| 556909Amendment | Jun 17, 2005 | Jun 17, 2005 | Abraxas Petroleum Corporation | Williams Oil Unit #1 | 10,868 | 22731706 |
| 601601 | Jun 14, 2005 | Jun 14, 2005 | Chaparral Energy, L.L.C. | Jones, Percy #50 | 3,500 | 22735955 |
| 601606 | Jun 13, 2005 | Jun 13, 2005 | Chaparral Energy, L.L.C. | Jones, Percy #46 | 3,500 | 22735964 |
| 601605 | Jun 13, 2005 | Jun 13, 2005 | Chaparral Energy, L.L.C. | Jones, Percy #47 | 3,500 | 22735958 |
| 601603 | Jun 13, 2005 | Jun 13, 2005 | Chaparral Energy, L.L.C. | Jones, Percy #48 | 3,500 | 22735956 |
| 601602 | Jun 13, 2005 | Jun 13, 2005 | Chaparral Energy, L.L.C. | Jones, Percy #49 | 3,500 | 22735959 |
| 601599 | Jun 9, 2005 | Jun 9, 2005 | Chaparral Energy, L.L.C. | Jones, Percy "B" #11 | 3,500 | 22735957 |
| 601619 | Jun 7, 2005 | Jun 7, 2005 | Chaparral Energy, L.L.C. | Jones, Percy "A" #12 | 3,500 | 22735963 |
| 601615 | Jun 6, 2005 | Jun 6, 2005 | Chaparral Energy, L.L.C. | Jones, Percy "A" #11 | 3,500 | 22735962 |
| 601614 | Jun 6, 2005 | Jun 6, 2005 | Chaparral Energy, L.L.C. | Percy Jones 'A' #10 | 3,500 | 22735960 |
| 601607 | Jun 6, 2005 | Jun 6, 2005 | Chaparral Energy, L.L.C. | Percy Jones 'A' #9 | 3,500 | 22735961 |
| 601607Amendment | Jun 6, 2005 | Jun 6, 2005 | Chaparral Energy, L.L.C. | Jones, Percy 'A' #9 | 4,001 | 22735961 |
| 601545 | Jun 3, 2005 | Jun 3, 2005 | Finley Resources, Inc. | Wolf, Vernon #1 | 7,700 | 22735954 |
| 601545Amendment | Jun 3, 2005 | Jun 3, 2005 | Finley Resources, Inc. | Wolf, Vernon #1 | 7,700 | 22735954 |
| 560921 | Jun 3, 2005 | Jun 3, 2005 | Excel Energy Co. | T. L. & M. Co. -B- #33 | 3,200 | 22735945 |
| 601283 | May 27, 2005 | May 27, 2005 | Chaparral Energy, L.L.C. | Percy Jones "B" #13 | 3,500 | 22735953 |
| 601279 | May 27, 2005 | May 27, 2005 | Chaparral Energy, L.L.C. | Percy Jones "B" #12 | 3,500 | 22735952 |
| 601039 | May 24, 2005 | May 24, 2005 | Merit Energy Company | B.S. TXL 'D' #3304 | 4,300 | 22735951 |
| 601042 | May 23, 2005 | May 23, 2005 | Merit Energy Company | B. S. TXL 'D' #3303 | 4,300 | 22735950 |
| 601002 | May 20, 2005 | May 20, 2005 | Enervest Operating, L.L.C. | Dodge, G. M. #96 | 2,950 | 22735949 |
| 600775 | May 17, 2005 | May 17, 2005 | Enervest Operating, L.L.C. | G M Dodge #97 | 2,950 | 22735948 |
| 600555 | May 11, 2005 | May 11, 2005 | Sharp Image Energy, Inc. | Hardy 33 #1 | 8,500 | 22735947 |
| 600141 | May 6, 2005 | May 6, 2005 | Thunderbolt Petroleum Co. LLC | McAllister '48' #2 | 5,700 | 22735435 |
| 559713 | Apr 25, 2005 | Apr 25, 2005 | COG Operating LLC | Anderson #1 | 10,000 | 22735944 |
| 560006 | Apr 5, 2005 | Apr 5, 2005 | Barrett Brothers Oil & Gas, Inc. | Read #1 | 5,100 | 22734757 |
| 559386 | Mar 23, 2005 | Mar 23, 2005 | Apache Corporation | East Vealmoor Disposal Unit NO 1 #2 | 10,000 | 22730394 |
| 559384 | Mar 23, 2005 | Mar 23, 2005 | Apache Corporation | East Vealmoor Disposal Unit NO 2 #1 | 10,000 | 22704381 |
| 559174 | Mar 17, 2005 | Mar 17, 2005 | Whiting Oil and Gas Corporation | Long #1403 | 6,000 | 22735943 |
| 558888 | Mar 16, 2005 | Mar 16, 2005 | Thompson, J. Cleo | Thomas #1 | 6,000 | 22735942 |
| 558972 | Mar 15, 2005 | Mar 15, 2005 | Whiting Oil and Gas Corporation | Guitar Consolidated #1413 | 6,000 | 22735940 |
| 558973 | Mar 14, 2005 | Mar 14, 2005 | Whiting Oil and Gas Corporation | Guitar Consolidated #1414 | 6,000 | 22735941 |
| 558494 | Mar 3, 2005 | Mar 3, 2005 | Southwest Royalties, Inc. | Powell 24 #4 | 8,000 | 22735939 |
| 558329 | Mar 3, 2005 | Mar 3, 2005 | Barrett Brothers Oil & Gas, Inc. | Cole Ranch #1 | 8,000 | 22735938 |
| 554220Amendment | Feb 14, 2005 | Feb 14, 2005 | Pure Resources, L.P. | Shafer #1 | 9,313 | 22734398 |
| 556909 | Jan 31, 2005 | Jan 31, 2005 | Abraxas Petroleum Corporation | Williams #1 | 10,868 | 22731706 |
| 556823 | Jan 26, 2005 | Jan 26, 2005 | Whiting Oil and Gas Corporation | Guitar Consolidated #1412 | 6,000 | 22735937 |
| 556796 | Jan 26, 2005 | Jan 26, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fusselman/ Unit #502WI | 10,500 | 22735936 |
| 556794 | Jan 26, 2005 | Jan 26, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fusselman/Unit #801WI | 10,500 | 22735935 |
| 556793 | Jan 26, 2005 | Jan 26, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fusselman/Unit #903 | 10,500 | 22735934 |
| 556793Amendment | Jan 26, 2005 | Jan 26, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fusselman/Unit #903 | 10,500 | 22735934 |
| 556792 | Jan 26, 2005 | Jan 26, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fusselman/Unit #902 | 10,500 | 22735933 |
| 556792Amendment | Jan 26, 2005 | Jan 26, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fusselman/Unit #902 | 10,500 | 22735933 |
| 556792Amendment | Jan 26, 2005 | Jan 26, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fusselman/Unit #902 | 10,500 | 22735933 |
| 556574 | Jan 21, 2005 | Jan 21, 2005 | Sharp Image Energy, Inc. | Vincent East "59" #1 | 7,400 | 22735816 |
| 555618 | Jan 13, 2005 | Jan 13, 2005 | Integras Operating, LLC | Griffin #1 | 4,999 | 22732998 |
| 555906 | Jan 10, 2005 | Jan 10, 2005 | Conocophillips Company | Eason, S. T. -A- #1 | 3,100 | 22704237 |
| 555906Amendment | Jan 10, 2005 | Jan 10, 2005 | Conocophillips Company | Eason, S. T. -A- #1 | 3,350 | 22704237 |
| 555619 | Jan 7, 2005 | Jan 7, 2005 | Conocophillips Company | Chalk, Owen #58 | 6,000 | 22734530 |
| 555810 | Jan 6, 2005 | Jan 6, 2005 | Whiting Oil and Gas Corporation | Guitar Consolidated #1411 | 6,000 | 22735932 |
| 555810Amendment | Jan 6, 2005 | Jan 6, 2005 | Whiting Oil and Gas Corporation | Guitar Consolidated #1411 | 6,000 | 22735932 |
| 555634 | Jan 4, 2005 | Jan 4, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fussleman/ Unit #603 | 10,500 | 22735930 |
| 555633 | Jan 4, 2005 | Jan 4, 2005 | Chesapeake Operating, Inc. | Southeast Luther/Fussleman/ Unit #1003 | 10,500 | 22735931 |
| 554557 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "B" #14 | 3,200 | 22735929 |
| 554556 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "B" #13 | 3,200 | 22735928 |
| 554555 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "B" #12 | 3,200 | 22735927 |
| 554554 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "B" #10 | 3,200 | 22735926 |
| 554551 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "C" #15 | 3,200 | 22735923 |
| 554548 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "C" #12 | 3,200 | 22735920 |
| 554547 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "C" #11 | 3,200 | 22735919 |
| 554546 | Jan 4, 2005 | Jan 4, 2005 | Forest Oil Permian Corporation | Tl&m "C" #10 | 3,200 | 22735918 |
| 555343 | Dec 29, 2004 | Dec 29, 2004 | Brown, H.L. Operating, L.L.C. | Rogers, Lucy #1 | 6,000 | 22733580 |
| 553384 | Dec 23, 2004 | Dec 23, 2004 | Crownquest Operating, LLC | Peavey #1 | 5,999 | 22735911 |
| 554553 | Dec 9, 2004 | Dec 9, 2004 | Forest Oil Permian Corporation | Tl&m "C" #17 | 3,200 | 22735925 |
| 554552 | Dec 9, 2004 | Dec 9, 2004 | Forest Oil Permian Corporation | Tl&m "C" #16 | 3,200 | 22735924 |
| 554550 | Dec 9, 2004 | Dec 9, 2004 | Forest Oil Permian Corporation | Tl&m "C" #14 | 3,200 | 22735922 |
| 554549 | Dec 9, 2004 | Dec 9, 2004 | Forest Oil Permian Corporation | Tl&m "C" #13 | 3,200 | 22735921 |
| 554220 | Dec 8, 2004 | Dec 8, 2004 | Pure Resources, L.P. | Shafer #1 | 9,313 | 22734398 |
| 554430 | Dec 6, 2004 | Dec 6, 2004 | Boyd & McWilliams Energy Group | Hooks, A. J.-A- #1 | 3,400 | 22710291 |
| 554202 | Nov 30, 2004 | Nov 30, 2004 | Whiting Oil and Gas Corporation | Texaco "23" #5 | 7,950 | 22735917 |
| 554202Amendment | Nov 30, 2004 | Nov 30, 2004 | Whiting Oil and Gas Corporation | Texaco "23" #5 | 7,950 | 22735917 |
| 554200 | Nov 30, 2004 | Nov 30, 2004 | Whiting Oil and Gas Corporation | Allday "15" #5 | 7,950 | 22735916 |
| 554200Amendment | Nov 30, 2004 | Nov 30, 2004 | Whiting Oil and Gas Corporation | Allday "15" #5 | 7,950 | 22735916 |
| 554199 | Nov 30, 2004 | Nov 30, 2004 | Whiting Oil and Gas Corporation | Allday "N14" #5 | 7,950 | 22735915 |
| 554199Amendment | Nov 30, 2004 | Nov 30, 2004 | Whiting Oil and Gas Corporation | Allday "N14" #5 | 7,950 | 22735915 |
| 554083 | Nov 24, 2004 | Nov 24, 2004 | Crownquest Operating, LLC | Atkinson "26" #1 | 5,300 | 22735914 |
| 553400 | Nov 12, 2004 | Nov 12, 2004 | Forest Oil Corporation | Denman, LC -B- #21 | 3,200 | 22735912 |
| 553399 | Nov 12, 2004 | Nov 12, 2004 | Forest Oil Corporation | Denman, LC -B- #23 | 3,200 | 22735913 |
| 553250 | Nov 5, 2004 | Nov 5, 2004 | Crownquest Operating, LLC | Guitar Consolidated #1501 | 5,999 | 22735910 |
| 553250Amendment | Nov 5, 2004 | Nov 5, 2004 | Crownquest Operating, LLC | Guitar Consolidated #1501 | 5,999 | 22735910 |
| 553250Amendment | Nov 5, 2004 | Nov 5, 2004 | Crownquest Operating, LLC | Guitar Consolidated #1501 | 5,999 | 22735910 |
| 553194 | Nov 5, 2004 | Nov 5, 2004 | Crownquest Operating, LLC | Long #2 | 5,999 | 22735909 |
| 552890 | Nov 1, 2004 | Nov 1, 2004 | Crownquest Operating, LLC | Peavey #2 | 5,999 | 22735907 |
| 552890Amendment | Nov 1, 2004 | Nov 1, 2004 | Crownquest Operating, LLC | Peavey #2 | 5,999 | 22735907 |
| 552890Amendment | Nov 1, 2004 | Nov 1, 2004 | Whiting Oil and Gas Corporation | Peavey #1402 | 6,000 | 22735907 |
| 552977 | Oct 29, 2004 | Oct 29, 2004 | Probe Exploration Company | Shafer #1 A | 7,600 | 22735908 |
| 551222 | Oct 26, 2004 | Oct 26, 2004 | Enervest Operating, L.L.C. | Bell, A.M. #56 R | 2,900 | 22735902 |
| 552603 | Oct 21, 2004 | Oct 21, 2004 | Crownquest Operating, LLC | Long "13" #4 | 5,999 | 22735906 |
| 552603Amendment | Oct 21, 2004 | Oct 21, 2004 | Crownquest Operating, LLC | King "13" #1 | 5,999 | 22735906 |
| 552602 | Oct 21, 2004 | Oct 21, 2004 | Crownquest Operating, LLC | Long "13" #2 | 5,999 | 22735905 |
| 551221 | Oct 21, 2004 | Oct 21, 2004 | Enervest Operating, L.L.C. | Murray 'B' #10 | 2,900 | 22735901 |
| 550657 | Oct 20, 2004 | Oct 20, 2004 | Forest Oil Corp. | Denman, LC "B" #24 | 3,200 | 22735896 |
| 552159 | Oct 14, 2004 | Oct 14, 2004 | WTG Exploration | Barnett #1 | 12,000 | 22735904 |
| 552159Amendment | Oct 14, 2004 | Oct 14, 2004 | WTG Exploration | Barnett #1 | 12,000 | 22735904 |
| 551962 | Oct 13, 2004 | Oct 13, 2004 | Sharp Image Energy, Inc. | Ringneck Dove #1 | 9,075 | 22733943 |
| 551079 | Oct 11, 2004 | Oct 11, 2004 | Partee Drilling Inc. | Twins #393 | 8,200 | 22735899 |
| 551571 | Sep 29, 2004 | Sep 29, 2004 | Terrace Petroleum Corporation | Quinn #1 | 10,500 | 22735903 |
| 551626 | Sep 28, 2004 | Sep 28, 2004 | Midland Oil and Gas, Inc. | DO Right #1 | 8,085 | 22735727 |
| 550233 | Sep 22, 2004 | Sep 22, 2004 | Ruwco Oil and Gas Corp. | Green-Eyed #1 | 8,500 | 22735891 |
| 550233Amendment | Sep 22, 2004 | Sep 22, 2004 | Ruwco Oil and Gas Corp. | Green-Eyed #1 | 9,000 | 22735891 |
| 550860 | Sep 21, 2004 | Sep 21, 2004 | BTA Oil Producers | Zula McCrary -F- #4501 | 8,881 | 22735111 |