| Webster Field Unit G-3-174203 | Exxon Corp. only | Webster | Harris | 1 | 14.8K | 379K | Aug 1999 – Nov 1999 |
| Webster Gas Unit G-3-64201 | Exco Resources, Inc. only | Seven Oaks, N. (Woodbine) | Polk | 1 | 11.4K | 711K | Jan 1993 – Jul 1996 |
| Whitcomb, B. A. G-3-146986 | Maralo, Inc. only | Webster (Lox B-1) | Harris | 1 | 7.13K | 393K | Sep 1993 – Jun 1995 |
| West Production Co. a/C 3 G-3-152732 | Exxon Corp. only | Webster (Frio 6950) | Harris | 1 | 6.46K | 311K | Dec 1994 – Jul 1997 |
| Webster Field Unit G-3-173825 | Exxon Mobil Corporation only | Webster | Harris | 1 | 6.45K | 1.21M | Jul 1999 – Mar 2001 |
| Webster Field Unit G-3-172624 | Exxon Mobil Corporation only | Webster | Harris | 1 | 5K | 592K | Mar 1999 – Nov 2000 |
| Webster Field Unit G-3-178416 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 4.44K | 696K | Jun 2000 – Jun 2001 |
| Webster Field Unit G-3-173245 | Denbury Onshore, LLC only | Webster | Harris | 1 | 4.11K | 16.2M | Apr 1999 – Feb 2001 |
| West Production Co. a/C 3 G-3-167698 | Exxon Mobil Corporation only | Webster (Frio 6750) | Harris | 1 | 2.97K | 241K | Aug 1997 – Mar 1998 |
| Sheen G-9-142724 | Ozark Exploration, Inc. only | Webster (Canyon) | Schleicher | 1 | 2.66K | 20.9K | Jan 1993 – Sep 1993 |
| Webster G-3-190436 | Azimuth Energy, LLC only | Rowan, NE (Frio 10600) | Brazoria | 1 | 2.37K | 822K | Jul 2002 – Mar 2005 |
| Webster Field Unit G-3-172623 | Denbury Onshore, LLC only | Webster | Harris | 1 | 2.34K | 5.47M | Mar 1999 – Jan 2001 |
| Webster Field Unit G-3-177533 | Exxon Mobil Corporation only | Webster | Harris | 1 | 1.68K | 5.56M | Apr 2000 – Jun 2001 |
| Webster Field Unit G-3-75456 | Exxon Mobil Corporation only | Webster | Harris | 1 | 1.11K | 413K | Mar 1999 – Sep 2000 |
| Webster Field Unit G-3-175643 | Denbury Onshore, LLC only | Webster | Harris | 1 | 1.1K | 3.58M | Dec 1999 – Dec 2001 |
| Donaldson-Webster G-13-136214 | Scout Energy Management LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 972 | 587K | Jan 1993 – Dec 2018 |
| Webster Field Unit G-3-174648 | Denbury Onshore, LLC only | Webster | Harris | 1 | 860 | 2.35M | Sep 1999 – Jun 2001 |
| Exxonmobil West Fee "B" a/C 2 G-3-194624 | Denbury Onshore, LLC only | Webster (Marginulina) | Harris | 1 | 756 | 49.7K | Jun 2003 – Dec 2006 |
| Webster Field Unit G-3-176026 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 684 | 1.03M | Dec 1999 – Jan 2002 |
| Webster Field Unit G-3-176314 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 656 | 7.29M | Jan 2000 – Mar 2001 |
| Webster Field Unit G-3-175641 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 598 | 2.69M | Dec 1999 – Feb 2001 |
| Webster Field Unit G-3-180186 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 580 | 352K | Oct 2000 – Apr 2002 |
| Webster, J. F. G-9-119084 | Telesis Operating Co., Inc. only | Camar (Palo Pinto) | Schleicher | 1 | 477 | 2.3K | Jan 2006 – Feb 2006 |
| Webster, M. A. G-5-217616 | Burk Royalty Co., Ltd. only | Teague (CV-Bossier Cons.) | Freestone | 1 | 440 | 1.49M | Jul 2005 – Apr 2026 |
| Webster Field Unit G-3-182097 | Exxon Mobil Corporation only | Webster | Harris | 1 | 383 | 171K | Mar 2001 – Jul 2012 |
| Webster Field Unit G-3-176676 | Exxon Mobil Corporation only | Webster | Harris | 1 | 371 | 866K | Feb 2000 – Sep 2001 |
| Webster G-6-131650 | Allison/Hobbs Inc. only | Waskom, N. (Pettit) | Harrison | 1 | 360 | 72.8K | Jan 1993 – Aug 1999 |
| Webster Field Unit G-3-177183 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 344 | 3.38M | Mar 2000 – Dec 2000 |
| Webster Field Unig G-3-175120 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 255 | 7.19M | Oct 1999 – May 2001 |
| Webster Field Unit G-3-172631 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 195 | 4.08M | Mar 1999 – Feb 2001 |
| Webster Field Unit G-3-174202 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 189 | 12.3M | Aug 1999 – Feb 2001 |
| Webster Field Unit G-3-180723 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 186 | 307K | Dec 2000 – Aug 2001 |
| Scott, Geo. a & Beamer, Louise S G-3-185413 | P.o.&g. Operating, LLC only | Webster (Marginulina) | Harris | 1 | 174 | 742K | Aug 2001 – Apr 2006 |
| Scott, Geo. a & Beamer, Louise S G-3-186165 | P.o.&g. Operating, LLC only | Webster (Marginulina) | Harris | 1 | 173 | 153K | Sep 2001 – Feb 2002 |
| Webster Field Unit G-3-178418 | Denbury Onshore, LLC only | Webster | Harris | 1 | 166 | 2.86M | Jun 2000 – Aug 2001 |
| Webster, M. A. G-5-218165 | Burk Royalty Co., Ltd. only | Teague (CV-Bossier Cons.) | Freestone | 1 | 153 | 941K | Aug 2005 – Apr 2026 |
| Webster, M. A. G-5-218163 | Burk Royalty Co., Ltd. only | Teague (CV-Bossier Cons.) | Freestone | 1 | 149 | 1.21M | Aug 2005 – Apr 2026 |
| Webster Field Unit G-3-172622 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 138 | 188K | Mar 1999 – Sep 1999 |
| West Production Co. a/C 2 G-3-185841 | Denbury Onshore, LLC only | Webster (Marginulina) | Harris | 1 | 116 | 561K | Sep 2001 – Oct 2006 |
| Donaldson-Webster G-13-28635 | Devon Energy Production Co, L.P. only | Boonsville (Bend Congl., Gas) | Wise | 1 | 99 | 110K | Jan 1993 – Jul 2008 |
| Webster Field Unit G-3-177630 | Exxon Mobil Corporation only | Webster | Harris | 1 | 82 | 344K | May 2000 – Jan 2001 |
| Webster Field Unit G-3-176027 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 82 | 5.82M | Jan 2000 – May 2001 |
| Webster Field Unit G-3-179196 | Denbury Onshore, LLC only | Webster | Harris | 1 | 73 | 3.5M | Aug 2000 – Mar 2002 |
| Webster Field Unit G-3-179926 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 71 | 1.38M | Sep 2000 – Mar 2002 |
| Webster, M. A. G-5-217869 | Burk Royalty Co., Ltd. only | Teague (CV-Bossier Cons.) | Freestone | 1 | 62 | 1.04M | Aug 2005 – Apr 2026 |
| Scott, Geo. a & Beamer, Louise S G-3-185164 | Denbury Onshore, LLC only | Webster (Marginulina) | Harris | 1 | 54 | 221K | Sep 2001 – Apr 2002 |
| Webster Field Unit G-3-182412 | Denbury Onshore, LLC only | Webster | Harris | 1 | 51 | 148K | Apr 2001 – Jun 2001 |
| Webster Field Unit G-3-189323 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 49 | 67.1K | Apr 2002 – Aug 2002 |
| Webster Field Unit G-3-180724 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 45 | 1.23M | Dec 2000 – Apr 2001 |
| Webster Field Unit G-3-184014 | P.o.&g. Operating, LLC only | Webster | Harris | 1 | 32 | 1.12K | Jun 2001 – Jul 2001 |