| 684629Amendment | Aug 31, 2009 | Aug 31, 2009 | Forest Oil Corporation | T. G. E. Moerbe #1H | 8,000 | 28732568 |
| 684629Amendment | Aug 31, 2009 | Aug 31, 2009 | Forest Oil Corporation | T. G. E. Moerbe #1H | 8,000 | 28732568 |
| 683572 | Jul 31, 2009 | Jul 31, 2009 | Brammer Engineering, Inc. | Boettcher Hall #1HH | 7,000 | 28732567 |
| 683572Amendment | Jul 31, 2009 | Jul 31, 2009 | Brammer Engineering, Inc. | Boettcher Hall #1HH | 7,000 | 28732567 |
| 683262 | Jul 22, 2009 | Jul 22, 2009 | Brammer Engineering, Inc. | Woodward Kasper #1HH | 7,400 | 28732566 |
| 683217 | Jul 21, 2009 | Jul 21, 2009 | Brammer Engineering, Inc. | N. Perry #1 | 7,400 | 28732565 |
| 683217Amendment | Jul 21, 2009 | Jul 21, 2009 | Brammer Engineering, Inc. | N. Perry #1HH | 7,400 | 28732565 |
| 683021 | Jul 16, 2009 | Jul 16, 2009 | Brammer Engineering, Inc. | Harrison #1 | 5,000 | 28732564 |
| 682537 | Jul 13, 2009 | Jul 13, 2009 | Enervest Operating, L.L.C. | Wolf-Simpson Unit #1REH | 9,950 | 28730902 |
| 682537Amendment | Jul 13, 2009 | Jul 13, 2009 | Enervest Operating, L.L.C. | Wolf-Simpson Unit #1REH | 11,979 | 28730902 |
| 682334 | Jun 23, 2009 | Jun 23, 2009 | Brammer Engineering, Inc. | Markert-Brown #2HH | 7,000 | 28732563 |
| 680970 | May 11, 2009 | May 11, 2009 | Marathon Oil Company | Evelyn #1H | 9,737 | 28732538 |
| 679650 | Mar 20, 2009 | Mar 20, 2009 | Enervest Operating, L.L.C. | Ruthven-Bisett Co-OP Unit #1H | 11,000 | 28732562 |
| 679650Amendment | Mar 20, 2009 | Mar 20, 2009 | Enervest Operating, L.L.C. | Ruthven-Bisett Co-OP Unit #1H | 11,000 | 28732562 |
| 679650Amendment | Mar 20, 2009 | Mar 20, 2009 | Magnolia Oil & Gas Operating LLC | Ruthven Bisett #H 01H | 11,000 | 28732562 |
| 678165 | Feb 5, 2009 | Feb 5, 2009 | Enervest Operating, L.L.C. | Bluebonnet Unit #2REH | 10,000 | 28731187 |
| 678032 | Feb 3, 2009 | Feb 3, 2009 | Enervest Operating, L.L.C. | Tate Unit #1REH | 10,000 | 28732436 |
| 676783 | Jan 7, 2009 | Jan 7, 2009 | Nestex Energy, LLC | Bage #1 | 5,200 | 28732561 |
| 675469 | Nov 26, 2008 | Nov 26, 2008 | U. S. Operating, Inc. | Jane #1 | 8,110 | 28730779 |
| 674461 | Nov 20, 2008 | Nov 20, 2008 | Enervest Operating, L.L.C. | Ullrich 'A' #1REH | 10,900 | 28732379 |
| 669765 | Nov 6, 2008 | Nov 6, 2008 | Apache Corporation | Wilbanks #2 | 9,000 | 28731348 |
| 674016 | Nov 3, 2008 | Nov 3, 2008 | Anatexas Offshore, Inc. | Vick A #2 | 6,700 | 28732560 |
| 674016Amendment | Nov 3, 2008 | Nov 3, 2008 | Anatexas Offshore, Inc. | Vick A #2H | 6,700 | 28732560 |
| 674016Amendment | Nov 3, 2008 | Nov 3, 2008 | Anatexas Offshore, Inc. | Vick A #2H | 6,700 | 28732560 |
| 674016Amendment | Nov 3, 2008 | Nov 3, 2008 | Anatexas Offshore, Inc. | Vick A #2H | 6,700 | 28732560 |
| 673868 | Oct 29, 2008 | Oct 29, 2008 | Anatexas Offshore, Inc. | Vick #1 | 6,700 | 28732559 |
| 673868Amendment | Oct 29, 2008 | Oct 29, 2008 | Anatexas Offshore, Inc. | Vick #1 | 6,700 | 28732559 |
| 673868Amendment | Oct 29, 2008 | Oct 29, 2008 | Anatexas Offshore, Inc. | Vick #1H | 6,700 | 28732559 |
| 664908Amendment | Oct 22, 2008 | Oct 22, 2008 | Enervest Operating, L.L.C. | K-Bob Co-OP Unit #2H | 11,000 | 28732555 |
| 663838Amendment | Oct 15, 2008 | Oct 15, 2008 | Nestex Energy, LLC | B-P #A 1 | 5,200 | 28732554 |
| 669879 | Sep 16, 2008 | Sep 16, 2008 | Brammer Engineering, Inc. | Markert-Brown #2 | 4,600 | 28732558 |
| 667252 | Aug 9, 2008 | Aug 9, 2008 | Patton Exploration, Inc. | Samuelson #1 | 3,500 | 28732557 |
| 664908 | Jul 17, 2008 | Jul 17, 2008 | Enervest Operating, L.L.C. | K-Bob Co-OP Unit #2H | 11,000 | 28732555 |
| 662576 | Jul 9, 2008 | Jul 9, 2008 | U. S. Operating, Inc. | Leona #1 | 9,512 | 28731499 |
| 663896 | Jul 8, 2008 | Jul 8, 2008 | Nestex Energy, LLC | Claudie #1 | 5,200 | 28732553 |
| 663894 | Jul 8, 2008 | Jul 8, 2008 | Nestex Energy, LLC | Marburger #1 | 5,200 | 28732552 |
| 663892 | Jul 8, 2008 | Jul 8, 2008 | Nestex Energy, LLC | B-P #2 | 5,200 | 28732549 |
| 663838 | Jul 8, 2008 | Jul 8, 2008 | Nestex Energy, LLC | B-P "A" #1 | 5,200 | 28732554 |
| 663809 | Jul 8, 2008 | Jul 8, 2008 | Nestex Energy, LLC | Gold, Bob et UX #2 | 5,200 | 28732550 |
| 663804 | Jul 8, 2008 | Jul 8, 2008 | Nestex Energy, LLC | Gold, Bob et UX #1 | 5,200 | 28732551 |
| 662251 | Jun 30, 2008 | Jun 30, 2008 | WCS Oil & Gas Corporation | Westbrook #1 | 9,336 | 28730499 |
| 663250 | Jun 18, 2008 | Jun 18, 2008 | Apache Corporation | Fenn Ranch Unit #E 1HH | 8,500 | 28732548 |
| 661751 | May 29, 2008 | May 29, 2008 | Brammer Engineering, Inc. | Kleinschmidt #1HH | 7,000 | 28732547 |
| 660350 | May 8, 2008 | May 8, 2008 | Brammer Engineering, Inc. | Markert-Brown #1HH | 7,000 | 28732546 |
| 657616 | Apr 7, 2008 | Apr 7, 2008 | U. S. Operating, Inc. | Joan #1 | 8,135 | 28730522 |
| 657615 | Apr 1, 2008 | Apr 1, 2008 | U. S. Operating, Inc. | Dee #1 | 8,140 | 28730575 |
| 654734 | Mar 12, 2008 | Mar 12, 2008 | WCS Oil & Gas Corporation | Gantt, T. K. #1REH | 9,000 | 28731767 |
| 656635 | Mar 7, 2008 | Mar 7, 2008 | Black Sable Energy, LLC | Lewis Trust #1 | 5,000 | 28732545 |
| 652833 | Jan 25, 2008 | Jan 25, 2008 | Enervest Operating, L.L.C. | Judy #2H | 11,000 | 28732544 |
| 652833Amendment | Jan 25, 2008 | Jan 25, 2008 | Enervest Operating, L.L.C. | Judy #2H | 11,000 | 28732544 |
| 649521 | Dec 19, 2007 | Dec 19, 2007 | WCS Oil & Gas Corporation | Simmang, Q. W. #1REH | 9,000 | 28731608 |
| 650103 | Dec 12, 2007 | Dec 12, 2007 | U. S. Operating, Inc. | Haley #1 | 8,200 | 28730569 |
| 650424 | Dec 10, 2007 | Dec 10, 2007 | Enervest Operating, L.L.C. | Judy #1REH | 11,000 | 28730508 |
| 650307 | Dec 6, 2007 | Dec 6, 2007 | WCS Oil & Gas Corporation | Hardwick-Biggs #2 | 7,949 | 28730554 |
| 647478 | Oct 16, 2007 | Oct 16, 2007 | Enervest Operating, L.L.C. | Griffin-Pruegner #1REH | 11,000 | 28731624 |
| 645702 | Sep 12, 2007 | Sep 12, 2007 | Seaco Production | Baird #6B | 6,500 | 28732543 |
| 645173 | Aug 30, 2007 | Aug 30, 2007 | U. S. Operating, Inc. | Mabel #1 | 8,435 | 28730821 |
| 644727 | Aug 30, 2007 | Aug 30, 2007 | U. S. Operating, Inc. | Delta Dawn (Navarro) #2 | 6,000 | 28732542 |
| 644305 | Aug 20, 2007 | Aug 20, 2007 | U. S. Operating, Inc. | Harriet (Navarro) #1 | 6,000 | 28732540 |
| 644304 | Aug 20, 2007 | Aug 20, 2007 | U. S. Operating, Inc. | Irene (Navarro) #1 | 6,000 | 28732541 |
| 641132 | Jul 3, 2007 | Jul 3, 2007 | U. S. Operating, Inc. | Dirk #1 | 8,365 | 28731134 |
| 631755 | Feb 2, 2007 | Feb 2, 2007 | Leexus Oil & Gas L.L.P. | Noack, R. W. #1 | 4,000 | 28732539 |
| 631755Amendment | Feb 2, 2007 | Feb 2, 2007 | Sto Operating Company | Noack, R. W. #1 | 4,000 | 28732539 |
| 629915 | Jan 24, 2007 | Jan 24, 2007 | Anadarko E&P Company LP | Two Fingers Unit #2REH | 9,550 | 28730400 |
| 629915Amendment | Jan 24, 2007 | Jan 24, 2007 | Enervest Operating, L.L.C. | Two Fingers Unit #2REH | 9,900 | 28730400 |
| 630641 | Jan 9, 2007 | Jan 9, 2007 | Anadarko E&P Company LP | Sheppard Unit #1REH | 9,000 | 28730804 |
| 628988 | Nov 14, 2006 | Nov 14, 2006 | Marathon Oil Company | Evelyn #1H | 15,000 | 28732538 |
| 628988Amendment | Nov 14, 2006 | Nov 14, 2006 | Marathon Oil Company | Evelyn #1H | 15,000 | 28732538 |
| 628262 | Oct 31, 2006 | Oct 31, 2006 | WCS Oil & Gas Corporation | Truitt #1REH | 10,000 | 28730587 |
| 626380 | Oct 13, 2006 | Oct 13, 2006 | Leexus Oil & Gas L.L.P. | Kruemcke-Herklotz #4 | 5,500 | 28732536 |
| 626388 | Oct 3, 2006 | Oct 3, 2006 | Leexus Oil & Gas L.L.P. | Kruemcke-Herklotz #5 | 5,500 | 28732537 |
| 624003 | Aug 14, 2006 | Aug 14, 2006 | Anadarko E&P Company LP | Zgabay Unit #3REH | 8,182 | 28730979 |
| 624003Amendment | Aug 14, 2006 | Aug 14, 2006 | Enervest Operating, L.L.C. | Zgabay Unit #3REH | 9,915 | 28730979 |
| 621311 | Jun 21, 2006 | Jun 21, 2006 | Anadarko E&P Company LP | Della #1REH | 9,000 | 28731285 |
| 621311Amendment | Jun 21, 2006 | Jun 21, 2006 | Anadarko E&P Company LP | Della #1REH | 9,000 | 28731285 |
| 618923 | May 10, 2006 | May 10, 2006 | Houston Petroleum Company | Harrison, Parker B. J. #1 | 6,000 | 28731183 |
| 616671 | Apr 24, 2006 | Apr 24, 2006 | Anadarko E&P Company LP | Mozelle Hancock #1REH | 9,700 | 28731049 |
| 614377 | Apr 21, 2006 | Apr 21, 2006 | Anadarko Austin Chalk Company | G.P. Proske #3REH | 9,200 | 28731863 |
| 614377Amendment | Apr 21, 2006 | Apr 21, 2006 | Anadarko E&P Company LP | Proske, G. P. #3REH | 9,200 | 28731863 |
| 615997 | Mar 20, 2006 | Mar 20, 2006 | U. S. Operating, Inc. | Darlene #1PG | 8,291 | 28730482 |
| 615375 | Mar 9, 2006 | Mar 9, 2006 | U. S. Operating, Inc. | Caron #1PG | 8,777 | 28730411 |
| 614908 | Mar 1, 2006 | Mar 1, 2006 | Seaco Production | Baird #5B | 6,500 | 28732535 |
| 614189 | Feb 14, 2006 | Feb 14, 2006 | Chaparral Energy, L.L.C. | Hammerhead #1 | 10,500 | 28732534 |
| 612546 | Jan 18, 2006 | Jan 18, 2006 | Anadarko E&P Company LP | Gerdes, Garwood #E 2REH | 9,000 | 28731661 |
| 610529 | Dec 6, 2005 | Dec 6, 2005 | Anadarko E&P Company LP | Gerdes, Garwood #F 1H | 9,500 | 28730693 |
| 610529Amendment | Dec 6, 2005 | Dec 6, 2005 | Cirrus Production Company | Gerdes, Garwood #F 1REH | 9,500 | 28730693 |
| 610143 | Nov 30, 2005 | Nov 30, 2005 | U. S. Operating, Inc. | Margaret #1REH | 8,400 | 28730776 |
| 604371 | Nov 29, 2005 | Nov 29, 2005 | WCS Oil & Gas Corporation | M & K #1REH | 10,000 | 28730042 |
| 609743 | Nov 18, 2005 | Nov 18, 2005 | Houston Petroleum Company | Hooper, Jimmie #1 | 5,000 | 28732533 |
| 608799 | Nov 4, 2005 | Nov 4, 2005 | U. S. Operating, Inc. | Mildred #1REH | 8,200 | 28731072 |
| 608642 | Nov 1, 2005 | Nov 1, 2005 | Leexus Oil & Gas L.L.P. | Washington #1 | 6,000 | 28732532 |
| 608593 | Oct 28, 2005 | Oct 28, 2005 | Anadarko E&P Company LP | Garwood Gerdes Estate C #1REH | 9,500 | 28730497 |
| 608593Amendment | Oct 28, 2005 | Oct 28, 2005 | Cirrus Production Company | Garwood Gerdes Estate C #1REH | 9,500 | 28730497 |
| 606763 | Oct 18, 2005 | Oct 18, 2005 | Anadarko E&P Company LP | Garwood Gerdes D #2H | 9,000 | 28731637 |
| 607902 | Oct 14, 2005 | Oct 14, 2005 | Dominion Oklahoma Texas E&P, Inc | Betty Unit #1 | 8,000 | 28730634 |
| 604075 | Sep 12, 2005 | Sep 12, 2005 | WCS Oil & Gas Corporation | Carol #1REH | 11,000 | 28731576 |
| 604075Amendment | Sep 12, 2005 | Sep 12, 2005 | WCS Oil & Gas Corporation | Carol #1REH | 11,000 | 28731576 |
| 605046 | Sep 1, 2005 | Sep 1, 2005 | U. S. Operating, Inc. | Barbara #1REH | 9,160 | 28730551 |
| 605044 | Sep 1, 2005 | Sep 1, 2005 | U. S. Operating, Inc. | Sharon #1RHH | 9,100 | 28732466 |
| 603212 | Sep 1, 2005 | Sep 1, 2005 | U. S. Operating, Inc. | Ruthie #1REH | 9,200 | 28730468 |