| Wood O-13-29081 | Grayson Petroleum Company only | Gee (Oil Creek, Upper) | Grayson | 3 | 271K | 0 | Jan 1996 – Apr 2011 |
| Gray, John G. O-13-30760 | Seitz, J. R. & Adam, Ltd. only | Dove (Penn. Basal) | Grayson | 5 | 232K | 0 | Feb 2007 – Aug 2026 |
| Sadler (Dornick Hills) Sand Unit O-13-27921 | Grayson Petroleum Company only | Andrade (Dornick Hills) | Grayson | 13 | 224K | 21 | by Jan 1993 – Aug 2026 |
| Riddle, G. M. O-13-13680 | Grayson Petroleum Company only | Railsback (Oil Creek) | Grayson | 1 | 118K | 21 | by Jan 1993 – Aug 2026 |
| Pike-Davis #1 O-13-28803 | Grayson Petroleum Company only | Sandusky, West (Strawn North) | Grayson | 1 | 88.2K | 4 | Jun 1994 – Aug 2026 |
| Freeman "B" O-13-27854 | Grayson Petroleum Company only | Southmayd (Oil Creek) | Grayson | 1 | 67.1K | 21 | by Jan 1993 – Aug 2026 |
| Freeman, C. T. "A" O-13-27281 | Grayson Petroleum Company only | Southmayd (Strawn 4700) | Grayson | 3 | 61.5K | 21 | by Jan 1993 – Aug 2026 |
| Eckert, W. E. O-13-10862 | Grayson Petroleum Company only | Collinsville, East (Strawn 3600) | Grayson | 1 | 54.4K | 21 | by Jan 1993 – Aug 2026 |
| Guilloud, F. O-13-10922 | Grayson Petroleum Company only | Big Mineral, SE. (E Sand FB V) | Grayson | 4 | 48.4K | 248K | by Jan 1993 – Aug 2026 |
| Gibbons, J.E. O-13-29381 | Grayson Petroleum Company only | Southmayd, North (Baker-Viola) | Grayson | 1 | 45.4K | 144K | Sep 1997 – Aug 2026 |
| Chumbley, Gladys Etal O-13-9800 | Grayson Petroleum Company only | Mackoy (Ellenburger) | Grayson | 1 | 42.5K | 23 | by Jan 1993 – Aug 2026 |
| Walker, A. R. "A" O-13-22104 | Grayson Petroleum Company only | Sandusky, West (Dornick Hills) | Grayson | 1 | 41.8K | 21 | by Jan 1993 – Aug 2026 |
| Johnson, S. A. O-13-12765 | Grayson Petroleum Company only | Big Mineral, SE. (E Sand FB V) | Grayson | 3 | 32.2K | 125K | by Jan 1993 – Aug 2026 |
| Burgin, Morris et Al O-13-27702 | Grayson Petroleum Company only | Railsback (Oil Creek) | Grayson | 1 | 28.9K | 20 | by Jan 1993 – Jan 2008 |
| Plumlee O-13-26930 | Grayson Petroleum Company only | Sandusky, West (Strawn North) | Grayson | 1 | 26.1K | 21 | by Jan 1993 – Aug 2026 |
| Britt-Crockett Unit O-13-28521 | Grayson Petroleum Company only | Corpening (Strawn) | Grayson | 4 | 25.6K | 17 | by Jan 1993 – Aug 2026 |
| Viars, Fay et Al O-13-17433 | Grayson Petroleum Company only | Mackoy (Strawn Lower) | Grayson | 1 | 13.9K | 20 | by Jan 1993 – Aug 2026 |
| Freeman, C. T. -B- O-13-3221 | Grayson Petroleum Company only | Southmayd (Ellenburger) | Grayson | 1 | 13.3K | 16 | by Jan 1993 – Aug 2026 |
| Wiser Unit O-13-23455 | Grayson Petroleum Company only | Two Eds (Hester Sand) | Grayson | 1 | 12.1K | 21 | by Jan 1993 – Mar 2000 |
| Gray Unit G-13-256742 | Atoka Energy LLC only | White Mound (Oil Creek Sand) | Grayson | 1 | 10.2K | 1.19M | Feb 2010 – Aug 2026 |
| Sweeney, R. L. O-13-10783 | Grayson Petroleum Company only | Big Mineral, SE. (E Sand FB V) | Grayson | 1 | 9.39K | 162K | by Jan 1993 – Apr 2018 |
| Gray, John G. O-13-31874 | Seitz, J. R. & Adam, Ltd. only | Dove | Grayson | 1 | 9.15K | 0 | Aug 2011 – Aug 2026 |
| Floyd, Lillie O-13-10770 | Grayson Petroleum Company only | Collinsville, East (Strawn 3400) | Grayson | 1 | 8.45K | 21 | by Jan 1993 – Aug 2026 |
| Hollingshead O-13-13239 | Grayson Petroleum Company only | Velasco (Strawn 3700) | Grayson | 2 | 5.91K | 21 | by Jan 1993 – Feb 2001 |
| Godsey, O. O-13-14774 | Grayson Petroleum Company only | Hudgins, Sw.(flt BLK Oil Creek) | Grayson | 1 | 3.83K | 2.23K | by Jan 1993 – Sep 1999 |
| Hudgins, T. M., Unit O-13-14814 | Grayson Petroleum Company only | Hudgins, SW. (Oil Creek) | Grayson | 1 | 3.24K | 5.19K | by Jan 1993 – Jan 1998 |
| Floyd, Lillie O-13-24412 | Grayson Petroleum Company only | Collinsville, East (Strawn 3600) | Grayson | 1 | 3.21K | 17 | by Jan 1993 – Oct 1997 |
| Spalding, Jessie O-13-10491 | Grayson Petroleum Company only | Gee (Oil Creek, Upper) | Grayson | 1 | 2.32K | 20 | by Jan 1993 – Mar 1997 |
| Ferrill, N. L. O-13-10376 | Grayson Petroleum Company only | Big Mineral, SE. (V Sand) | Grayson | 3 | 2.13K | 12.5K | by Jan 1993 – Feb 2002 |
| Crow, Ray, Etal O-13-12226 | XTO Energy Inc. only | Sherman (Davis 8400) | Grayson | 1 | 1.23K | 12.7K | by Jan 1993 – Jun 1999 |
| Freeman, C. T. Unit O-13-14284 | Grayson Petroleum Company only | Southmayd (Strawn 4700) | Grayson | 1 | 862 | 18 | by Jan 1993 – Jun 1994 |
| McDonnell, E. O-13-23452 | Grayson Petroleum Company only | Sadler (Penn.) | Grayson | 1 | 283 | 16 | by Jan 1993 – May 1995 |
| Klas O-13-30762 | Grayson Petroleum Company only | Southmayd (Oil Creek) | Grayson | 1 | 240 | 0 | Feb 2007 – May 2007 |
| Huff O-13-32603 | Grayson Petroleum Company only | Railsback (Oil Creek) | Grayson | 1 | 153 | 0 | Jun 2013 – Jul 2013 |
| McMurray O-13-16333 | BLS Production Co., Inc. only | Collinsville, SE. (4100 Degan) | Grayson | 1 | 126 | 1 | by Jan 1993 – Jan 1993 |
| Perkins, O. D. O-13-28028 | Grayson Petroleum Company only | Gee (Oil Creek, Upper) | Grayson | 1 | 31 | 3 | by Jan 1993 – May 1994 |
| Rawlins, P. O-13-12199 | Gray Operating Company, Inc. only | Big Mineral, SE. (E Sand FB V) | Grayson | 2 | 0 | 0 | — |
| Viars, Fay O-13-11109 | Grayson Petroleum Company only | Mackoy (Hickey Sand) | Grayson | 1 | 0 | 0 | — |
| Huff, N. H. O-13-27942 | Grayson Petroleum Company only | Railsback (Oil Creek) | Grayson | 1 | 0 | 0 | — |
| Ferrill, N. L. O-13-12685 | Gray Operating Company, Inc. only | Big Mineral, SE. (7570 Sand) | Grayson | 1 | 0 | 0 | — |
| Sims, S. W. O-13-24901 | Gray Operating Company, Inc. only | Big Mineral, E. (Davis Sand) | Grayson | 1 | 0 | 0 | — |
| Viars, Fay O-13-9699 | Grayson Petroleum Company only | Mackoy (Ellenburger) | Grayson | 1 | 0 | 0 | — |
| Self O-13-29277 | Grayson Petroleum Company only | Southmayd, North (Baker-Viola) | Grayson | 1 | 0 | 0 | — |
| Crow, Ray et Al G-13-173109 | Chevron U. S. A. Inc. only | Sherman (Davis 8400) | Grayson | 1 | 0 | 0 | — |
| Thorn, Ida B. G-13-37424 | BLS Production Co., Inc. only | Handy (Gray Lower) | Grayson | 1 | 0 | 5.52K | by Jan 1993 – Mar 2025 |
| Ferrill, N. L. G-13-21212 | Grayson Petroleum Company only | Big Mineral, SE. (V Lower Gas) | Grayson | 1 | 0 | 0 | — |
| Sweeney, R. L. G-13-21213 | Grayson Petroleum Company only | Big Mineral, SE. (V LO) | Grayson | 1 | 0 | 0 | — |
| Sims, S. W. O-13-12262 | Gray Operating Company, Inc. only | Big Mineral, E. (-V- Sand) | Grayson | 1 | 0 | 0 | — |
| Kusch, O. F., Jr. O-13-16324 | Grayson Petroleum Company only | Sherman (Pennsylvanian 9200) | Grayson | 1 | 0 | 2 | Jan 1994 – May 1994 |