| Oconnor M. E. #2142-391-01852 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FS-1) | PluggedGas | 5,600 | May 11, 2005 | 1 | Dec 2015 |
| O Conner Mary Ellen #5442-391-31250 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FQ-30) | PluggedOil | 6,000 | Oct 25, 2004 | 2 | Jul 2016 |
| O Conner Mary Ellen #5542-391-31251 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FQ-25) | PluggedOil | 6,000 | Oct 25, 2004 | 3 | Jul 2016 |
| O Conner Mary Ellen #34 U42-391-30081 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 5,955 | Apr 30, 2003 | 3 | Jul 2016 |
| O Conner Mary Ellen #4542-391-30584 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 6,400 | Sep 23, 2002 | 5 | Jul 2016 |
| Yzaguirre J. #r 1ST42-505-33161 | Dolphin Petroleum LP | ZapataWildcat | ActiveGas | 10,500 | May 17, 1999 | 5 | Apr 2026 |
| Flinn Heirs #1R42-409-32554 | Dolphin Petroleum LP | San PatricioTaft South (6820) | PluggedOil | 7,300 | Jan 16, 1998 | 1 | Oct 2008 |
| El Oso Cattle Company #142-391-03687 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 6,215 | May 2, 1997 | 2 | Aug 2016 |
| Scull #142-409-32507 | Dolphin Petroleum LP | San PatricioOdem East (3200) | PluggedGas | 5,700 | Sep 25, 1996 | 2 | Aug 2010 |
| Oconnor Mary Ellen #17 U42-391-01870 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FS-96) | PluggedOil | 6,000 | Feb 26, 1996 | 2 | Jul 2016 |
| Yzaguirre J #11U42-505-33198 | Dolphin Petroleum LP | ZapataBob West (L-7) | ActiveGas | 12,425 | Aug 18, 1995 | 2 | Oct 2024 |
| O Conner Mary Ellen #3842-391-30568 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FQ-30) | PluggedOil | 6,400 | Aug 3, 1995 | 3 | Jul 2016 |
| El Oso Cattle Company #2442-391-31215 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (3100) | PluggedGas | 4,250 | May 30, 1995 | 2 | Aug 2016 |
| Ramirez SWD #142-505-33225 | Dolphin Petroleum LP | ZapataBob West (L-12 13 14 15) | PluggedGas | 3,800 | Jul 22, 1994 | 1 | — |
| Dodd Leona Estate #242-249-00826 | Dolphin Petroleum LP | Jim WellsCaptain Lucey (3800) | PluggedGas | 4,440 | Dec 23, 1993 | 1 | Sep 2008 |
| Oconnor Mary Ellen #1442-391-01867 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (Stray A) | PluggedOil | 6,400 | Nov 3, 1992 | 3 | Jul 2016 |
| Oconnor Mary Ellen #4342-391-30586 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 6,400 | May 21, 1992 | 2 | Jul 2016 |
| O Conner Mary Ellen #4742-391-30597 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 6,408 | May 15, 1992 | 4 | Jul 2016 |
| El Oso Cattle Company #2042-391-30565 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 5,150 | Aug 30, 1988 | 2 | Aug 2016 |
| O Connor Mary Ellen #26 D42-391-04027 | Dolphin Petroleum LP | RefugioWildcat | PluggedOil | 6,100 | Aug 9, 1988 | 3 | Jul 2016 |
| Oconnor Mary Ellen #5342-391-31252 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (5000) | PluggedGas | 6,400 | Aug 8, 1988 | 3 | Jul 2016 |
| O Conner Mary Ellen #4042-391-30564 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FQ-30) | PluggedOil | 6,400 | Aug 5, 1988 | 1 | Jul 2016 |
| Oconnor Mary Ellen #1042-391-01848 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 5,600 | Dec 10, 1987 | 1 | Jul 2016 |
| Oconnor Mary Ellen #1942-391-01871 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 8,425 | Dec 10, 1987 | 1 | Jul 2016 |
| El Oso Cattle Co. #2742-391-31217 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FQ-30) | PluggedOil | 6,150 | Mar 26, 1987 | 3 | — |
| O Conner Mary Ellen #1 L42-391-01977 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 6,000 | Mar 11, 1987 | 1 | Jul 2016 |
| O Conner Mary Ellen #3042-391-30008 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 5,950 | Mar 11, 1987 | 2 | Jul 2016 |
| El Oso Cattle Company #2342-391-31162 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (5000) | PluggedOil | 5,150 | Mar 11, 1987 | 2 | — |
| O Conner Mary Ellen #4442-391-30585 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FQ-25) | PluggedOil | 6,413 | Mar 2, 1987 | 3 | Jul 2016 |
| Whatley #142-409-32164 | Dolphin Petroleum LP | San PatricioOdem (3425) | PluggedGas | 3,800 | Jan 13, 1987 | 1 | Jun 2001 |
| Oconnor Mary Ellen #3942-391-30563 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 6,400 | Dec 2, 1986 | 2 | Jul 2016 |
| El Oso Cattle Company #2842-391-31220 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (Stray A) | PluggedOil | 8,500 | Oct 30, 1986 | 4 | — |
| Oconnor Mary Ellen #3642-391-30576 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 6,100 | Oct 29, 1986 | 3 | Jul 2016 |
| O Conner Mary Ellen #5242-391-31249 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 9,500 | Oct 6, 1986 | 2 | Jul 2016 |
| El Oso Cattle Company #242-391-03682 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 6,214 | Sep 19, 1986 | 2 | Aug 2016 |
| El Oso Cattle Company #2142-391-30558 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 5,100 | Aug 8, 1986 | 3 | Aug 2016 |
| Dodd Leona #342-249-00849 | Dolphin Petroleum LP | Jim WellsCaptain Lucey (5150 Jose) | PluggedOil | 6,173 | Aug 2, 1985 | 1 | Apr 2008 |
| O Conner Mary Ellen #2842-391-04041 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 5,950 | May 29, 1985 | 2 | Jul 2016 |
| El Oso Cattle Co. #3042-391-31228 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (FQ-30) | Shut inOil | 6,150 | May 14, 1985 | 2 | — |
| Dodd Leona Estate #442-249-00850 | Dolphin Petroleum LP | Jim WellsCaptain Lucey (4100) | PluggedGas | 5,300 | Apr 9, 1985 | 1 | Mar 2008 |
| Oconnor Mary Ellen #4242-391-30587 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (Stray A) | PluggedOil | 6,400 | Nov 16, 1984 | 4 | Jul 2016 |
| Dodd Leona #542-249-00851 | Dolphin Petroleum LP | Jim WellsCaptain Lucey (5440) | PluggedGas | 5,654 | Jan 20, 1984 | 1 | Sep 2008 |
| Oconnor Mary Ellen #542-391-03680 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 5,600 | Nov 30, 1983 | 1 | Jul 2016 |
| Oconnor Mary Ellen #3742-391-30572 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (Stray A) | PluggedOil | 6,100 | Nov 30, 1983 | 2 | Jul 2016 |
| O Conner Mary Ellen #33 U42-391-30076 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (D-1) | PluggedOil | 5,950 | Nov 8, 1983 | 1 | Jul 2016 |
| Oconnor Mary Ellen #4142-391-30560 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (Stray A) | PluggedOil | 6,100 | Oct 27, 1983 | 3 | Jul 2016 |
| El Oso Cattle Company #1642-391-30521 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 4,300 | Dec 22, 1982 | 2 | — |
| Oconnor Mary Ellen #942-391-01847 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 5,600 | Dec 8, 1982 | 1 | Jul 2016 |
| Oconnor Mary Ellen #3142-391-30009 | Dolphin Petroleum LP | RefugioMary Ellen Oconnor (5000) | PluggedOil | 5,950 | Oct 27, 1982 | 2 | Jul 2016 |
| El Oso Cattle Company #542-391-03684 | Dolphin Petroleum LP | RefugioWoodsboro South (4200) | PluggedOil | 6,000 | Dec 17, 1981 | 1 | Aug 2016 |