| Yturria RR #54RR42-489-31291 | Texas Oil and Gas Operating, LLC only | Willacy, TX | Not on schedule | 4,500 | Sep 11, 2025 | — | — |
| Yturria #5142-489-31290 | Texas Oil and Gas Operating, LLC only | Willacy, TX | Not on schedule | 6,700 | Apr 12, 2023 | — | — |
| Yturria Cattle Co. #5042-489-31289 | Texas Oil and Gas Operating LLC only | Willacy, TXLA Sara (5300) | Shut inOil | 6,000 | Mar 24, 2023 | — | — |
| Yturria Cattle Co. (22 Sd.) #2542-489-30949 | Texas Oil and Gas Operating LLC only | Willacy, TXLA Sara (No. 22 Sd.) | Not on scheduleOil | 6,200 | Feb 2, 2022 | — | — |
| Yturria Cattle Co. #2242-489-30671 | Mabee Petroleum Corp. only | Willacy, TXLA Sara N. (No. 31-a Sd.) | Not on scheduleOil | 6,300 | Jan 31, 2022 | — | — |
| Thomas Unit #142-489-31141 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (F-20) | Not on scheduleGas | 12,300 | Jul 14, 2021 | — | — |
| Thomas Unit #242-489-31176 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (F-20) | Not on scheduleGas | 10,500 | Aug 18, 2020 | — | — |
| Yturria #942-489-31191 | Texas Oil and Gas Operating LLC only | Willacy, TXLA Sara NE. (7550) | Shut inGas | 11,000 | Jun 4, 2020 | — | — |
| Cantu #142-489-31218 | Dewbre Petroleum Corporation only | Willacy, TXChess (9000) | Not on scheduleOil | 10,500 | Jun 30, 2017 | — | — |
| Petrogio Carlos Garza #142-489-31288 | US Petromex Oil & Gas LLC only | Willacy, TXWildcat | ActiveGas | 13,500 | Dec 21, 2016 | — | — |
| Yturria #4942-489-31287 | Blakenergy Operating, LLC only | Willacy, TX | Not on schedule | 4,000 | Sep 21, 2016 | — | — |
| Yturria #4842-489-31286 | MK Operating Company LLC only | Willacy, TX | Not on schedule | 3,000 | Sep 19, 2016 | — | — |
| Yturria #3342-489-31133 | MK Operating Company LLC only | Willacy, TX | Not on scheduleOil | 8,100 | Aug 2, 2016 | — | — |
| Yturria #4742-489-31285 | MK Operating Company LLC only | Willacy, TX | Not on schedule | 3,000 | Apr 8, 2016 | — | — |
| Yturria #28D42-489-31249 | MK Operating Company LLC only | Willacy, TX | Not on scheduleGas | 4,100 | Feb 11, 2016 | — | — |
| Yturria #29D42-489-31265 | MK Operating Company LLC only | Willacy, TX | Not on scheduleOil | 6,200 | Feb 5, 2016 | — | — |
| Yturria #2442-489-31272 | LA Sara Operating Company, LLC only | Willacy, TX | Not on scheduleOil | 6,000 | Nov 6, 2015 | — | — |
| Cantu Tract 4 #142-489-31283 | Galilee Oil Investments LLC only | Willacy, TXLA Sara (4650 Sand) | Not on scheduleOil | 7,000 | Oct 20, 2015 | — | — |
| Thomas Unit #342-489-31277 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (8500) | Not on scheduleOil | 9,200 | Aug 17, 2015 | — | — |
| Yturria RR #35RR42-489-31281 | Texas Oil and Gas Operating LLC only | Willacy, TXLA Sara (3830) | Shut inOil | 3,200 | Apr 1, 2015 | — | — |
| Yturria #1042-489-31203 | LA Sara Operating Company LLC only | Willacy, TXLA Sara (No. 40 Sand) | Not on scheduleOil | 11,000 | Jan 23, 2015 | — | — |
| Yturria #742-489-31259 | Texas Oil and Gas Operating LLC only | Willacy, TXLA Sara (31-a Sand) | Shut inGas | 7,000 | Jan 15, 2015 | — | — |
| Yturria #4542-489-31280 | Texas Oil and Gas Operating LLC only | Willacy, TXLA Sara (4650 Sand) | Shut inGas | 5,800 | Dec 5, 2014 | — | — |
| Yturria RR #27RR42-489-31279 | MK Operating Company LLC only | Willacy, TXLA Sara (6250) | PluggedOil | 6,400 | Aug 4, 2014 | — | — |
| Yturria #4442-489-31278 | Texas Oil and Gas Operating LLC only | Willacy, TXLA Sara (4300) | Shut inOil | 5,200 | Jul 23, 2014 | — | — |
| Willamar West Miocene Unit #229WI42-489-30891 | Citation Oil & Gas Corp. only | Willacy, TX | Not on scheduleOil | 8,150 | May 9, 2014 | — | — |
| Kleberg, R J Jr TR Stillman #11942-489-30996 | EOG Resources, Inc. only | Willacy, TX | Not on scheduleGas | 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 | 6,800 | Feb 20, 2014 | — | — |
| Yturria #842-489-31275 | Blakenergy Operating, LLC only | Willacy, TX | Not on schedule | 6,500 | Feb 13, 2014 | — | — |
| Kleberg, R J Jr TR Stillman #10442-489-30972 | EOG Resources, Inc. only | Willacy, TX | Not on scheduleGas | 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 | 11,600 | Nov 20, 2013 | — | — |
| Thomas, M. G. et al #342-489-30998 | XTO Energy Inc. only | Willacy, TX | Not on scheduleGas | 13,400 | Nov 18, 2013 | — | — |
| Yturria #26RR42-489-31243 | LA Sara Operating Company LLC only | Willacy, TXWildcat | Not on scheduleOil | 4,000 | Nov 9, 2013 | — | — |
| Coleman Unit #142-489-31194 | Dewbre Petroleum Corporation only | Willacy, TXRiggan (9775) | PluggedGas | 11,750 | Sep 26, 2013 | — | — |
| Sauz Ranch Mulatos Past. #18542-489-30846 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West (Miocene 6050 N) | Not on scheduleOil | 9,100 | Sep 18, 2013 | — | — |
| Tordilla Field Gas Unit 1 #342-489-30999 | EOG Resources, Inc. only | Willacy, TX | Not on scheduleGas | 13,000 | May 17, 2013 | — | — |
| Petru V. A. #3ST42-489-31086 | XTO Energy Inc. only | Willacy, TXLA Sal Vieja (Deep) | Not on scheduleGas | 16,000 | Apr 29, 2013 | — | — |
| Fausto Yturria, Jr. #142-489-31170 | XTO Energy Inc. only | Willacy, TX | Not on scheduleGas | 14,200 | Apr 25, 2013 | — | — |
| Sauz Ranch Mulatos Past. #18742-489-30824 | Chestnut Explor. and Prod. Inc. only | Willacy, TXWillamar West (Miocene 6050 N) | Not on scheduleOil | 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 | — | — |
| Studebaker et al GU #1__42-489-31270 | Suemaur Expl. & Prod. LLC only | Willacy, TXWildcat | Plugged | 14,000 | Mar 21, 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 | Flint Oak Energy, LLC only | Willacy, TX | Not on scheduleOil | 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 | LA Sara Operating Company LLC only | Willacy, TXLA Sara E. (8500) | Not on scheduleOil | 10,200 | Nov 15, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #17542-489-30673 | Flint Oak Energy, LLC only | Willacy, TX | Not on scheduleOil | 6,800 | Oct 29, 2012 | — | — |
| Sauz Ranch Mulatos Pasture #3142-489-00194 | Flint Oak Energy, LLC only | Willacy, TX | Not on scheduleGas | 7,956 | Aug 16, 2012 | — | — |