| Simmons 3 #742-435-38460 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,002 | Apr 18, 2007 | — | — |
| Simmons 3 #642-435-38461 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,000 | Apr 18, 2007 | — | — |
| Mayer Edwin S. Jr. S #842-435-38462 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,250 | Apr 18, 2007 | — | — |
| Friend 25 #142-105-40287 | Upp Operating LLC | Crockett, TXSawyer (Canyon) | ActiveGas | 9,400 | Apr 17, 2007 | — | — |
| City of Godley Unit #2 HHZ42-251-31693 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,634 | Apr 17, 2007 | — | — |
| Fowler #642-251-31696 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 8,362 | Apr 17, 2007 | — | — |
| Youngblood #2HHZ42-251-31697 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,153 | Apr 17, 2007 | — | — |
| King #12HHZ42-251-31687 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,387 | Apr 16, 2007 | — | — |
| Jeffers 28A #442-413-32454 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,452 | Apr 16, 2007 | — | — |
| Canyon Ranch 113 #10S42-435-38382 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,719 | Apr 16, 2007 | — | — |
| Mayer Ranch 35 #542-435-38439 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,250 | Apr 16, 2007 | — | — |
| Mayer Ranch 35 #342-435-38440 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,500 | Apr 16, 2007 | — | — |
| Mayer Ranch 35 #442-435-38441 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,400 | Apr 16, 2007 | — | — |
| Sawyer-Jones 190 #1042-435-38446 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,000 | Apr 16, 2007 | — | — |
| Mayer Edwin S. Jr. #2942-435-38437 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 7,592 | Apr 14, 2007 | — | — |
| Mayer Ranch D #642-435-38445 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,021 | Apr 14, 2007 | — | — |
| Canyon Ranch #9216S42-435-38420 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,917 | Apr 11, 2007 | — | — |
| Shurley RR 4D #442-435-38423 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,103 | Apr 11, 2007 | — | — |
| Bell J. C. Estate #5HHZ42-251-31655 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,815 | Apr 10, 2007 | — | — |
| Bell J. C. Estate #4HHZ42-251-31656 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,835 | Apr 10, 2007 | — | — |
| Bell J. C. Estate #6HHZ42-251-31657 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,931 | Apr 10, 2007 | — | — |
| Canyon Ranch #914S42-435-38425 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 7,013 | Apr 10, 2007 | — | — |
| Shurley RR 4D #342-435-38426 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,243 | Apr 10, 2007 | — | — |
| Hicks 23 #1642-435-38414 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,716 | Apr 6, 2007 | — | — |
| Mayer Minnie H. D #30542-435-38406 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,235 | Apr 5, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. D #742-435-38408 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,150 | Apr 5, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. V #642-435-38409 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,258 | Apr 5, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. V #742-435-38410 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,260 | Apr 5, 2007 | — | — |
| Hicks 23 #1542-435-38415 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,800 | Apr 5, 2007 | — | — |
| Canyon Ranch #1068X42-435-38417 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,903 | Apr 5, 2007 | — | — |
| Canyon Ranch #839X42-435-38418 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,865 | Apr 5, 2007 | — | — |
| Canyon Ranch #9217S42-435-38419 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,888 | Apr 5, 2007 | — | — |
| Mayer 15 #1942-435-38402 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,210 | Apr 3, 2007 | — | — |
| Mayer 15 #2142-435-38403 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,529 | Apr 3, 2007 | — | — |
| Mayer 15 #2042-435-38404 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,285 | Apr 3, 2007 | — | — |
| Canyon Ranch #918S42-435-38412 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,008 | Apr 3, 2007 | — | — |
| Canyon Ranch #917S42-435-38413 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,994 | Apr 3, 2007 | — | — |
| King #6 HHZ42-251-31646 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,331 | Apr 2, 2007 | — | — |
| Fowler #5 HHZ42-251-31651 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,833 | Apr 2, 2007 | — | — |
| Mayer Minnie H. KK 34 #342-435-38400 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,251 | Apr 2, 2007 | — | — |
| Mayer Minnie H. D. 38 #342-435-38401 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,250 | Apr 2, 2007 | — | — |
| Mayer Minnie H. D. 38 #442-435-38405 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,200 | Apr 2, 2007 | — | — |
| Stewart #3HHZ42-251-31640 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,613 | Mar 30, 2007 | — | — |
| Ezell #4HHZ42-251-31644 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,710 | Mar 30, 2007 | — | — |
| Deberry-Boyette Unit #1342-435-38399 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,631 | Mar 30, 2007 | — | — |
| Deberry a #9742-435-38391 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,700 | Mar 29, 2007 | — | — |
| Deberry a #9642-435-38392 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,694 | Mar 29, 2007 | — | — |
| Deberry a #9442-435-38393 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,724 | Mar 29, 2007 | — | — |
| Deberry a #9542-435-38394 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,753 | Mar 29, 2007 | — | — |
| Deberry a #9842-435-38395 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,576 | Mar 29, 2007 | — | — |