| 620866 | Jun 15, 2006 | Jun 15, 2006 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1010 | 3,999 | 13539125 |
| 620865 | Jun 15, 2006 | Jun 15, 2006 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1119W | 3,999 | 13539124 |
| 620865Amendment | Jun 15, 2006 | Jun 15, 2006 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1119W | 3,999 | 13539124 |
| 620852 | Jun 15, 2006 | Jun 15, 2006 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1118 | 3,999 | 13539123 |
| 620852Amendment | Jun 15, 2006 | Jun 15, 2006 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1118 | 3,999 | 13539123 |
| 619855 | Jun 9, 2006 | Jun 9, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6930 | 3,500 | 33534617 |
| 619652 | Jun 7, 2006 | Jun 7, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #7029 | 3,500 | 33534614 |
| 619972 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #2804 | 3,500 | 33534626 |
| 619970 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #2908 | 3,500 | 33534625 |
| 619967 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #3020 | 3,500 | 33534624 |
| 619966 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #3714 | 3,500 | 33534623 |
| 619964 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #5313 | 3,500 | 33534622 |
| 619870 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #5410 | 3,500 | 33534621 |
| 619864 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6315 | 3,500 | 33534620 |
| 619861 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6538 | 3,500 | 33534618 |
| 619859 | Jun 1, 2006 | Jun 1, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6833 | 3,500 | 33534619 |
| 619651 | May 26, 2006 | May 26, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #7028 | 3,500 | 33534615 |
| 619648 | May 26, 2006 | May 26, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6216 | 3,500 | 33534613 |
| 619647 | May 26, 2006 | May 26, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #5009 | 3,500 | 33534612 |
| 619643 | May 26, 2006 | May 26, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #2128 | 3,500 | 33534610 |
| 619639 | May 26, 2006 | May 26, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #2505 | 3,500 | 33534611 |
| 619638 | May 26, 2006 | May 26, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #3713 | 3,500 | 33534609 |
| 616837 | Apr 6, 2006 | Apr 6, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #3512 | 3,500 | 33534584 |
| 616833 | Apr 6, 2006 | Apr 6, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #5008 | 3,500 | 33534583 |
| 616830 | Apr 6, 2006 | Apr 6, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6107 | 3,500 | 33534582 |
| 616827 | Apr 6, 2006 | Apr 6, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6215 | 3,500 | 33534581 |
| 616826 | Apr 4, 2006 | Apr 4, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6008 | 3,500 | 33534580 |
| 616748 | Apr 4, 2006 | Apr 4, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #5906 | 3,500 | 33534579 |
| 616747 | Apr 4, 2006 | Apr 4, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6214 | 3,500 | 33534577 |
| 616745 | Apr 4, 2006 | Apr 4, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #7027 | 3,500 | 33534578 |
| 616740 | Apr 4, 2006 | Apr 4, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6929 | 3,500 | 33534576 |
| 616739 | Apr 4, 2006 | Apr 4, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6832 | 3,500 | 33534575 |
| 616625 | Apr 3, 2006 | Apr 3, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #5109 | 3,500 | 33534570 |
| 616643 | Mar 31, 2006 | Mar 31, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6831 | 3,500 | 33534574 |
| 616638 | Mar 31, 2006 | Mar 31, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6830 | 3,500 | 33534573 |
| 616632 | Mar 31, 2006 | Mar 31, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #5312 | 3,500 | 33534572 |
| 616630 | Mar 31, 2006 | Mar 31, 2006 | Energen Resources Corporation | Mitchell | North Westbrook Unit #6829 | 3,500 | 33534571 |
| 614989 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #1516W | 7,500 | 16536527 |
| 614986 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2242W | 7,500 | 16536526 |
| 614985 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2240W | 7,500 | 16536525 |
| 614983 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2239W | 7,500 | 16536524 |
| 614982 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2243 | 7,500 | 16536523 |
| 614979 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2810W | 7,500 | 16536522 |
| 614974 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2711W | 7,500 | 16536521 |
| 614973 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #3111W | 7,500 | 16536528 |
| 614972 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #3114W | 7,500 | 16536520 |
| 614970 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #3113W | 7,500 | 16536519 |
| 614969 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #3112W | 7,500 | 16536518 |
| 614968 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #3329W | 7,500 | 16536517 |
| 614967 | Mar 3, 2006 | Mar 3, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #1304 | 7,500 | 16536516 |
| 614801 | Mar 2, 2006 | Mar 2, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #508 | 7,500 | 16536512 |
| 614815 | Mar 1, 2006 | Mar 1, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2241 | 7,500 | 16536513 |
| 614813 | Mar 1, 2006 | Mar 1, 2006 | Energen Resources Corporation | Gaines | North Roberston Unit #912W | 7,500 | 16536509 |
| 614800 | Mar 1, 2006 | Mar 1, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #3328 | 7,500 | 16536511 |
| 614796 | Mar 1, 2006 | Mar 1, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #2238 | 7,500 | 16536510 |
| 566000 | Mar 1, 2006 | Mar 1, 2006 | Energen Resources Corporation | Gaines | North Robertson Unit #1410 | 7,500 | 16536515 |
| 612695 | Jan 23, 2006 | Jan 23, 2006 | Energen Resources Corporation | Gaines | Rudd "A" #1 | 7,500 | 16536479 |
| 612695Amendment | Jan 23, 2006 | Jan 23, 2006 | Energen Resources Corporation | Gaines | Rudd "A" #1 | 7,500 | 16536479 |
| 612693 | Jan 23, 2006 | Jan 23, 2006 | Energen Resources Corporation | Gaines | Rudd #9 | 7,500 | 16536480 |
| 611799 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #1867W | 3,500 | 33534567 |
| 611798 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #1866W | 3,500 | 33534566 |
| 611797 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #1865W | 3,500 | 33534565 |
| 611796 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #1730W | 3,500 | 33534564 |
| 611787 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #884W | 3,500 | 33534563 |
| 611786 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #737W | 3,500 | 33534562 |
| 611785 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #222W | 3,500 | 33534561 |
| 611784 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #883 | 3,500 | 33534560 |
| 611783 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #738 | 3,500 | 33534559 |
| 611734 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #635 | 3,500 | 33534558 |
| 611733 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #550 | 3,500 | 33534557 |
| 611732 | Jan 5, 2006 | Jan 5, 2006 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #549 | 3,500 | 33534556 |
| 611531 | Dec 29, 2005 | Dec 29, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #548 | 3,500 | 33534555 |
| 611528 | Dec 29, 2005 | Dec 29, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #371 | 3,500 | 33534554 |
| 611405 | Dec 28, 2005 | Dec 28, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #370 | 3,500 | 33534553 |
| 611403 | Dec 28, 2005 | Dec 28, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #369 | 3,500 | 33534552 |
| 611344 | Dec 28, 2005 | Dec 28, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #368 | 3,500 | 33534550 |
| 611335 | Dec 28, 2005 | Dec 28, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #223 | 3,500 | 33534551 |
| 611319 | Dec 28, 2005 | Dec 28, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #221 | 3,500 | 33534549 |
| 610458 | Dec 7, 2005 | Dec 7, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1904 | 3,710 | 13508369 |
| 607141 | Sep 30, 2005 | Sep 30, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #1864W | 3,500 | 33534527 |
| 606440 | Sep 16, 2005 | Sep 16, 2005 | Energen Resources Corporation | Pecos | Fort Stockton Unit #1319 | 3,600 | 37133254 |
| 606420 | Sep 16, 2005 | Sep 16, 2005 | Energen Resources Corporation | Mitchell | Westbrook Southeast Unit #1728W | 3,500 | 33534473 |
| 606294 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1418 | 4,500 | 13538948 |
| 606292 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1815 | 4,500 | 13538946 |
| 606291 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1509W | 4,500 | 13538947 |
| 606290 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1510W | 4,500 | 13538945 |
| 606212 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #211 | 4,500 | 13538943 |
| 606211 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1009 | 4,500 | 13538942 |
| 606209 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #329 | 4,500 | 13538941 |
| 606206 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1219 | 4,500 | 13538940 |
| 606203 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1220 | 4,500 | 13538939 |
| 606197 | Sep 14, 2005 | Sep 14, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #1417 | 4,500 | 13538938 |
| 603728 | Jul 21, 2005 | Jul 21, 2005 | Energen Resources Corporation | Gaines | Katie Bell Holt 'A' #3 | 4,750 | 16530634 |
| 603237 | Jul 12, 2005 | Jul 12, 2005 | Energen Resources Corporation | Ector | East Penwell San Andres Unit #402W | 3,960 | 13507908 |
| 560865 | Apr 21, 2005 | Apr 21, 2005 | Energen Resources Corporation | Gaines | Rudd #7 | 7,500 | 16536367 |
| 560864 | Apr 21, 2005 | Apr 21, 2005 | Energen Resources Corporation | Gaines | Rudd #8 | 7,500 | 16536368 |
| 559312 | Apr 4, 2005 | Apr 4, 2005 | Energen Resources Corporation | Gaines | North Robertson Unit #3035 W | 7,500 | 16536361 |
| 559311 | Mar 24, 2005 | Mar 24, 2005 | Energen Resources Corporation | Gaines | North Robertson Unit #3034 W | 7,500 | 16536359 |
| 559310 | Mar 24, 2005 | Mar 24, 2005 | Energen Resources Corporation | Gaines | North Robertson Unit #3033 W | 7,500 | 16536360 |
| 559309 | Mar 24, 2005 | Mar 24, 2005 | Energen Resources Corporation | Gaines | North Robertson Unit #3032 W | 7,500 | 16536358 |