| Sauz Ranch Mulatos Pasture #16942-489-30640 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar | PluggedOil | 8,150 | Aug 16, 2012 | — | — |
| Yturria #31RR42-489-31267 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara E. (8200) | Shut inGas | 9,505 | Jul 27, 2012 | — | — |
| EP Garcia Ranch #142-489-31208 | XTO Energy Inc. only | Willacy, TXI. Y. Garcia (M-30) | PluggedGas | 19,500 | Jun 15, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #18842-489-30868 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West (Miocene 6700) | PluggedOil | 9,100 | May 18, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #20642-489-30875 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West | PluggedOil | 9,070 | May 18, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #20142-489-30879 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West (Miocene 5100) | PluggedOil | 9,075 | May 18, 2012 | — | — |
| Willamar West Miocene Unit #m 4442-489-30126 | Citation Oil & Gas Corp. only | Willacy, TXWillamar West (Miocene 5300) | ActiveOil | 7,980 | Apr 26, 2012 | — | — |
| Yturria #1542-489-31266 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sal Vieja (Frio Cons) | ActiveGas | 13,005 | Apr 16, 2012 | — | — |
| Gas Unit a-Zone 6 #242-489-00518 | Pan American Petroleum Corp. only | Willacy, TXLa Sal Vieja (6 8774-9165) | PluggedGas | 10,200 | Apr 6, 2012 | — | — |
| Yturria #1C42-489-31264 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara N.E. (6070) | Shut inOil | 6,158 | Jan 31, 2012 | — | — |
| Kleberg R J Jr TR Stillman #8842-489-30946 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 12,800 | Jan 23, 2012 | — | — |
| Yturria #2042-489-31263 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (No. 40 Sand) | ActiveGas | 10,000 | Dec 29, 2011 | — | — |
| Hargill Gas Unit B #142-489-31262 | Dallas Petroleum Group LLC only | Willacy, TXWildcat | ActiveGas | 14,000 | Dec 10, 2011 | — | — |
| Raymondville SWD #142-489-31261 | Trinity Environmental SWD L.L.C only | Willacy, TXLa Sara S. (2400) | PluggedGas | 6,900 | Dec 7, 2011 | — | — |
| Kleberg R.j.jr.tr.stillman #10142-489-30961 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 13,500 | Nov 10, 2011 | — | — |
| Yturria #1142-489-31260 | Risco la Sara Operations, LLC only | Willacy, TX | Not on schedule | 10,500 | Sep 20, 2011 | — | — |
| Yturria RR #a 2RR42-489-31207 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (3460 Sand) | Shut inOil | 3,291 | Sep 13, 2011 | — | — |
| Hargill Gas Unit a #242-489-31258 | Dallas Petroleum Group LLC only | Willacy, TXHargill (Frio Cons.) | ActiveGas | 13,337 | Jul 6, 2011 | — | — |
| Luitjen #142-489-31257 | Wagner Oil Company only | Willacy, TXWildcat | PluggedGas | 11,950 | Jun 3, 2011 | — | — |
| Kleberg R J Jr TR Stillman #13242-489-31002 | EOG Resources Inc. only | Willacy, TXTordilla (L-27) | PluggedGas | 14,500 | May 13, 2011 | — | — |
| Kleberg R J Jr TR Stillman #10242-489-30959 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 12,350 | Apr 21, 2011 | — | — |
| Yturria #1442-489-31256 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara E. (8200) | Shut inOil | 8,745 | Feb 22, 2011 | — | — |
| Pinnell H. P. #142-489-31255 | Lighthouse Operating Inc. only | Willacy, TXArroyo Colorado North (E-4) | PluggedGas | 4,500 | Jan 10, 2011 | — | — |
| Yturria #31D42-489-31254 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (No. 8 Sand) | Temporarily abandonedGas | 2,400 | Dec 14, 2010 | — | — |
| Kleberg R J Jr TR Stillman #50342-489-31248 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 16,000 | Nov 23, 2010 | — | — |
| Hargill Gas Unit a #142-489-31253 | Dallas Petroleum Group LLC only | Willacy, TXHargill (Frio Cons.) | ActiveGas | 13,400 | Oct 27, 2010 | — | — |
| Kleberg, R J Jr TR Stillman #50642-489-31252 | EOG Resources, Inc. only | Willacy, TXTordilla, SW. (L-27H) | Not on schedule | 14,500 | Oct 6, 2010 | — | — |
| Yturria #19RR42-489-31251 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (No. 17 Sand) | Shut inOil | 4,000 | Sep 13, 2010 | — | — |
| Captain Fraser #1 Unit #142-489-31250 | Panther Bayou Energy LLC only | Willacy, TXWildcat | PluggedGas | 11,500 | Sep 2, 2010 | — | — |
| Kleberg R J Jr TR Stillman #10042-489-30953 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 14,000 | Sep 1, 2010 | — | — |
| Kleberg R J Jr TR Stillman #10342-489-30956 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 13,800 | Aug 11, 2010 | — | — |
| Morrow #142-489-31197 | Wagner Oil Company only | Willacy, TXWildcat | PluggedGas | 11,200 | May 24, 2010 | — | — |
| Kleberg R J Jr TR Stillman #50242-489-31247 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 16,000 | Apr 28, 2010 | — | — |
| Kleberg R J Jr TR Stillman #50142-489-31246 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | Not on scheduleGas | 16,000 | Apr 27, 2010 | — | — |
| Fwcl Ltd. #1__42-489-31245 | — | Willacy, TX | Plugged | 16,500 | Apr 21, 2010 | — | — |
| Willamar Community E #1142-489-30970 | Citation Oil & Gas Corp. only | Willacy, TXWillamar (Miocene 5400 East) | PluggedOil | 8,000 | Mar 26, 2010 | — | — |
| Wrightsman et al GU #242-489-31244 | Dewbre Petroleum Corporation only | Willacy, TXChile Vieja (Frio) | ActiveGas | 11,600 | Mar 15, 2010 | — | — |
| E P Garcia Ranch #342-489-31242 | — | Willacy, TX | Plugged | 3,200 | Mar 4, 2010 | — | — |
| Corbett #1__42-489-31241 | — | Willacy, TX | Plugged | 13,000 | Feb 3, 2010 | — | — |
| Yturria #4242-489-31240 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara NE. (7590) | Shut inOil | 10,125 | Jan 14, 2010 | — | — |
| Kleberg R J Jr TR Stillman #10642-489-30966 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 12,660 | Jan 4, 2010 | — | — |
| Palousek et al GU #242-489-31239 | Suemaur Expl. & Prod. LLC only | Willacy, TXWildcat | PluggedGas | 11,700 | Dec 30, 2009 | — | — |
| Cox B. F. #5ST42-489-31209 | Wagner Oil Company only | Willacy, TXLa Sal Vieja (8 and 9 Frio) | ActiveGas | 11,223 | Oct 27, 2009 | — | — |
| Cox B. F. #1442-489-31237 | Wagner Oil Company only | Willacy, TXLa Sal Vieja (Frio Cons) | ActiveGas | 11,209 | Oct 16, 2009 | — | — |
| Cox B. F. #1542-489-31238 | Wagner Oil Company only | Willacy, TXLa Sal Vieja (Frio Cons) | ActiveGas | 11,200 | Oct 16, 2009 | — | — |
| SNP et al GU #142-489-31236 | Dewbre Petroleum Corporation only | Willacy, TXChile Vieja (Frio) | PluggedGas | 11,800 | Oct 14, 2009 | — | — |
| Kleberg R J Jr TR Stillman #8642-489-30945 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 14,400 | Sep 10, 2009 | — | — |
| Cox B. F. #1242-489-31235 | Wagner Oil Company only | Willacy, TXLa Sal Vieja (Frio Cons) | ActiveGas | 11,356 | Sep 2, 2009 | — | — |
| Kendrick #1__42-489-31233 | — | Willacy, TX | Plugged | 7,500 | Aug 12, 2009 | — | — |
| Pinnell Trust #1__42-489-31234 | — | Willacy, TX | Plugged | 8,900 | Aug 10, 2009 | — | — |