| Katz (Strawn) Unit #158242-207-32657 | Atlas Operating LLC | Haskell, TXKatz (Strawn) | Shut inOil | 5,400 | Mar 31, 2011 | — | — |
| Katz (Strawn) Unit #15542-433-33655 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | ActiveOil | 5,380 | Mar 31, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #122W42-135-06180 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,262 | Mar 30, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #156W42-135-06280 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,480 | Mar 30, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #168RE42-135-06315 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,486 | Mar 30, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #273W42-135-06194 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Mar 28, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #107W42-135-06153 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,406 | Mar 25, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #19442-135-06304 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Mar 25, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #21642-135-06307 | Atlas Operating LLC | Ector, TXGoldsmith | ActiveOil | 4,379 | Mar 25, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #32742-135-33317 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Mar 25, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #25942-135-06207 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Mar 23, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #26142-135-06309 | Atlas Operating LLC | Ector, TXGoldsmith | ActiveOil | 4,402 | Mar 23, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #149R42-135-40872 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,516 | Mar 23, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #221R42-135-40873 | Atlas Operating LLC | Ector, TXGoldsmith | ActiveInjection | 4,515 | Mar 23, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #13842-135-06278 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,500 | Mar 21, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #207W42-135-06545 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Mar 21, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #10042-135-06177 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Mar 16, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #83R42-135-40864 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,500 | Mar 16, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #101R42-135-40865 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,528 | Mar 16, 2011 | — | — |
| Katz (Strawn) Unit #40142-433-33649 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | ActiveOil | 5,408 | Mar 16, 2011 | — | — |
| Katz (Strawn) Unit #41042-433-33650 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | ActiveInjection | 5,325 | Mar 16, 2011 | — | — |
| Shook Efs #301HHZ42-127-33923 | Atlas Operating LLC | Dimmit, TXBriscoe Ranch (Eagleford) | ActiveOil | 6,163 | Mar 11, 2011 | — | — |
| Katz (Strawn) Unit #300A42-433-33647 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | ActiveInjection | 5,311 | Mar 11, 2011 | — | — |
| Katz (Strawn) Unit #40242-433-33648 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | Shut inOil | 5,390 | Mar 11, 2011 | — | — |
| Katz (Strawn) Unit #19442-207-32648 | Atlas Operating LLC | Haskell, TXKatz (Strawn) | ActiveInjection | 5,526 | Feb 14, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #30942-135-31772 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Feb 7, 2011 | — | — |
| Katz (Strawn) Unit #15642-207-32647 | Atlas Operating LLC | Haskell, TXKatz (Strawn) | ActiveInjection | 5,350 | Feb 4, 2011 | — | — |
| Ellison Gas Unit #242-289-31867 | Atlas Operating LLC | Leon, TXBranton (Rodessa) | ActiveGas | 10,400 | Feb 4, 2011 | — | — |
| Surnson Gas Unit #142-419-31660 | Atlas Operating LLC | Shelby, TXTimpson (Travis Peak) | ActiveGas | 7,400 | Feb 4, 2011 | — | — |
| Alpha Ware #1HHZ42-507-32778 | Atlas Operating LLC | Zavala, TXBriscoe Ranch (Eagleford) | ActiveOil | 5,693 | Jan 31, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #26042-135-06312 | Atlas Operating LLC | Ector, TXGoldsmith | ActiveOil | 4,397 | Jan 28, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #221W42-135-08905 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Jan 28, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #9442-135-06151 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Jan 27, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #82W42-135-06219 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Jan 27, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #180W42-135-06277 | Atlas Operating LLC | Ector, TXGoldsmith | Shut inOil | 4,425 | Jan 27, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #9742-135-06407 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Jan 27, 2011 | — | — |
| Goldsmith-Landreth/San Andres/UT #9842-135-06408 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,500 | Jan 27, 2011 | — | — |
| Katz (Strawn) Unit #134A42-207-32646 | Atlas Operating LLC | Haskell, TXKatz (Strawn) | ActiveInjection | 5,358 | Jan 27, 2011 | — | — |
| Katz (Strawn) Unit #202242-269-32806 | Atlas Operating LLC | King, TXKatz (Strawn) | Shut inOil | 5,313 | Jan 13, 2011 | — | — |
| Betts Gas Unit #242-289-31922 | Atlas Operating LLC | Leon, TXBear Grass (Travis Peak) | ActiveGas | 10,550 | Jan 12, 2011 | — | — |
| Brazos Gas Unit #142-005-30389 | Atlas Operating LLC | Angelina, TXRaintree (Travis Peak Cons.) | ActiveGas | 12,347 | Jan 3, 2011 | — | — |
| Katz (Strawn) Unit #264A42-433-33639 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | PluggedOil | 5,500 | Jan 3, 2011 | — | — |
| Busy B Gas Unit #242-289-31916 | Atlas Operating LLC | Leon, TXBear Grass (Travis Peak) | ActiveGas | 10,500 | Dec 28, 2010 | — | — |
| Katz (Strawn) Unit #11042-269-32805 | Atlas Operating LLC | King, TXKatz (Strawn) | ActiveInjection | 5,387 | Dec 17, 2010 | — | — |
| Grass Farm Unit #1HHZ42-013-34329 | Atlas Operating LLC | Atascosa, TXBriscoe Ranch (Eagleford) | ActiveOil | 7,805 | Nov 30, 2010 | — | — |
| Katz (Strawn) Unit #272A42-433-33632 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | ActiveInjection | 5,318 | Nov 30, 2010 | — | — |
| Katz (Strawn) Unit #251A42-433-33630 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | ActiveOil | 5,315 | Nov 22, 2010 | — | — |
| Quitman Waterflood Unit #1 #2042-499-31909 | Atlas Operating LLC | Wood, TXQuitman (Sub-Clarksville) | ActiveOil | 5,031 | Nov 9, 2010 | — | — |
| Katz (Strawn) Unit #271A42-433-33627 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | ActiveOil | 5,302 | Nov 8, 2010 | — | — |
| Furlough Gas Unit #342-289-31904 | Atlas Operating LLC | Leon, TXBear Grass (Travis Peak) | ActiveGas | 10,500 | Nov 1, 2010 | — | — |