| Erickson Clark #1Y42-297-34666 | Sandel Operating Company | Live OakMaxine East (8200) | ActiveGas | 8,503 | Dec 13, 2023 | 3 | Apr 2026 |
| Peebles #142-297-33207 | Sandel Operating Company | Live OakGeorge West West (8180) | Temporarily abandonedGas | 11,005 | Feb 2, 2022 | 3 | May 2022 |
| Haisley #242-409-32555 | Sandel Operating Company | San PatricioHarvey (15-B) | PluggedGas | 11,000 | Dec 18, 2018 | 2 | Feb 2022 |
| Kennon #242-225-31357 | Sandel Operating Company | HoustonFort Trinidad (Glen Rose -D-) | PluggedOil | 11,000 | Aug 15, 2016 | 3 | Jul 2017 |
| Duncan F. B. #0201ST42-481-34935 | Sandel Operating Company | WhartonBernard W. (7850) | Temporarily abandonedGas | 12,150 | Sep 17, 2015 | 3 | Mar 2022 |
| County Road #1HHZ42-225-31394 | Sandel Operating Company | HoustonFt. Trinidad E. (Edwards) | PluggedOil | 10,500 | Jun 10, 2015 | 1 | Jan 2016 |
| Nelson C. S. #1142-297-34351 | Sandel Operating Company | Live OakGeorge West West (10430) | Temporarily abandonedGas | 10,754 | Jan 30, 2015 | 3 | Aug 2025 |
| Friedrichs #142-123-33654 | Sandel Operating Company | De WittMission Valley W. (Wilcox G) | ActiveGas | 10,827 | Jun 26, 2014 | 1 | Aug 2026 |
| Dan Ackley #142-225-30359 | Sandel Operating Company | HoustonFt. Trinidad E. (Edwards) | PluggedOil | 10,605 | Jun 12, 2014 | 2 | Mar 2020 |
| Nelson C. S. #342-297-32521 | Sandel Operating Company | Live OakGeorge West West (9500) | ActiveGas | 13,000 | Jan 31, 2014 | 3 | Aug 2026 |
| St. Regis Paper Co. C #142-225-30413 | Sandel Operating Company | HoustonFort Trinidad (Glen Rose -D-) | ActiveGas | 10,613 | Jun 21, 2013 | 2 | Aug 2026 |
| Dan Ackley B #242-225-31234 | Sandel Operating Company | HoustonFort Trinidad (Glen Rose -D-) | ActiveGas | 10,700 | Jun 1, 2012 | 2 | Aug 2026 |
| J. W. McClelland G. U. #2 #142-297-33295 | Sandel Operating Company | Live OakOakville (Wilcox Cons.) | ActiveGas | 9,815 | Feb 8, 2012 | 4 | Aug 2026 |
| Schreiner Ranch Trust II #242-297-33177 | Sandel Operating Company | Live OakOakville (Wilcox Cons.) | ActiveGas | 11,514 | Nov 4, 2011 | 4 | Aug 2026 |
| Gilbert-Freeman Unit #542-481-35195 | Sandel Operating Company | WhartonCypress Eagle (Wilcox) | ActiveGas | 11,985 | May 17, 2011 | 1 | Jul 2026 |
| Shefcik et al Gas Unit #242-239-33560 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | Temporarily abandonedGas | 10,700 | Mar 10, 2011 | 1 | Aug 2013 |
| Windy Hill #242-313-30850 | Sandel Operating Company | MadisonDay | PluggedOil | 2,250 | May 5, 2010 | 1 | Sep 2019 |
| Windy Hill #3A42-313-30846 | Sandel Operating Company | MadisonDay | PluggedOil | 2,750 | Mar 17, 2010 | 2 | Sep 2019 |
| Windy Hill #142-313-30845 | Sandel Operating Company | MadisonDay | PluggedOil | 10,250 | Mar 11, 2010 | 1 | Sep 2019 |
| Gardner Duncan #142-481-35116 | Sandel Operating Company | WhartonCypress Raven (Wilcox) | Temporarily abandonedGas | 10,436 | Jan 27, 2010 | 1 | Mar 2024 |
| Bernard River Land Development #142-039-04069 | Sandel Operating Company | BrazoriaSweeney (Frio 11300 Sand) | PluggedGas | 14,005 | Sep 22, 2008 | 1 | Jun 2021 |
| Gilbert-Freeman #342-481-35001 | Sandel Operating Company | WhartonCypress Eagle (Wilcox) | Temporarily abandonedGas | 12,100 | Jun 5, 2008 | 1 | Jan 2023 |
| Gilbert-Freeman #242-481-34979 | Sandel Operating Company | WhartonCypress Eagle (Wilcox) | ActiveGas | 12,200 | Apr 26, 2008 | 1 | Jun 2026 |
| Westmoreland #142-481-34158 | Sandel Operating Company | WhartonBernard W. (7700) | PluggedGas | 8,800 | Mar 7, 2008 | 3 | Aug 2015 |
| Duncan F. B. #342-481-34962 | Sandel Operating Company | WhartonCypress Eagle (Wilcox) | ActiveGas | 12,300 | Feb 25, 2008 | 1 | Jul 2026 |
| Gilbert-Freeman #142-481-34938 | Sandel Operating Company | WhartonCypress Eagle (Wilcox) | ActiveGas | 12,205 | Nov 7, 2007 | 1 | May 2025 |
| Duncan F. B. #142-481-34901 | Sandel Operating Company | WhartonCypress Eagle (Wilcox) | Temporarily abandonedGas | 16,030 | Apr 24, 2007 | 1 | Mar 2016 |
| Houdmann-Buxkamper Gas Unit #342-297-34713 | Sandel Operating Company | Live OakMaxine East (8400) | ActiveGas | 8,394 | Dec 19, 2006 | 1 | Aug 2026 |
| Pawlik GU1 #342-297-34376 | Sandel Operating Company | Live OakFant S. (Wilcox 11300) | ActiveGas | 12,500 | Sep 14, 2006 | 3 | Aug 2026 |
| Nelsen C #142-321-32140 | Sandel Operating Company | MatagordaPalacios East (Frio 9180 Sand) | PluggedGas | 10,400 | Aug 28, 2006 | 1 | May 2012 |
| Schreiner Ranch Trust II #642-297-33269 | Sandel Operating Company | Live OakOakville (Wilcox Cons.) | ActiveGas | 10,419 | Apr 7, 2006 | 2 | Aug 2026 |
| Gerald #142-239-33367 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 12,140 | Mar 23, 2006 | 1 | Aug 2026 |
| Webernick et al Gas Unit #242-239-33365 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 13,000 | Mar 6, 2006 | 1 | Aug 2026 |
| Shefcik et al Gas Unit #342-239-33358 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 12,200 | Jan 23, 2006 | 1 | Aug 2026 |
| Webernick et al Gas Unit #142-239-33345 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 12,200 | Nov 9, 2005 | 2 | Aug 2026 |
| Roberts J. W. #142-039-04059 | Sandel Operating Company | BrazoriaSweeney (11 250) | PluggedGas | 12,000 | Nov 4, 2005 | 3 | May 2013 |
| Shefcik et al Gas Unit #142-239-33341 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 11,927 | Oct 17, 2005 | 3 | Aug 2026 |
| Wearden #142-239-33338 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 13,055 | Sep 30, 2005 | 1 | Aug 2026 |
| Nelson C. S. #1242-297-34636 | Sandel Operating Company | Live OakGeorge West West (10430) | ActiveGas | 10,340 | Aug 19, 2005 | 1 | Aug 2026 |
| Goff #a 142-239-33309 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 12,000 | Apr 19, 2005 | 3 | Aug 2026 |
| Goff #142-239-33303 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 12,325 | Mar 29, 2005 | 2 | Aug 2026 |
| Goff #242-239-33304 | Sandel Operating Company | JacksonBrushy Creek (Wilcox Cons.) | ActiveGas | 12,025 | Mar 29, 2005 | 2 | Aug 2026 |
| Nelson C. S. #642-297-32746 | Sandel Operating Company | Live OakLimes (Wilcox F-1) | Temporarily abandonedGas | 10,050 | Oct 26, 2004 | 2 | Jun 2000 |
| Dos Hombres #1 B42-297-34541 | Sandel Operating Company | Live OakGeorge West W. (Queen City Lo.) | ActiveGas | 6,530 | Dec 11, 2003 | 2 | Aug 2026 |
| Reynolds Gas Unit B #142-039-04089 | Sandel Operating Company | BrazoriaSweeney (11 250) | PluggedGas | 11,802 | Nov 6, 2003 | 2 | Aug 2010 |
| Tindol Unit #142-297-33304 | Sandel Operating Company | Live OakGeorge West West (10430) | ActiveGas | 10,450 | Jun 13, 2003 | 2 | Aug 2026 |
| Haisley #542-409-32712 | Sandel Operating Company | San PatricioCandy B. (Anderson Sand 9500) | PluggedGas | 9,900 | Sep 12, 2002 | 1 | Dec 2006 |
| Savage #542-321-31919 | Sandel Operating Company | MatagordaWadsworth (8600) | PluggedOil | 11,800 | Mar 18, 2002 | 2 | Apr 2007 |
| Reynolds Gas Unit a #142-039-04088 | Sandel Operating Company | BrazoriaSweeney (11 250) | PluggedGas | 11,881 | Sep 28, 2001 | 3 | Aug 2010 |
| Crawford #142-213-30835 | Sandel Operating Company | HendersonSand Trap (James Lime) | PluggedGas | 10,700 | Sep 10, 2001 | 1 | Nov 2002 |