| Banner Estate #2442-443-30887 | Longfellow Energy LP | Terrell, TXBrown Bassett West (Strawn) | ActiveGas | 14,440 | Sep 5, 2001 | — | — |
| Allison #210642-371-37101 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 4,600 | Aug 9, 2001 | — | — |
| Goode Estate B Unit #2 HHZ42-443-30242 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Strawn) | Temporarily abandonedGas | 11,665 | Aug 8, 2001 | — | — |
| West Ranch #340142-371-37095 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 7,175 | Jul 18, 2001 | — | — |
| West Ranch #260542-371-37066 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 6,195 | Mar 23, 2001 | — | — |
| Allison #210342-371-37047 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 5,000 | Jan 3, 2001 | — | — |
| Allison 2 #130242-371-32989 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 8,960 | Jan 2, 2001 | — | — |
| Longfellow XX #10142-371-32812 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 8,315 | Nov 29, 2000 | — | — |
| West Ranch #50842-371-37031 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 5,775 | Oct 13, 2000 | — | — |
| Mitchell C #4842-105-38425 | Longfellow Energy LP | Crockett, TXJM (Ellenburger) | ActiveGas | 14,100 | Aug 28, 2000 | — | — |
| Allison #30342-371-37010 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 6,930 | Aug 28, 2000 | — | — |
| Longfellow #401642-371-37004 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 5,655 | Jul 20, 2000 | — | — |
| Longfellow #401742-371-37002 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 4,839 | Jul 7, 2000 | — | — |
| Longfellow #401542-371-36995 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 4,300 | May 24, 2000 | — | — |
| West Ranch #320242-371-36984 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 5,508 | Feb 25, 2000 | — | — |
| Allison #210242-371-36983 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 5,832 | Feb 17, 2000 | — | — |
| Longfellow #401242-371-36977 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 8,850 | Jan 28, 2000 | — | — |
| West Ranch #310542-371-36965 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 4,839 | Dec 1, 1999 | — | — |
| Allison #30142-371-34132 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 9,275 | Nov 10, 1999 | — | — |
| Mitchell 533 Unit #142-443-30808 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Ellenburger) | ActiveGas | 14,715 | Nov 10, 1999 | — | — |
| West Ranch #320342-371-36942 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 5,036 | Sep 27, 1999 | — | — |
| Longfellow #120242-371-36943 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 8,237 | Sep 22, 1999 | — | — |
| West Ranch #310442-371-36938 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 7,810 | Aug 31, 1999 | — | — |
| West Ranch #320442-371-36918 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 8,272 | Jun 23, 1999 | — | — |
| Longfellow #40342-371-34603 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 11,538 | Mar 26, 1999 | — | — |
| West Ranch 5 #742-371-36904 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 6,900 | Mar 26, 1999 | — | — |
| Longfellow #120142-371-36897 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 8,415 | Mar 5, 1999 | — | — |
| Goode Estate C #8HHZ42-443-30794 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Strawn) | ActiveGas | 11,416 | Jan 6, 1999 | — | — |
| West Ranch 5 #642-371-36890 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 7,725 | Dec 22, 1998 | — | — |
| West Ranch 5 #542-371-36891 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 7,265 | Dec 22, 1998 | — | — |
| West Ranch #310342-371-36885 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 7,803 | Dec 7, 1998 | — | — |
| Longfellow 170 #50142-371-32868 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 13,441 | Aug 26, 1998 | — | — |
| La Escalara #480142-371-31535 | Longfellow Energy LP | Pecos, TXElsinore (Wolfcamp) | Temporarily abandonedGas | 13,110 | Aug 14, 1998 | — | — |
| M.e.p.&p. #142-371-36860 | Longfellow Energy LP | Pecos, TXAllison Ranch (Wolfcamp) | Temporarily abandonedGas | 7,370 | Aug 14, 1998 | — | — |
| West Ranch #260442-371-36858 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 6,995 | Jul 27, 1998 | — | — |
| West Ranch #50142-371-36082 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 5,406 | Jun 23, 1998 | — | — |
| Longfellow #40142-371-33674 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 6,203 | Jun 22, 1998 | — | — |
| Longfellow #40642-371-36849 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 7,017 | Jun 19, 1998 | — | — |
| Longfellow #20142-371-36837 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 7,600 | May 15, 1998 | — | — |
| Mayme K. Martin Unit #2HZ42-443-30306 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Wolfcamp) | Temporarily abandonedGas | 11,683 | May 6, 1998 | — | — |
| Longfellow #401142-371-36830 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 5,506 | Apr 24, 1998 | — | — |
| Mitchell 107 #142-105-38111 | Longfellow Energy LP | Crockett, TXBrown-Bassett (Ellenburger) | ActiveGas | 14,570 | Mar 26, 1998 | — | — |
| Foster 23 #1AHZ42-443-30346 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Ellenburger) | ActiveGas | 14,078 | Feb 25, 1998 | — | — |
| Longfellow #40942-371-36814 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 4,630 | Feb 6, 1998 | — | — |
| Banner Estate #2142-443-30777 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Wolfcamp) | Temporarily abandonedGas | 6,641 | Jan 29, 1998 | — | — |
| Mitchell 10 #142-105-37999 | Longfellow Energy LP | Crockett, TXJM W. (Strawn) | ActiveGas | 11,778 | Jan 16, 1998 | — | — |
| Mayme K. Martin Unit #742-443-30776 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Wolfcamp) | Temporarily abandonedGas | 5,943 | Jan 16, 1998 | — | — |
| West Ranch #442-371-36807 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | Temporarily abandonedGas | 5,765 | Jan 15, 1998 | — | — |
| Longfellow #40742-371-36800 | Longfellow Energy LP | Pecos, TXPinon (Overthrust) | ActiveGas | 5,600 | Jan 7, 1998 | — | — |
| Brown Bassett #742-443-30772 | Longfellow Energy LP | Terrell, TXBrown-Bassett (Wolfcamp) | Temporarily abandonedGas | 6,230 | Dec 31, 1997 | — | — |