| Hankamer G-3-192620 | Silverbrook Operating II LLC only | Raywood (Cook Mtn. 11200) | Liberty | 1 | 280K | 4.03M | Oct 2002 – Aug 2026 |
| Hankamer et Al G-3-127976 | R & B Oil Company, LLC only | Buna, West (Wilcox) | Jasper | 1 | 118K | 900K | by Jan 1993 – Dec 2022 |
| Hankamer et Al G-3-119194 | Petro-Smith Operating LLC only | Buna, West (Wilcox) | Jasper | 1 | 108K | 826K | by Jan 1993 – Aug 2017 |
| Hankamer G-3-282393 | Firstrike Energy Corporation only | Sabine Tram (Yegua 7800) | Newton | 1 | 81.3K | 153K | Jun 2017 – Jan 2024 |
| Hankamer 912 G-3-192306 | Petro-Guard Production,l.l.c. only | Hartburg (Hackberry 1ST) | Newton | 1 | 74.9K | 249K | Oct 2002 – Sep 2004 |
| Hankamer A-912 G-3-263995 | Hilcorp Energy Company only | Bobcat Run (y-5 Sand) | Newton | 1 | 72.2K | 500K | Oct 2011 – Mar 2025 |
| Hankamer-Pickett G-3-242998 | Silverbrook Operating II LLC only | Raywood (Cook Mtn. 11200) | Liberty | 1 | 57.8K | 1.35M | Dec 2007 – Jul 2012 |
| Hankamer et Al G-3-118170 | Petro-Smith Operating LLC only | Buna, West (Wilcox) | Jasper | 1 | 43.8K | 289K | by Jan 1993 – Nov 2006 |
| Hankamer et Al G-3-118384 | Petro-Smith Operating LLC only | Buna, West (Wilcox) | Jasper | 1 | 37.6K | 160K | by Jan 1993 – Jun 2017 |
| Hankamer, et Al G-3-125954 | Kerr-McGee Oil & Gas Onshore LP only | Buna, West (Wilcox) | Jasper | 1 | 18.7K | 143K | by Jan 1993 – Feb 2004 |
| Hankamer et Al G-3-127975 | Smith Production Inc. only | Buna, West (Wilcox) | Hardin | 1 | 16.9K | 119K | by Jan 1993 – Apr 1996 |
| Hankamer A-300 G-3-168579 | Petro-Guard Production,l.l.c. only | Cerdo Blanco (Yegua Gold) | Newton | 1 | 16.9K | 69.5K | Apr 1998 – Mar 2000 |
| Hankamer "D" G-3-153219 | S & S Operating Company, Inc. only | Camptown (7100 Hackberry) | Newton | 1 | 13.4K | 408K | Apr 1994 – Jan 1999 |
| Evans, Abbie M. "C" G-3-226429 | Gaither Petroleum Corporation only | Hankamer (Frio 2) | Liberty | 1 | 13.3K | 37.6K | Jan 2005 – Mar 2011 |
| Hankamer-Tram G-3-280632 | Unit Petroleum Company only | Sabine Tram (Wilcox 2) | Newton | 1 | 9.52K | 70.5K | Mar 2014 – Jan 2016 |
| Musselman, George A. G-2-110598 | Hankamer, Curtis Corporation,the only | McDaniel, W. (Yegua K-4) | Lavaca | 1 | 5.91K | 362K | by Jan 1993 – Nov 2007 |
| Hankamer G-3-278879 | Prime Operating Company only | Kings Court (Y-9) | Newton | 1 | 4.92K | 77.9K | Aug 2014 – Jun 2020 |
| Brazil G-3-204818 | Crimson Exploration Oper., Inc. only | Hankamer, N. (Vicksburg) | Liberty | 1 | 4.54K | 529K | Jun 2004 – Mar 2008 |
| Geoterre Operating Hankamer 216 G-3-281702 | Geoterre Operating, L.L.C. only | Norian (Y2-B) | Newton | 1 | 3.36K | 209K | Aug 2015 – Dec 2018 |
| Blanke G-3-6480 | Proline Energy Resources Inc only | Hankamer (Cib #10 & Tex Miss) | Liberty | 1 | 3.23K | 1.33M | by Jan 1993 – Nov 2025 |
| Hankamer G-3-155176 | Samedan Oil Corporation only | Stowell (8590 Marginulina Sand) | Jefferson | 1 | 2.4K | 898K | Aug 1995 – Aug 1998 |
| Weaver G-3-275997 | Gaither Petroleum Corporation only | Hankamer | Chambers | 1 | 2.16K | 94K | Jun 2014 – Apr 2015 |
| Hankamer Bobcat G-3-256993 | Prime Operating Company only | Camptown (7100 Hackberry) | Newton | 1 | 1.92K | 330K | Apr 2010 – Dec 2013 |
| Schoenjohn G-3-97276 | American Operating Company only | Hankamer, South (UF-2) | Chambers | 1 | 1.21K | 545K | Jan 1997 – Dec 1998 |
| Reed & Hankamer "A" G-4-143679 | Bridwell Oil Co. only | Richard King (Frio Cons.) | Jim Wells | 1 | 1.1K | 424K | by Jan 1993 – Mar 2017 |
| Geoterre Operating Hankamer #1 G-3-298119 | Geoterre Operating, L.L.C. only | Call, West (Y-2) | Newton | 1 | 771 | 35.2K | Nov 2023 – Mar 2025 |
| Schoenjohn G-3-97275 | American Operating Company only | Hankamer, South | Chambers | 1 | 733 | 431K | Jul 1993 – Dec 1996 |
| Hankamer G-3-151781 | S. M. A. Production Company only | Sabine Tram (Yegua 7800) | Newton | 1 | 454 | 23.2K | Oct 1994 – Apr 1995 |
| Hankamer G-3-162730 | Hilcorp Energy Company only | Gist (5500 Frio) | Newton | 1 | 353 | 90.7K | Jan 1997 – Dec 1999 |
| Murphey, Elta G-9-52898 | Hankamer, Curtis Corporation,the only | Murphey (Canyon 6950) | Irion | 1 | 297 | 61.3K | by Jan 1993 – Oct 2000 |
| Hankamer - Bois D'arc G-3-211375 | Petro-Guard Production,l.l.c. only | Sabine Tram, E (Frio 4200) | Newton | 1 | 80 | 304K | Oct 2004 – Feb 2006 |
| Blanchette G-3-109216 | L & C Enterprises, Inc. only | Hankamer (8200) | Liberty | 1 | 54 | 2.29K | by Jan 1993 – Aug 1993 |
| Reed & Hankamer G-4-9770 | Bridwell Oil Co. only | Captain Lucey (S) | Jim Wells | 1 | 51 | 73.1K | by Jan 1993 – Mar 2000 |
| Hankamer G-3-163017 | Tri-C Resources, Inc. only | Deweyville, S. (Hackberry 2 -A-) | Newton | 1 | 36 | 764K | Jan 1997 – Aug 1999 |
| Hankamer G-3-163016 | Tri-C Resources, Inc. only | Deweyville, S. (Hackberry 2 -B-) | Newton | 1 | 36 | 783K | Jan 1997 – Aug 1999 |
| Hankamer G-3-138232 | U.S. Exploration Liq. Trust only | Camptown (5200 Frio) | Newton | 1 | 20 | 72 | by Jan 1993 – Mar 1993 |
| Hankamer, E. C. et al 'A' G-3-168001 | Hilcorp Energy Company only | Gist (5500 Frio) | Newton | 1 | 15 | 44.3K | Apr 1998 – Mar 1999 |
| Hankamer G-3-154389 | Offshore Group, Inc. The only | Wildcat | Newton | 1 | 0 | 0 | — |
| Hankamer G-3-152848 | Convest Energy Corporation only | Gist | Newton | 1 | 0 | 17.9K | Dec 1994 – Mar 1995 |
| Hankamer G-3-294997 | Texakoma E & P, LLC only | Wildcat | Newton | 1 | 0 | 0 | — |
| Reed & Hankamer G-4-94444 | Bridwell Oil Co. only | Richard King (4300) | Jim Wells | 1 | 0 | 0 | — |
| Hankamer, I. J. et UX G-3-150910 | Merit Energy Company only | Hankamer, South | Chambers | 1 | 0 | 304K | Aug 1994 – Nov 1997 |
| Harrison Interests, Ltd. "A" G-3-138453 | DJH Oil & Gas LLC only | Hankamer (Miocene Sand) | Liberty | 1 | 0 | 412K | by Jan 1993 – Mar 1999 |
| Hankamer, I. J. et UX G-3-166797 | Home Petroleum Corp. only | Hankamer, S. (Frio, Upper 5900) | Chambers | 1 | 0 | 363K | Jan 1998 – Aug 2026 |
| Boyt, E. W. G-3-290189 | Gaither Petroleum Corporation only | Hankamer (Miocene Sand) | Liberty | 1 | 0 | 88.7K | Dec 2019 – Aug 2026 |
| Boyt, E. W. G-3-55576 | Gaither Petroleum Corporation only | Hankamer | Liberty | 1 | 0 | 0 | — |
| Wilcox, G. C. G-3-125788 | Middleton Oil Company only | Hankamer (Wilcox Marg 1) | Chambers | 1 | 0 | 0 | — |
| Kahn, B. R. G-3-122048 | Caskids Operating Company only | Hankamer, S.(uf-1) | Liberty | 1 | 0 | 0 | — |
| Hankamer, Arco E. C. Section 1 G-3-108053 | Continental Operating Co. only | Sabine Tram, SW (Wilcox 11,500) | Newton | 1 | 0 | 0 | — |
| Hankamer, I. J. et UX G-3-44838 | Home Petroleum Corp. only | Hankamer, South (UF-2) | Chambers | 1 | 0 | 0 | — |