| Doyle Robert B #6143HHZ42-295-34216 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveGas | 7,980 | Nov 10, 2014 | — | — |
| Doyle Robert B #6144HHZ42-295-34217 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveGas | 7,977 | Nov 10, 2014 | — | — |
| Doyle Robert B #6141HHZ42-295-34214 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveGas | 7,867 | Oct 24, 2014 | — | — |
| University 153 #7 L42-003-05365 | Highmark Energy Operating LLC | Andrews, TXShafter Lake (Clear Fork) | PluggedOil | 6,775 | Sep 16, 2014 | — | — |
| Deep Rock Etal -a- #11G42-003-46169 | Highmark Energy Operating LLC | Andrews, TXDeep Rock (Glorieta 5950) | ActiveInjection | 6,235 | May 5, 2014 | — | — |
| Deep Rock Etal -a- #12G42-003-46170 | Highmark Energy Operating LLC | Andrews, TXDeep Rock (Glorieta 5950) | ActiveInjection | 6,151 | May 5, 2014 | — | — |
| Lowe M. R. 6 #342-003-46073 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,450 | Mar 27, 2014 | — | — |
| Bitler-Lowe -B- #1342-003-46074 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,600 | Mar 27, 2014 | — | — |
| Conroe Field Unit #152942-339-31119 | Highmark Energy Operating LLC | Montgomery, TXConroe | ActiveOil | 5,442 | Nov 13, 2013 | — | — |
| Prentice Northeast Unit #78R42-445-10242 | Highmark Energy Operating LLC | Terry, TXPrentice (6700) | ActiveOil | 7,053 | Jul 29, 2013 | — | — |
| Conroe Field Unit #417042-339-31114 | Highmark Energy Operating LLC | Montgomery, TXConroe | ActiveInjection | 5,460 | Jul 26, 2013 | — | — |
| Conroe Field Unit #163642-339-31116 | Highmark Energy Operating LLC | Montgomery, TXConroe | ActiveInjection | 5,373 | Jul 26, 2013 | — | — |
| Conroe Field Unit #152842-339-31117 | Highmark Energy Operating LLC | Montgomery, TXConroe | ActiveInjection | 5,478 | Jul 26, 2013 | — | — |
| Santa FE 1002 #4HHZ42-357-33245 | Highmark Energy Operating LLC | Ochiltree, TXAllen-Parker (Marmaton) | ActiveOil | 7,231 | May 14, 2013 | — | — |
| Lockhart 1001 #1HHZ42-357-33246 | Highmark Energy Operating LLC | Ochiltree, TXAllen-Parker (Marmaton) | ActiveOil | 7,366 | May 14, 2013 | — | — |
| Blais 1001 #1HHZ42-357-33247 | Highmark Energy Operating LLC | Ochiltree, TXAllen-Parker (Marmaton) | ActiveOil | 7,371 | May 14, 2013 | — | — |
| Prentice Northeast Unit #190442-445-32369 | Highmark Energy Operating LLC | Terry, TXPrentice (6700) | ActiveOil | 7,370 | Apr 12, 2013 | — | — |
| Wallville 321 #3HHZ42-357-33219 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,573 | Mar 7, 2013 | — | — |
| Rogers 320 #2HHZ42-357-33213 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,598 | Feb 22, 2013 | — | — |
| Rogers 320 #3HHZ42-357-33198 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,641 | Jan 14, 2013 | — | — |
| Santa FE 1002 #3HHZ42-357-33185 | Highmark Energy Operating LLC | Ochiltree, TXAllen-Parker (Marmaton) | ActiveOil | 7,203 | Nov 28, 2012 | — | — |
| Wallville 321 #2HHZ42-357-33181 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,695 | Nov 5, 2012 | — | — |
| Prentice Northeast Unit #8742-445-00334 | Highmark Energy Operating LLC | Terry, TXPrentice (6700) | PluggedOil | 6,750 | Oct 12, 2012 | — | — |
| Conroe Field Unit #212342-339-31109 | Highmark Energy Operating LLC | Montgomery, TXConroe | ActiveInjection | 5,458 | Sep 18, 2012 | — | — |
| Rogers 386 #3HHZ42-357-33165 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,417 | Sep 13, 2012 | — | — |
| Rogers 386 #2HHZ42-357-33166 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,507 | Sep 13, 2012 | — | — |
| Trosper 362 #3HHZ42-295-33893 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveOil | 8,183 | Jul 30, 2012 | — | — |
| Bitler-Lowe -B- #2242-003-44588 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,295 | Jul 23, 2012 | — | — |
| Tyson 447 #5HHZ42-295-33876 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveOil | 8,186 | Jun 8, 2012 | — | — |
| Pearson 113 #3HHZ42-357-33114 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | PluggedOil | 9,000 | May 8, 2012 | — | — |
| Bitler-Lowe Clearfork Unit #2542-003-44281 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,299 | May 4, 2012 | — | — |
| Bitler-Lowe Clearfork Unit #2642-003-44283 | Highmark Energy Operating LLC | Andrews, TXFullerton | Shut inOil | 7,299 | May 4, 2012 | — | — |
| Bitler-Lowe Clearfork Unit #2742-003-44284 | Highmark Energy Operating LLC | Andrews, TXFullerton | ActiveOil | 7,292 | May 4, 2012 | — | — |
| Pearson 113 #2HHZ42-357-33112 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,334 | May 3, 2012 | — | — |
| Bitler-Lowe Clearfork Unit #2842-003-44254 | Highmark Energy Operating LLC | Andrews, TXFullerton | ActiveOil | 7,291 | May 1, 2012 | — | — |
| Glass 134 #3HHZ42-357-33109 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,463 | Apr 23, 2012 | — | — |
| Cook 130 #1HHZ42-357-33107 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,510 | Apr 19, 2012 | — | — |
| Rader 251 #4HHZ42-295-33841 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | Shut inOil | 8,467 | Apr 13, 2012 | — | — |
| Rader 251 #2HHZ42-295-33842 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveOil | 8,454 | Apr 13, 2012 | — | — |
| Doyle J.B. #11HHZ42-295-33839 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveGas | 7,790 | Apr 3, 2012 | — | — |
| Rader 251 #3HHZ42-295-33837 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveOil | 8,460 | Mar 29, 2012 | — | — |
| Price Willis D. #25HHZ42-295-33799 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveGas | 7,764 | Jan 23, 2012 | — | — |
| Tyson 447 #4HHZ42-295-33800 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveOil | 8,180 | Jan 4, 2012 | — | — |
| Trosper 362 #2HHZ42-295-33791 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveOil | 8,179 | Dec 9, 2011 | — | — |
| Prentice Northeast Unit #52742-445-32312 | Highmark Energy Operating LLC | Terry, TXPrentice (6700) | Shut inOil | 7,290 | Nov 1, 2011 | — | — |
| Waters Ranch 330 #2HHZ42-295-33778 | Highmark Energy Operating LLC | Lipscomb, TXLipscomb (Cleveland) | ActiveOil | 8,091 | Oct 28, 2011 | — | — |
| Rogers 385 #2HHZ42-357-33049 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,585 | Oct 24, 2011 | — | — |
| Rogers 385 #3HHZ42-357-33050 | Highmark Energy Operating LLC | Ochiltree, TXPan Petro (Cleveland) | ActiveOil | 7,578 | Oct 24, 2011 | — | — |
| Prentice Northeast Unit #58142-445-32313 | Highmark Energy Operating LLC | Terry, TXPrentice (6700) | ActiveOil | 7,320 | Oct 14, 2011 | — | — |
| Conroe Field Unit #162042-339-01555 | Highmark Energy Operating LLC | Montgomery, TXConroe | PluggedOil | 5,160 | Oct 12, 2011 | — | — |