| 919437 | Oct 23, 2026 | Oct 21, 2026 | Walter Exploration Company | Nolan | Big Eight #1 | 5,450 | 35333773 |
| 915139 | Apr 28, 2026 | Apr 28, 2026 | Walter Exploration Company | Nolan | East Shore Unit #2 | 4,600 | 35333767 |
| 909833 | Aug 15, 2025 | Aug 15, 2025 | Walter Exploration Company | Nolan | East Shore Unit #1 | 4,600 | 35333762 |
| 876687 | Feb 7, 2022 | Feb 7, 2022 | Walter Exploration Company | Nolan | Silver Bullet #1 | 7,000 | 35333736 |
| 865421 | Oct 8, 2020 | Oct 8, 2020 | Walter Exploration Company | Nolan | Love #1 | 5,000 | 35333721 |
| 864962 | Sep 4, 2020 | Sep 4, 2020 | Walter Exploration Company | Nolan | Freedom #1 | 7,000 | 35333720 |
| 850588 | Mar 8, 2019 | Mar 8, 2019 | Walter Exploration Company | Fisher | Faith #1 | 7,500 | 15133119 |
| 848296 | Jan 9, 2019 | Jan 9, 2019 | Walter Exploration Company | Nolan | Big Heart #1 | 6,800 | 35333677 |
| 835745 | Jan 30, 2018 | Jan 30, 2018 | Walter Exploration Company | Stonewall | Ferguson #1 | 6,500 | 43334156 |
| 835354 | Jan 26, 2018 | Jan 26, 2018 | Walter Exploration Company | Nolan | Oatman #1 | 5,000 | 35333652 |
| 821611 | Jan 10, 2017 | Jan 10, 2017 | Walter Exploration Company | Nolan | Texas Crude #1 | 7,500 | 35333617 |
| 818922 | Oct 6, 2016 | Oct 6, 2016 | Walter Exploration Company | Nolan | Birdsnest #1 | 6,000 | 35333612 |
| 815119 | Apr 22, 2016 | Apr 22, 2016 | Walter Exploration Company | Nolan | McAdams #2 | 6,696 | 35330688 |
| 814645 | Mar 31, 2016 | Mar 31, 2016 | Walter Exploration Company | Nolan | McAdams #3 | 6,733 | 35333445 |
| 805639 | Apr 23, 2015 | Apr 23, 2015 | Walter Exploration Company | Nolan | Brown #8 | 6,200 | 35333565 |
| 804857 | Mar 24, 2015 | Mar 24, 2015 | Walter Exploration Company | Nolan | Raymond #1 | 7,500 | 35333563 |
| 802170 | Dec 30, 2014 | Dec 30, 2014 | Walter Exploration Company | Nolan | Wight #2 | 7,300 | 35333555 |
| 799650 | Nov 18, 2014 | Nov 18, 2014 | Walter Exploration Company | Nolan | Wight #1 | 7,500 | 35330288 |
| 791759 | Sep 4, 2014 | Sep 4, 2014 | Walter Exploration Company | Nolan | Joe Young #12 | 5,808 | 35333041 |
| 791740 | Sep 4, 2014 | Sep 4, 2014 | Walter Exploration Company | Nolan | Sims #1 | 5,728 | 35333044 |
| 790472 | Aug 6, 2014 | Aug 6, 2014 | Walter Exploration Company | Nolan | Joe Young #4 | 5,800 | 35333016 |
| 787331 | May 23, 2014 | May 23, 2014 | Walter Exploration Company | Nolan | Sisters #3 | 4,500 | 35333506 |
| 772288 | Oct 29, 2013 | Oct 29, 2013 | Walter Exploration Company | Nolan | McAdams #4 | 7,000 | 35333463 |
| 766220 | Jul 11, 2013 | Jul 11, 2013 | Walter Exploration Company | Nolan | McAdams #3 | 7,000 | 35333445 |
| 765439 | Jun 27, 2013 | Jun 27, 2013 | Walter Exploration Company | Nolan | Cole #1 | 7,500 | 35332630 |
| 764547 | Jun 25, 2013 | Jun 25, 2013 | Walter Exploration Company | Victoria | Ruschhaupt #9 | 12,500 | 46933811 |
| 758385 | Mar 19, 2013 | Mar 19, 2013 | Walter Exploration Company | Nolan | Brown #7 | 6,800 | 35333407 |
| 757730 | Mar 4, 2013 | Mar 4, 2013 | Walter Exploration Company | Nolan | McAdams #2 | 6,696 | 35330688 |
| 748928 | Oct 4, 2012 | Oct 4, 2012 | Walter Exploration Company | Stonewall | Walter Smith Unit #22 | 5,800 | 43333856 |
| 747597 | Sep 13, 2012 | Sep 13, 2012 | Walter Exploration Company | Nolan | Brown #6 | 6,600 | 35333365 |
| 744852 | Jul 26, 2012 | Jul 26, 2012 | Walter Exploration Company | Stonewall | Walter Smith Unit #21 | 5,800 | 43333847 |
| 744553 | Jul 24, 2012 | Jul 24, 2012 | Walter Exploration Company | Nolan | McAdams Lambert Unit #1 | 7,500 | 35333351 |
| 742333 | Jun 28, 2012 | Jun 28, 2012 | Walter Exploration Company | Stonewall | Walter Smith Unit #8 | 5,597 | 43332371 |
| 743092 | Jun 26, 2012 | Jun 26, 2012 | Walter Exploration Company | Stonewall | Walter Smith Unit #20 | 6,000 | 43333835 |
| 741166 | Jun 12, 2012 | Jun 12, 2012 | Walter Exploration Company | Nolan | Brown #5 | 7,500 | 35333341 |
| 740176 | Jun 4, 2012 | Jun 4, 2012 | Walter Exploration Company | Nolan | Fry #2 | 6,840 | 35333271 |
| 740079 | May 21, 2012 | May 21, 2012 | Walter Exploration Company | Nolan | Brown #3 | 7,500 | 35333324 |
| 740232 | May 17, 2012 | May 17, 2012 | Walter Exploration Company | Nolan | Carolyn Vanoven #1 | 7,500 | 35333330 |
| 740232Amendment | May 17, 2012 | May 17, 2012 | Walter Exploration Company | Nolan | Carolyn Vanoven #1 | 7,500 | 35333330 |
| 740160 | May 17, 2012 | May 17, 2012 | Walter Exploration Company | Nolan | Brown #4 | 7,500 | 35333333 |
| 733932 | Mar 2, 2012 | Mar 2, 2012 | Walter Exploration Company | Stonewall | Walter Smith Unit #19 | 5,800 | 43333797 |
| 733581 | Feb 16, 2012 | Feb 16, 2012 | Walter Exploration Company | Stonewall | I. E. Smith #26 | 5,600 | 43333790 |
| 729358 | Dec 13, 2011 | Dec 13, 2011 | Walter Exploration Company | Nolan | Fry #2 | 7,100 | 35333271 |
| 728990 | Dec 1, 2011 | Dec 1, 2011 | Walter Exploration Company | Nolan | Brown #2 | 7,500 | 35300583 |
| 727171 | Nov 4, 2011 | Nov 4, 2011 | Walter Exploration Company | Nolan | Brown #1 | 7,300 | 35333263 |
| 717721 | Jun 13, 2011 | Jun 13, 2011 | Walter Exploration Company | Nolan | McAdams #1 | 7,000 | 35333215 |
| 709247 | Feb 8, 2011 | Feb 8, 2011 | Walter Exploration Company | Nolan | Young Boyd Unit #1 | 4,400 | 35333187 |
| 708126 | Jan 13, 2011 | Jan 13, 2011 | Walter Exploration Company | Nolan | Fry #1 | 7,000 | 35333185 |
| 704057 | Oct 28, 2010 | Oct 28, 2010 | Walter Exploration Company | Nolan | Lambert #1 | 7,000 | 35333170 |
| 695201 | May 25, 2010 | May 25, 2010 | Walter Exploration Company | Nolan | Sisters #2 | 4,999 | 35333137 |
| 695585 | May 11, 2010 | May 11, 2010 | Walter Exploration Company | Nolan | Joe Young #7 | 5,900 | 35333031 |
| 695108 | May 3, 2010 | May 3, 2010 | Walter Exploration Company | Nolan | Sims #2 | 5,900 | 35333136 |
| 692416 | Mar 16, 2010 | Mar 16, 2010 | Walter Exploration Company | Nolan | Joe Young #20 | 5,900 | 35333127 |
| 691486 | Feb 24, 2010 | Feb 24, 2010 | Walter Exploration Company | Nolan | Joe Young #19 | 5,900 | 35333124 |
| 691324 | Feb 17, 2010 | Feb 17, 2010 | Walter Exploration Company | Nolan | Joe Young #18 | 5,950 | 35333123 |
| 685280 | Sep 24, 2009 | Sep 24, 2009 | Walter Exploration Company | Nolan | Joe Young #17 | 5,900 | 35333109 |
| 684095 | Aug 17, 2009 | Aug 17, 2009 | Walter Exploration Company | Nolan | Joe Young #6 | 5,835 | 35333030 |
| 683770 | Aug 14, 2009 | Aug 14, 2009 | Walter Exploration Company | Nolan | Paige #1 | 4,200 | 35332558 |
| 684071 | Aug 12, 2009 | Aug 12, 2009 | Walter Exploration Company | Nolan | Joe Young #14 | 5,900 | 35333050 |
| 675619 | Dec 2, 2008 | Dec 2, 2008 | Walter Exploration Company | Nolan | Young, Joe #16 | 5,900 | 35333086 |
| 670632 | Sep 24, 2008 | Sep 24, 2008 | Walter Exploration Company | Nolan | Joe Young #15 | 5,900 | 35333069 |
| 669711 | Sep 12, 2008 | Sep 12, 2008 | Walter Exploration Company | Nolan | Joe Young #13 | 5,900 | 35333061 |
| 667983 | Aug 6, 2008 | Aug 6, 2008 | Walter Exploration Company | Nolan | Joe Young #14 | 5,900 | 35333050 |
| 665356 | Jul 17, 2008 | Jul 17, 2008 | Walter Exploration Company | Nolan | Sisters #1 | 5,900 | 35333046 |
| 665102 | Jul 14, 2008 | Jul 14, 2008 | Walter Exploration Company | Nolan | Sims #1 | 5,900 | 35333044 |
| 664516 | Jul 8, 2008 | Jul 8, 2008 | Walter Exploration Company | Nolan | Young, Joe #10 | 5,900 | 35333037 |
| 664524 | Jul 7, 2008 | Jul 7, 2008 | Walter Exploration Company | Nolan | Young, Joe #12 | 5,900 | 35333041 |
| 664519 | Jul 2, 2008 | Jul 2, 2008 | Walter Exploration Company | Nolan | Young, Joe #11 | 5,900 | 35333036 |
| 662228 | Jun 5, 2008 | Jun 5, 2008 | Walter Exploration Company | Nolan | Young, Joe #9 | 5,900 | 35333034 |
| 662224 | Jun 5, 2008 | Jun 5, 2008 | Walter Exploration Company | Nolan | Young, Joe #8 | 5,900 | 35333033 |
| 661712 | May 29, 2008 | May 29, 2008 | Walter Exploration Company | Nolan | Young, Joe #7 | 5,900 | 35333031 |
| 660729 | May 14, 2008 | May 14, 2008 | Walter Exploration Company | Nolan | Young, Joe #6 | 5,900 | 35333030 |
| 659502 | Apr 26, 2008 | Apr 26, 2008 | Walter Exploration Company | Nolan | Joe Young #5 | 5,900 | 35333026 |
| 657993 | Apr 7, 2008 | Apr 7, 2008 | Walter Exploration Company | Nolan | Joe Young #4 | 5,900 | 35333016 |
| 656980 | Mar 20, 2008 | Mar 20, 2008 | Walter Exploration Company | Victoria | Ruschhaupt #10 | 11,910 | 46933871 |
| 656757 | Mar 14, 2008 | Mar 14, 2008 | Walter Exploration Company | Nolan | Joe Young #3 | 5,900 | 35333014 |
| 653340 | Jan 25, 2008 | Jan 25, 2008 | Walter Exploration Company | Nolan | Joe Young #205 | 6,400 | 35333008 |
| 652948 | Jan 17, 2008 | Jan 17, 2008 | Walter Exploration Company | Nolan | Windmill #1060 | 6,800 | 35333006 |
| 652948Amendment | Jan 17, 2008 | Jan 17, 2008 | Walter Exploration Company | Nolan | Windmill #1060 | 6,800 | 35333006 |
| 648556 | Jan 8, 2008 | Jan 8, 2008 | Walter Exploration Company | Stonewall | Green #1 | 3,100 | 43301508 |
| 634333 | Mar 6, 2007 | Mar 6, 2007 | Walter Exploration Company | Stonewall | Pinnacle #1 | 5,600 | 43333352 |
| 619198 | Jul 11, 2006 | Jul 11, 2006 | Walter Exploration Company | Stonewall | Willow Creek #5 | 4,800 | 43333332 |
| 619197 | Jul 11, 2006 | Jul 11, 2006 | Walter Exploration Company | Stonewall | Willow Creek #6 | 4,800 | 43333331 |
| 606376 | Sep 16, 2005 | Sep 16, 2005 | Walter Exploration Company | Victoria | Mission Valley #1 | 13,000 | 46933936 |
| 552456 | Oct 21, 2004 | Oct 21, 2004 | Walter Exploration Company | Stonewall | Smith, I E #25 | 4,700 | 43333131 |
| 552456Amendment | Oct 21, 2004 | Oct 21, 2004 | Walter Exploration Company | Stonewall | Smith, I E #25 | 5,100 | 43333131 |
| 551870 | Oct 19, 2004 | Oct 19, 2004 | Walter Exploration Company | Victoria | Ruschhaupt #10 | 13,000 | 46933871 |
| 550588 | Sep 10, 2004 | Sep 10, 2004 | Walter Exploration Company | Stonewall | Double Fork #1 | 6,500 | 43333310 |
| 545649 | May 13, 2004 | May 13, 2004 | Walter Exploration Company | Victoria | Walter Ruschhaupt Unit #1 | 13,000 | 46933836 |
| 545649Amendment | May 13, 2004 | May 13, 2004 | Walter Exploration Company | Victoria | Walter Ruschhaupt Unit #1 | 13,000 | 46933836 |
| 542789 | Mar 5, 2004 | Mar 5, 2004 | Walter Exploration Company | Victoria | Ruschaupt #9 | 13,000 | 46933811 |
| 539602 | Dec 12, 2003 | Dec 12, 2003 | Walter Exploration Company | Victoria | Ruschaupt #8 | 3,300 | 46933794 |
| 536400 | Sep 18, 2003 | Sep 18, 2003 | Walter Exploration Company | Victoria | Ruschhaupt #7 | 3,050 | 46933766 |
| 536101 | Sep 17, 2003 | Sep 17, 2003 | Walter Exploration Inc. | Stonewall | Willow Creek #1 | 4,800 | 43333288 |
| 536049 | Sep 4, 2003 | Sep 4, 2003 | Walter Exploration Company | Stonewall | Walter Smith Unit #18 | 4,700 | 43333285 |
| 535731 | Aug 29, 2003 | Aug 29, 2003 | Walter Exploration Company | Victoria | Ruschhaupt #6 | 2,000 | 46933755 |
| 535341 | Aug 20, 2003 | Aug 20, 2003 | Walter Exploration Company | Victoria | Ruschhaupt #5 | 2,500 | 46933751 |
| 532780 | Jun 18, 2003 | Jun 18, 2003 | Walter Exploration Company | Victoria | Ruschhaupt #2X | 12,100 | 46900832 |
| 527728 | Feb 3, 2003 | Feb 3, 2003 | Walter Exploration Company | Stonewall | Smith, I. E. #23 | 6,700 | 43333243 |
| 527727 | Jan 31, 2003 | Jan 31, 2003 | Walter Exploration Company | Stonewall | Potter, Walter #1 | 4,458 | 43300105 |