| Jewell-Wilbur #142-181-31651 | Atoka Energy LLC only | Grayson, TXBig Mineral Creek (Viola) | Active | 9,100 | Dec 17, 2025 | — | — |
| Withrow (V) #1HZ42-181-31527 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | Not on scheduleOil | 13,000 | Nov 6, 2023 | — | — |
| Green #52242-181-31324 | Flintlock Exploration LLC only | Grayson, TXBig Mineral Creek (Viola) | Not on scheduleOil | 10,500 | Oct 30, 2017 | — | — |
| Hazlip #242-181-31592 | Tatanka Operating LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 9,000 | Jul 5, 2017 | — | — |
| Sweeney H. O. #1242-181-31585 | R2Q Operating LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 11,000 | Sep 16, 2016 | — | — |
| Pittman #106942-195-31881 | Mewbourne Oil Company only | Hansford, TXAlpar (Viola) | PluggedGas | 10,200 | Jul 10, 2015 | — | — |
| Crowe #142-181-31505 | Payson Operating LLC only | Grayson, TXPerrin N. Afb (Viola) | Not on scheduleOil | 15,500 | May 1, 2015 | — | — |
| Everett Unit #1HHZ42-337-35415 | EOG Resources Inc. only | Montague, TXWales (Viola) | Not on scheduleOil | 9,000 | Oct 24, 2014 | — | — |
| William #1HHZ42-181-31557 | Tatanka Operating LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 11,500 | Aug 11, 2014 | — | — |
| Payne-Terry Unit #142-181-31344 | Felderhoff Production Company only | Grayson, TXBig Mineral Creek (Viola) | Not on scheduleOil | 12,300 | May 30, 2014 | — | — |
| Perryman #142-097-34002 | Canan Mowrey Operating LLC only | Cooke, TXSaint JO SE. (Viola) | Not on scheduleOil | 8,990 | May 14, 2013 | — | — |
| Reddick (V) #1HHZ42-181-31523 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 13,000 | Apr 8, 2013 | — | — |
| Gibbons Unit #1HHZ42-181-31512 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 10,000 | Oct 9, 2012 | — | — |
| Wright #1HHZ42-181-31504 | Flintlock Exploration LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 12,000 | Jul 18, 2012 | — | — |
| Cannon #1HHZ42-181-31502 | Flintlock Exploration LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 10,500 | Jun 25, 2012 | — | — |
| Bug Off #1HHZ42-181-31500 | Flintlock Exploration LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 10,500 | May 24, 2012 | — | — |
| Lawrence Trust Unit #1HXHZ42-181-31458 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | Not on scheduleGas | 9,100 | Apr 23, 2012 | — | — |
| Lawrence Trust Unit #3HHZ42-181-31494 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | Not on scheduleGas | 9,317 | Mar 13, 2012 | — | — |
| J & M Unit #1HHZ42-181-31488 | Flintlock Exploration LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 10,000 | Oct 14, 2011 | — | — |
| Bennett a Unit #1HHZ42-181-31479 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | Not on scheduleGas | 9,600 | Jul 29, 2011 | — | — |
| Smith Unit #1HHZ42-181-31471 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | PluggedOil | 9,500 | May 13, 2011 | — | — |
| Hansford Gas Unit 30 #5R42-195-31834 | Laredo Petroleum Inc. only | Hansford, TXHansford (Viola) | Not on scheduleOil | 9,600 | Feb 22, 2011 | — | — |
| Davis Unit #1 HHZ42-181-31465 | Jetta Operating Company Inc. only | Grayson, TXBig Mineral Creek (Viola) | Not on scheduleGas | 8,700 | Oct 29, 2010 | — | — |
| Boyd #342-337-34230 | Borderline Operating Corp. only | Montague, TXBowie NE. (Viola) | PluggedOil | 7,400 | Jul 29, 2009 | — | — |
| Irby #342-181-31449 | Tatanka Operating LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 10,000 | May 26, 2009 | — | — |
| Strickland Unit #142-097-34054 | EOG Resources Inc. only | Cooke, TXSaint JO SE. (Viola) | ActiveOil | 11,000 | May 20, 2009 | — | — |
| Meek #112942-195-31832 | Strat Land Exploration Company only | Hansford, TXAlpar (Viola) | PluggedOil | 10,200 | Oct 22, 2008 | — | — |
| Eanes South Viola #742-337-33700 | Chaparral Energy L.L.C. only | Montague, TXEanes (Viola Lime) | Not on scheduleOil | 7,800 | Aug 24, 2006 | — | — |
| Aog-Evans #142-337-33855 | Trio Consulting & Management LLC only | Montague, TXBoedeker South (Viola Lime) | PluggedOil | 7,500 | Jul 20, 2006 | — | — |
| Huffhines R L #142-181-31412 | Heape Exploration Inc. only | Grayson, TXGordonville West (Viola) | PluggedOil | 17,500 | May 19, 2006 | — | — |
| Q. Little #942-181-31399 | Flintlock Exploration LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 9,000 | May 27, 2005 | — | — |
| Brown J. N. #142-181-31395 | Tatanka Operating LLC only | Grayson, TXGordonville West (Viola) | PluggedOil | 19,500 | Jan 26, 2005 | — | — |
| Kris #142-181-31391 | BKM Production only | Grayson, TXMineral Creek West (Viola) | PluggedGas | 15,000 | Sep 30, 2004 | — | — |
| Bryant #142-181-02009 | Mack Energy Co. only | Grayson, TXPerrin N. Afb (Viola) | Not on scheduleOil | 11,700 | Mar 17, 2004 | — | — |
| Crawford #242-337-33586 | Wise Production Company only | Montague, TXWales (Viola) | PluggedOil | 7,200 | Nov 14, 2003 | — | — |
| Rich a #142-181-31373 | Heape Exploration Inc. only | Grayson, TXGordonville West (Viola) | PluggedOil | 17,000 | Oct 31, 2003 | — | — |
| Kusch O. F. et al #1 #142-181-31364 | Cholla Petroleum Inc. only | Grayson, TXSherman (Viola Lime) | PluggedOil | 10,800 | Oct 3, 2002 | — | — |
| Briar-Creek #142-497-35045 | Briar Energy Corporation only | Wise, TXBriar Energy (Viola) | PluggedOil | 7,250 | Aug 1, 2002 | — | — |
| Mayfield #242-337-00157 | Peterson Oil and Gas LLC only | Montague, TXBoedeker SE. (Viola Limestone) | ActiveOil | 6,800 | Apr 30, 2002 | — | — |
| Knapp #142-497-31879 | Devon Energy Operating Co. L.P. only | Wise, TXPruitt (Viola Lime) | Not on scheduleGas | 8,150 | Jul 26, 2001 | — | — |
| Quinn #142-337-33326 | Fidelity Petroleum Corporation only | Montague, TXBowie (Viola Limestone) | PluggedOil | 7,300 | May 9, 2000 | — | — |
| Blakley #142-497-33041 | Mitchell Energy Company L.P. only | Wise, TXPool (Viola Lime) | Not on scheduleGas | 7,858 | Apr 13, 2000 | — | — |
| McBee J. R. #942-181-31337 | Cholla Petroleum Inc. only | Grayson, TXBig Mineral Creek (Viola) | PluggedOil | 8,650 | Apr 22, 1999 | — | — |
| Cantwell #142-337-33004 | Bandera Exploration Company only | Montague, TXBandera-Lila-Lyn (Viola) | Not on scheduleGas | 7,500 | Oct 9, 1998 | — | — |
| Gifford #142-337-32086 | Cooke & Montague Oper. Co. Inc. only | Montague, TXBoedeker SE. (Viola Limestone) | PluggedOil | 7,200 | Jun 2, 1998 | — | — |
| Barnes J. E. #742-181-31329 | Flintlock Exploration LLC only | Grayson, TXBig Mineral Creek (Viola) | ActiveOil | 9,850 | Jan 22, 1998 | — | — |
| Seabourn #142-077-34736 | Bennett Production Corporation only | Clay, TXHenrietta E. (Viola) | PluggedOil | 7,200 | May 15, 1997 | — | — |
| Schwarz Dieter #1 U42-121-30618 | BKV Barnett LLC only | Denton, TXPruitt (Viola Lime) | ActiveGas | 8,500 | Sep 27, 1995 | — | — |
| Joplin Unit #1WI42-337-33050 | Grace Jack Production Co LLC only | Montague, TXBoedeker SE. (Viola Limestone) | PluggedOil | 1,400 | Aug 23, 1995 | — | — |
| Hoeldtke-Zetzsche Unit #1 #2 H42-337-01576 | Ingram J. Oil & Gas Inc. only | Montague, TXBowie (Viola Limestone) | Not on scheduleOil | 6,526 | Jun 5, 1990 | — | — |