| Hancock #242-089-32446 | Viper S.W.D. LLC | Colorado, TXProvident City NE (LWR Wx. Cons) | PluggedGas | 17,800 | Apr 4, 2007 | — | — |
| Kountze-Couch #142-481-30498 | Viper S.W.D. LLC | Wharton, TXK-C (Frio 6800) | PluggedOil | 7,306 | Mar 19, 2007 | — | — |
| Gep LP/Goff Mineral Trust #342-239-33390 | Viper S.W.D. LLC | Jackson, TXElbert Goff (3700) | PluggedGas | 5,000 | Sep 22, 2006 | — | — |
| Morton #1D42-239-31235 | Viper S.W.D. LLC | Jackson, TXWayside (Frio 3700) | PluggedGas | 4,600 | Jul 20, 2006 | — | — |
| Gep LP/Goff Mineral Trust #142-239-33371 | Viper S.W.D. LLC | Jackson, TXElbert Goff (Frio 4230) | PluggedGas | 14,000 | May 2, 2006 | — | — |
| Guenther #142-481-34761 | Viper S.W.D. LLC | Wharton, TXNada (Catahoula) | PluggedGas | 5,200 | Apr 29, 2005 | — | — |
| Mahalitic Joan #142-481-34751 | Viper S.W.D. LLC | Wharton, TXBonus S.E. (Frio 4300) | PluggedGas | 5,000 | Apr 14, 2005 | — | — |
| Lexy #242-481-34756 | Viper S.W.D. LLC | Wharton, TXB U Ranch (Marginulina 5300) | PluggedGas | 7,000 | Apr 1, 2005 | — | — |
| Wilbeck #142-239-33290 | Viper S.W.D. LLC | Jackson, TXGanado (Shallow) | PluggedGas | 3,350 | Dec 13, 2004 | — | — |
| Hancock #142-089-32389 | Viper S.W.D. LLC | Colorado, TXProvident City NE (LWR Wx. Cons) | PluggedGas | 17,800 | Oct 28, 2004 | — | — |
| B & M Farms #142-481-34613 | Viper S.W.D. LLC | Wharton, TXEl Campo (6200) | PluggedOil | 6,500 | Jan 23, 2004 | — | — |
| Geo-Goldenrod #742-239-33243 | Viper S.W.D. LLC | Jackson, TXElbert Goff (3700) | PluggedGas | 5,000 | Nov 26, 2003 | — | — |
| Lehrer GU a #142-089-31761 | Viper S.W.D. LLC | Colorado, TXGraceland (Cruel) | ActiveGas | 14,173 | Oct 21, 2003 | — | — |
| Geo-Goldenrod #342-239-33229 | Viper S.W.D. LLC | Jackson, TXGrace (Frio 4450) | PluggedGas | 7,500 | Aug 19, 2003 | — | — |
| Lehrer #242-089-32344 | Viper S.W.D. LLC | Colorado, TXEaster (15120) | PluggedGas | 17,000 | Aug 18, 2003 | — | — |
| Kane #142-089-31684 | Viper S.W.D. LLC | Colorado, TXNada NE. (Wilcox 9700) | PluggedGas | 10,000 | Apr 7, 2003 | — | — |
| Wendel #142-481-34511 | Viper S.W.D. LLC | Wharton, TXMenefee (Yegua 9050) | PluggedGas | 10,000 | Feb 3, 2003 | — | — |
| 441 S. Farms Ranch Unit #142-481-34509 | Viper S.W.D. LLC | Wharton, TXHillje (5700) | PluggedOil | 7,400 | Jan 29, 2003 | — | — |
| Goff #242-239-33154 | Viper S.W.D. LLC | Jackson, TXTopsy (3900) | PluggedGas | 8,500 | Dec 5, 2002 | — | — |
| Goff Unit #242-239-33167 | Viper S.W.D. LLC | Jackson, TXWearden Ranch (3750) | PluggedGas | 4,500 | Nov 30, 2001 | — | — |
| Lehrer D #442-089-32268 | Viper S.W.D. LLC | Colorado, TXEaster S. (Heartbreak) | PluggedGas | 16,000 | Dec 1, 2000 | — | — |
| Zimmerman #1042-479-37525 | Viper S.W.D. LLC | Webb, TXLa Perla (Lobo Cons.) | PluggedGas | 10,200 | Jun 9, 2000 | — | — |
| Wendel Anna Jane #142-481-33387 | Viper S.W.D. LLC | Wharton, TXJones Creek (8300) | PluggedGas | 8,500 | Aug 6, 1997 | — | — |
| Bures #142-239-32939 | Viper S.W.D. LLC | Jackson, TXMustang Creek East (6150) | Temporarily abandonedGas | 6,580 | Mar 3, 1997 | — | — |
| Hlavinka a #142-239-32926 | Viper S.W.D. LLC | Jackson, TXMustang Creek East (6150) | PluggedGas | 6,150 | Nov 21, 1996 | — | — |
| Gold Clarine #142-089-32002 | Viper S.W.D. LLC | Colorado, TXGarwood S.E. (Y-2) | PluggedGas | 6,600 | Sep 10, 1996 | — | — |
| Staff Frank L. Jr. #442-481-33833 | Viper S.W.D. LLC | Wharton, TXPopp (2600) | PluggedGas | 2,800 | Oct 6, 1995 | — | — |
| Stovall Guy F. Trust #242-481-33701 | Viper S.W.D. LLC | Wharton, TXMott Slough (Yegua) | PluggedGas | 8,500 | Apr 13, 1994 | — | — |
| Brothers Cattle Co. Inc #442-481-33697 | Viper S.W.D. LLC | Wharton, TXTenna (Hillje Sand) | PluggedOil | 5,000 | Mar 29, 1994 | — | — |
| Wegenhoft I.W. #242-481-33644 | Viper S.W.D. LLC | Wharton, TXTenna (Hillje Sand) | PluggedOil | 5,300 | Jun 17, 1993 | — | — |
| Hillje Estate #1A42-481-33624 | Viper S.W.D. LLC | Wharton, TXTenna (Hillje Sand) | PluggedOil | 4,300 | Mar 11, 1993 | — | — |
| Hillje Oil Unit #142-481-33598 | Viper S.W.D. LLC | Wharton, TXTenna (Hillje Sand) | PluggedOil | 4,300 | Nov 10, 1992 | — | — |
| Brothers Cattle Co. Inc #342-481-33568 | Viper S.W.D. LLC | Wharton, TXTenna (Hillje Sand) | PluggedOil | 4,300 | Apr 22, 1992 | — | — |
| Baylor University et al #142-481-33463 | Viper S.W.D. LLC | Wharton, TXMott Slough (Yegua) | PluggedGas | 8,300 | Mar 18, 1992 | — | — |
| Wegenhoft I. W. #142-481-33564 | Viper S.W.D. LLC | Wharton, TXTrans-Tex (3000 Cat.) | PluggedGas | 9,200 | Mar 17, 1992 | — | — |
| Brothers Cattle Co. Inc #142-481-33414 | Viper S.W.D. LLC | Wharton, TXTenna (Hillje Sand) | PluggedOil | 5,300 | Dec 2, 1991 | — | — |
| Mauritz Unit #342-239-31532 | Viper S.W.D. LLC | Jackson, TXCaracahua Creek (TM a LO FB-E) | PluggedOil | 9,800 | Mar 15, 1990 | — | — |
| Kane-Brandon Gas Unit #542-089-31764 | Viper S.W.D. LLC | Colorado, TXNada (Yegua 7000) | PluggedOil | 20,000 | Dec 5, 1989 | — | — |
| Thomas E.W. #2 D42-481-33332 | Viper S.W.D. LLC | Wharton, TXBoling | PluggedOil | 750 | Nov 21, 1989 | — | — |
| Meek -E- #442-481-32783 | Viper S.W.D. LLC | Wharton, TXSwanson (2950) | Shut inGas | 5,147 | Nov 16, 1989 | — | — |
| Thomas E.W. #1 D42-481-33303 | Viper S.W.D. LLC | Wharton, TXBoling | PluggedOil | 700 | Sep 13, 1989 | — | — |
| Mauritz T.N. Etal #1 T42-239-31898 | Viper S.W.D. LLC | Jackson, TXLa Ward NE. (6480) | PluggedOil | 7,415 | May 27, 1988 | — | — |
| Pocchiola el al Unit #142-321-31540 | Viper S.W.D. LLC | Matagorda, TXPheasant East (Melbourne Lo.) | PluggedOil | 9,500 | Apr 13, 1988 | — | — |
| Burditt Allen L. #142-239-32226 | Viper S.W.D. LLC | Jackson, TXCarancahua Creek (TM C LO) | PluggedOil | 10,000 | Aug 14, 1985 | — | — |
| Henry #142-481-32773 | Viper S.W.D. LLC | Wharton, TXDaboval (7210) | PluggedOil | 7,400 | Dec 13, 1984 | — | — |
| Pierce Estate #342-481-32435 | Viper S.W.D. LLC | Wharton, TXB U Ranch (Seg C Marg.) | ActiveOil | 5,460 | Dec 21, 1982 | — | — |
| Viper SWD #142-481-03506 | Viper S.W.D. LLC | Wharton, TXHutchins South (Frio #5) | PluggedGas | 6,000 | May 24, 1982 | — | — |
| Sorrell #1142-481-32114 | Viper S.W.D. LLC | Wharton, TXSpanish Camp (3300) | PluggedOil | 6,000 | Feb 2, 1981 | — | — |
| Mauritz Unit #242-239-30607 | Viper S.W.D. LLC | Jackson, TXCaracahua Creek (TM a LO FB-E) | PluggedOil | 9,850 | Jan 23, 1980 | — | — |
| Mauritz Unit #142-239-30571 | Viper S.W.D. LLC | Jackson, TXCaracahua Creek (TM a LO FB-E) | PluggedOil | — | — | — | — |