| 682015 | Jun 12, 2009 | Jun 12, 2009 | Piedra Operating, LLC | Zant #205 | 12,000 | 17333526 |
| 682015Amendment | Jun 12, 2009 | Jun 12, 2009 | Piedra Operating, LLC | Zant #205 | 12,000 | 17333526 |
| 681774 | Jun 10, 2009 | Jun 10, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1619W | 2,700 | 17333521 |
| 681773 | Jun 9, 2009 | Jun 9, 2009 | Sheridan Production Company, LLC | Glasscock , Howard W. (G-S) Unit #1812 | 2,700 | 17333525 |
| 681772 | Jun 9, 2009 | Jun 9, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1813 | 2,700 | 17333520 |
| 681831 | Jun 5, 2009 | Jun 5, 2009 | McClure Oil Company, Inc. | Glass "40" #2 | 7,800 | 17333524 |
| 681831Amendment | Jun 5, 2009 | Jun 5, 2009 | McClure Oil Company, Inc. | Glass "40" #2 | 5,100 | 17333524 |
| 681776 | Jun 5, 2009 | Jun 5, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1815W | 2,700 | 17333523 |
| 681775 | Jun 5, 2009 | Jun 5, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1814W | 2,700 | 17333522 |
| 681769 | Jun 5, 2009 | Jun 5, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1811 | 2,700 | 17333518 |
| 681768 | Jun 5, 2009 | Jun 5, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1810 | 2,700 | 17333519 |
| 681755 | Jun 5, 2009 | Jun 5, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1618 | 2,700 | 17333517 |
| 681753 | Jun 3, 2009 | Jun 3, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1617 | 2,700 | 17333516 |
| 681671 | Jun 2, 2009 | Jun 2, 2009 | Endeavor Energy Resources L.P. | Max "40" #4 | 12,000 | 17331921 |
| 681671Amendment | Jun 2, 2009 | Jun 2, 2009 | Endeavor Energy Resources L.P. | Max '40' #4 | 11,000 | 17331921 |
| 680555 | Jun 2, 2009 | Jun 2, 2009 | Piedra Operating, LLC | Blalock #1216 | 11,000 | 17333511 |
| 681620 | Jun 1, 2009 | Jun 1, 2009 | Thompson, J. Cleo | Abel #2 | 10,500 | 17333515 |
| 681620Amendment | Jun 1, 2009 | Jun 1, 2009 | OXY USA Inc. | Abel B #2 | 10,500 | 17333515 |
| 681164 | May 13, 2009 | May 13, 2009 | Chevron U. S. A. Inc. | Glasscock 'AB' Fee #5 | 8,635 | 17332231 |
| 681125 | May 11, 2009 | May 11, 2009 | Endeavor Energy Resources L.P. | Harvard '46' #1 | 12,000 | 17333514 |
| 681006 | May 7, 2009 | May 7, 2009 | Range Production Company | Edmondson A #2230 | 10,000 | 17333239 |
| 681005 | May 7, 2009 | May 7, 2009 | Range Production Company | Edmondson A #1630 | 10,000 | 17333174 |
| 680732 | Apr 30, 2009 | Apr 30, 2009 | Partee Drilling Inc. | Newell #1401 | 10,900 | 17333513 |
| 680728 | Apr 30, 2009 | Apr 30, 2009 | Crownquest Operating, LLC | Abel '4' #1 | 11,000 | 17333512 |
| 680779 | Apr 29, 2009 | Apr 29, 2009 | Royalty Land & Dev. Co., Inc. | Blalock, Lois #4 | 11,056 | 17331359 |
| 680778 | Apr 29, 2009 | Apr 29, 2009 | Royalty Land & Dev. Co., Inc. | Blalock, Lois #3 | 11,150 | 17331237 |
| 678823Amendment | Apr 28, 2009 | Apr 28, 2009 | Range Production Company | Edmondson A #3719 | 10,000 | 17333498 |
| 680367 | Apr 23, 2009 | Apr 23, 2009 | Orbit Crude, Inc. | Glass #3 | 9,500 | 17333509 |
| 680088 | Apr 22, 2009 | Apr 22, 2009 | McClure Oil Company, Inc. | Archer #3 | 7,200 | 17333503 |
| 680088Amendment | Apr 22, 2009 | Apr 22, 2009 | McClure Oil Company, Inc. | Archer #3 | 7,200 | 17333503 |
| 680494 | Apr 20, 2009 | Apr 20, 2009 | Laredo Petroleum, Inc. | Cox 29 #2 | 10,400 | 17333510 |
| 680494Amendment | Apr 20, 2009 | Apr 20, 2009 | Laredo Petroleum, Inc. | Cox 29 #2 | 10,400 | 17333510 |
| 680142 | Apr 17, 2009 | Apr 17, 2009 | McClure Oil Company, Inc. | McClure-Cole #1 | 8,200 | 17333506 |
| 680142Amendment | Apr 17, 2009 | Apr 17, 2009 | McClure Oil Company, Inc. | McClure-Cole #1 | 9,200 | 17333506 |
| 680229 | Apr 15, 2009 | Apr 15, 2009 | Crownquest Operating, LLC | Perry "48" #1 | 11,000 | 17333508 |
| 680228 | Apr 15, 2009 | Apr 15, 2009 | Crownquest Operating, LLC | Ingram Farms "5" #1 | 11,000 | 17333507 |
| 680090 | Apr 14, 2009 | Apr 14, 2009 | McClure Oil Company, Inc. | Glass "46" #5 | 5,300 | 17333505 |
| 680090Amendment | Apr 14, 2009 | Apr 14, 2009 | McClure Oil Company, Inc. | Glass "46" #5 | 5,200 | 17333505 |
| 680089 | Apr 14, 2009 | Apr 14, 2009 | McClure Oil Company, Inc. | Archer #4 | 7,200 | 17333504 |
| 680089Amendment | Apr 14, 2009 | Apr 14, 2009 | McClure Oil Company, Inc. | Archer #4 | 7,200 | 17333504 |
| 679747 | Mar 31, 2009 | Mar 31, 2009 | Dyad Petroleum Company | Kolb #1 | 9,800 | 17333500 |
| 679901 | Mar 30, 2009 | Mar 30, 2009 | Crownquest Operating, LLC | Stallings "3" #1 | 11,000 | 17333501 |
| 648260Amendment | Mar 26, 2009 | Mar 26, 2009 | Orbit Crude, Inc. | Glass #1 | 10,300 | 17330441 |
| 679692 | Mar 23, 2009 | Mar 23, 2009 | Pioneer Natural Res. USA, Inc. | Houston Ranch "12" #1 | 9,906 | 17333250 |
| 679408 | Mar 23, 2009 | Mar 23, 2009 | Pioneer Natural Res. USA, Inc. | Brunson "48" #1 | 10,370 | 17333394 |
| 679407 | Mar 23, 2009 | Mar 23, 2009 | Pioneer Natural Res. USA, Inc. | Brunson "24" #1 | 10,308 | 17333393 |
| 679626 | Mar 20, 2009 | Mar 20, 2009 | Element Petroleum Operating, LLC | Ed Books 11 #2 | 11,500 | 17333499 |
| 679047Amendment | Mar 9, 2009 | Mar 9, 2009 | Royalty Land & Dev. Co., Inc. | Blalock, Lois #4 | 11,056 | 17331359 |
| 679099 | Mar 6, 2009 | Mar 6, 2009 | Element Petroleum Operating, LLC | Books, E. D. 17 #1 | 11,000 | 17333497 |
| 679099Amendment | Mar 6, 2009 | Mar 6, 2009 | Mariner Energy, Inc. | E.D. Books 17 #1 | 11,000 | 17333497 |
| 678823 | Mar 4, 2009 | Mar 4, 2009 | Range Production Company | Edmondson A #3719 | 9,330 | 17333498 |
| 679047 | Mar 3, 2009 | Mar 3, 2009 | Royalty Land & Dev. Co., Inc. | Blalock, Lois #4 | 11,056 | 17331359 |
| 678316Amendment | Mar 2, 2009 | Mar 2, 2009 | Pioneer Natural Res. USA, Inc. | Cheatham 13 #3 | 10,600 | 17333495 |
| 676550Amendment | Feb 27, 2009 | Feb 27, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1327 | 3,200 | 17333487 |
| 678401 | Feb 20, 2009 | Feb 20, 2009 | Pioneer Natural Res. USA, Inc. | Weyman 23 #2 | 10,800 | 17333496 |
| 678316 | Feb 18, 2009 | Feb 18, 2009 | Pioneer Natural Res. USA, Inc. | Cheatham 13 #3 | 9,700 | 17333495 |
| 678316Amendment | Feb 18, 2009 | Feb 18, 2009 | Pioneer Natural Res. USA, Inc. | Cheatham 13 #3 | 9,700 | 17333495 |
| 677736 | Feb 4, 2009 | Feb 4, 2009 | COG Operating LLC | Currie "E" #508 | 10,800 | 17333493 |
| 677717 | Feb 3, 2009 | Feb 3, 2009 | Pioneer Natural Res. USA, Inc. | Brunson "48" #1 | 10,370 | 17333394 |
| 677702 | Feb 2, 2009 | Feb 2, 2009 | Pioneer Natural Res. USA, Inc. | Brunson 24 #1 | 10,308 | 17333393 |
| 677630 | Jan 30, 2009 | Jan 30, 2009 | Pioneer Natural Res. USA, Inc. | Winslow B #1D | 6,000 | 17333492 |
| 677630Amendment | Jan 30, 2009 | Jan 30, 2009 | Pioneer Natural Res. USA, Inc. | Winslow "B" #2 | 10,500 | 17333492 |
| 677733 | Jan 28, 2009 | Jan 28, 2009 | COG Operating LLC | Currie #3615 | 10,800 | 17333491 |
| 673310Amendment | Jan 27, 2009 | Jan 27, 2009 | Pioneer Natural Res. USA, Inc. | Houston Ranch "13" #1 | 10,800 | 17333454 |
| 677157 | Jan 21, 2009 | Jan 21, 2009 | Pioneer Natural Res. USA, Inc. | Witt 24 #2 | 10,300 | 17333490 |
| 677157Amendment | Jan 21, 2009 | Jan 21, 2009 | Pioneer Natural Res. USA, Inc. | Witt 24 #2 | 10,300 | 17333490 |
| 677157Amendment | Jan 21, 2009 | Jan 21, 2009 | Pioneer Natural Res. USA, Inc. | Witt 24 #2 | 10,300 | 17333490 |
| 677157Amendment | Jan 21, 2009 | Jan 21, 2009 | Pioneer Natural Res. USA, Inc. | Witt 24 #2 | 10,300 | 17333490 |
| 676557 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1518W | 3,200 | 17333488 |
| 676556 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1326W | 3,200 | 17333486 |
| 676550 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1327 | 3,200 | 17333487 |
| 676545 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | W. Howard Glasscock (G-S) Unit #1412 | 3,200 | 17333489 |
| 676497 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1411W | 3,200 | 17333478 |
| 676495 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1410W | 3,200 | 17333477 |
| 676494 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1409 | 3,200 | 17333476 |
| 676492 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1407W | 3,200 | 17333480 |
| 676488 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1517 | 3,200 | 17333482 |
| 676479 | Jan 14, 2009 | Jan 14, 2009 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1516 | 3,200 | 17333485 |
| 676976 | Jan 8, 2009 | Jan 8, 2009 | Adkins, R. L. Corp. | Glass, J.L. Ranch #1 | 9,900 | 17331851 |
| 676824 | Jan 5, 2009 | Jan 5, 2009 | EOG Resources, Inc. | Guthrie Trust "19" #1 | 11,000 | 17333484 |
| 676824Amendment | Jan 5, 2009 | Jan 5, 2009 | EOG Resources, Inc. | Guthrie Trust "19" #1 | 11,000 | 17333484 |
| 676656 | Jan 2, 2009 | Jan 2, 2009 | Range Production Company | Edmondson A #3530 | 9,330 | 17333481 |
| 676521 | Dec 31, 2008 | Dec 31, 2008 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1325 | 3,200 | 17333479 |
| 676493 | Dec 31, 2008 | Dec 31, 2008 | Sheridan Production Company, LLC | Glasscock, Howard W. (G-S) Unit #1408W | 3,200 | 17333483 |
| 676634 | Dec 22, 2008 | Dec 22, 2008 | Laredo Petroleum, Inc. | Underwood 9 #1HRH | 9,600 | 17333475 |
| 676110 | Dec 12, 2008 | Dec 12, 2008 | Pioneer Natural Res. USA, Inc. | Winslow "B" #1 | 9,700 | 17333474 |
| 675640Amendment | Dec 12, 2008 | Dec 12, 2008 | Endeavor Energy Resources L.P. | Bryfar #2D | 12,000 | 17333472 |
| 672920 | Dec 9, 2008 | Dec 9, 2008 | Piedra Operating, LLC | Blalock #1202 | 10,500 | 17332423 |
| 675728 | Dec 3, 2008 | Dec 3, 2008 | Pioneer Natural Res. USA, Inc. | Griffith "25" #1 | 9,800 | 17333473 |
| 675640 | Dec 3, 2008 | Dec 3, 2008 | Endeavor Energy Resources L.P. | Bryfar #2D | 12,000 | 17333472 |
| 675634 | Dec 2, 2008 | Dec 2, 2008 | Pioneer Natural Res. USA, Inc. | Walker "39" #2 | 10,500 | 17333471 |
| 675384 | Nov 25, 2008 | Nov 25, 2008 | Pioneer Natural Res. USA, Inc. | McDaniel "34" #2 | 10,600 | 17333470 |
| 675345 | Nov 24, 2008 | Nov 24, 2008 | Pioneer Natural Res. USA, Inc. | McDaniel "33" #2 | 10,600 | 17333469 |
| 675124 | Nov 20, 2008 | Nov 20, 2008 | Pioneer Natural Res. USA, Inc. | Riggan #1 | 10,800 | 17333468 |
| 674750 | Nov 15, 2008 | Nov 15, 2008 | Range Production Company | Edmondson A #332 | 9,330 | 17333467 |
| 674749 | Nov 15, 2008 | Nov 15, 2008 | Range Production Company | Edmondson A #3219 | 9,330 | 17333466 |
| 674470 | Nov 13, 2008 | Nov 13, 2008 | Pioneer Natural Res. USA, Inc. | Jim Tom "42" #3 | 10,800 | 17333465 |
| 674299 | Nov 7, 2008 | Nov 7, 2008 | Mariner Energy, Inc. | Gibson 7 #1 | 14,000 | 17333464 |
| 674241 | Nov 6, 2008 | Nov 6, 2008 | Mariner Energy, Inc. | Keathley 46 #2 | 10,400 | 17333463 |
| 674241Amendment | Nov 6, 2008 | Nov 6, 2008 | Mariner Energy, Inc. | Keathley 46 #2 | 11,000 | 17333463 |