| Kloh O-10-2748 | Cimarex Energy Co. of Colorado only | Howard Glasscock | Howard | 88 | 1.84M | 751 | Jan 1993 – Nov 2011 |
| Clay O-10-2750 | Cimarex Energy Co. of Colorado only | Howard Glasscock | Howard | 37 | 865K | 415K | Jan 1993 – Nov 2011 |
| HMW O-10-34046 | Ozark Exploration, Inc. only | Zebulon, South (Fusselman) | Howard | 1 | 495K | 11 | Nov 1993 – Apr 2026 |
| Douthit, E. W. -A- O-10-22380 | Cimarex Energy Co. of Colorado only | Howard Glasscock (Clear Fork,mi) | Howard | 4 | 392K | 2.71K | Jan 1993 – Nov 2011 |
| Grantham O-10-35695 | Ozark Exploration, Inc. only | Knott, West (Penn Reef) | Howard | 1 | 284K | 419K | Mar 1998 – Apr 2026 |
| Chalk -A- O-10-2749 | Cimarex Energy Co. of Colorado only | Howard Glasscock | Howard | 16 | 267K | 164K | Jan 1993 – Nov 2011 |
| Hall O-10-34092 | Ozark Exploration, Inc. only | Zebulon, South (Fusselman) | Howard | 1 | 255K | 10 | Dec 1993 – Apr 2026 |
| Chalk, Otis /EO/ O-10-2727 | Cimarex Energy Co. of Colorado only | Howard Glasscock | Howard | 10 | 243K | 168K | Jan 1993 – Nov 2011 |
| Chalk, G. O. O-10-2834 | Cimarex Energy Co. of Colorado only | Howard Glasscock | Howard | 21 | 211K | 13.6K | Jan 1993 – Nov 2011 |
| Quinn O-10-34314 | Ozark Exploration, Inc. only | Ernie Pinnell (Fusselman) | Howard | 1 | 189K | 0 | Oct 1994 – Mar 2017 |
| Chalk, G. O. O-10-19095 | Cimarex Energy Co. of Colorado only | Howard-Glasscock (Glorieta) | Howard | 12 | 185K | 7.85K | Jan 1993 – Nov 2011 |
| Alexander 17 O-10-35031 | Ozark Exploration, Inc. only | Zebulon, North (Fusselman) | Howard | 1 | 150K | 12 | Jun 1996 – Apr 2026 |
| Clanton, Clyde O-10-7083 | Platinum Exploration Inc. only | Vealmoor | Howard | 2 | 128K | 246K | Jan 1993 – Sep 2002 |
| Douthit, E. W. -B- O-10-22381 | Cimarex Energy Co. of Colorado only | Howard Glasscock (Clear Fork,mi) | Howard | 4 | 103K | 1.05K | Jan 1993 – Nov 2011 |
| Tar Baby "29" O-10-34259 | Platinum Exploration Inc. only | Vealmoor | Howard | 1 | 77.1K | 168K | Aug 1994 – Dec 1998 |
| Chalk, G. O. O-10-21433 | Cimarex Energy Co. of Colorado only | Howard Glasscock (Clear Fork,mi) | Howard | 2 | 70.9K | 1.62K | Jan 1993 – Nov 2011 |
| Hewett -A- O-10-30108 | Byrd Operating Company only | Florac (Strawn) | Howard | 1 | 65.9K | 196K | Jan 1993 – Apr 2026 |
| Alexander O-10-34122 | Ozark Exploration, Inc. only | Varel, West (Fusselman) | Howard | 1 | 53.2K | 8 | Feb 1994 – Apr 2026 |
| Simpson, Akin -A- O-10-7096 | Platinum Exploration Inc. only | Vealmoor | Howard | 2 | 52.1K | 126K | Jan 1993 – Aug 1999 |
| Bonebrake 98 O-10-41212 | Pecos River Exploration, LLC only | Athey (Wolfcamp 10900) | Howard | 2 | 40.9K | 65.6K | Nov 2010 – Mar 2020 |
| Doobie Good O-10-35187 | Platinum Exploration Inc. only | Vealmoor | Howard | 2 | 39K | 92.9K | Nov 1996 – Jul 1998 |
| Reed "C" O-10-35197 | Cimarex Energy Co. of Colorado only | Howard Glasscock (Clear Fork,mi) | Howard | 1 | 39K | 0 | Dec 1996 – Oct 2011 |
| McKinnon O-10-31331 | Otb Operating, LLC only | Florac (Wolfcamp) | Howard | 2 | 37.3K | 184K | Jan 1993 – Apr 2026 |
| Scissortail O-10-34236 | Platinum Exploration Inc. only | Double "B" (Canyon) | Howard | 1 | 37.2K | 122K | Jul 1994 – Jun 2001 |
| Middleton "44" O-10-35092 | Palo Petroleum, Inc. only | Flora (Canyon Congl.) | Howard | 1 | 36.4K | 38K | Aug 1996 – Dec 2001 |
| Lockhart, S. L. -B- O-10-7090 | Platinum Exploration Inc. only | Vealmoor | Howard | 2 | 26K | 39.5K | Jan 1993 – May 1999 |
| Cities-Reed O-10-21573 | Cimarex Energy Co. of Colorado only | Howard Glasscock (Clear Fork,mi) | Howard | 1 | 23.7K | 23 | Jan 1993 – Sep 2011 |
| Neel O-10-25429 | MWS Producing, Inc. only | Florac (Strawn) | Howard | 1 | 23.4K | 94.9K | Jan 1993 – Jul 2014 |
| Veal, M. S. O-10-7097 | Platinum Exploration Inc. only | Vealmoor | Howard | 1 | 23K | 35.3K | Jan 1993 – Apr 1998 |
| Umphress,c. F. et Al O-10-39361 | Rrig Exploration, LLC only | Sand Springs (Fusselman) | Howard | 2 | 18.7K | 148K | Mar 2009 – Mar 2019 |
| Douthit "115" O-10-35258 | Cimarex Energy Co. of Colorado only | Howard Glasscock (Clear Fork,mi) | Howard | 1 | 16.6K | 0 | Jan 1997 – Oct 2011 |
| Crown Exploration Bigby O-10-45687 | Highpeak Energy Holdings, LLC only | Spraberry (Trend Area) | Howard | 1 | 15.6K | 0 | Aug 2014 – Aug 2020 |
| Stella Petty Unit O-10-32474 | Otb Operating, LLC only | Florac (Wolfcamp) | Howard | 1 | 14.3K | 96.1K | Jan 1993 – Jun 2021 |
| Mansfield, Cecil O-10-7093 | Platinum Exploration Inc. only | Vealmoor | Howard | 2 | 12.5K | 19.2K | Jan 1993 – May 1998 |
| Robb O-10-40181 | WTG Exploration only | Spraberry (Trend Area) | Howard | 1 | 9.06K | 21.6K | Feb 2010 – Feb 2018 |
| Cosa Nostra O-10-35853 | Patrick Exploration Company only | C. C. Gunn (Canyon Reef) | Howard | 1 | 8K | 17.9K | Aug 1998 – Mar 2000 |
| Sterling Family Trust O-10-33457 | Trend Exploration Company only | Vincent, SE. (Strawn) | Howard | 1 | 7.01K | 222K | Jan 1993 – Dec 1997 |
| O'Daniel "30" O-10-35529 | Patrick Exploration Company only | C. C. Gunn (Canyon Reef) | Howard | 1 | 6.49K | 12.5K | Oct 1997 – Oct 1998 |
| Meek, J. W. O-10-3976 | Platinum Exploration Inc. only | Luther, N. (Canyon Reef) | Howard | 1 | 6.16K | 4.92K | Jan 1993 – Apr 1996 |
| McKinnon O-10-27157 | MWS Producing, Inc. only | Florac (Strawn) | Howard | 1 | 5.68K | 50.6K | Jan 1993 – Feb 2004 |
| Howard -F- Fee O-10-25847 | Texas Reexploration Operating LC only | Coahoma (Miss) | Howard | 2 | 5.48K | 28.3K | Jan 1993 – Apr 2012 |
| Lockhart, S. L. -A- O-10-7089 | Platinum Exploration Inc. only | Vealmoor | Howard | 1 | 5.3K | 11.5K | Jan 1993 – Aug 1995 |
| Shafer O-10-37542 | Probe Exploration Company only | Sara-Mag (Canyon Reef) | Howard | 1 | 4.09K | 8.14K | May 2005 – Sep 2008 |
| Petty, Stella -32- O-10-27214 | Colorado Bluebonnet Energy Corp. only | Florac (Strawn) | Howard | 2 | 3.06K | 32.5K | Jan 1993 – Apr 1997 |
| McNew O-10-29082 | Ricks Exploration, Inc. only | Raman (Fusselman) | Howard | 2 | 1.98K | 13 | Jan 1993 – Jan 1994 |
| Barnett O-10-38033 | WTG Exploration only | Lomax (Fusselman) | Howard | 1 | 1.59K | 0 | Apr 2006 – Dec 2009 |
| Waldron, Shirley, et Al O-10-24600 | Trey Exploration, Inc. only | Moore | Howard | 1 | 1.46K | 21 | Jan 1993 – Jan 1995 |
| Lockhart, S. L. "C" O-10-32365 | Platinum Exploration Inc. only | Vealmoor, East (Clearfork) | Howard | 1 | 1.31K | 22 | Jan 1993 – Jun 1995 |
| Read -A- O-10-25361 | Texas Reexploration Operating LC only | Coahoma, N. (Fussel) | Howard | 3 | 1.08K | 39.4K | Jan 1993 – Sep 2004 |
| Waldron, Shirley, et al "G" O-10-25092 | Trey Exploration, Inc. only | Moore | Howard | 1 | 973 | 19 | Jan 1993 – Apr 1995 |