| Yturria, H. O-4-13071 | Apollo Petro Fuels LLC only | Raymondville (Consolidated) | Willacy | 3 | 445K | 919K | Feb 2002 – Jan 2025 |
| Erwin-Murray 45C O-10-58477 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 444K | 661K | Oct 2022 – Apr 2026 |
| Snyder, B. S. -C- O-10-6219 | Grayrock Energy II, LLC only | Snyder | Howard | 39 | 443K | 34K | Jan 1993 – Apr 2026 |
| Chapman -C- O-14-520 | Rio Petroleum, Inc. only | Panhandle Gray County Field | Gray | 1 | 442K | 17.9K | Jan 1993 – Apr 2026 |
| Erwin-Murray 45D O-10-58232 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 439K | 480K | Oct 2022 – Apr 2026 |
| Ray 3427 G O-10-53534 | Diamondback E&P LLC only | Spraberry (Trend Area) | Glasscock | 1 | 434K | 1.15M | Aug 2019 – Apr 2026 |
| Frymire Waterflood Unit O-8-26877 | Grayrock Energy II, LLC only | Lake Trammel, W. (Canyon) | Nolan | 21 | 431K | 99.9K | May 1993 – Apr 2026 |
| Settles, W. R. O-10-41272 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 47 | 426K | 0 | Dec 2011 – Apr 2026 |
| Rayes A-Ciaccio a SA 3 G-2-298554 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 422K | 1.99M | Apr 2025 – Apr 2026 |
| Raymond Glasscock 5G O-10-48292 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 421K | 1.03M | Nov 2016 – Apr 2026 |
| Combs-Worley -A- O-14-614 | Bce-Mach III LLC only | Panhandle Gray County Field | Gray | 18 | 420K | 1.01M | Jan 1993 – Apr 2026 |
| Erwin-Murray 45A O-10-58067 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 420K | 676K | Oct 2022 – Apr 2026 |
| Rayburn-Baumann W16R O-10-50751 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 417K | 1.21M | May 2018 – Apr 2026 |
| Jackson, Wm. O-14-598 | Ponderosa TX Operating LLC only | Panhandle Gray County Field | Gray | 13 | 416K | 1.24M | Jan 1993 – Apr 2026 |
| Rayes a - Pokluda a SA 4 G-2-285664 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 413K | 2.1M | Sep 2018 – Apr 2026 |
| Ray-Winkleman C43D O-10-61645 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 408K | 647K | Jun 2024 – Apr 2026 |
| Von Blucher G-4-136027 | Urban Oil & Gas Group, LLC only | Brayton, N. (Vicksburg 11100) | Nueces | 1 | 404K | 5.19M | Jan 1993 – Apr 2017 |
| Ray Reed 33A O-9-21162 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 1 | 400K | 1.32M | May 2021 – Apr 2026 |
| Erwin-Murray 45J O-10-58036 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 399K | 631K | Sep 2022 – Apr 2026 |
| Ray Reed 33E O-9-21209 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 1 | 399K | 3.8M | May 2021 – Apr 2026 |
| Fasken O-10-23406 | Fasken Oil and Ranch, Ltd. only | Serio (Grayburg) | Andrews | 8 | 397K | 39K | Jan 1993 – Mar 2016 |
| Ray Reed 33B O-9-21163 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Upton | 1 | 395K | 1.32M | May 2021 – Apr 2026 |
| Ray-Winkleman C43A O-10-61592 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 394K | 756K | Jun 2024 – Apr 2026 |
| Ray-Winkleman C43C O-10-61024 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 393K | 1.05M | Jun 2024 – Apr 2026 |
| House, E. O-11-5741 | Grayrock Energy II, LLC only | Sharon Ridge (1700) | Scurry | 13 | 393K | 22 | Jan 1993 – Apr 2026 |
| Rayes a - Pokluda a SA 5 G-2-285885 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 393K | 2.06M | Sep 2018 – Apr 2026 |
| Gray, Columbus O-10-36975 | Basin Oil & Gas Operating, LLC only | Deep Rock (Penn.) | Andrews | 5 | 392K | 136K | Sep 2002 – Apr 2026 |
| Murray, A. B. O-11-293 | Leclair Operating, L.L.C. only | Anton-Irish | Lubbock | 2 | 392K | 21 | Jan 1993 – Apr 2026 |
| Texas -Y- O-9-4156 | L & M Operating, Inc. only | Price (Grayburg) | Reagan | 24 | 392K | 437K | Jan 1993 – Apr 2026 |
| Ray 3427 D O-10-53033 | Diamondback E&P LLC only | Spraberry (Trend Area) | Glasscock | 1 | 390K | 1.42M | May 2019 – Apr 2026 |
| Schendel-E Gray Usw C O-2-12929 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Karnes | 1 | 390K | 1.31M | Aug 2024 – Apr 2026 |
| Wright, Carrie O-14-250 | Ponderosa TX Operating LLC only | Panhandle Gray County Field | Gray | 23 | 388K | 877K | Jan 1993 – Apr 2026 |
| University O-10-35931 | Energen Resources Corporation only | Block 2 (Grayburg) | Andrews | 4 | 382K | 0 | Nov 1998 – Jun 2003 |
| Texaco Fee "B" G-3-212211 | Ballard Exploration Company,inc. only | Raywood (East Cook Mountain) | Liberty | 1 | 381K | 7.31M | Oct 2005 – May 2008 |
| Stevie Ray E Allocation O-10-56667 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Martin | 1 | 379K | 576K | Sep 2021 – Apr 2026 |
| Pokluda a - Rayes a (AW) G-2-261095 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 378K | 2.38M | Apr 2011 – Apr 2026 |
| Rayes B - Gwosdz a SA O-2-11175 | BPX Operating Company only | Eagleville (Eagle Ford-2) | De Witt | 1 | 378K | 1.17M | Jan 2017 – Apr 2026 |
| Hickman, N. W. O-9-10739 | WTG Exploration only | Price (Grayburg) | Reagan | 29 | 378K | 457K | Jan 1993 – Apr 2026 |
| Waggoner Grayback SE O-13-34315 | Waggoner Operating, L.L.C. only | Wilbarger County Regular | Wilbarger | 56 | 375K | 0 | Apr 2023 – Mar 2026 |
| Grayling 1-69 O-10-43242 | TRP Operating LLC only | Two Georges (Bone Spring) | Loving | 4 | 374K | 4.25M | Oct 2012 – Apr 2026 |
| Murray C O-10-2893 | Bce-Mach III LLC only | Iatan, East Howard | Howard | 12 | 374K | 17.5K | Jan 1993 – Apr 2026 |
| Schendel-E Gray Usw D O-2-12930 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Karnes | 1 | 374K | 1.17M | Aug 2024 – Apr 2026 |
| University -198- O-10-20292 | XTO Energy Inc. only | Triple-N (Grayburg) | Andrews | 6 | 371K | 169K | Jan 1993 – Jan 2023 |
| Ray, George A. O-2-8260 | Atlas Operating LLC only | Pettus | Bee | 19 | 367K | 19K | Mar 1997 – Mar 2026 |
| Raymore 1-46 Unit 2 O-10-44055 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 366K | 959K | May 2013 – Apr 2026 |
| Saunders, G. H. O-14-650 | Large Operating LLC only | Panhandle Gray County Field | Gray | 56 | 365K | 167K | Jan 1993 – Apr 2026 |
| Grayleaf 1H O-1-18748 | Rosewood Resources, Inc. only | Briscoe Ranch (Eagleford) | Frio | 1 | 363K | 80.7K | Mar 2016 – Apr 2026 |
| Jackson, Wm. O-14-331 | Mon Corp. only | Panhandle Gray County Field | Gray | 10 | 362K | 817K | Jan 1993 – Apr 2026 |
| Edith Gray - Schendel Usw G O-2-11922 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Karnes | 1 | 361K | 950K | Sep 2019 – Apr 2026 |
| TXL, B. S. -D- O-10-6195 | Grayrock Energy II, LLC only | Snyder | Howard | 18 | 360K | 34.8K | Jan 1993 – Apr 2026 |