| Simpson-Mann "B" O-9-12350 | Core Petro, LLC only | Atkinson, W. (San Angelo) | Tom Green | 6 | 17.2K | 38 | Jan 1993 – Apr 2026 |
| Atkinson, W. B. "A" O-9-14074 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 5 | 17K | 151K | Nov 1995 – Dec 2018 |
| M K Graham '992' O-8-30694 | S.B. Street Operating, Inc. only | Parrott-Atkinson (Mississippian) | Throckmorton | 1 | 14.2K | 0 | Mar 2011 – Apr 2022 |
| Atkinson, W. B. "B" O-9-6604 | Parker & Parsley Development L.P only | Calvin (Dean) | Reagan | 5 | 14K | 104K | Jan 1993 – Oct 1995 |
| Tweedy "AF" O-9-10109 | Swartz Oil Company only | Atkinson, W. (San Angelo) | Tom Green | 13 | 12.8K | 216 | Jan 1993 – Feb 1996 |
| Atkinson, W. B. -C- O-9-14077 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Glasscock | 2 | 12.6K | 133K | Nov 1995 – Oct 2015 |
| Atkinson, J. W. -A- O-1-13986 | Ocean Energy, Inc. only | Loma Alta, North (3900 Yegua) | McMullen | 1 | 12.4K | 4.28K | Aug 1995 – Jul 1999 |
| Atkinson O-1-14634 | Cimarron Engineering, LLC only | Loma Alta | McMullen | 1 | 12.4K | 0 | Sep 2005 – Jul 2015 |
| Atkinson, W. B. "A" O-9-6617 | Parker & Parsley Development L.P only | Calvin (Dean) | Glasscock | 5 | 11.2K | 68.2K | Jan 1993 – Oct 1995 |
| Atkinson O-9-11075 | Bustamante Oil Company only | Irion, W. (Canyon) | Irion | 6 | 10.5K | 328K | Jan 1993 – Oct 2022 |
| Guinn O-9-10363 | Core Petro, LLC only | Atkinson, W. (San Angelo) | Tom Green | 5 | 9.96K | 38 | Jan 1993 – Apr 2026 |
| St 127 O-3-24991 | Whitson, James A., Jr. only | Atkinson Island (Frio) | Chambers | 1 | 8.5K | 76.5K | Nov 2006 – Apr 2008 |
| State Tract 126 A O-3-25408 | Linc Gulf Coast Petroleum, Inc. only | Atkinson Island (Frio) | Chambers | 2 | 8.36K | 42.4K | Dec 2009 – Jun 2013 |
| Johns, Ham, Fee O-1-3791 | Atkinson, L. G., LLC only | Luling-Branyon | Caldwell | 10 | 7.78K | 34 | Jan 1993 – Apr 2001 |
| Atkinson Family G-2-296157 | Kebo Oil & Gas, Inc. only | Lagarto, West (1ST Yegua) | Jim Wells | 1 | 7.37K | 206K | Dec 2023 – Apr 2026 |
| Rippstein O-2-7988 | Lodestone Operating, Inc. only | Atkinson, W. (Ryan) | Live Oak | 1 | 6.81K | 30.3K | Jul 1994 – Feb 2001 |
| Simpson-Mann "A" O-9-12127 | Core Petro, LLC only | Atkinson, W. (San Angelo) | Tom Green | 6 | 6.03K | 32 | Jan 1993 – Apr 2026 |
| Atkinson, V. O-3-9374 | B. C. Ventures, Inc. only | Amelia (Frio 1) | Jefferson | 1 | 5.89K | 368 | Jan 1993 – Aug 1997 |
| Atkinson, W. B. -C- O-9-6829 | Parker & Parsley Development L.P only | Calvin (Dean) | Glasscock | 2 | 5.84K | 23.2K | Jan 1993 – Oct 1995 |
| Atkinson G-14-157865 | Presidio Petroleum LLC only | Hemphill (Granite Wash.) | Hemphill | 1 | 5.77K | 1.42M | Oct 1995 – Apr 2026 |
| Simpson-Mann O-9-9811 | Armor Petroleum, Inc. only | Atkinson, W. (San Angelo) | Tom Green | 4 | 5.68K | 38 | Jan 1993 – Sep 2006 |
| Lackey, V. O-1-6684 | Atkinson, L. G., LLC only | Luling-Branyon | Caldwell | 6 | 4.58K | 6.15K | Jan 1993 – Apr 2001 |
| Grace Atkinson "A" O-8-17164 | Furry Producing Company only | Brown County Regular | Brown | 1 | 4.44K | 16 | Feb 1993 – Nov 2025 |
| Atkinson O-1-14453 | Devon Energy Production Co, L.P. only | Loma Alta (4070) | McMullen | 1 | 4.38K | 0 | Jun 2003 – Jan 2005 |
| Atkinson, Orvis O-6-11391 | Long Trusts, The only | Toolan (Pettit, Lower) | Nacogdoches | 1 | 4.23K | 71.5K | Jan 1993 – Dec 2016 |
| Atkinson, J. W. O-1-971 | Carburante Exploration Co, Ltd. only | Loma Alta | McMullen | 1 | 3.75K | 27 | Jan 1993 – May 2016 |
| Atkinson, Jim Tobe et Al O-2-8108 | Republic Resources, LLC. only | Green (Recklaw 6315) | Karnes | 1 | 3.45K | 2.85K | Oct 1995 – Jan 2001 |
| Atkinson-Wells O-8-25702 | Momentum Oil Company only | Stephens County Regular | Throckmorton | 1 | 3.37K | 44 | Jan 1993 – Apr 1999 |
| Atkinson, W. B. O-9-6489 | Stephens, Autry C. only | Calvin (Dean) | Reagan | 1 | 3.17K | 25.2K | Jan 1993 – Oct 1995 |
| Atkinson, J.W. "B" O-1-5812 | Breck Operating Corp. only | Loma Alta (Wilcox) | McMullen | 2 | 3.03K | 21 | Jan 1993 – Nov 1994 |
| Atkinson B O-8-26694 | Furry Producing Company only | Kyzar (Fry) | Brown | 7 | 2.82K | 19 | Jan 1993 – Jun 2001 |
| Parrott "392" O-8-26813 | Guinn Investments, Inc. only | Parrott-Atkinson (Mississippian) | Throckmorton | 1 | 2.65K | 785 | Jan 1993 – Jan 1995 |
| Ryan O-9-11167 | Armor Petroleum, Inc. only | Atkinson, W. (San Angelo) | Tom Green | 2 | 2.32K | 38 | Jan 1993 – Oct 1999 |
| Atkinson O-9-3750 | Patno Oil & Gas Company only | Atkinson, NE. (San Angelo) | Tom Green | 1 | 2.3K | 20 | Jan 1993 – Jan 2014 |
| Atkinson, Mary E. G-2-3970 | Marwell Petroleum Ltd Partnrship only | Richard Adcock (5500) | Victoria | 1 | 1.96K | 584K | Jan 1993 – Apr 2026 |
| Atkinson Island Unit G-3-126202 | Torrent Oil LLC only | Atkinson Island (Cons.) | Chambers | 1 | 1.95K | 289K | Apr 2001 – Feb 2011 |
| Love, J. F. -a- /Shallow/ O-13-5810 | Atkinson, Jim only | Wichita County Regular | Wichita | 3 | 1.88K | 16 | Jan 1993 – May 2017 |
| Atkinson, R. A. O-1-4617 | Texas Southern Petroleum Corp. only | Merle (Jackson) | McMullen | 1 | 1.84K | 96 | Jan 1993 – Apr 2002 |
| Atkinson, Mary et Al G-2-151540 | Klotzman, M. S. Exploration Co. only | Richard Adcock (5200 Yegua) | Victoria | 1 | 1.74K | 360K | Sep 1994 – Mar 2014 |
| Bibb O-8-26193 | Guinn Investments, Inc. only | Parrott-Atkinson (Mississippian) | Throckmorton | 1 | 1.65K | 3.72K | Jan 1993 – Aug 1994 |
| Atkinson-McConnell O-13-23783 | Stephens & Johnson Operating Co. only | Teresa (5065) | Jack | 1 | 1.62K | 53.5K | Jan 1993 – May 2004 |
| Moody-Atkinson Unit G-13-267880 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 1.55K | 132K | Oct 2012 – May 2015 |
| Love, J. F. A O-13-6300 | Atkinson, Jim only | K-M-A | Wichita | 1 | 1.43K | 15 | Jan 1993 – Oct 2016 |
| Winterbotham TXP O-9-14148 | Swartz Oil Company only | Atkinson, W. (San Angelo) | Irion | 1 | 1.38K | 0 | Dec 1995 – Nov 1996 |
| Atkinson - Parrott Unit O-8-20380 | Bettis, Boyle & Stovall only | Throckmorton County Regular | Throckmorton | 1 | 1.3K | 19 | Jan 1993 – May 1995 |
| Atkinson G-14-58832 | Presidio Petroleum LLC only | Hemphill (Granite Wash.) | Hemphill | 1 | 1.11K | 318K | Apr 1993 – Aug 2008 |
| Bassett, Kathleen Ann Carnes O-2-7330 | Delray Oil, Inc. only | J.L.B. (Atkinson) | Karnes | 1 | 1.08K | 313 | Jan 1993 – Jun 1994 |
| Frost National Bank Trustee G-2-100239 | Atkinson, Clifford III only | Ray Point, West | Live Oak | 1 | 1.01K | 128K | Jan 1993 – Mar 1995 |
| Atkinson, Warren G-1-149331 | Miller, W. C. Operating Company only | Sling (Slick "a" Sand) | McMullen | 1 | 853 | 59.5K | Apr 1994 – Oct 1995 |
| Simpson-Mann "C" O-9-12217 | Core Petro, LLC only | Atkinson, W. (San Angelo) | Tom Green | 1 | 811 | 32 | Jan 1993 – Apr 2026 |