| Yturria Cattle Co. #5042-489-31289 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (5300) | Shut inOil | 5,650 | Mar 24, 2023 | — | — |
| Yturria #2542-489-30949 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (No. 21 Sand) | ActiveOil | 6,200 | Feb 2, 2022 | — | — |
| Yturria Cattle Company #2242-489-30671 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (No. 21 Sand) | ActiveOil | 6,210 | Jan 31, 2022 | — | — |
| Thomas Unit #142-489-31141 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (8900) | ActiveInjection | 12,200 | Jul 14, 2021 | — | — |
| Thomas Unit #242-489-31176 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (8900) | ActiveGas | 10,500 | Aug 18, 2020 | — | — |
| Yturria #942-489-31191 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara NE. (7550) | Shut inOil | 10,600 | Jun 4, 2020 | — | — |
| Cantu #142-489-31218 | Cal-Tex Exploratn & Prod Co LLC only | Willacy, TXLa Sara (No. 10 Sand) | Shut inOil | 10,200 | Jun 30, 2017 | — | — |
| Yturria #3342-489-31133 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara NE. (7550) | Shut inOil | 7,931 | Aug 2, 2016 | — | — |
| Yturria #2442-489-31272 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (No. 19 Sand Upper) | Shut inOil | 4,910 | Nov 6, 2015 | — | — |
| Cantu Tract 4 #142-489-31283 | Cal-Tex Exploratn & Prod Co LLC only | Willacy, TXLa Sara (4650 Sand) | Shut inOil | 5,036 | Oct 20, 2015 | — | — |
| Thomas Oil Unit #342-489-31277 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (F-8) | ActiveOil | 9,075 | Aug 17, 2015 | — | — |
| Yturria RR #35RR42-489-31281 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (3830) | Shut inOil | 3,007 | Apr 1, 2015 | — | — |
| Yturria #1042-489-31203 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (3850) | ActiveOil | 10,110 | Jan 23, 2015 | — | — |
| Yturria #742-489-31259 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (31-a Sand) | Shut inOil | 7,000 | Jan 15, 2015 | — | — |
| Yturria #4442-489-31278 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (4300) | Shut inOil | 4,990 | Jul 23, 2014 | — | — |
| Willamar West Unit #229WI42-489-30891 | Citation Oil & Gas Corp. only | Willacy, TXWillamar West | PluggedOil | 8,150 | May 9, 2014 | — | — |
| Kleberg R J Jr TR Stillman #11942-489-30996 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 13,800 | Mar 18, 2014 | — | — |
| Kleberg R J Jr TR Stillman #7642-489-30932 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 15,400 | Mar 15, 2014 | — | — |
| Yturria #4142-489-31276 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (4300) | Shut inOil | 6,720 | Feb 20, 2014 | — | — |
| Kleberg R J Jr TR Stillman #10442-489-30972 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 14,500 | Jan 9, 2014 | — | — |
| Kleberg R J Jr TR Stillman #11842-489-30986 | EOG Resources Inc. only | Willacy, TXTordilla (Shallow Cons.) | PluggedGas | 12,300 | Dec 31, 2013 | — | — |
| Lefner et al Gas Unit #642-489-31274 | Dewbre Petroleum Corporation only | Willacy, TXChile Vieja (Frio) | ActiveGas | 11,450 | Nov 20, 2013 | — | — |
| Thomas M. G. #342-489-30998 | XTO Energy Inc. only | Willacy, TXTordilla (M-50 E) | PluggedGas | 13,400 | Nov 18, 2013 | — | — |
| Coleman Unit #142-489-31194 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (8600) | PluggedGas | 11,750 | Sep 26, 2013 | — | — |
| Sauz Ranch Mulatos Pasture #18542-489-30846 | Shoco Production LLC only | Willacy, TXWillamar West (Miocene 5100) | ActiveInjection | 8,100 | Sep 18, 2013 | — | — |
| Tordilla Field Gas Unit 1 #342-489-30999 | EOG Resources Inc. only | Willacy, TXTordilla (L-43) | PluggedGas | 13,000 | May 17, 2013 | — | — |
| Petru V. A. #3ST42-489-31086 | Petrovybe Opco LLC only | Willacy, TXLa Sal Vieja (Frio L) | ActiveGas | 14,850 | Apr 29, 2013 | — | — |
| Yturria Fausto Jr. #142-489-31170 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sal Vieja (Deep) | Temporarily abandonedGas | 12,983 | Apr 25, 2013 | — | — |
| Sauz Ranch Mulatos Pasture #18742-489-30824 | Shoco Production LLC only | Willacy, TXWillamar West (Miocene 5100) | Shut inOil | 6,400 | Apr 19, 2013 | — | — |
| Yturria RR #22RR42-489-31271 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (3830) | Shut inOil | 4,010 | Apr 17, 2013 | — | — |
| Sauz Ranch Mulatos Pasture #20242-489-30878 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West (Miocene 6700) | PluggedOil | 9,070 | Feb 15, 2013 | — | — |
| Sauz Ranch Mulatos Pasture #20742-489-30876 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West (Miocene 6700) | PluggedOil | 9,060 | Feb 13, 2013 | — | — |
| Thomas M. G. et al #142-489-30923 | XTO Energy Inc. only | Willacy, TXTordilla-NC (L-90E) | PluggedGas | 15,300 | Feb 7, 2013 | — | — |
| Yturria RR #20RR42-489-31269 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (3830) | Shut inOil | 6,500 | Jan 29, 2013 | — | — |
| Yturria #2242-489-31268 | Texas Oil and Gas Operating LLC only | Willacy, TXLa Sara (No. 40 Sand) | Shut inOil | 9,700 | Nov 15, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #17542-489-30673 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West (Miocene 5300) | PluggedOil | 6,800 | Oct 29, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #3142-489-00194 | Flint Oak Energy LLC only | Willacy, TXWildcat | PluggedGas | 7,956 | Aug 16, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #16942-489-30640 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar | PluggedOil | 8,150 | Aug 16, 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 | — | — |
| 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 | — | — |
| Kleberg R.j.jr.tr.stillman #10142-489-30961 | EOG Resources Inc. only | Willacy, TXTordilla (Deep Cons.) | PluggedGas | 13,500 | Nov 10, 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 | — | — |