| 710745 | Feb 28, 2011 | Feb 28, 2011 | WCS Oil & Gas Corporation | Crump Family Trust #1HH | 9,500 | 05133690 |
| 710269 | Feb 17, 2011 | Feb 17, 2011 | Anadarko E&P Company LP | Calvin-Fachorn Unit #3H | 12,000 | 05133688 |
| 710269Amendment | Feb 17, 2011 | Feb 17, 2011 | Anadarko E&P Company LP | Calvin-Fachorn Unit #3H | 12,000 | 05133688 |
| 709486 | Feb 2, 2011 | Feb 2, 2011 | Williams, Clayton Energy, Inc. | Ondrasek OL Unit #2H | 7,600 | 05133687 |
| 709486Amendment | Feb 2, 2011 | Feb 2, 2011 | Williams, Clayton Energy, Inc. | Ondrasek OL Unit #2H | 7,600 | 05133687 |
| 708913 | Jan 26, 2011 | Jan 26, 2011 | Williams, Clayton Energy, Inc. | Abbott Unit #1H | 7,500 | 05133685 |
| 706290 | Jan 10, 2011 | Jan 10, 2011 | WCS Oil & Gas Corporation | Pecore-Brazos #1HH | 12,500 | 05133683 |
| 707688 | Dec 30, 2010 | Dec 30, 2010 | Williams, Clayton Energy, Inc. | Washington-Eagleton Unit #2H | 6,850 | 05133684 |
| 706540 | Dec 14, 2010 | Dec 14, 2010 | Argent Petroleum Corporation | Pecan Valley #1 | 8,150 | 05132793 |
| 705471 | Nov 19, 2010 | Nov 19, 2010 | Williams, Clayton Energy, Inc. | M. D. Clark OL Unit #1H | 7,200 | 05133682 |
| 705471Amendment | Nov 19, 2010 | Nov 19, 2010 | Williams, Clayton Energy, Inc. | M. D. Clark OL Unit #1H | 7,200 | 05133682 |
| 703990 | Nov 17, 2010 | Nov 17, 2010 | Williams, Clayton Energy, Inc. | Trcalek-Story Unit #1H | 7,700 | 05133681 |
| 703960 | Oct 21, 2010 | Oct 21, 2010 | Williams, Clayton Energy, Inc. | Smalley OL Unit #1H | 8,000 | 05133680 |
| 703960Amendment | Oct 21, 2010 | Oct 21, 2010 | Williams, Clayton Energy, Inc. | Smalley OL Unit #1H | 8,000 | 05133680 |
| 702996 | Oct 7, 2010 | Oct 7, 2010 | Williams, Clayton Energy, Inc. | Piwonka OL Unit #1H | 7,000 | 05133679 |
| 702996Amendment | Oct 7, 2010 | Oct 7, 2010 | Williams, Clayton Energy, Inc. | Piwonka OL Unit #1H | 7,000 | 05133679 |
| 702631 | Sep 24, 2010 | Sep 24, 2010 | Williams, Clayton Energy, Inc. | Ondrasek OL Unit #1H | 7,600 | 05133678 |
| 702631Amendment | Sep 24, 2010 | Sep 24, 2010 | Williams, Clayton Energy, Inc. | Ondrasek OL Unit #1H | 7,600 | 05133678 |
| 701675 | Sep 7, 2010 | Sep 7, 2010 | Williams, Clayton Energy, Inc. | Smith-Smith Unit #1H | 6,800 | 05133677 |
| 701220 | Aug 27, 2010 | Aug 27, 2010 | Williams, Clayton Energy, Inc. | Washington-Eagleton Unit #1H | 7,100 | 05133676 |
| 701220Amendment | Aug 27, 2010 | Aug 27, 2010 | Williams, Clayton Energy, Inc. | Washington-Eagleton Unit #1H | 7,100 | 05133676 |
| 701168 | Aug 26, 2010 | Aug 26, 2010 | Anadarko E&P Company LP | Remington Unit #2H | 10,000 | 05133675 |
| 701168Amendment | Aug 26, 2010 | Aug 26, 2010 | Anadarko E&P Company LP | Remington Unit #2H | 10,000 | 05133675 |
| 701083 | Aug 25, 2010 | Aug 25, 2010 | Williams, Clayton Energy, Inc. | Mecom-Wood Unit #1H | 7,000 | 05133674 |
| 701083Amendment | Aug 25, 2010 | Aug 25, 2010 | Williams, Clayton Energy, Inc. | Mecom-Wood Unit #1H | 7,000 | 05133674 |
| 700358 | Aug 17, 2010 | Aug 17, 2010 | Leexus Oil LLC | Eddie Lacina Unit #1H | 11,305 | 05133120 |
| 698133 | Aug 4, 2010 | Aug 4, 2010 | Williams, Clayton Energy, Inc. | Whitney Unit #2H | 7,000 | 05133670 |
| 698133Amendment | Aug 4, 2010 | Aug 4, 2010 | Williams, Clayton Energy, Inc. | Whitney Unit #2H | 7,700 | 05133670 |
| 699942 | Aug 3, 2010 | Aug 3, 2010 | Williams, Clayton Energy, Inc. | Wilkens-Feld OL Unit #1H | 7,000 | 05133673 |
| 699942Amendment | Aug 3, 2010 | Aug 3, 2010 | Williams, Clayton Energy, Inc. | Wilkens-Feld OL Unit #1H | 7,003 | 05133673 |
| 698679 | Aug 2, 2010 | Aug 2, 2010 | Williams, Clayton Energy, Inc. | Marsh Unit #2H | 7,000 | 05133671 |
| 699183 | Jul 20, 2010 | Jul 20, 2010 | Evolution Operating Co., Inc. | Supak-Brinkman #1HH | 10,000 | 05133672 |
| 697635 | Jun 17, 2010 | Jun 17, 2010 | Anadarko E&P Company LP | Barton-Lightsey Unit #1REH | 11,000 | 05133216 |
| 696140 | Jun 9, 2010 | Jun 9, 2010 | Williams, Clayton Energy, Inc. | Storm Unit #2H | 7,000 | 05133666 |
| 696140Amendment | Jun 9, 2010 | Jun 9, 2010 | Williams, Clayton Energy, Inc. | Storm Unit #2H | 7,000 | 05133666 |
| 696993 | Jun 4, 2010 | Jun 4, 2010 | Williams, Clayton Energy, Inc. | Alford-Alford Unit #1H | 7,000 | 05133669 |
| 696970 | Jun 3, 2010 | Jun 3, 2010 | Williams, Clayton Energy, Inc. | Ray Ann Alford Unit #1H | 6,900 | 05133668 |
| 696663 | May 27, 2010 | May 27, 2010 | Future Petroleum Company LLC | Victorick #1HH | 8,300 | 05133667 |
| 696663Amendment | May 27, 2010 | May 27, 2010 | Future Petroleum Company LLC | Victorick #1HH | 8,300 | 05133667 |
| 696416 | May 24, 2010 | May 24, 2010 | Evolution Operating Co., Inc. | Nix #1RE | 9,500 | 05131593 |
| 695182 | Apr 29, 2010 | Apr 29, 2010 | Williams, Clayton Energy, Inc. | Smalley-Robinson Unit #1H | 8,000 | 05133665 |
| 695182Amendment | Apr 29, 2010 | Apr 29, 2010 | Williams, Clayton Energy, Inc. | Smalley-Robinson Unit #1H | 8,000 | 05133665 |
| 693779 | Apr 1, 2010 | Apr 1, 2010 | Williams, Clayton Energy, Inc. | Hajovksy-Jones Unit #1H | 7,000 | 05133664 |
| 693779Amendment | Apr 1, 2010 | Apr 1, 2010 | Williams, Clayton Energy, Inc. | Hajovsky-Jones Unit #1H | 7,000 | 05133664 |
| 693769 | Apr 1, 2010 | Apr 1, 2010 | Texas Onshore Energy, Inc. | Junek-Shupak Unit #1H | 11,481 | 05133241 |
| 693769Amendment | Apr 1, 2010 | Apr 1, 2010 | Galloway Lone Star, L.L.C. | Junek-Shupak Unit #1H | 11,481 | 05133241 |
| 692708 | Mar 12, 2010 | Mar 12, 2010 | Williams, Clayton Energy, Inc. | Friddell OL Unit #2H | 7,000 | 05133663 |
| 692708Amendment | Mar 12, 2010 | Mar 12, 2010 | Williams, Clayton Energy, Inc. | Friddell OL Unit #2H | 7,500 | 05133663 |
| 692606 | Mar 11, 2010 | Mar 11, 2010 | Anadarko E&P Company LP | Claudia #1REH | 7,500 | 05133094 |
| 692606Amendment | Mar 11, 2010 | Mar 11, 2010 | Anadarko E&P Company LP | Claudia #1REH | 7,500 | 05133094 |
| 692559 | Mar 11, 2010 | Mar 11, 2010 | Atinum Operating, Inc. | Black Stone Minerals #1HH | 10,000 | 05133662 |
| 691017 | Mar 9, 2010 | Mar 9, 2010 | Williams, Clayton Energy, Inc. | Graham, Lois -A- #4HH | 7,000 | 05133659 |
| 691017Amendment | Mar 9, 2010 | Mar 9, 2010 | Williams, Clayton Energy, Inc. | Graham, Lois -A- #4HH | 7,700 | 05133659 |
| 690991 | Mar 9, 2010 | Mar 9, 2010 | Williams, Clayton Energy, Inc. | Summers Unit #2H | 7,000 | 05133658 |
| 690991Amendment | Mar 9, 2010 | Mar 9, 2010 | Williams, Clayton Energy, Inc. | Summers Unit #2H | 7,000 | 05133658 |
| 691597 | Feb 22, 2010 | Feb 22, 2010 | Williams, Clayton Energy, Inc. | Ayers-Jackson Unit #1H | 7,000 | 05133661 |
| 691526 | Feb 19, 2010 | Feb 19, 2010 | Williams, Clayton Energy, Inc. | Daniels-Marsh Unit #1H | 7,000 | 05133660 |
| 691526Amendment | Feb 19, 2010 | Feb 19, 2010 | Williams, Clayton Energy, Inc. | Daniels-Marsh Unit #1H | 7,000 | 05133660 |
| 690155 | Jan 26, 2010 | Jan 26, 2010 | Anadarko E&P Company LP | Sebesta, James Unit #H 1REH | 11,000 | 05133264 |
| 689948 | Jan 21, 2010 | Jan 21, 2010 | Anadarko E&P Company LP | Stefka-Stefka Unit #1REH | 10,000 | 05133050 |
| 689890 | Jan 21, 2010 | Jan 21, 2010 | Anadarko E&P Company LP | Lois #1REH | 11,000 | 05133032 |
| 688087 | Dec 2, 2009 | Dec 2, 2009 | Anadarko E&P Company LP | Williams-Drgac Unit #1REH | 9,400 | 05133070 |
| 687957 | Dec 2, 2009 | Dec 2, 2009 | Anadarko E&P Company LP | Joanna #1REH | 7,600 | 05133031 |
| 687469 | Nov 17, 2009 | Nov 17, 2009 | Williams, Clayton Energy, Inc. | Broesche OL Unit #1H | 8,300 | 05133657 |
| 687469Amendment | Nov 17, 2009 | Nov 17, 2009 | Williams, Clayton Energy, Inc. | Broesche OL Unit #1H | 8,300 | 05133657 |
| 687469Amendment | Nov 17, 2009 | Nov 17, 2009 | Williams, Clayton Energy, Inc. | Broesche Unit #1H | 7,800 | 05133657 |
| 685945 | Nov 4, 2009 | Nov 4, 2009 | WCS Oil & Gas Corporation | Prison Farm #1HH | 11,000 | 05133656 |
| 685746 | Oct 5, 2009 | Oct 5, 2009 | Williams, Clayton Energy, Inc. | Weeber-Alford Unit #1H | 7,000 | 05133655 |
| 685150 | Sep 16, 2009 | Sep 16, 2009 | Williams, Clayton Energy, Inc. | Luksa-Kubelka OL Unit #1H | 7,400 | 05133654 |
| 685150Amendment | Sep 16, 2009 | Sep 16, 2009 | Williams, Clayton Energy, Inc. | Luksa-Kubelka OL Unit #1H | 7,400 | 05133654 |
| 683058 | Aug 28, 2009 | Aug 28, 2009 | Sheridan Production Company, LLC | Abner #1 | 8,300 | 05132784 |
| 683654 | Aug 13, 2009 | Aug 13, 2009 | Pavlas Oil & Gas | R.L. Pavlas #4 | 3,376 | 05120017 |
| 682626 | Jul 28, 2009 | Jul 28, 2009 | Robert T. Epperson Prod Co, LLC | Neal #1R | 4,500 | 05133653 |
| 682603 | Jul 1, 2009 | Jul 1, 2009 | Williams, Clayton Energy, Inc. | Rader Lowell Unit #1H | 6,900 | 05133652 |
| 681245 | Jun 10, 2009 | Jun 10, 2009 | Holley Oil Company, LLC | Pivonka Unit #1H | 9,500 | 05130383 |
| 681245Amendment | Jun 10, 2009 | Jun 10, 2009 | Holley Oil Company, LLC | Pivonka Unit #1H | 9,500 | 05130383 |
| 654439Amendment | Apr 3, 2009 | Apr 3, 2009 | Apache Corporation | Elsik #4H | 12,000 | 05133638 |
| 672623 | Mar 23, 2009 | Mar 23, 2009 | Sheridan Production Company, LLC | Porter #1 | 8,200 | 05132785 |
| 678475 | Feb 23, 2009 | Feb 23, 2009 | Enervest Operating, L.L.C. | Leachman-Robinson Unit #1REH | 12,000 | 05133357 |
| 678207 | Feb 6, 2009 | Feb 6, 2009 | Enervest Operating, L.L.C. | J. K. Lassig Unit #1REH | 11,500 | 05133321 |
| 678028 | Feb 3, 2009 | Feb 3, 2009 | Enervest Operating, L.L.C. | Hoelscher, Alice B. #1REH | 11,500 | 05133326 |
| 676198 | Dec 16, 2008 | Dec 16, 2008 | Argent Petroleum Corporation | Curtis Oil Unit #1 | 8,267 | 05132743 |
| 674417 | Dec 4, 2008 | Dec 4, 2008 | Robert T. Epperson Prod Co, LLC | Neal #1 | 4,500 | 05132299 |
| 674353 | Nov 7, 2008 | Nov 7, 2008 | Bruington Operating, L.L.C. | O.D.C. #4 | 11,000 | 05132301 |
| 673750 | Oct 25, 2008 | Oct 25, 2008 | Crawford Hughes Operating Co. | Moore, Jesse #10 | 12,450 | 05133414 |
| 663749Amendment | Oct 21, 2008 | Oct 21, 2008 | Evolution Operating Co., Inc. | Urbanosky-Bryant #3REH | 10,000 | 05132263 |
| 663874 | Oct 17, 2008 | Oct 17, 2008 | Apache Corporation | Warren Thomas Unit #1 | 8,356 | 05132289 |
| 672675 | Oct 15, 2008 | Oct 15, 2008 | Sheridan Production Company, LLC | Owens #1 | 8,200 | 05132582 |
| 667378Amendment | Oct 4, 2008 | Oct 4, 2008 | Williams, Clayton Energy, Inc. | Sunny Unit #1 | 21,000 | 05133651 |
| 670226 | Sep 18, 2008 | Sep 18, 2008 | Evolution Operating Co., Inc. | Jones, J. J. #2REH | 11,000 | 05131044 |
| 670214 | Sep 18, 2008 | Sep 18, 2008 | Evolution Operating Co., Inc. | Hilton-Yegua #1RE | 10,950 | 05133292 |
| 670214Amendment | Sep 18, 2008 | Sep 18, 2008 | Evolution Operating Co., Inc. | Hilton-Yegua #1REH | 11,000 | 05133292 |
| 666753 | Aug 19, 2008 | Aug 19, 2008 | Sheridan Production Company, LLC | Cook, Walter W. Unit #1H | 8,600 | 05130613 |
| 666753Amendment | Aug 19, 2008 | Aug 19, 2008 | Sheridan Production Company, LLC | Cook, Walter W. Unit #1H | 8,600 | 05130613 |
| 665442 | Aug 12, 2008 | Aug 12, 2008 | Williams, Clayton Energy, Inc. | Drgac-Loehr Unit #2H | 6,900 | 05133650 |
| 667378 | Aug 9, 2008 | Aug 9, 2008 | Williams, Clayton Energy, Inc. | Sunny Unit #1 | 8,000 | 05133651 |
| 665527 | Jul 22, 2008 | Jul 22, 2008 | Anadarko E&P Company LP | Trcalek, Ben #1REH | 9,127 | 05133068 |
| 632801Amendment | Jul 18, 2008 | Jul 18, 2008 | Williams, Clayton Energy, Inc. | Davis, Viola OL Unit #1H | 7,400 | 05133630 |
| 663491 | Jul 17, 2008 | Jul 17, 2008 | Sheridan Production Company, LLC | Sebesta #1 | 9,000 | 05132717 |
| 665287 | Jul 14, 2008 | Jul 14, 2008 | Apache Corporation | Reveille #7H | 13,500 | 05133649 |