| 730757 | Jan 12, 2012 | Jan 12, 2012 | Enco Exploration Company | Brown #12 | 4,700 | 02533808 |
| 730745 | Jan 12, 2012 | Jan 12, 2012 | Enco Exploration Company | Hughes #2 | 4,500 | 02533807 |
| 730397 | Dec 29, 2011 | Dec 29, 2011 | Enco Exploration Company | Salmon #1 | 4,500 | 02533805 |
| 730378 | Dec 29, 2011 | Dec 29, 2011 | Enco Exploration Company | Hughes #1 | 5,500 | 02533804 |
| 729760 | Dec 20, 2011 | Dec 20, 2011 | Enco Exploration Company | Brown #8 | 5,000 | 02533802 |
| 729764 | Dec 16, 2011 | Dec 16, 2011 | Enco Exploration Company | Brown #9 | 4,700 | 02533803 |
| 729739 | Dec 16, 2011 | Dec 16, 2011 | Enco Exploration Company | Koenig #3 | 5,500 | 02533801 |
| 729730 | Dec 16, 2011 | Dec 16, 2011 | Pioneer Natural Res. USA, Inc. | Schroeder GU #5H | 14,132 | 02533354 |
| 729730Amendment | Dec 16, 2011 | Dec 16, 2011 | Pioneer Natural Res. USA, Inc. | Schroeder GU #5 | 14,132 | 02533354 |
| 729469 | Dec 9, 2011 | Dec 9, 2011 | Anderson Oil Ltd. | O'Brien #3 | 5,500 | 02533800 |
| 729339 | Dec 8, 2011 | Dec 8, 2011 | Zachry Exploration, LLC | Bear Creek Ranch #1 | 5,000 | 02533799 |
| 729315 | Dec 7, 2011 | Dec 7, 2011 | Mego Resources, LLC | Milagros Ranch #4 | 5,200 | 02533798 |
| 728936 | Nov 30, 2011 | Nov 30, 2011 | Pioneer Natural Res. USA, Inc. | Postel 01 #01HH | 21,000 | 02533797 |
| 728455 | Nov 21, 2011 | Nov 21, 2011 | Poco LLC | Whiddon-Seger Gas Unit #1 | 7,500 | 02532263 |
| 727871 | Nov 17, 2011 | Nov 17, 2011 | Choice Exploration, Inc. | Southern States #1 | 6,700 | 02533796 |
| 727637 | Nov 9, 2011 | Nov 9, 2011 | Pioneer Natural Res. USA, Inc. | Stewart 01 #01HH | 21,000 | 02533795 |
| 727151 | Nov 1, 2011 | Nov 1, 2011 | Burlington Resources O & G Co LP | Karen Kennedy Unit A #1H | 13,500 | 02533794 |
| 726439 | Oct 27, 2011 | Oct 27, 2011 | Sydson Energy, Inc. | Fudge #1 | 3,700 | 02532643 |
| 725986 | Oct 21, 2011 | Oct 21, 2011 | Everest Resource Company | Donahue #1 | 5,000 | 02533793 |
| 725986Amendment | Oct 21, 2011 | Oct 21, 2011 | Millennium Exploration Co. LLC | Donahue #1 | 5,000 | 02533793 |
| 725389 | Oct 13, 2011 | Oct 13, 2011 | Dirks Petroleum Company | Brooks Trust Unit #2 #3 | 8,500 | 02533099 |
| 725389Amendment | Oct 13, 2011 | Oct 13, 2011 | Dirks Petroleum Company | Brooks Trust Unit #2 #3 | 8,500 | 02533099 |
| 725166 | Sep 29, 2011 | Sep 29, 2011 | Welder Exploration & Prod., Inc. | Edler, J.B. #38 | 6,000 | 02533792 |
| 725166Amendment | Sep 29, 2011 | Sep 29, 2011 | Welder Exploration & Prod., Inc. | Edler, J.B. #38 | 6,000 | 02533792 |
| 724525 | Sep 22, 2011 | Sep 22, 2011 | Pioneer Natural Res. USA, Inc. | Gill 01 #01HH | 21,000 | 02533791 |
| 724380 | Sep 20, 2011 | Sep 20, 2011 | T - C Oil Company | O'Brien -C- Unit #1 | 3,889 | 02533699 |
| 724342 | Sep 20, 2011 | Sep 20, 2011 | Sydson Energy, Inc. | Magnus Beck #1 | 3,715 | 02533594 |
| 723878 | Sep 19, 2011 | Sep 19, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #65 | 4,700 | 02533732 |
| 723899 | Sep 13, 2011 | Sep 13, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #72 | 5,000 | 02533789 |
| 723899Amendment | Sep 13, 2011 | Sep 13, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #72 | 5,000 | 02533789 |
| 723897 | Sep 13, 2011 | Sep 13, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #71 | 5,000 | 02533790 |
| 723897Amendment | Sep 13, 2011 | Sep 13, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #71 | 5,000 | 02533790 |
| 723487 | Sep 6, 2011 | Sep 6, 2011 | Heckmann Water Resources(cvr)inc | McDonald SWD #1 | 8,400 | 02533788 |
| 723375 | Sep 2, 2011 | Sep 2, 2011 | Sydson Energy, Inc. | Mary R. Fudge #2 | 3,700 | 02532471 |
| 723163 | Aug 31, 2011 | Aug 31, 2011 | Sydson Energy, Inc. | Campbell #1 | 3,700 | 02532493 |
| 723033 | Aug 29, 2011 | Aug 29, 2011 | Esenjay Operating, Inc. | Dougherty #1 | 4,500 | 02533786 |
| 723033Amendment | Aug 29, 2011 | Aug 29, 2011 | Esenjay Operating, Inc. | Dougherty #1 | 4,500 | 02533786 |
| 723000 | Aug 29, 2011 | Aug 29, 2011 | Anderson Oil Ltd. | Eberstadt #18 | 3,600 | 02533787 |
| 722648 | Aug 26, 2011 | Aug 26, 2011 | Zachry Exploration, LLC | Finger et al Unit #1 | 4,700 | 02533785 |
| 722236 | Aug 23, 2011 | Aug 23, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #70 | 5,000 | 02533783 |
| 722236Amendment | Aug 23, 2011 | Aug 23, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #70 | 5,000 | 02533783 |
| 722234 | Aug 23, 2011 | Aug 23, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #69 | 5,000 | 02533782 |
| 722234Amendment | Aug 23, 2011 | Aug 23, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #69 | 5,000 | 02533782 |
| 722404 | Aug 19, 2011 | Aug 19, 2011 | Pioneer Natural Res. USA, Inc. | Wintfred 01 #01HH | 21,000 | 02533784 |
| 722464 | Aug 18, 2011 | Aug 18, 2011 | T - C Oil Company | Malone -A- #1 | 4,410 | 02533623 |
| 722080 | Aug 16, 2011 | Aug 16, 2011 | Mego Resources, LLC | Sasser #6 | 4,966 | 02520089 |
| 722294 | Aug 15, 2011 | Aug 15, 2011 | Esenjay Operating, Inc. | Hughes #2 | 4,200 | 02533781 |
| 721527 | Aug 5, 2011 | Aug 5, 2011 | T - C Oil Company | Milagros Ranch -B- #1 | 4,300 | 02533672 |
| 721010 | Aug 1, 2011 | Aug 1, 2011 | Welder Exploration & Prod., Inc. | Wilhite #2 | 6,000 | 02533780 |
| 721010Amendment | Aug 1, 2011 | Aug 1, 2011 | Welder Exploration & Prod., Inc. | Wilhite #2 | 6,000 | 02533780 |
| 720697 | Jul 25, 2011 | Jul 25, 2011 | Enco Exploration Company | Brown #6 | 5,200 | 02533779 |
| 719648 | Jul 8, 2011 | Jul 8, 2011 | Enco Exploration Company | Byars-Seale Unit #1 | 5,500 | 02533777 |
| 719618 | Jul 7, 2011 | Jul 7, 2011 | Enco Exploration Company | Koenig #2 | 4,500 | 02533776 |
| 719444 | Jul 1, 2011 | Jul 1, 2011 | Pioneer Natural Res. USA, Inc. | Mixon 01 #01HH | 21,000 | 02533775 |
| 718999 | Jun 28, 2011 | Jun 28, 2011 | Anderson Oil Ltd. | Gardner #1 | 6,000 | 02533774 |
| 719062 | Jun 25, 2011 | Jun 25, 2011 | Excellong, Inc. | Ray #1 | 8,000 | 02533773 |
| 718888 | Jun 23, 2011 | Jun 23, 2011 | Esenjay Operating, Inc. | Hughes #1 | 4,200 | 02533772 |
| 718298 | Jun 20, 2011 | Jun 20, 2011 | Welder Exploration & Prod., Inc. | Evans #2 | 5,000 | 02533771 |
| 718129 | Jun 16, 2011 | Jun 16, 2011 | Welder Exploration & Prod., Inc. | Edler, J.B. #26 | 5,000 | 02533501 |
| 718017 | Jun 16, 2011 | Jun 16, 2011 | Sydson Energy, Inc. | Boothe Unit #1 | 3,700 | 02533725 |
| 717422 | Jun 3, 2011 | Jun 3, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #68 | 5,000 | 02533770 |
| 717422Amendment | Jun 3, 2011 | Jun 3, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #68 | 5,000 | 02533770 |
| 717419 | Jun 3, 2011 | Jun 3, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #67 | 5,000 | 02533769 |
| 717419Amendment | Jun 3, 2011 | Jun 3, 2011 | Welder Exploration & Prod., Inc. | Davis, Nona Berry #67 | 5,000 | 02533769 |
| 716586 | Jun 2, 2011 | Jun 2, 2011 | Spindletop Drilling Co. | James Agnes Hynes #30R | 3,500 | 02533766 |
| 716582 | Jun 2, 2011 | Jun 2, 2011 | Spindletop Drilling Co. | James Agnes Hynes #29R | 3,500 | 02533765 |
| 716672 | May 24, 2011 | May 24, 2011 | Welder Exploration & Prod., Inc. | Diebel #1 | 6,000 | 02533768 |
| 716644 | May 24, 2011 | May 24, 2011 | Choice Exploration, Inc. | Carl #1 | 3,900 | 02533767 |
| 716253 | May 20, 2011 | May 20, 2011 | Welder Exploration & Prod., Inc. | Evans #1 | 6,000 | 02533764 |
| 715975 | May 17, 2011 | May 17, 2011 | Welder Exploration & Prod., Inc. | Sylva #1 | 6,000 | 02533763 |
| 715975Amendment | May 17, 2011 | May 17, 2011 | Welder Exploration & Prod., Inc. | Sylva #1 | 6,000 | 02533763 |
| 715098 | May 4, 2011 | May 4, 2011 | Enco Exploration Company | Long #16 | 4,000 | 02533762 |
| 715036 | May 3, 2011 | May 3, 2011 | Enco Exploration Company | Malone #15 | 4,500 | 02533761 |
| 715024 | May 3, 2011 | May 3, 2011 | Enco Exploration Company | Malone #14 | 4,000 | 02533760 |
| 714863 | Apr 29, 2011 | Apr 29, 2011 | Enco Exploration Company | Seale #5 | 4,500 | 02533759 |
| 714860 | Apr 29, 2011 | Apr 29, 2011 | Enco Exploration Company | Koenig #1 | 4,500 | 02533757 |
| 714859 | Apr 29, 2011 | Apr 29, 2011 | Enco Exploration Company | Seale #4 | 5,500 | 02533758 |
| 714829 | Apr 28, 2011 | Apr 28, 2011 | Mego Resources, LLC | Sasser #5 | 5,400 | 02533756 |
| 711836 | Mar 23, 2011 | Mar 23, 2011 | Enco Exploration Company | Collier #16 | 5,000 | 02533755 |
| 711448 | Mar 8, 2011 | Mar 8, 2011 | T - C Oil Company | O'Brien - Morris Unit #1 | 3,760 | 02533631 |
| 710405 | Feb 24, 2011 | Feb 24, 2011 | Inland Ocean, Inc. | Mutchler-Roth Unit #1 | 4,109 | 02532729 |
| 710806 | Feb 23, 2011 | Feb 23, 2011 | Anderson Oil Ltd. | Eberstadt #17 | 3,800 | 02533754 |
| 710806Amendment | Feb 23, 2011 | Feb 23, 2011 | Anderson Oil Ltd. | Eberstadt #17 | 3,800 | 02533754 |
| 710806Amendment | Feb 23, 2011 | Feb 23, 2011 | Anderson Oil Ltd. | Eberstadt #17 | 3,800 | 02533754 |
| 709929 | Feb 18, 2011 | Feb 18, 2011 | Choice Exploration, Inc. | Anderson #1 | 4,700 | 02533753 |
| 709705 | Feb 9, 2011 | Feb 9, 2011 | Ellsworth, H. P. O&G Properties | Page #3 | 4,700 | 02532077 |
| 708644 | Jan 20, 2011 | Jan 20, 2011 | Talisman Energy USA Inc. | Johnston Gas Unit 5 #1H | 13,500 | 02533752 |
| 708644Amendment | Jan 20, 2011 | Jan 20, 2011 | Talisman Energy USA Inc. | Johnston Gas Unit 5 #1H | 13,500 | 02533752 |
| 707419 | Jan 4, 2011 | Jan 4, 2011 | Enco Exploration Company | Collier #15 | 5,000 | 02533749 |
| 707376 | Jan 3, 2011 | Jan 3, 2011 | Enco Exploration Company | Bowden #3 | 5,000 | 02533751 |
| 707375 | Jan 3, 2011 | Jan 3, 2011 | Enco Exploration Company | Bowden #2 | 5,000 | 02533750 |
| 707377 | Dec 30, 2010 | Dec 30, 2010 | Enco Exploration Company | Brown #5 | 5,000 | 02533748 |
| 707236 | Dec 20, 2010 | Dec 20, 2010 | Burlington Resources O & G Co LP | Rancho Salado East Unit A #1H | 14,000 | 02533747 |
| 707236Amendment | Dec 20, 2010 | Dec 20, 2010 | Burlington Resources O & G Co LP | Rancho Salado East Unit A #1H | 14,000 | 02533747 |
| 706157 | Dec 8, 2010 | Dec 8, 2010 | Sydson Energy, Inc. | Walton #1 | 3,700 | 02533746 |
| 706157Amendment | Dec 8, 2010 | Dec 8, 2010 | Sydson Energy, Inc. | Walton #1 | 3,700 | 02533746 |
| 706071 | Dec 6, 2010 | Dec 6, 2010 | Enco Exploration Company | Collier #11 | 5,000 | 02533745 |
| 705959 | Nov 30, 2010 | Nov 30, 2010 | Ellsworth, H. P. O&G Properties | Page Heirs - Dewitt #1 | 3,750 | 02533744 |
| 705959Amendment | Nov 30, 2010 | Nov 30, 2010 | Ellsworth, H. P. O&G Properties | Page #1 | 3,750 | 02533744 |
| 705959Amendment | Nov 30, 2010 | Nov 30, 2010 | Ellsworth, H. P. O&G Properties | Page #1 | 4,100 | 02533744 |