| State Tract 38 #380742-057-31801 | Neumin Production Company | Calhoun, TXLavaca Bay (F-49) | PluggedOil | 13,500 | Nov 18, 2014 | — | — |
| Quail Ridge/State Unit #390642-057-31787 | Neumin Production Company | Calhoun, TXLavaca Bay (F-46) | PluggedGas | 13,000 | Mar 7, 2014 | — | — |
| Gallinipper Unit #280142-057-31706 | Neumin Production Company | Calhoun, TXLavaca Bay (F-39) | PluggedGas | 13,000 | Oct 31, 2011 | — | — |
| Quail Ridge/State Unit #390542-057-31781 | Neumin Production Company | Calhoun, TXLavaca Bay (F-46) | PluggedGas | 13,500 | Jul 22, 2011 | — | — |
| Gallinipper Unit #370442-057-31744 | Neumin Production Company | Calhoun, TXLavaca Bay (F-45) | PluggedGas | 13,200 | Feb 6, 2009 | — | — |
| Gallinipper Unit #360242-057-31718 | Neumin Production Company | Calhoun, TXLavaca Bay (F-43) | PluggedGas | 13,000 | Dec 11, 2008 | — | — |
| Le Tourneau #142-183-31965 | Neumin Production Company | Gregg, TXWillow Springs (Cotton Valley) | PluggedGas | 11,500 | Aug 30, 2007 | — | — |
| Dickson J. M. #342-183-31962 | Neumin Production Company | Gregg, TXWillow Springs (Cotton Valley) | PluggedGas | 11,250 | Aug 23, 2007 | — | — |
| Dickson J. M. #142-183-31943 | Neumin Production Company | Gregg, TXWillow Springs (Cotton Valley) | PluggedGas | 11,250 | Jun 22, 2007 | — | — |
| State Tract 10 #142-057-31737 | Neumin Production Company | Calhoun, TXPort Lavaca East (Marg.) | PluggedGas | 10,300 | Apr 3, 2007 | — | — |
| Gallinipper Unit #360542-057-31735 | Neumin Production Company | Calhoun, TXLavaca Bay (F-40-B) | PluggedGas | 13,500 | Mar 1, 2007 | — | — |
| Gallinipper Unit #360442-057-31726 | Neumin Production Company | Calhoun, TXLavaca Bay (F-46) | PluggedGas | 13,000 | Nov 16, 2006 | — | — |
| Gallinipper Unit #360342-057-31721 | Neumin Production Company | Calhoun, TXLavaca Bay (F-44) | PluggedGas | 13,000 | Mar 24, 2006 | — | — |
| Kubecka #142-239-33363 | Neumin Production Company | Jackson, TXFrancitas South (10 100) | PluggedGas | 11,000 | Feb 28, 2006 | — | — |
| Gallinipper Unit #270442-057-31705 | Neumin Production Company | Calhoun, TXLavaca Bay (F-37) | PluggedGas | 13,000 | Sep 6, 2005 | — | — |
| Black Stone #142-039-32902 | Neumin Production Company | Brazoria, TXMartin Ranch (Frio 14 600) | PluggedGas | 15,300 | May 31, 2005 | — | — |
| Ammann #142-089-32404 | Neumin Production Company | Colorado, TXNada (Frio 4100) | PluggedGas | 4,700 | Feb 23, 2005 | — | — |
| Dean #142-469-33859 | Neumin Production Company | Victoria, TXWildcat | PluggedGas | 6,000 | Aug 6, 2004 | — | — |
| Shelton #142-391-32618 | Neumin Production Company | Refugio, TXRefugio-Fox (5500) | PluggedGas | 6,000 | Jul 28, 2004 | — | — |
| Peterson Burge #142-123-31981 | Neumin Production Company | De Witt, TXHenze (Wilcox Lower) | PluggedGas | 15,000 | Jun 29, 2004 | — | — |
| Fucik #142-481-34596 | Neumin Production Company | Wharton, TXMenefee (Frio 5200) | PluggedGas | 6,500 | Dec 15, 2003 | — | — |
| Appling Point GU a #142-239-33153 | Neumin Production Company | Jackson, TXAppling (Seg 3 Kopnicky Upper) | PluggedGas | 13,500 | Aug 4, 2003 | — | — |
| Frey Trust Gas Unit #242-201-32664 | Neumin Production Company | Harris, TXHinkle (Cockfield 5800) | PluggedGas | 6,500 | Jun 23, 2003 | — | — |
| State Tract 79 #342-057-31644 | Neumin Production Company | Calhoun, TXZoller East (Frio -G-) | PluggedOil | 9,500 | Apr 23, 2003 | — | — |
| Frey Trust Gas Unit #142-201-32657 | Neumin Production Company | Harris, TXHinkle (Cockfield 5800) | PluggedGas | 6,100 | Apr 21, 2003 | — | — |
| State Tract 90 #642-057-31538 | Neumin Production Company | Calhoun, TXPanther Reef SW. (Frio E-4) | PluggedGas | 10,750 | Nov 25, 2002 | — | — |
| State Tract 89 #142-057-31629 | Neumin Production Company | Calhoun, TXPanther Reef (Frio Cons.) | PluggedGas | 10,000 | Jul 2, 2002 | — | — |
| State Tract 64 #142-057-31620 | Neumin Production Company | Calhoun, TXMcDowell Point E. (Frio Q) | PluggedOil | 11,000 | Nov 14, 2001 | — | — |
| Stovall #442-089-32185 | Neumin Production Company | Colorado, TXNada (Frio 3970) | PluggedGas | 5,000 | Jul 3, 2001 | — | — |
| Williams #142-391-32391 | Neumin Production Company | Refugio, TXBert Harry (Lower Sinton) | PluggedGas | 6,500 | Apr 23, 2001 | — | — |
| Aluminum Co. of America (Fee) #1142-057-31370 | Neumin Production Company | Calhoun, TXLavaca Bay (F-40-B) | PluggedGas | 14,000 | Nov 20, 2000 | — | — |
| Jacks et al #342-391-32387 | Neumin Production Company | Refugio, TXBig Jim (First Sinton) | PluggedGas | 7,000 | Oct 18, 2000 | — | — |
| West #142-391-32364 | Neumin Production Company | Refugio, TXProtestant (Sinton 4700 Sand) | PluggedGas | 6,000 | Jun 12, 2000 | — | — |
| Jacks et al #142-391-32317 | Neumin Production Company | Refugio, TXBig Jim (Third Sinton) | PluggedGas | 7,500 | Nov 15, 1999 | — | — |
| State Tract 26 #342-057-01311 | Neumin Production Company | Calhoun, TXLavaca Bay (F-39) | PluggedGas | 11,500 | Sep 30, 1999 | — | — |
| State Tract 26 #542-057-31242 | Neumin Production Company | Calhoun, TXLavaca Bay (F-36) | PluggedGas | 11,500 | Aug 6, 1999 | — | — |
| Brown #242-089-32067 | Neumin Production Company | Colorado, TXNada (Catahoula) | PluggedGas | 11,750 | Apr 27, 1999 | — | — |
| Stovall #342-089-32111 | Neumin Production Company | Colorado, TXNada S.E. (4120) | PluggedGas | 5,000 | Dec 30, 1998 | — | — |
| Welder -G- #4842-391-32225 | Neumin Production Company | Refugio, TXPhil Power (5200-B) | PluggedGas | 6,600 | Feb 17, 1998 | — | — |
| State Tract 38 #642-057-31523 | Neumin Production Company | Calhoun, TXLavaca Bay (F-34) | PluggedGas | 13,500 | Sep 25, 1997 | — | — |
| State Tract 86 #142-057-31559 | Neumin Production Company | Calhoun, TXPanther Reef SW. (Frio E-4) | PluggedGas | 10,750 | May 9, 1997 | — | — |
| State Tract 90 #542-057-31375 | Neumin Production Company | Calhoun, TXPanther Reef SW. (Frio E-4) | PluggedGas | 9,800 | Sep 18, 1995 | — | — |
| Drushel Estate #142-239-32863 | Neumin Production Company | Jackson, TXLost Bridge (Laurie) | PluggedGas | 5,100 | Aug 9, 1995 | — | — |
| State Tract 26 #642-057-31361 | Neumin Production Company | Calhoun, TXLavaca Bay (F-34) | PluggedGas | 12,551 | Apr 4, 1995 | — | — |
| Aluminum Co. of America (Fee) #1342-057-31419 | Neumin Production Company | Calhoun, TXLavaca Bay (F-36) | PluggedGas | 14,000 | Mar 29, 1995 | — | — |
| Aluminum Co. of America (Fee) #442-057-01394 | Neumin Production Company | Calhoun, TXLavaca Bay (F-33) | PluggedGas | 11,500 | Mar 8, 1995 | — | — |
| Aluminum Co. of America (Fee) #1442-057-31420 | Neumin Production Company | Calhoun, TXLavaca Bay (F-33) | PluggedGas | 14,000 | Feb 21, 1995 | — | — |
| State Tract 38 #442-057-31335 | Neumin Production Company | Calhoun, TXLavaca Bay (F-43) | PluggedGas | 12,370 | Jul 16, 1991 | — | — |
| State Tract 260 Unit No. 1 #242-239-31730 | Neumin Production Company | Jackson, TXAppling Point (F-21-A) | PluggedGas | 9,670 | May 28, 1991 | — | — |
| Aluminum Co. of America (Fee) #1242-057-31415 | Neumin Production Company | Calhoun, TXLavaca Bay (F-39) | PluggedGas | 14,000 | May 24, 1991 | — | — |