| Black, Hallie "3A" G-1-225026 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 197 | 287K | Nov 2006 – Apr 2026 |
| Daniels, M. K. III A G-1-181359 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 196 | 327K | Dec 2000 – Apr 2026 |
| Daniel, M. K. G-1-162040 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Val Verde | 1 | 187 | 296K | Feb 1997 – Apr 2026 |
| Freeman G-2-180374 | Fowler Oil & Gas LLC only | Speaks, SW. (Simpson) | Lavaca | 1 | 182 | 4.4M | Oct 2000 – Mar 2026 |
| Meadows-State 10 G-1-161570 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Val Verde | 1 | 179 | 158K | Feb 1997 – Mar 2026 |
| Daniel - State 2 G-1-160490 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Crockett | 1 | 174 | 483K | Oct 1996 – Sep 2024 |
| Halley, S. M. -B- G-10-285348 | Basin Oil & Gas Operating, LLC only | Emperor (Simpson) | Winkler | 1 | 173 | 46K | May 2018 – May 2021 |
| Simpson, B. B. O-13-22234 | Stamper Operating Co., Inc. only | Bryson, East | Jack | 3 | 167 | 4.41K | Jan 1993 – Sep 1994 |
| Mitchell, Myrtle G-1-176092 | WTG Exploration only | Simpson-Mann (Canyon) | Crockett | 1 | 167 | 326K | Feb 2000 – Feb 2024 |
| Daniels, M. K. 112A G-1-181590 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 165 | 373K | Feb 2001 – Apr 2026 |
| Daniel, M. K. "112" G-1-169723 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 163 | 640K | Jul 1998 – Apr 2026 |
| Daniel, M. K. "113" G-1-180061 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 161 | 275K | Nov 2000 – Apr 2026 |
| Simpson, Dale P. O-8-25993 | Simpson, Dale P. only | White Flat (Strawn) | Nolan | 1 | 161 | 3.17K | Jan 1993 – Mar 1994 |
| Daniel, M. K. G-1-161129 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Crockett | 1 | 160 | 334K | Nov 1996 – Apr 2026 |
| Simpson G-13-113479 | Lindemann, James D. only | Bryson (Congl., Middle) | Jack | 1 | 156 | 15.2K | Feb 1993 – Sep 2005 |
| Cone, Rachel "A" O-13-29528 | Eagle Oil & Gas Co. only | Cone (Simpson Dolomite) | Montague | 1 | 153 | 9 | May 1998 – Aug 2001 |
| Simpson 'G' O-2-10772 | Mandarin Oil & Gas Company only | Pridham Lake (Tyng) | Victoria | 1 | 151 | 0 | Dec 2013 – Oct 2019 |
| Daniel, M. K. "112" G-1-169724 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 149 | 598K | Jul 1998 – Apr 2026 |
| Meadows-State 10 G-1-161275 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Val Verde | 1 | 145 | 162K | Jan 1997 – Mar 2026 |
| Simpson O-11-61132 | Quail Operating, Inc. only | Girard (Tannehill) | Dickens | 1 | 144 | 5 | Jan 1993 – Nov 1993 |
| Daniel, M. K. "109" G-1-181891 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 143 | 676K | Feb 2001 – Apr 2026 |
| Daniel, M. K. G-1-185017 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 141 | 527K | Jun 2001 – Apr 2026 |
| Grove, W. H. O-10-19617 | Simpson Oil Company only | Goldsmith (5600) | Ector | 1 | 140 | 21 | Jan 1993 – Apr 1995 |
| Black, Hallie "3" G-1-169725 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 138 | 277K | Aug 1998 – Apr 2026 |
| Daniel, M. K. G-1-182709 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 137 | 282K | Apr 2001 – Apr 2026 |
| Daniel, M. K. "109" G-1-171430 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 128 | 356K | Nov 1998 – Apr 2026 |
| Daniel, M. K. "109" G-1-171429 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 126 | 234K | Nov 1998 – Apr 2026 |
| Black, Hallie "3" G-1-169579 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 126 | 636K | Jul 1998 – Apr 2026 |
| Daniel, M. K. 111 "A" G-1-171459 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 124 | 140K | Dec 1998 – Apr 2026 |
| Black, Hallie "3A" G-1-179955 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 119 | 419K | Sep 2000 – Apr 2026 |
| Meadows-State 10 G-1-161633 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Val Verde | 1 | 117 | 188K | Feb 1997 – Jul 2013 |
| Simpson G-2-203420 | Petro-Hunt, L.L.C. only | Riedel (Wilcox "J" Sand) | De Witt | 1 | 116 | 334K | May 2004 – Mar 2007 |
| Simpson, Lewis G-5-237277 | Comstock Oil & Gas, LLC only | John Amoruso (Bossier) | Robertson | 1 | 114 | 13.1M | Jun 2006 – Apr 2026 |
| Meadows-State 2 G-1-160611 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Val Verde | 1 | 110 | 292K | Oct 1996 – Mar 2026 |
| Simpson, B. B. G-13-151177 | Bry-Tex Partners, LLC only | Bryson, East | Jack | 1 | 108 | 27.7K | Aug 1994 – Jul 2018 |
| Daniel, M. K. "110" G-1-180062 | Occidental Permian EOR, LLC only | Simpson-Mann (Canyon) | Crockett | 1 | 104 | 242K | Nov 2000 – Apr 2026 |
| Daniel, M. K. G-1-184777 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Val Verde | 1 | 103 | 327K | Jul 2001 – Apr 2026 |
| Daniel State 2 G-1-181818 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Crockett | 1 | 92 | 160K | Feb 2001 – Jul 2023 |
| Daniel, M. K. G-1-185015 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 91 | 547K | Jun 2001 – Mar 2026 |
| Daniel State "2" G-1-179614 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Crockett | 1 | 89 | 385K | Oct 2000 – Mar 2026 |
| Daniel, M. K. "A" G-1-177345 | Wolfcamp Energy, LLC only | Simpson-Mann (Canyon) | Crockett | 1 | 84 | 572K | Apr 2000 – Mar 2026 |
| Black, Hallie 3 G-1-182710 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 84 | 286K | Apr 2001 – Apr 2026 |
| Daniel, M. K. "110" G-1-171457 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 83 | 306K | Nov 1998 – Apr 2026 |
| Simpson Federal G-6-108875 | Rosetta Energy Partners, L.P. only | Mei (Pettit) | Shelby | 1 | 82 | 143K | Jan 1993 – Jun 2002 |
| Black, Hallie 108 G-1-185018 | Longfellow Energy, LP only | Simpson-Mann (Canyon) | Crockett | 1 | 79 | 389K | Jul 2001 – Nov 2025 |
| Pilgreen G-2-171772 | Dominion Oklahoma Texas E&P, Inc only | Speaks, SW. (Simpson) | Lavaca | 1 | 74 | 22K | Dec 1998 – Jan 2000 |
| Daniel, M. K. 112 "A" G-1-180819 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 74 | 201K | Dec 2000 – Apr 2026 |
| Black, Hallie "3A" G-1-225149 | Occidental Permian EOR, LLC only | Simpson-Mann (Canyon) | Crockett | 1 | 73 | 458K | Oct 2006 – Apr 2026 |
| Migl-Quinn G-2-254732 | Karper Oil & Gas Corporation only | Speaks, SW. (Simpson) | Lavaca | 1 | 72 | 532K | Nov 2008 – Nov 2019 |
| Daniel, M. K. "112" G-1-169722 | Hilcorp Energy Company only | Simpson-Mann (Canyon) | Crockett | 1 | 71 | 357K | Aug 1998 – Apr 2026 |