| Allar-Callaway 27K O-10-62214 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 341K | 461K | Sep 2024 – Jul 2026 |
| Madison-Callaway 27G O-10-62205 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 338K | 387K | Aug 2024 – Jul 2026 |
| Allar-Callaway 27R O-10-62201 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 301K | 438K | Sep 2024 – Jul 2026 |
| Madison-Callaway 27D O-10-62221 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 269K | 288K | Sep 2024 – Jul 2026 |
| Allar-Callaway 27N O-10-62063 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 190K | 191K | Aug 2024 – Jul 2026 |
| Madison-Callaway 27H O-10-61940 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 185K | 221K | Aug 2024 – Jul 2026 |
| Allar-Callaway 27M O-10-62202 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 178K | 302K | Sep 2024 – Jul 2026 |
| Allar-Callaway 27O O-10-62203 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 177K | 266K | Sep 2024 – Jul 2026 |
| Allar-Callaway 27L O-10-61928 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 165K | 211K | Jul 2024 – Jul 2026 |
| Madison-Callaway 27J O-10-61982 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 160K | 229K | Aug 2024 – Jul 2026 |
| Madison-Callaway 27A O-10-61996 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 157K | 205K | Aug 2024 – Jul 2026 |
| Callaway "34" O-10-38105 | Endeavor Energy Resources L.P. only | Spraberry (Trend Area) | Martin | 3 | 156K | 225K | Dec 2006 – Nov 2022 |
| Madison-Callaway 27I O-10-62218 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 154K | 261K | Sep 2024 – Jul 2026 |
| Allar-Callaway 27Q O-10-61931 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 147K | 188K | Aug 2024 – Jul 2026 |
| Allar-Callaway 27T O-10-62307 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 143K | 200K | Aug 2024 – Jul 2026 |
| Madison-Callaway 27B O-10-62208 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 138K | 174K | Sep 2024 – Jul 2026 |
| Callaway O-3-26265 | Holley Oil Company, LLC only | Giddings (Buda) | Robertson | 1 | 117K | 26K | Oct 2012 – Jul 2026 |
| Madison-Callaway 27C O-10-62206 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 103K | 146K | Sep 2024 – Jul 2026 |
| Callaway-Miller O-11-65923 | Hat Oil & Gas, Inc. only | B. R. C., North (Strawn) | Garza | 1 | 84.9K | 13.1K | Jan 1993 – Jan 1999 |
| Callaway, Gib O-8-11032 | IS Energy, LLC only | Bissett Ranch (Strawn Reef) | — | 1 | 57K | 620 | Jan 1993 – Jul 2026 |
| Callaway, Gib, -B- O-8-8825 | IS Energy, LLC only | Bissett Ranch (Strawn Reef) | — | 2 | 52.8K | 460 | Jan 1993 – Jul 2026 |
| Callaway, C. B. O-11-62550 | Geomark Resources, L.L.C. only | Roaring Springs, W. (Permo-Penn) | Motley | 1 | 43.7K | 146 | Jan 1993 – Jul 2026 |
| Tarzan "a" Callaway O-10-35924 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 1 | 43.6K | 126K | Nov 1998 – Jan 2026 |
| Callaway, P. C. O-4-1584 | Extex Operating Company only | London Gin | — | 1 | 41.4K | 70 | Jan 1993 – Sep 2007 |
| Callaway O-11-64414 | Three Span Oil & Gas, Inc. only | Sharon Ridge (1700) | Scurry | 5 | 29K | 747 | Jan 1993 – Jul 2026 |
| Callaway, Gerald L. O-8-22814 | Lawrence Energy Company only | Brown County Regular | Brown | 10 | 12K | 149 | Jan 1993 – Jul 2026 |
| Herman, Edith O-8-18455 | Callaway Production, LLC only | Brown County Regular | Brown | 4 | 4.18K | 34.3K | Jan 1993 – Jul 2026 |
| Spears,thompson Callaway Lease O-1-1425 | Black Jack Services, L.L.C. only | Rinehart (Austin Chalk) | — | 6 | 4.16K | 59 | Jan 1993 – Sep 2007 |
| Callaway O-8-26744 | Southeastern Resources Corp. only | Bloomquist (Lake Sand) | Stephens | 1 | 3.15K | 189K | Jan 1993 – May 1998 |
| Chambers, Martha O-8-6018 | Callaway Production, LLC only | Brown County Regular | Brown | 4 | 2.93K | 102 | Jan 1993 – Jul 2026 |
| Callaway, W. R. O-13-6996 | Richey, Ray Management Co., Inc. only | Hodge (Conglomerate, Upper) | — | 1 | 2.3K | 26.1K | Jan 1993 – Apr 2008 |
| Dustin O-8-20087 | Callaway Production, LLC only | Brown County Regular | Brown | 2 | 1.63K | 13.5K | Jan 1993 – Jul 2026 |
| Callaway/Marion O-8-29359 | Lawrence Energy Company only | Thrifty, S. (Chappel Reef) | Brown | 1 | 1.4K | 0 | Nov 2003 – Jul 2026 |
| Callaway, P. C. O-4-12399 | Kriken Oil & Gas only | London Gin (4704) | Nueces | 1 | 1.27K | 8 | Oct 1994 – Apr 1996 |
| Callaway O-10-21950 | Parker & Parsley Development Co. only | Spraberry (Trend Area) | — | 1 | 926 | 11.9K | Jan 1993 – Dec 1994 |
| Jamk O-8-16256 | Callaway Production, LLC only | Coleman County Regular | Coleman | 2 | 576 | 118 | Jan 1993 – Jul 2026 |
| Callaway, Gerald L. O-8-23568 | Lawrence Energy Company only | Thrifty, S. (Chappel Reef) | Brown | 2 | 441 | 0 | Jan 1993 – Jul 2026 |
| Callaway O-4-13910 | Sue-Ann Operating, L.C. only | London Gin (Mass. Catahoula) | Nueces | 1 | 292 | 0 | Feb 2014 – Jul 2015 |
| Justice, W.J. O-8-26950 | Callaway Production, LLC only | Coleman County Regular | Coleman | 1 | 261 | 205 | Jun 1993 – Jul 2026 |
| Callaway -A- O-10-22377 | Pacific Exploration Oper Co, LLC only | Spraberry (Trend Area) | — | 0 | 50 | 0 | Aug 2010 – Aug 2010 |
| Callaway, P. S. GU G-13-230082 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 0 | 850K | Dec 2006 – Jul 2026 |
| Callaway G-13-221998 | Upp Operating, LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 0 | 640K | Jul 2006 – Jul 2026 |
| Callaway, W. R. G-13-209731 | Texxol Operating Company, Inc. only | Hodge (Conglomerate, Upper) | — | 1 | 0 | 22.1K | Jul 2005 – May 2022 |
| Callaway, P. S. GU G-13-156382 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 0 | 582K | Nov 1995 – Jul 2026 |
| Callaway G-8-167175 | Petex only | Bloomquist (Lake Sand) | Stephens | 1 | 0 | 897K | Mar 1998 – Jul 2026 |
| Callaway G-8-142753 | Southeastern Resources Corp. only | Stephens County Regular (Gas) | Stephens | 1 | 0 | 8.63K | Jan 1993 – Nov 2000 |
| Callaway G-8-136391 | Petex only | Murff (Lake Sand) | Stephens | 1 | 0 | 96.2K | Jan 1993 – Jul 2026 |
| Callaway, Gerald L. G-8-109090 | Texas Sands Resources, LLC only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 60K | Jan 1993 – Jul 2014 |
| Callaway G-8-103829 | Hexagon Oil and Gas Inc. only | Liberty Oak (Big Saline) | Erath | 1 | 0 | 136K | Jan 1993 – Jul 2026 |
| Callaway G-8-17868 | Safari Resources, LLC only | Lee Ray (Strawn Shallow) | — | 1 | 0 | 274K | Jan 1993 – Jul 2026 |