| 1625 State Com #16430-015-36275 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,482 | Apr 22, 2008 | 0 | 2,463 |
| 1625 State Com #29230-015-36188 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,690 | Mar 17, 2008 | 0 | 4,869 |
| 1724 Federal Com #11230-015-36072 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp, NE. Gas | ActiveGas | 8,858 | Jan 29, 2008 | 0 | 8,249 |
| 1625 State Com #16230-015-35852 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,585 | Oct 10, 2007 | 0 | 4,796 |
| Big Dog State Unit #16230-015-35775 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp(g) | ActiveGas | 8,289 | Aug 28, 2007 | 0 | 3,418 |
| 1625 State Com #20230-015-35643 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,607 | Jun 4, 2007 | 0 | 3,000 |
| 1724 Federal Com #151HHZ30-015-35665 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,706 | May 14, 2007 | 0 | 4,682 |
| 1724 Federal Com #29230-015-35497 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,710 | Mar 22, 2007 | 0 | 3,952 |
| 1625 State Com #09230-015-35414 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,607 | Feb 6, 2007 | 0 | 2,653 |
| 1724 State Com #02130-015-35411 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp, NE. Gas | ActiveGas | 8,623 | Feb 5, 2007 | 0 | 3,772 |
| 1625 State Com #16130-015-35412 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,604 | Feb 5, 2007 | 0 | 4,113 |
| Osbourn 1724 #10130-015-35362 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 9,016 | Jan 15, 2007 | 0 | 3,475 |
| 1724 Smith 14 #00130-015-35363 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,643 | Jan 15, 2007 | 0 | 2,990 |
| Collins Ranch State Unit #00430-015-35277 | Opal Operating Company LLC | EddyGopher; Wolfcamp (G) | ActiveGas | 8,498 | Dec 15, 2006 | 0 | 3,686 |
| Big Dog State Unit #20230-015-35278 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp(g) | ActiveGas | 8,199 | Dec 15, 2006 | 0 | 4,179 |
| Big Dog State Unit #20130-015-35279 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp(g) | ActiveGas | 8,123 | Dec 15, 2006 | 0 | 5,149 |
| 1823 Federal Com #181HZ30-015-35227 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp(g) | ActiveGas | 7,976 | Nov 3, 2006 | 0 | 3,275 |
| State 1823 #30130-015-34923 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp(g) | ActiveGas | 8,246 | Jun 12, 2006 | 0 | 4,403 |
| State 1823 #29130-015-34911 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp(g) | ActiveGas | 8,230 | Jun 7, 2006 | 0 | 3,723 |
| State Com 1625 #09130-015-34854 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,712 | May 12, 2006 | 0 | 2,948 |
| 1724 State Com #26130-015-34855 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,731 | May 12, 2006 | 0 | 3,125 |
| Collins Ranch Unit #31230-015-34856 | Opal Operating Company LLC | EddyGopher; Wolfcamp (G) | ActiveGas | 8,482 | May 12, 2006 | 0 | 3,855 |
| Nichols 1823 #02130-015-34857 | Opal Operating Company LLC | EddyGopher; Wolfcamp (G) | ActiveGas | 7,780 | May 12, 2006 | 0 | 2,790 |
| Delilah State Com #001H30-015-34794 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp, SW (G) | ActiveGas | 8,311 | Apr 19, 2006 | 0 | 973 |
| 1625 Federal Com #30130-015-34779 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,626 | Apr 12, 2006 | 0 | 3,376 |
| Jezebel State #001HHZ30-015-10222 | Opal Operating Company LLC | EddyFour Mile Draw; Wolfcamp, SW (G) | ActiveGas | 8,072 | Mar 6, 2006 | 0 | 858 |
| State 1724 #16130-015-34540 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,564 | Jan 10, 2006 | 0 | 4,264 |
| State 1625 #19130-015-34541 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,647 | Jan 10, 2006 | 0 | 2,975 |
| 1724 State Com #21130-015-34542 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,616 | Jan 10, 2006 | 0 | 3,024 |
| State 1724 #27130-015-34543 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,689 | Jan 10, 2006 | 0 | 6,166 |
| State 1624 #36130-015-34544 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,600 | Jan 10, 2006 | 0 | 7,909 |
| Sallee 1625 #14130-015-34530 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,816 | Jan 4, 2006 | 0 | 2,898 |
| 1625 Federal Com #32230-015-34443 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,774 | Nov 21, 2005 | 0 | 4,907 |
| 1625 Federal Com #21130-015-34445 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,651 | Nov 21, 2005 | 0 | 2,741 |
| State Com 1625 #20130-015-34365 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,452 | Sep 30, 2005 | 0 | 4,106 |
| Federal Com 1725 #06130-015-34340 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,618 | Sep 14, 2005 | 0 | 4,408 |
| 1625 Federal Com #311H30-015-34313 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,725 | Aug 24, 2005 | 0 | 7,713 |
| Kincaid 1724 #11130-015-34248 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveGas | 8,979 | Jul 29, 2005 | 0 | 23,894 |
| State Com 1625 #28130-015-34249 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,755 | Jul 29, 2005 | 0 | 10,203 |
| Werner 1625 #23130-015-34156 | Opal Operating Company LLC | EddyCottonwood Creek; WC, East (Gas) | ActiveGas | 8,808 | Jun 20, 2005 | 0 | 4,279 |
| State 1625 #22130-015-34155 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,838 | Jun 14, 2005 | 0 | 3,271 |
| Fed-Com 1625 #27130-015-34195 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveOil | 9,212 | May 3, 2005 | 0 | 4,149 |
| State 1625 #291HHZ30-015-33567 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 4,907 | Aug 20, 2004 | 0 | 596 |
| 1625 Federal Com #32130-015-33614 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,285 | Aug 6, 2004 | 0 | 2,107 |
| Thames 31 Federal #00130-015-33139 | Opal Operating Company LLC | EddyCottonwood Creek; Wolfcamp (Gas) | ActiveGas | 8,345 | Dec 10, 2003 | 0 | 8,721 |
| State 1724 #31130-015-33053 | Opal Operating Company LLC | EddyGopher; Wolfcamp (G) | ActiveGas | 4,565 | Oct 17, 2003 | 0 | 5,323 |
| State 1624 #29130-015-33055 | Opal Operating Company LLC | EddyEagle Creek; Wolfcamp Gas | ActiveGas | 7,305 | Oct 17, 2003 | 0 | 3,400 |
| 1724 Cass North Com #29130-015-20570 | Opal Operating Company LLC | EddyCollins Ranch; Wolfcamp (Gas) | ActiveOil | 8,435 | — | 0 | 4,776 |