| McClellan-Wilson O-13-26925 | Corda Corporation only | Lawler (Chappel) | Hardeman | 1 | 408K | 19 | Jan 1993 – Jul 2026 |
| McClellan, Joe O-13-29389 | Corda Corporation only | Medicine Mounds, SE (Miss) | Hardeman | 1 | 323K | 0 | Sep 1997 – Jul 2026 |
| McClellan B O-13-27019 | Decleva, Paul only | Lawler (Chappel) | Hardeman | 1 | 71.2K | 19 | Jan 1993 – Nov 2016 |
| McClellan-Swofford Unit O-13-30128 | Corda Corporation only | Medicine Mounds, SE (Miss) | Hardeman | 1 | 57.5K | 0 | Feb 2003 – Jul 2026 |
| McClellan, Joe D. O-13-12862 | Buffco Production Inc. only | Medicine Mounds (Congl. 7430) | Hardeman | 2 | 49.3K | 21 | Jan 1993 – Jul 2026 |
| McClellan /S & T/ O-1-1210 | Can't Complain Operating Co. only | Minerva-Rockdale | Milam | 22 | 41K | 100 | Jan 1993 – Jul 2026 |
| McClellan, Joe D. O-13-12236 | Buffco Production Inc. only | Medicine Mounds (Miss.) | Hardeman | 1 | 37.1K | 21 | Jan 1993 – Feb 2017 |
| Percival O-14-97 | McClelland Creek Properties,inc. only | Panhandle Carson County Field | Carson | 5 | 35.4K | 51.8K | Jan 1993 – Jul 2026 |
| Moore-Langdon O-14-703 | McClelland Creek Properties,inc. only | Panhandle Hutchinson County Fld. | Hutchinson | 9 | 27.6K | 41.3K | Jan 1993 – Jul 2026 |
| Pitcher O-14-959 | McClelland Creek Properties,inc. only | Panhandle Hutchinson County Fld. | — | 13 | 23.9K | 81.6K | Jan 1993 – Jul 2026 |
| McLellan, C. S. Etal O-10-15270 | Wind River Energy, Inc. only | Sand Hills (Judkins) | — | 3 | 22.2K | 24 | Jan 1993 – Jul 2026 |
| McClellan O-13-30491 | Buffco Production Inc. only | Medicine Mounds (Congl. 7430) | Hardeman | 1 | 19.7K | 0 | Aug 2004 – Jul 2026 |
| Percival -A- O-14-32 | McClelland Creek Properties,inc. only | Panhandle Carson County Field | — | 2 | 18.1K | 18.8K | Jan 1993 – Jul 2026 |
| McClellan "A" O-14-5377 | Sandlot Oil & Gas LLC only | Gruver, NW (Morrow, UP) | Hansford | 1 | 17.8K | 13K | Jan 1993 – Jul 2026 |
| McLellan O-8-32575 | Ics Energy LLC only | Lueders, S. (King Sand) | Jones | 6 | 17.8K | 0 | Dec 2021 – Jul 2026 |
| McClellan O-13-34258 | Trio Consulting & Management,llc only | Searcys (Miss) | Hardeman | 1 | 16.6K | 0 | Jan 2024 – Jul 2026 |
| Heidaja O-14-4824 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | Gray | 3 | 14.8K | 1.02M | Jan 1993 – Jul 2026 |
| Sheridan O-14-4802 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | Gray | 2 | 14.6K | 410K | Jan 1993 – Jul 2026 |
| Chrisga O-14-4759 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | Gray | 8 | 14.5K | 545K | Jan 1993 – Jul 2026 |
| Langham O-14-4862 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | Gray | 1 | 13.8K | 77.9K | Jan 1993 – Jul 2026 |
| Percival-Gamar O-14-173 | McClelland Creek Properties,inc. only | Panhandle Carson County Field | — | 2 | 13.3K | 42.6K | Jan 1993 – Jul 2026 |
| McClellan -C- O-1-1209 | Can't Complain Operating Co. only | Minerva-Rockdale | Milam | 9 | 10.8K | 100 | Jan 1993 – Jul 2026 |
| Block, B. F. O-14-76 | McClelland Creek Properties,inc. only | Panhandle Carson County Field | — | 3 | 10.1K | 56.8K | Jan 1993 – Jul 2026 |
| Benedict O-14-3416 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | — | 1 | 9.91K | 21 | Jan 1993 – Jul 2026 |
| Kajanca O-14-4751 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | Gray | 6 | 9.78K | 471K | Jan 1993 – Jul 2026 |
| McCray, C. E., et UX O-14-1564 | McClelland Creek Properties,inc. only | Panhandle Carson County Field | — | 5 | 9.25K | 199K | Jan 1993 – Jul 2026 |
| Stevenson, Mittie O-14-1341 | McClelland Creek Properties,inc. only | Panhandle Hutchinson County Fld. | Hutchinson | 5 | 9.11K | 235K | Jan 1993 – Jul 2026 |
| McClellan-Phillips O-13-29790 | Ashtola Exploration Company,inc. only | Kadane Cato (Congl) | Hardeman | 1 | 8.7K | 16.7K | Aug 2000 – Dec 2002 |
| Cobb O-14-4965 | McClelland Creek Properties,inc. only | Panhandle Gray County Field | Gray | 3 | 8.65K | 614K | Jan 1993 – Jul 2026 |
| Schwarz O-3-9647 | McLelland Engineering & Mgmt. only | Cottonwood, SW. (Frio 2) | — | 1 | 7.67K | 21 | Jan 1993 – Mar 1999 |
| Willis Estate O-3-9796 | McLelland Engineering & Mgmt. only | Cottonwood, SW. (Frio 2) | — | 1 | 7.59K | 21 | Jan 1993 – Mar 1999 |
| McClelland O-2-9650 | Dewbre Petroleum Corporation only | Oakville (Pettus -C-) | Live Oak | 1 | 6.45K | 0 | Jul 2011 – Nov 2016 |
| McClelland, J.W. O-2-8070 | Samson Resources Company only | Limes (Wilcox 7900) | Live Oak | 1 | 6.42K | 2.35K | May 1994 – Jul 1995 |
| Percival, F. E. "B" O-14-4930 | McClelland Creek Properties,inc. only | Panhandle Carson County Field | Carson | 1 | 5.12K | 169 | Jan 1993 – Jul 2026 |
| McClellan O-14-9741 | Questa Energy Corporation only | Gruver, NW (Morrow, UP) | Hansford | 1 | 3.54K | 187 | Apr 2019 – Jul 2026 |
| McClellan O-14-4597 | 4P Energy Texas, LLC only | Gruver, NW (Morrow, UP) | Hansford | 6 | 3.12K | 137K | Jan 1993 – Jan 2019 |
| Noel, J. L. O-14-151 | McClelland Creek Properties,inc. only | Panhandle Carson County Field | — | 1 | 2.83K | 2.98K | Jan 1993 – Jul 2026 |
| McClelland O-13-29458 | Pittman Operating Company only | Lester | Jack | 1 | 2.62K | 0 | Jan 1998 – Aug 2003 |
| McClellan O-13-21987 | S.B. Street Operating, Inc. only | Cottle (Bend Conglomerate) | Young | 1 | 1.93K | 56.1K | Jan 1993 – Jun 2010 |
| Bivins O-14-5882 | McClelland Creek Properties,inc. only | Panhandle (Red Cave) | Moore | 7 | 1.26K | 60.8K | Jan 1993 – Sep 1999 |
| McClellan-Wilson "S" O-13-25470 | Farrex, Inc. only | G.B.D. Hoc (Meramec) | Hardeman | 1 | 1.17K | 187 | Jan 1993 – Aug 2003 |
| McClellan O-14-4293 | Jenex Operating Company of Texas only | Gruver, NW (Morrow, UP) | Hansford | 1 | 893 | 14 | Jan 1993 – Sep 1995 |
| McClelland O-13-32832 | Borderline Operating Corp. only | KRS (Marble Falls) | Jack | 1 | 607 | 33.3K | Nov 2013 – Nov 2021 |
| Clell O-14-1256 | C & C Oil Producers only | Panhandle Hutchinson County Fld. | — | 11 | 110 | 0 | Jan 1993 – Mar 2008 |
| McClellan O-14-4682 | Samson Resources Company only | Gruver, NW (Morrow, UP) | Hansford | 1 | 13 | 3.82K | Jan 1993 – May 1994 |
| McClelland, J. W. G-2-154210 | Samson Lone Star LP only | Limes (Wilcox 7900) | Live Oak | 1 | 0 | 633K | Dec 1994 – Oct 1998 |
| McClelland, J.W. G-2-151818 | Pogo Producing Company LLC only | Limes (Wilcox F-1) | Live Oak | 1 | 0 | 1.09M | Sep 1994 – Apr 2011 |
| McClelland G-2-102307 | Marwell Petroleum Ltd Partnrship only | Oakville (Wilcox Cons.) | Live Oak | 1 | 0 | 428K | Jan 1993 – Jul 2026 |
| McClelland, J. W. G-2-149673 | Samson Hydrocarbons Company only | Limes (Wilcox 7900) | Live Oak | 1 | 0 | 74.8K | Mar 1994 – Sep 1995 |
| J.W. McClelland et al Unit #1 G-2-149008 | Sandel Operating Company only | Limes (Wilcox F-1) | Live Oak | 1 | 0 | 2.35M | Mar 1994 – Jul 2026 |