| Wharton Unit O-11-61365 | Bce-Mach III LLC only | Harris | Gaines | 212 | 13.5M | 3.84M | Jan 1993 – Jul 2026 |
| South Harris Unit O-11-60711 | Bce-Mach III LLC only | Harris | Gaines | 117 | 4.96M | 1.43M | Jan 1993 – Jul 2026 |
| Harris San Andres Unit O-11-69347 | Parallel Petroleum LLC only | Harris (San Andres) | Gaines | 88 | 4.06M | 247K | Jun 2002 – Jul 2026 |
| Harris, T. B. & T. D. O-7-6952 | Basa Resources, Inc. only | East Texas | — | 35 | 3.05M | 1.06M | Jan 1993 – Jul 2026 |
| Harris, T. B. O-7-6113 | ZTH Operating, LLC only | East Texas | — | 19 | 1.86M | 919K | Jan 1993 – Jul 2026 |
| Harrison, W. Lee Unit O-11-60663 | Raw Oil & Gas, Inc. only | Lee Harrison | Lubbock | 39 | 1.75M | 81.1K | Jan 1993 – Jul 2026 |
| Harrison, Lee Unit O-11-60378 | Cross Timbers Energy, LLC only | Lee Harrison | Lubbock | 44 | 1.67M | 5.22K | Jan 1993 – Jul 2026 |
| Harris, T. B. (Conoco) O-7-6426 | Zivney Energy only | East Texas | — | 16 | 1.36M | 566K | Jan 1993 – Jul 2026 |
| Carm-Ann San Andres Unit O-11-69623 | Parallel Petroleum LLC only | Harris (San Andres) | Gaines | 92 | 1.33M | 344K | Jun 2002 – Jul 2026 |
| Harris Unit 23-26 O-10-47678 | Surge Operating, LLC only | Spraberry (Trend Area) | Borden | 6 | 1.28M | 2.3M | Dec 2015 – Jul 2026 |
| Harris, T. B. (Texaco) O-7-7959 | Bbhp Oilfield Services LLC only | East Texas | — | 13 | 1.05M | 385K | Jan 1993 – Jul 2026 |
| Harris O-1-18661 | Texas American Resources Company only | Eagleville (Eagle Ford-1) | Atascosa | 8 | 1.01M | 966K | Sep 2015 – Jul 2026 |
| Harris-Cook 80 O-10-49433 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 5 | 951K | 6.77M | Nov 2017 – Jul 2026 |
| Shusa "15" O-11-68612 | Zarvona Energy LLC only | Harris (San Andres) | Gaines | 23 | 948K | 72.4K | Aug 2003 – Jul 2026 |
| Harris-Cook 70 O-10-50853 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 5 | 879K | 8.51M | Sep 2018 – Jul 2026 |
| Harris-Cook 50 O-10-51128 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 879K | 6.7M | Oct 2018 – Jul 2026 |
| Harris, T. B. -C- O-7-7761 | ZTH Operating, LLC only | East Texas | — | 12 | 848K | 256K | Jan 1993 – Jul 2026 |
| Sides Unit O-11-68955 | Cross Timbers Energy, LLC only | Lee Harrison | Lubbock | 57 | 833K | 0 | Aug 2006 – Jul 2026 |
| Elam, WB O-11-68515 | Parallel Petroleum LLC only | Harris (San Andres) | Gaines | 13 | 798K | 92.1K | Jun 2002 – Jul 2026 |
| North Robertson San Andres Unit O-11-71163 | Citation Oil & Gas Corp. only | Harris (San Andres) | Gaines | 78 | 797K | 519K | Feb 2020 – Jul 2026 |
| Harris-Cook 60 O-10-51040 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 784K | 6.47M | Oct 2018 – Jul 2026 |
| Tetens "A" O-11-67910 | Free Rein Operating LLC only | Harris (San Andres) | Gaines | 7 | 766K | 37.9K | Feb 1998 – Jul 2026 |
| Harris, T. B., Etal O-7-6821 | Chevron U. S. A. Inc. only | East Texas | — | 12 | 746K | 263K | Jan 1993 – May 2004 |
| Harris, T. B. O-7-7766 | Basa Resources, Inc. only | East Texas | — | 6 | 736K | 234K | Jan 1993 – Jul 2026 |
| Harris 17-20-A O-10-55189 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 2 | 731K | 3.18M | Jun 2019 – Jul 2026 |
| Harrison Interests, Ltd. "A" O-3-7474 | DJH Oil & Gas LLC only | Hankamer (Miocene Sand) | Liberty | 35 | 695K | 49.9K | Jan 1993 – Jul 2026 |
| Harris-Hutchison 80 O-10-47647 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 661K | 3.02M | Jun 2015 – Jul 2025 |
| Flanagan O-11-2478 | OXY USA WTP EOR, LLC only | Harris | Gaines | 7 | 623K | 57.2K | Jan 1993 – Jul 2026 |
| Harris-Hutchison 50 O-10-46568 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 618K | 3.15M | Feb 2015 – Jul 2025 |
| Harris, T. B. -B- O-7-7760 | Etf Operating, LLC only | East Texas | — | 8 | 607K | 177K | Jan 1993 – Jul 2026 |
| Harris 17-20-C O-10-55187 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) R 40 Exc | Midland | 2 | 566K | 2.83M | Jul 2019 – Jul 2026 |
| Pontius-Barksdale O-11-68333 | Parallel Petroleum Corporation only | Harris (San Andres) | Gaines | 21 | 565K | 148K | Jul 2001 – Jun 2009 |
| Baggett, Debbie O-11-68386 | Parallel Petroleum Corporation only | Harris (San Andres) | Gaines | 31 | 555K | 48.6K | Dec 2001 – Jun 2009 |
| Harris-Hutchison 70 O-10-47381 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 549K | 3.66M | Oct 2015 – Aug 2025 |
| Harrison 29-28 O-10-45559 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 549K | 974K | Jun 2014 – Jul 2026 |
| Kentex-Harrison 35A O-10-54099 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 541K | 647K | Jan 2020 – Jul 2026 |
| Harrison -A- O-7-6371 | Basa Resources, Inc. only | East Texas | Gregg | 7 | 511K | 268K | Jan 1993 – Jul 2026 |
| Kentex-Harrison 35C O-10-54345 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 500K | 709K | Feb 2020 – Jul 2026 |
| Harrison 29-30 O-10-47447 | Anadarko E&P Onshore LLC only | Phantom (Wolfcamp) | Loving | 1 | 500K | 1.02M | Dec 2015 – Jul 2026 |
| Shusa "14" O-11-68611 | Zarvona Energy LLC only | Harris (San Andres) | Gaines | 14 | 486K | 81.7K | Aug 2003 – Jul 2026 |
| Jenkins Unit O-11-71103 | Bce-Mach III LLC only | Harris (San Andres) | Gaines | 38 | 484K | 175K | Mar 2020 – Jul 2026 |
| Harris-Hutchison 60 O-10-47431 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Glasscock | 4 | 465K | 2.49M | Oct 2015 – Aug 2025 |
| Tetens, J. O-11-66051 | Bce-Mach III LLC only | Harris | Gaines | 5 | 454K | 47.8K | Jan 1993 – Jul 2026 |
| Link O-11-60887 | Zarvona Energy LLC only | Harris | Gaines | 5 | 441K | 207K | Jan 1993 – Jul 2026 |
| Harrison Forrest Oil Unit O-3-26416 | Empire Texas Operating LLC only | Fort Trinidad, East (Buda) | Madison | 7 | 430K | 900K | Jun 2013 – Jul 2026 |
| Kentex-Harrison 35B O-10-54416 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 412K | 813K | Feb 2020 – Jul 2026 |
| Blackwatch (San Andres) Unit O-11-71090 | Bce-Mach III LLC only | Harris (San Andres) | Gaines | 20 | 404K | 305K | Mar 2020 – Jul 2026 |
| Harris 17-20E O-10-57580 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Midland | 1 | 403K | 1.45M | Feb 2022 – Jul 2026 |
| Harris North B Unit O-1-21132 | Texas American Resources Company only | Eagleville (Eagle Ford-1) | Atascosa | 3 | 376K | 364K | Jul 2023 – Jul 2026 |
| Kastman Oil Company, LLC O-11-62348 | Kastman Oil Company, LLC only | Lee Harrison | Lubbock | 6 | 370K | 217 | Jan 1993 – Jul 2026 |