| East, S. K. Mrs. -B- G-4-162319 | Headington Oil Company LLC | Sarita, East (O-Sand) | Kenedy | 1 | 343K | 15.8M | Mar 1997 – Apr 2004 |
| East, Mrs. S. K. "B" G-4-171102 | Headington Oil Company LLC | Sarita, East (Frio) | Kenedy | 1 | 93.1K | 12M | Nov 1998 – May 2010 |
| Mrs. S. K. East "B" G-4-172323 | Headington Oil Company LLC | Sarita, East (O-Sand) | Kenedy | 1 | 73.6K | 3.65M | Jan 1999 – Jun 2004 |
| King Ranch Minerals G-4-215424 | Headington Oil Company LLC | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 45.4K | 891K | Aug 2005 – Apr 2008 |
| East, S. K. Mrs "B" G-4-170859 | Headington Oil Company LLC | Sarita, East (O-Sand) | Kenedy | 1 | 45.4K | 2.04M | Sep 1998 – Mar 2001 |
| King Ranch Minerals G-4-221350 | Headington Oil Company LLC | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 43.8K | 1M | Dec 2005 – Jun 2013 |
| East, Mrs. S. K. "B" G-4-174009 | Headington Oil Company LLC | Sarita, East (Frio) | Kenedy | 1 | 39.6K | 5.45M | Jul 1999 – Jun 2006 |
| Baffin Bay State Gas Unit No. 3 G-4-200541 | Headington Oil Company LLC | Baffin Bay (Frio) | Kenedy | 1 | 19.3K | 2.01M | Jan 2004 – Apr 2013 |
| East, S. K. Mrs. "B" G-4-182470 | Headington Oil Company LLC | Sarita, East (Frio) | Kenedy | 1 | 12.3K | 1.4M | Mar 2001 – Jun 2012 |
| King Ranch Minerals G-4-223503 | Headington Oil Company LLC | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 12.1K | 301K | Apr 2006 – Jun 2013 |
| Shaw G-4-216712 | Headington Oil Company LLC | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 11.1K | 287K | Oct 2005 – Nov 2009 |
| Mrs. S. K. East "B" G-4-172531 | Headington Oil Company LLC | Sarita, East (Frio) | Kenedy | 1 | 10.2K | 852K | Mar 1999 – Apr 1999 |
| Baffin Bay State Gas Unit No. 3 G-4-212338 | Headington Oil Company LLC | Baffin Bay (Frio) | Kenedy | 1 | 7.7K | 703K | Aug 2005 – Sep 2013 |
| East, S. K. Mrs. "B" G-4-201289 | Headington Oil Company LLC | Baffin Bay, Southwest | Kenedy | 1 | 2.15K | 941K | Dec 2003 – Mar 2010 |
| East, S. K. Mrs. G-4-173653 | Headington Oil Company LLC | Rita, S.E. (Consolidated) | Kenedy | 1 | 428 | 169K | May 1999 – Jun 2009 |
| Bentsen Brothers G-4-208647 | Headington Oil Company LLC | Arrowhead (Sherry Sand) | Hidalgo | 1 | 314 | 57.5K | Jul 2005 – Nov 2005 |
| Kenedy, John G. Jr. "F" G-4-255619 | Headington Oil Company LLC | El Paistle (Consolidated) | Kenedy | 1 | 119 | 34.8K | Jan 2010 – Aug 2013 |
| Sarita Gas Unit 6 G-4-270676 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 71 | 12.3K | May 2013 – Jul 2013 |
| Kenedy, John G. Jr. 'C' G-4-257245 | Headington Oil Company LLC | Mifflin (H-07) | Kenedy | 1 | 66 | 73 | Jun 2010 – Feb 2011 |
| Kenedy, John G., Jr. "F" G-4-197513 | Headington Oil Company LLC | El Paistle, Deep (Frio) | Kenedy | 1 | 43 | 493K | Aug 2003 – Feb 2014 |
| East, S. K., Mrs. G-4-66286 | Headington Oil Company LLC | Rita (Consolidated) | Kenedy | 1 | 5 | 1.19M | by Jan 1993 – Sep 2013 |
| Mrs. East, S.K. G-4-129088 | Headington Oil Company LLC | Rita (12-A) | Kenedy | 1 | 0 | 0 | — |
| East, Mrs. S. K. G-4-133024 | Headington Oil Company LLC | Rita, West (I-45) | Kenedy | 1 | 0 | 80.1K | by Jan 1993 – Jan 1994 |
| Kenedy, John G. Jr. "E" G-4-138089 | Headington Oil Company LLC | El Paistle (Consolidated) | Kenedy | 1 | 0 | 0 | — |
| East, Mrs. S. K. G-4-139835 | Headington Oil Company LLC | Rita (Zone 11-E, S) | Kenedy | 1 | 0 | 0 | — |
| Kenedy, John G. Jr. "C" G-4-146641 | Headington Oil Company LLC | Mifflin (F-81) | Kenedy | 1 | 0 | 0 | — |
| Kenedy, John G. Jr. "C" G-4-147294 | Headington Oil Company LLC | Mifflin (H-02) | Kenedy | 1 | 0 | 0 | — |
| Kenedy, John G. Jr. "C" G-4-147969 | Headington Oil Company LLC | Mifflin (J-65) | Kenedy | 1 | 0 | 812K | Aug 1993 – Jul 1995 |
| Kenedy, John G. Jr. "H" G-4-153110 | Headington Oil Company LLC | Santa Rosa (10,700) | Kenedy | 1 | 0 | 4.05M | Feb 1995 – Oct 2011 |
| Kenedy, John G. Jr. "H" G-4-153507 | Headington Oil Company LLC | Santa Rosa (J-99) | Kenedy | 1 | 0 | 0 | — |
| Kenedy, John G. Jr. "H" G-4-154753 | Headington Oil Company LLC | Santa Rosa (10,700) | Kenedy | 1 | 0 | 2.12M | Sep 1995 – Oct 2011 |
| Kenedy, John G. Jr. "E" G-4-154831 | Headington Oil Company LLC | El Paistle (Consolidated) | Kenedy | 1 | 0 | 105K | May 1995 – May 1997 |
| Sarita Field Oil & Gas Unit G-4-158942 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 0 | — |
| Sarita Field Oil & Gas Unit G-4-159852 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 39K | Sep 1996 – Nov 1996 |
| Kenedy, John G. Jr "H" G-4-163793 | Headington Oil Company LLC | Santa Rosa (10,700) | Kenedy | 1 | 0 | 204K | Jun 1997 – Oct 2010 |
| Sarita Field Oil & Gas Unit G-4-165037 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 312K | Oct 1997 – Nov 2010 |
| Sarita Field Oil & Gas Unit G-4-165175 | Headington Oil Company LLC | Wildcat | Kenedy | 1 | 0 | 0 | — |
| Sarita Field Oil & Gas Unit G-4-165365 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 187K | Nov 1997 – Jun 2007 |
| East, S. K. Mrs. G-4-171069 | Headington Oil Company LLC | Rita, S.E. (Consolidated) | Kenedy | 1 | 0 | 1.13M | Nov 1998 – Jun 2010 |
| Sarita Field Oil & Gas Unit G-4-171081 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 0 | — |
| Sarita Field Oil & Gas Unit G-4-173278 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 0 | — |
| Kenedy, John G. Jr. "H" G-4-174949 | Headington Oil Company LLC | Wildcat | Kenedy | 1 | 0 | 3.98K | Dec 1999 – Dec 1999 |
| Sarita Field Oil & Gas Unit G-4-177368 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 0 | — |
| Sarita Field Oil & Gas Unit G-4-178214 | Headington Oil Company LLC | Sarita Shallow (Mio-Frio Cons.) | Kenedy | 1 | 0 | 0 | — |
| Kenedy, John G. Jr. -C- G-4-180308 | Headington Oil Company LLC | Wildcat | Kenedy | 1 | 0 | 0 | — |
| East, Mrs. S. K. G-4-186043 | Headington Oil Company LLC | Wildcat | Kenedy | 1 | 0 | 0 | — |
| Sarita Field Oil & Gas Unit G-4-191884 | Headington Oil Company LLC | Wildcat | Kenedy | 1 | 0 | 0 | — |
| Armstrong, Tobin G-4-206627 | Headington Oil Company LLC | Candelaria (Consolidated) | Kenedy | 1 | 0 | 23.2K | Sep 2004 – Feb 2005 |
| Kenedy, John G. Jr. "J" G-4-206820 | Headington Oil Company LLC | El Paistle, Deep (Frio) | Kenedy | 1 | 0 | 1.59M | Oct 2004 – Jan 2010 |
| Bentsen Brothers "B" G-4-208077 | Headington Oil Company LLC | Arrowhead | Hidalgo | 1 | 0 | 4.15K | Jul 2005 – Aug 2005 |