| 626697 | Sep 28, 2006 | Sep 28, 2006 | Hep Oil Company, Ltd. | Crammer-Logan Waterflood Unit #1306 | 5,200 | 23738988 |
| 626288 | Sep 28, 2006 | Sep 28, 2006 | Interstate Explorations LLC | Scott #2 | 6,500 | 23702943 |
| 626286 | Sep 28, 2006 | Sep 28, 2006 | Interstate Explorations LLC | Scott #1 | 6,500 | 23702942 |
| 626493 | Sep 27, 2006 | Sep 27, 2006 | Dry Fork Production Co., LLC | Sonic Lease #1 | 4,500 | 23738987 |
| 626035 | Sep 25, 2006 | Sep 25, 2006 | EOG Resources, Inc. | Jackson Heirs #1HH | 6,200 | 23738981 |
| 626254 | Sep 21, 2006 | Sep 21, 2006 | Pogo Producing Company | Billie Yates #1HH | 6,700 | 23738982 |
| 626039 | Sep 19, 2006 | Sep 19, 2006 | EOG Resources, Inc. | Rumage #1HH | 6,200 | 23738979 |
| 626015 | Sep 18, 2006 | Sep 18, 2006 | EOG Resources, Inc. | Fox "a" Unit #1HH | 6,500 | 23738980 |
| 625981 | Sep 18, 2006 | Sep 18, 2006 | Dte Gas Resources, Inc. | Henson 260 #7 | 6,800 | 23738978 |
| 625980 | Sep 18, 2006 | Sep 18, 2006 | Dte Gas Resources, Inc. | Henson 260 #6HH | 6,800 | 23738977 |
| 625979 | Sep 18, 2006 | Sep 18, 2006 | Dte Gas Resources, Inc. | Henson 260 #5HH | 6,800 | 23738976 |
| 625329 | Sep 8, 2006 | Sep 8, 2006 | Hep Oil Company, Ltd. | Peek, Emma #8 | 5,005 | 23738869 |
| 625141 | Sep 5, 2006 | Sep 5, 2006 | Best Petroleum Explorations, Inc | Hill #1 | 7,000 | 23732317 |
| 625309 | Sep 1, 2006 | Sep 1, 2006 | Dte Gas Resources, Inc. | Henson 260 #3HH | 6,800 | 23738975 |
| 624344 | Sep 1, 2006 | Sep 1, 2006 | Spiller Oil & Gas Company | Brumbelow Unit #1 | 2,100 | 23738966 |
| 624903 | Aug 25, 2006 | Aug 25, 2006 | Dry Fork Production Co., LLC | Lindsey #2 | 3,800 | 23738974 |
| 624702 | Aug 24, 2006 | Aug 24, 2006 | EOG Resources, Inc. | Terry SWD #1 | 9,500 | 23738971 |
| 624843 | Aug 23, 2006 | Aug 23, 2006 | EOG Resources, Inc. | Parris Unit #2HH | 6,200 | 23738973 |
| 624777 | Aug 23, 2006 | Aug 23, 2006 | Borderline Operating Corp. | Jackson Trust "C" #2 | 3,400 | 23738972 |
| 624712 | Aug 21, 2006 | Aug 21, 2006 | Dte Gas Resources, Inc. | Henson 260 #2HH | 6,800 | 23738970 |
| 624521 | Aug 21, 2006 | Aug 21, 2006 | Pogo Producing Company | Billie Yates #2 | 7,500 | 23738968 |
| 624521Amendment | Aug 21, 2006 | Aug 21, 2006 | Pogo Producing Company | Yates, Billie #2H | 6,700 | 23738968 |
| 624521Amendment | Aug 21, 2006 | Aug 21, 2006 | XTO Energy Inc. | Billie Yates #2HH | 8,550 | 23738968 |
| 624540 | Aug 17, 2006 | Aug 17, 2006 | Dte Gas Resources, Inc. | Payne 1563 #3HH | 6,800 | 23738969 |
| 624398 | Aug 15, 2006 | Aug 15, 2006 | Best Petroleum Explorations, Inc | Easter #1 | 7,000 | 23738967 |
| 624076 | Aug 9, 2006 | Aug 9, 2006 | EOG Resources, Inc. | Big Creek "a" Unit #2HH | 6,300 | 23738965 |
| 623670 | Aug 8, 2006 | Aug 8, 2006 | Century Petroleum, Inc. | Rummage C #1 | 7,000 | 23702032 |
| 623026 | Jul 31, 2006 | Jul 31, 2006 | Barger Petroleum Co. | Blount #35 | 500 | 23738964 |
| 610052Amendment | Jul 28, 2006 | Jul 28, 2006 | EOG Resources, Inc. | Little Creek "a" Unit #1HH | 8,200 | 23738905 |
| 623323 | Jul 27, 2006 | Jul 27, 2006 | Dte Gas Resources, Inc. | N. Gragg 1087 #1 | 6,700 | 23738963 |
| 622869 | Jul 19, 2006 | Jul 19, 2006 | Dte Gas Resources, Inc. | Payne 1563 #2 | 6,800 | 23738962 |
| 622167 | Jul 13, 2006 | Jul 13, 2006 | Dte Gas Resources, Inc. | Hughes, J. 251 #7 | 6,700 | 23738959 |
| 622165 | Jul 13, 2006 | Jul 13, 2006 | Dte Gas Resources, Inc. | Hughes, J. 251 #6 | 6,700 | 23738958 |
| 622186 | Jul 11, 2006 | Jul 11, 2006 | Dte Gas Resources, Inc. | Robinson 494 #2 HH | 6,800 | 23738961 |
| 622091 | Jul 6, 2006 | Jul 6, 2006 | Dte Gas Resources, Inc. | Payne 1563 #1 HH | 6,800 | 23738957 |
| 622085 | Jul 6, 2006 | Jul 6, 2006 | Bommer Engineering Co. | Joe Shown Trust Unit #1 | 5,300 | 23738956 |
| 622085Amendment | Jul 6, 2006 | Jul 6, 2006 | Bommer Engineering Co. | Joe Shown Trust Unit #1 | 5,999 | 23738956 |
| 621803 | Jun 29, 2006 | Jun 29, 2006 | WG Operating, Inc. | Tarrant #D 10 | 6,000 | 23738955 |
| 621387 | Jun 27, 2006 | Jun 27, 2006 | Shelley, Richard W | Wit's End #1 | 7,100 | 23738954 |
| 621472 | Jun 23, 2006 | Jun 23, 2006 | Munson, David M. Inc. | J. B. Whitaker #1 | 6,000 | 23702075 |
| 621036 | Jun 23, 2006 | Jun 23, 2006 | Lufkin Production Company Inc. | Snedeker #2 | 1,000 | 23738949 |
| 621292 | Jun 20, 2006 | Jun 20, 2006 | Dte Gas Resources, Inc. | J Hughes 251 CC #5 | 6,700 | 23738953 |
| 621287 | Jun 20, 2006 | Jun 20, 2006 | Dte Gas Resources, Inc. | J Hughes 251 CC #4 | 6,700 | 23738952 |
| 621237 | Jun 20, 2006 | Jun 20, 2006 | Dte Gas Resources, Inc. | Robinson 494 CC #1HH | 6,800 | 23738950 |
| 621238 | Jun 19, 2006 | Jun 19, 2006 | Dte Gas Resources, Inc. | Kuykendall 326 #1HH | 6,800 | 23738951 |
| 620335 | Jun 2, 2006 | Jun 2, 2006 | Dte Gas Resources, Inc. | J. Hughes 251 #3 | 6,700 | 23738948 |
| 620026 | May 26, 2006 | May 26, 2006 | Dte Gas Resources, Inc. | Eubanks 1073 #1 | 7,000 | 23738947 |
| 619921 | May 26, 2006 | May 26, 2006 | Hep Oil Company, Ltd. | Richards, Frank #1 | 5,050 | 23738238 |
| 618808 | May 15, 2006 | May 15, 2006 | Rogers Drilling Co. | Texaco-Bloodworth #1 | 3,900 | 23708893 |
| 619205 | May 12, 2006 | May 12, 2006 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #I 12 | 5,000 | 23738946 |
| 619204 | May 12, 2006 | May 12, 2006 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #I 13 | 5,000 | 23738945 |
| 619203 | May 12, 2006 | May 12, 2006 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #I 11 | 5,000 | 23738944 |
| 618864 | May 8, 2006 | May 8, 2006 | Dte Gas Resources, Inc. | Henson 260 #1 | 6,800 | 23738943 |
| 618478 | May 1, 2006 | May 1, 2006 | Dte Gas Resources, Inc. | Burbidge 68 #1 | 6,700 | 23738942 |
| 618253 | Apr 28, 2006 | Apr 28, 2006 | Dte Gas Resources, Inc. | Gardner 233 #3V | 6,700 | 23738941 |
| 617638 | Apr 28, 2006 | Apr 28, 2006 | Catlin, Carl | Maxwell, Virgil E. #2 | 5,000 | 23738940 |
| 617748 | Apr 18, 2006 | Apr 18, 2006 | Upham Oil & Gas Company | Hardy, Beatrice #3 | 6,800 | 23738939 |
| 617266 | Apr 10, 2006 | Apr 10, 2006 | EOG Resources, Inc. | Shawver Unit #1HH | 6,200 | 23738938 |
| 617266Amendment | Apr 10, 2006 | Apr 10, 2006 | EOG Resources, Inc. | Shawver Unit #1HH | 6,200 | 23738938 |
| 617018 | Apr 6, 2006 | Apr 6, 2006 | Lewis Petro Properties, Inc. | Voyles 461 #1 | 6,000 | 23738937 |
| 616974 | Apr 4, 2006 | Apr 4, 2006 | Lewis Petro Properties, Inc. | Voyles 110 #1 | 6,000 | 23738936 |
| 616887 | Apr 3, 2006 | Apr 3, 2006 | Century Petroleum, Inc. | Dickenson #1 | 7,000 | 23738935 |
| 616168 | Mar 27, 2006 | Mar 27, 2006 | Pitcock, Inc. | Clayton-Price "A" #2 | 5,600 | 23738934 |
| 616296 | Mar 23, 2006 | Mar 23, 2006 | Dte Gas Resources, Inc. | Kuykendall, J. 326 #2 | 6,500 | 23738933 |
| 616296Amendment | Mar 23, 2006 | Mar 23, 2006 | Dte Gas Resources, Inc. | Kuykendall, J. 326 #2 | 6,650 | 23738933 |
| 615738 | Mar 23, 2006 | Mar 23, 2006 | Cumming Company, Inc. The | Boley #1 | 5,524 | 23738373 |
| 615936 | Mar 16, 2006 | Mar 16, 2006 | Bettis, Boyle & Stovall | Teague "220" #5 | 5,100 | 23738932 |
| 615863 | Mar 15, 2006 | Mar 15, 2006 | Pop Operating Company | Gillespie Farmout "B" #1 | 4,900 | 23738931 |
| 614978 | Mar 6, 2006 | Mar 6, 2006 | EOG Resources, Inc. | Wimberly #1HH | 6,600 | 23738930 |
| 614924 | Mar 6, 2006 | Mar 6, 2006 | Gonzenbach, Glen D | Steward #1 | 6,500 | 23738929 |
| 614956 | Feb 28, 2006 | Feb 28, 2006 | Four Sevens Operating Co., Ltd. | Coca Cola A #1 | 6,500 | 23738928 |
| 614906 | Feb 27, 2006 | Feb 27, 2006 | Dte Gas Resources, Inc. | Crainshaw 128 #2 | 6,500 | 23738927 |
| 614404 | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | Dixon a Unit #1HH | 6,600 | 23738926 |
| 614404Amendment | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | Dixon a Unit #1HH | 6,600 | 23738926 |
| 614554 | Feb 21, 2006 | Feb 21, 2006 | Four Sevens Operating Co., Ltd. | Coca Cola B #3 | 6,500 | 23738925 |
| 613968 | Feb 16, 2006 | Feb 16, 2006 | Century Petroleum, Inc. | Johnson #1 | 7,000 | 23738924 |
| 613310 | Feb 6, 2006 | Feb 6, 2006 | EOG Resources, Inc. | Richards Ranch #5HH | 6,100 | 23738922 |
| 613310Amendment | Feb 6, 2006 | Feb 6, 2006 | EOG Resources, Inc. | Richards Ranch #5HH | 6,100 | 23738922 |
| 613307 | Feb 6, 2006 | Feb 6, 2006 | EOG Resources, Inc. | Richards Ranch #4HH | 6,000 | 23738923 |
| 613321 | Feb 1, 2006 | Feb 1, 2006 | Dte Gas Resources, Inc. | Crainshaw 128 #1 | 6,500 | 23738921 |
| 613040 | Jan 31, 2006 | Jan 31, 2006 | Lynn Creek Oil Company | Roney, J. T. #33 | 450 | 23738920 |
| 611892 | Jan 11, 2006 | Jan 11, 2006 | EOG Resources, Inc. | Johnston a Unit #1HH | 6,400 | 23738917 |
| 611892Amendment | Jan 11, 2006 | Jan 11, 2006 | EOG Resources, Inc. | Johnston a Unit #1HH | 6,400 | 23738917 |
| 611975 | Jan 6, 2006 | Jan 6, 2006 | Dte Gas Resources, Inc. | Mepprr 423 #1HH | 6,500 | 23738918 |
| 611767 | Jan 3, 2006 | Jan 3, 2006 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #B 4 | 5,000 | 23738916 |
| 611767Amendment | Jan 3, 2006 | Jan 3, 2006 | Worsham-Steed Gas Storage, L.P. | Worsham Steed Unit #B 4 | 5,000 | 23738916 |
| 611336 | Dec 21, 2005 | Dec 21, 2005 | Willowbend Investments, Inc. | Henderson "C" #1 | 6,200 | 23738915 |
| 611157 | Dec 20, 2005 | Dec 20, 2005 | Pitcock, Inc. | Ham-Lane #3 | 5,300 | 23738914 |
| 610737 | Dec 8, 2005 | Dec 8, 2005 | Best Petroleum Explorations,inc. | Happy C Ranch #1 | 8,000 | 23738913 |
| 610378 | Dec 6, 2005 | Dec 6, 2005 | EOG Resources, Inc. | Parris Unit #1HH | 6,400 | 23738912 |
| 610321 | Dec 2, 2005 | Dec 2, 2005 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #C 4 | 5,000 | 23738911 |
| 610321Amendment | Dec 2, 2005 | Dec 2, 2005 | Worsham-Steed Gas Storage, L.P. | Worsham Steed Unit #C 4 | 5,000 | 23738911 |
| 610319 | Dec 2, 2005 | Dec 2, 2005 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #A 1 | 5,000 | 23738909 |
| 610319Amendment | Dec 2, 2005 | Dec 2, 2005 | Worsham-Steed Gas Storage, L.P. | Worsham Steed Unit #A 1 | 5,000 | 23738909 |
| 610320 | Dec 1, 2005 | Dec 1, 2005 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #B 1 | 5,000 | 23738910 |
| 610318 | Dec 1, 2005 | Dec 1, 2005 | Falcon Gas Storage Co., Inc. | Worsham Steed Unit #D 1 | 5,000 | 23738908 |
| 610234 | Nov 30, 2005 | Nov 30, 2005 | Titan Energy, Inc. | Hicks #1 | 6,500 | 23738907 |
| 610013 | Nov 30, 2005 | Nov 30, 2005 | Dry Fork Production Co., LLC | Lindsey #1 | 3,500 | 23738902 |
| 610132 | Nov 29, 2005 | Nov 29, 2005 | Tracker Mineral | Deweber #6 | 2,000 | 23701767 |
| 610094 | Nov 29, 2005 | Nov 29, 2005 | Dte Gas Resources, Inc. | Walker 2094 #1 | 6,500 | 23738906 |