG Resources, Inc. only | White Point, East (Consolidated) | San Patricio | 1 | 99.9K | 2.28M | Oct 1998 – Jun 2018 |
| University-Fred O-10-34508 | Flat Top Operating, LLC only | Twofreds, E. (Delaware) | Loving | 1 | 97.4K | 50.2K | Jun 1995 – Sep 2025 |
| Parker, J. F., -B- O-3-5821 | Foundation Energy Management LLC only | Fred, East (8200 -C- Sand) | Tyler | 2 | 93.6K | 43.3K | Jan 1993 – Mar 2026 |
| Fred H. Chandler Unit O-1-12814 | Marathon Oil Company only | Pawelek (Austin Chalk) | Wilson | 3 | 91.2K | 21 | Jan 1993 – Jan 2012 |
| Kasper, Fred O-3-20853 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 89.5K | 554K | Jan 1993 – Apr 2026 |
| Parker, J. F., -B- O-3-8098 | Foundation Energy Management LLC only | Fred, East (8200 -A-) | Tyler | 1 | 85.1K | 31.8K | Jan 1993 – Apr 2026 |
| Schmidt, Alfred O-3-16566 | Allegiant Resources, LLC only | Caldwell (Austin Chalk) | Burleson | 1 | 84.6K | 228K | Jan 1993 – Apr 2026 |
| Kassner O-1-14656 | Atlas Operating LLC only | Mid-Freddy Hut (Wright) | McMullen | 1 | 84.5K | 0 | Jul 2005 – Aug 2016 |
| Bam Bam O-6-14856 | Samson Lone Star, LLC only | Huxley (Fredricksburg) | Shelby | 2 | 80.3K | 1.62M | Dec 2008 – Mar 2014 |
| Freddy Falcon 360 O-11-71355 | Ring Energy, Inc. only | Platang (San Andres) | Yoakum | 3 | 77.1K | 80.1K | Aug 2024 – Apr 2026 |
| Grand Poobah O-6-14917 | Samson Lone Star, LLC only | Huxley (Fredricksburg) | Shelby | 1 | 75K | 1.08M | Sep 2009 – Mar 2014 |