| 674238 | Nov 6, 2008 | Nov 6, 2008 | Mariner Energy, Inc. | Keathley 46 #1 | 10,400 | 17334053 |
| 674229 | Nov 6, 2008 | Nov 6, 2008 | Mariner Energy, Inc. | Glass 3 #1 | 10,400 | 17333461 |
| 674226 | Nov 6, 2008 | Nov 6, 2008 | Mariner Energy, Inc. | Schwartz 36 #1 | 10,400 | 17333460 |
| 673339 | Nov 6, 2008 | Nov 6, 2008 | Pioneer Natural Res. USA, Inc. | Spraberry Driver Unit #925A | 8,700 | 17333455 |
| 673780 | Oct 30, 2008 | Oct 30, 2008 | Piedra Operating, LLC | Zant #202 | 11,500 | 17332404 |
| 673778 | Oct 30, 2008 | Oct 30, 2008 | Piedra Operating, LLC | Zant "37" #3701 | 10,500 | 17331814 |
| 673696 | Oct 25, 2008 | Oct 25, 2008 | Special Energy Corporation | Dollie-Neal #2101 | 10,000 | 17333459 |
| 673436 | Oct 23, 2008 | Oct 23, 2008 | Pioneer Natural Res. USA, Inc. | Wood Family 28A #1 | 11,000 | 17333458 |
| 673415 | Oct 23, 2008 | Oct 23, 2008 | Chevron U. S. A. Inc. | Sterling "W" Fee #2 | 8,500 | 17332338 |
| 673418 | Oct 22, 2008 | Oct 22, 2008 | Special Energy Corporation | Thunderbolt #1001 | 10,000 | 17333457 |
| 673413 | Oct 22, 2008 | Oct 22, 2008 | Special Energy Corporation | Connie-Neal #2801 | 10,000 | 17333456 |
| 673413Amendment | Oct 22, 2008 | Oct 22, 2008 | Mariner Energy, Inc. | Lynda #2801 | 11,000 | 17333456 |
| 673310 | Oct 21, 2008 | Oct 21, 2008 | Pioneer Natural Res. USA, Inc. | Houston Ranch "13" #1 | 10,800 | 17333454 |
| 673178 | Oct 20, 2008 | Oct 20, 2008 | Laredo Petroleum, Inc. | Underwood 9 #1HH | 9,600 | 17333452 |
| 673177 | Oct 20, 2008 | Oct 20, 2008 | Laredo Petroleum, Inc. | Hardy 15 #1HH | 9,600 | 17333451 |
| 671976 | Oct 13, 2008 | Oct 13, 2008 | Piedra Operating, LLC | Zant #4701 | 10,500 | 17331781 |
| 672227 | Oct 9, 2008 | Oct 9, 2008 | Mariner Energy, Inc. | Riley #4701 | 10,300 | 17333450 |
| 672024 | Oct 7, 2008 | Oct 7, 2008 | Thompson, J. Cleo | Herzog #2 | 10,000 | 17333449 |
| 672024Amendment | Oct 7, 2008 | Oct 7, 2008 | Thompson, J. Cleo | Herzog #2 | 11,000 | 17333449 |
| 671861 | Oct 6, 2008 | Oct 6, 2008 | Trilogy Operating, Inc. | TCG #1 | 12,000 | 17333448 |
| 671805 | Oct 4, 2008 | Oct 4, 2008 | Pioneer Natural Res. USA, Inc. | Corson "A" #1 | 10,600 | 17333447 |
| 671804 | Oct 4, 2008 | Oct 4, 2008 | Pioneer Natural Res. USA, Inc. | Lloyd "23" #1 | 10,700 | 17333446 |
| 671504 | Oct 4, 2008 | Oct 4, 2008 | Pioneer Natural Res. USA, Inc. | Cole "B" #1 | 10,500 | 17333445 |
| 671460 | Oct 4, 2008 | Oct 4, 2008 | Endeavor Energy Resources L.P. | Norma Jean #3 | 12,000 | 17333444 |
| 671108 | Sep 30, 2008 | Sep 30, 2008 | Orbit Crude, Inc. | Glass #2 | 10,500 | 17333443 |
| 670872 | Sep 26, 2008 | Sep 26, 2008 | Mariner Energy, Inc. | Riley #3701 | 10,300 | 17333442 |
| 670812 | Sep 25, 2008 | Sep 25, 2008 | Pioneer Natural Res. USA, Inc. | Mills "37B" #1 | 10,800 | 17333441 |
| 670460 | Sep 22, 2008 | Sep 22, 2008 | Page Operating, LLC | Hoelscher #1 | 10,500 | 17333440 |
| 670304 | Sep 18, 2008 | Sep 18, 2008 | Pioneer Natural Res. USA, Inc. | Cole "A" #2 | 10,500 | 17333438 |
| 670195 | Sep 17, 2008 | Sep 17, 2008 | Williams, Clayton Energy, Inc. | Foster #140 | 10,500 | 17333437 |
| 669962 | Sep 16, 2008 | Sep 16, 2008 | Pioneer Natural Res. USA, Inc. | Corson "B5" #1 | 10,700 | 17333435 |
| 669962Amendment | Sep 16, 2008 | Sep 16, 2008 | Pioneer Natural Res. USA, Inc. | Corson "B5" #2 | 10,800 | 17333435 |
| 669958 | Sep 15, 2008 | Sep 15, 2008 | Pioneer Natural Res. USA, Inc. | Fowler "B" #4 | 10,700 | 17333434 |
| 669955 | Sep 15, 2008 | Sep 15, 2008 | Pioneer Natural Res. USA, Inc. | Hancock 'A' #2 | 10,700 | 17333882 |
| 669951 | Sep 15, 2008 | Sep 15, 2008 | Pioneer Natural Res. USA, Inc. | Cheatham "19" #3 | 10,700 | 17333433 |
| 669747 | Sep 12, 2008 | Sep 12, 2008 | Special Energy Corporation | Schafer "4" #1 | 10,000 | 17333432 |
| 667466Amendment | Sep 9, 2008 | Sep 9, 2008 | Mariner Energy, Inc. | Duff 7 #1 | 10,300 | 17333807 |
| 667465Amendment | Sep 9, 2008 | Sep 9, 2008 | Mariner Energy, Inc. | Hartley 38 #1 | 10,300 | 17333424 |
| 669165 | Sep 5, 2008 | Sep 5, 2008 | Kaiser-Francis Oil Company | Calverley #3204 | 8,200 | 17333431 |
| 668746 | Sep 2, 2008 | Sep 2, 2008 | Pioneer Natural Res. USA, Inc. | Cook, E "A" #4 | 10,500 | 17333430 |
| 668566 | Aug 27, 2008 | Aug 27, 2008 | Pioneer Natural Res. USA, Inc. | Cook, E "17" #2 | 10,500 | 17333429 |
| 668361 | Aug 22, 2008 | Aug 22, 2008 | Endeavor Energy Resources L.P. | Patterson "44" #5 | 12,000 | 17333428 |
| 668353 | Aug 22, 2008 | Aug 22, 2008 | McClure Oil Company, Inc. | Glass "46" #4 | 7,200 | 17333427 |
| 667466 | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Duff 7 #1 | 10,300 | 17333807 |
| 667465 | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Hartley 38 #1 | 10,300 | 17333424 |
| 667463 | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Riley 48 #1 | 10,300 | 17333425 |
| 667463Amendment | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Riley 48 #1 | 10,300 | 17333425 |
| 667461 | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Newell 12 #1 | 10,300 | 17333423 |
| 667461Amendment | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Newell 12 #1 | 10,300 | 17333423 |
| 667268 | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Fuller 43 #1 | 10,300 | 17333422 |
| 667268Amendment | Aug 9, 2008 | Aug 9, 2008 | Mariner Energy, Inc. | Fuller 43 #1 | 10,300 | 17333422 |
| 666616 | Aug 2, 2008 | Aug 2, 2008 | Range Production Company | Edmondson #6 | 9,000 | 17333420 |
| 666616Amendment | Aug 2, 2008 | Aug 2, 2008 | Range Production Company | Edmondson #6 | 9,330 | 17333420 |
| 666617 | Aug 1, 2008 | Aug 1, 2008 | Range Production Company | Edmondson A #3130 | 9,330 | 17333421 |
| 660493Amendment | Jul 29, 2008 | Jul 29, 2008 | Pioneer Natural Res. USA, Inc. | Weyman "22-B" #2 | 11,000 | 17333395 |
| 666182 | Jul 25, 2008 | Jul 25, 2008 | Special Energy Corporation | Hill #1 | 10,000 | 17333419 |
| 666148 | Jul 25, 2008 | Jul 25, 2008 | Merit Energy Company | Calverley A #6 | 10,500 | 17333418 |
| 665265 | Jul 25, 2008 | Jul 25, 2008 | Henry Petroleum LP | Currie #3512 | 10,800 | 17333413 |
| 666046 | Jul 24, 2008 | Jul 24, 2008 | Pioneer Natural Res. USA, Inc. | McDaniel "33A" #1 | 10,500 | 17333416 |
| 666046Amendment | Jul 24, 2008 | Jul 24, 2008 | Pioneer Natural Res. USA, Inc. | McDaniel "33A" #1 | 10,500 | 17333416 |
| 665974 | Jul 23, 2008 | Jul 23, 2008 | Page Operating, LLC | Fowler "22" #1 | 10,500 | 17333415 |
| 665974Amendment | Jul 23, 2008 | Jul 23, 2008 | Page Operating, LLC | Fowler "22" #1 | 10,500 | 17333415 |
| 665840 | Jul 22, 2008 | Jul 22, 2008 | Manhattan Petroleum, Inc. | Schwartz #1 | 10,449 | 17332721 |
| 666319 | Jul 17, 2008 | Jul 17, 2008 | McClure Oil Company, Inc. | Glass "46" #3 | 7,300 | 17333414 |
| 665165 | Jul 14, 2008 | Jul 14, 2008 | Pioneer Natural Res. USA, Inc. | Houston Woody "9" #1 | 10,800 | 17333411 |
| 665192 | Jul 10, 2008 | Jul 10, 2008 | Pioneer Natural Res. USA, Inc. | Herzog "24" #2 | 10,500 | 17333412 |
| 665192Amendment | Jul 10, 2008 | Jul 10, 2008 | Pioneer Natural Res. USA, Inc. | Herzog "24" #2 | 11,000 | 17333412 |
| 665192Amendment | Jul 10, 2008 | Jul 10, 2008 | Pioneer Natural Res. USA, Inc. | Herzog "24" #2 | 11,000 | 17333412 |
| 664849 | Jul 9, 2008 | Jul 9, 2008 | Pioneer Natural Res. USA, Inc. | Whit "29" #1 | 10,500 | 17333410 |
| 661897 | Jul 8, 2008 | Jul 8, 2008 | Endeavor Energy Resources L.P. | Earhart "34A" #3 | 12,000 | 17333398 |
| 664626 | Jun 27, 2008 | Jun 27, 2008 | Page Operating, LLC | Poe #2 | 10,500 | 17333409 |
| 663387 | Jun 25, 2008 | Jun 25, 2008 | Merit Energy Company | Harris, B.A. #5 | 10,500 | 17333404 |
| 663384 | Jun 25, 2008 | Jun 25, 2008 | Merit Energy Company | Cook, G.P. #4 | 10,500 | 17333403 |
| 663839 | Jun 24, 2008 | Jun 24, 2008 | Pioneer Natural Res. USA, Inc. | Neste-Herzog "11" #1 | 10,300 | 17333407 |
| 663842 | Jun 21, 2008 | Jun 21, 2008 | Pioneer Natural Res. USA, Inc. | Tom "E" #2 | 10,500 | 17333408 |
| 663842Amendment | Jun 21, 2008 | Jun 21, 2008 | Pioneer Natural Res. USA, Inc. | Tom "E" #2 | 11,000 | 17333408 |
| 663692 | Jun 21, 2008 | Jun 21, 2008 | McClure Oil Company, Inc. | Glass "46" #2 | 7,300 | 17333406 |
| 663472 | Jun 18, 2008 | Jun 18, 2008 | Pioneer Natural Res. USA, Inc. | Walker 39 #1 | 11,000 | 17333405 |
| 658988Amendment | Jun 18, 2008 | Jun 18, 2008 | Pioneer Natural Res. USA, Inc. | Witt "24" #1 | 10,300 | 17333389 |
| 663224 | Jun 17, 2008 | Jun 17, 2008 | Pioneer Natural Res. USA, Inc. | McDaniel 34 #1 | 11,000 | 17333402 |
| 646603Amendment | Jun 12, 2008 | Jun 12, 2008 | Manhattan Petroleum, Inc. | Connie #1 | 10,500 | 17333351 |
| 662446 | Jun 7, 2008 | Jun 7, 2008 | Pioneer Natural Res. USA, Inc. | McDaniel "33" #1 | 11,000 | 17333401 |
| 661938 | Jun 3, 2008 | Jun 3, 2008 | Page Operating, LLC | Lawson #2 | 10,000 | 17333399 |
| 661938Amendment | Jun 3, 2008 | Jun 3, 2008 | Page Operating, LLC | Lawson #2 | 10,500 | 17333399 |
| 661937 | Jun 3, 2008 | Jun 3, 2008 | Page Operating, LLC | Lawson #1 | 10,000 | 17333400 |
| 661937Amendment | Jun 3, 2008 | Jun 3, 2008 | Page Operating, LLC | Lawson #1 | 10,500 | 17333400 |
| 660493 | Jun 3, 2008 | Jun 3, 2008 | Pioneer Natural Res. USA, Inc. | Weyman "22-B" #2 | 8,900 | 17333395 |
| 661745 | May 29, 2008 | May 29, 2008 | Merit Energy Company | McDaniel B #7 | 10,500 | 17333397 |
| 661745Amendment | May 29, 2008 | May 29, 2008 | Merit Energy Company | McDaniel B #7 | 10,500 | 17333397 |
| 660864 | May 19, 2008 | May 19, 2008 | Atropos Exploration Company | Hirt 27 #2 | 8,499 | 17333396 |
| 655374 | May 14, 2008 | May 14, 2008 | Dyad Petroleum Company | Glass "22" #1 | 6,800 | 17332764 |
| 658504 | May 13, 2008 | May 13, 2008 | Range Production Company | Edmondson #244 | 8,750 | 17333388 |
| 658504Amendment | May 13, 2008 | May 13, 2008 | Range Production Company | Edmondson #244 | 9,400 | 17333388 |
| 660401 | May 8, 2008 | May 8, 2008 | Pioneer Natural Res. USA, Inc. | Brunson "48" #1 | 10,800 | 17333394 |
| 660398 | May 8, 2008 | May 8, 2008 | Pioneer Natural Res. USA, Inc. | Brunson "24" #1 | 10,600 | 17333393 |
| 659230 | Apr 30, 2008 | Apr 30, 2008 | Cambrian Management, Ltd. | Berry #2102 | 10,250 | 17332403 |
| 659227 | Apr 30, 2008 | Apr 30, 2008 | Cambrian Management, Ltd. | Zant #201 | 10,500 | 17333392 |
| 659249 | Apr 25, 2008 | Apr 25, 2008 | Pioneer Natural Res. USA, Inc. | Houston Ranch "36" #1 | 9,558 | 17333261 |
| 659117 | Apr 24, 2008 | Apr 24, 2008 | Cambrian Management, Ltd. | Berry #2001 | 10,500 | 17333391 |
| 659007 | Apr 22, 2008 | Apr 22, 2008 | Pioneer Natural Res. USA, Inc. | Cheatham "31" #1 | 9,809 | 17333260 |