| Shafter Lake Clearfork Unit #426W42-003-37603 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | PluggedOil | 7,000 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #42742-003-37604 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveInjection | 7,015 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #52542-003-37605 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | Shut inOil | 7,015 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #52642-003-37606 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveInjection | 7,036 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #527W42-003-37607 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | PluggedOil | 7,200 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #52842-003-37608 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveInjection | 7,019 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #625W42-003-37609 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveInjection | 7,015 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #62642-003-37610 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | Shut inOil | 7,028 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #62742-003-37611 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveInjection | 7,030 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #62842-003-37612 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveInjection | 7,030 | Feb 15, 1995 | — | — |
| Shafter Lake Clearfork Unit #10542-003-37613 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | Shut inOil | 7,001 | Feb 15, 1995 | — | — |
| Fairway /James Lime/ Unit #749342-001-32210 | Highmark Energy Operating LLC | Anderson, TXFairway (James Lime) | ActiveOil | 10,100 | Sep 16, 1994 | — | — |
| Fairway /James Lime/ Unit #747242-213-30742 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveOil | 10,150 | Mar 2, 1994 | — | — |
| Fairway /James Lime/ Unit #644542-213-30743 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | Shut inOil | 10,150 | Mar 2, 1994 | — | — |
| Fairway /James Lime/ Unit #643342-213-30744 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveOil | 10,175 | Mar 2, 1994 | — | — |
| Fairway /James Lime/ Unit #549642-213-30745 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | Shut inOil | 10,150 | Mar 2, 1994 | — | — |
| Fairway /James Lime/ Unit #447242-213-30747 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | PluggedOil | 10,500 | Mar 2, 1994 | — | — |
| Fairway /James Lime/ Unit #751242-001-32199 | Highmark Energy Operating LLC | Anderson, TXFairway (James Lime) | ActiveOil | 10,120 | Feb 14, 1994 | — | — |
| University San Andres Unit #3542-003-05461 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (San Andres) | ActiveOil | 9,945 | Nov 29, 1993 | — | — |
| University 141A 173 #1842-003-35628 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Devonian) | Shut inOil | 11,731 | Nov 16, 1993 | — | — |
| Cluck -D- #342-421-30554 | Highmark Energy Operating LLC | Sherman, TXCumberland (Morrow) | Temporarily abandonedGas | 6,900 | Sep 9, 1993 | — | — |
| University 173 #1942-003-37198 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveOil | 7,000 | Mar 2, 1993 | — | — |
| Shafter Lake Clearfork Unit #226W42-003-37199 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | ActiveInjection | 8,675 | Mar 1, 1993 | — | — |
| University -154- #2142-003-37200 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | PluggedOil | 7,400 | Feb 5, 1993 | — | — |
| University San Andres Unit #18W42-003-37201 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (San Andres) | PluggedOil | 5,000 | Feb 5, 1993 | — | — |
| University San Andres Unit #542-003-37202 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (San Andres) | Shut inOil | 4,775 | Feb 5, 1993 | — | — |
| Conroe Field Unit #102D42-339-01290 | Highmark Energy Operating LLC | Montgomery, TXConroe | ActiveInjection | 5,090 | Feb 4, 1993 | — | — |
| Fairway /James Lime/ Unit #748342-213-30711 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveOil | 10,133 | Dec 31, 1992 | — | — |
| Fairway /James Lime/ Unit #644442-213-30705 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveOil | 10,150 | Dec 7, 1992 | — | — |
| Fairway/James Lime/Unit #746342-213-30706 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | PluggedGas | 10,500 | Dec 7, 1992 | — | — |
| Fairway /James Lime/ Unit #649342-213-30707 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveOil | 10,125 | Dec 7, 1992 | — | — |
| Fairway /James Lime/ Unit #647342-213-30708 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | Shut inOil | 10,100 | Dec 7, 1992 | — | — |
| Fairway /James Lime/ Unit #651342-213-30709 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveInjection | 10,125 | Dec 7, 1992 | — | — |
| Conroe Field Unit #1004A42-339-00584 | Highmark Energy Operating LLC | Montgomery, TXConroe | Shut inOil | 5,178 | Aug 13, 1992 | — | — |
| Moore H. N. #6642-339-30691 | Highmark Energy Operating LLC | Montgomery, TXConroe (Middle Wilcox Cons.) | Temporarily abandonedGas | 9,696 | Aug 4, 1992 | — | — |
| Minor A. Gas Unit #242-401-32398 | Highmark Energy Operating LLC | Rusk, TXOak Hill (Cotton Valley) | PluggedGas | 11,100 | Jul 13, 1992 | — | — |
| Fairway /James Lime/ Unit #548342-213-30697 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | Shut inOil | 10,175 | Jun 9, 1992 | — | — |
| Fairway /James Lime/ Unit #646342-213-30695 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | Shut inOil | 10,175 | May 21, 1992 | — | — |
| Fairway /James Lime/ Unit #651242-213-30696 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveOil | 10,150 | May 21, 1992 | — | — |
| Fairway /James Lime/ Unit #650342-213-30692 | Highmark Energy Operating LLC | Henderson, TXFairway (James Lime) | ActiveOil | 10,150 | Apr 29, 1992 | — | — |
| Conroe Field Unit #194842-339-30743 | Highmark Energy Operating LLC | Montgomery, TXConroe | ActiveOil | 5,288 | Jul 11, 1991 | — | — |
| Bitler-Lowe Clearfork Unit #9A42-003-36934 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,200 | May 24, 1991 | — | — |
| Bitler-Lowe Clearfork Unit #b 1242-003-36935 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,200 | May 24, 1991 | — | — |
| Bitler-Lowe Clearfork Unit #8A42-003-36936 | Highmark Energy Operating LLC | Andrews, TXFullerton | ActiveOil | 7,200 | May 24, 1991 | — | — |
| Bitler-Lowe Clearfork Unit #13C42-003-36937 | Highmark Energy Operating LLC | Andrews, TXFullerton | ActiveOil | 7,200 | May 24, 1991 | — | — |
| Bitler-Lowe Clearfork Unit #14 C42-003-36938 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,215 | May 24, 1991 | — | — |
| Parker Harry #142-295-00109 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Morrow) | ActiveGas | 10,165 | Apr 10, 1991 | — | — |
| Conroe Field Unit #2709A42-339-30094 | Highmark Energy Operating LLC | Montgomery, TXConroe | Temporarily abandonedGas | 12,331 | Feb 1, 1991 | — | — |
| Bitler-Lowe Clearfork Unit #12C42-003-36863 | Highmark Energy Operating LLC | Andrews, TXFullerton | ActiveOil | 7,160 | Dec 13, 1990 | — | — |
| Bitler-Lowe Clearfork Unit #11C42-003-36864 | Highmark Energy Operating LLC | Andrews, TXFullerton | ActiveOil | 7,250 | Dec 13, 1990 | — | — |