| 615296Amendment | Mar 6, 2006 | Mar 6, 2006 | Crusader Energy Group, LLC | Enexco, Inc. Knox #1 | 9,000 | 49735994 |
| 615183 | Mar 3, 2006 | Mar 3, 2006 | Devon Energy Production Co, L.P. | Hughes, D.J. #37 | 7,500 | 49735993 |
| 615108 | Mar 2, 2006 | Mar 2, 2006 | Devon Energy Production Co, L.P. | Wcco 1 - Stevenson, Doris #8 | 9,000 | 49735992 |
| 615062 | Mar 1, 2006 | Mar 1, 2006 | Devon Energy Production Co, L.P. | Txi Gas Unit #6 D | 9,000 | 49735991 |
| 615062Amendment | Mar 1, 2006 | Mar 1, 2006 | Devon Energy Production Co, L.P. | Txi Gas Unit #6 D | 9,000 | 49735991 |
| 615055 | Mar 1, 2006 | Mar 1, 2006 | Devon Energy Production Co, L.P. | Perkins, T.w.(deep)gas Unit NO1 #6 HH | 9,000 | 49735990 |
| 615015 | Feb 28, 2006 | Feb 28, 2006 | Devon Energy Production Co, L.P. | Burrow, Earl D. Gas Unit #1 HH | 9,000 | 49735989 |
| 614716 | Feb 27, 2006 | Feb 27, 2006 | Ryder Scott Management, LLC | Maeyers #14 | 8,200 | 49735987 |
| 614715 | Feb 27, 2006 | Feb 27, 2006 | Ryder Scott Management, LLC | Maeyers #15 | 8,200 | 49735986 |
| 614644 | Feb 27, 2006 | Feb 27, 2006 | Aspen Operating Company, L.L.C. | Ponder, Stella #1 | 5,720 | 49701905 |
| 614581 | Feb 27, 2006 | Feb 27, 2006 | Aspen Operating Company, L.L.C. | Nunley, C. L. #2 | 6,264 | 49731607 |
| 614855 | Feb 24, 2006 | Feb 24, 2006 | Devon Energy Production Co, L.P. | Decatur Gas Unit No. 3 #6 HH | 9,000 | 49735988 |
| 614855Amendment | Feb 24, 2006 | Feb 24, 2006 | Devon Energy Production Co, L.P. | Decatur Gas Unit No. 3 #6 HH | 9,000 | 49735988 |
| 614806 | Feb 24, 2006 | Feb 24, 2006 | Devon Energy Production Co, L.P. | Decatur Gas Unit No. 1 #3 HH | 9,000 | 49735985 |
| 614779 | Feb 24, 2006 | Feb 24, 2006 | Devon Energy Production Co, L.P. | Chism, Royce #9 HH | 9,000 | 49735984 |
| 614746 | Feb 23, 2006 | Feb 23, 2006 | Fagadau Energy Corporation | Cunnius #1HH | 7,600 | 49735983 |
| 614746Amendment | Feb 23, 2006 | Feb 23, 2006 | Primexx Operating Corporation | Cunnius #1HH | 7,600 | 49735983 |
| 614302 | Feb 23, 2006 | Feb 23, 2006 | Aspen Operating Company, L.L.C. | Poteet #2 | 5,774 | 49701893 |
| 614524 | Feb 22, 2006 | Feb 22, 2006 | Devon Energy Production Co, L.P. | Timm, Tullie Gas Unit (Deep) #10 | 7,425 | 49735982 |
| 614163 | Feb 21, 2006 | Feb 21, 2006 | Aspen Operating Company, L.L.C. | Hutchinson -B- #5 | 5,900 | 49731591 |
| 614094 | Feb 21, 2006 | Feb 21, 2006 | Aspen Operating Company, L.L.C. | Flavis Greer #3 | 5,920 | 49702626 |
| 614323 | Feb 16, 2006 | Feb 16, 2006 | Devon Energy Production Co, L.P. | Birtie A. Pearson G.U. "A" #2 | 7,500 | 49735981 |
| 613749 | Feb 16, 2006 | Feb 16, 2006 | Burlington Resources O & G Co LP | J. E. French Unit #2BHH | 9,000 | 49735973 |
| 612549 | Feb 16, 2006 | Feb 16, 2006 | Upham Oil & Gas Company | Hunter, C. T. "A" #2 | 7,500 | 49735961 |
| 614215 | Feb 15, 2006 | Feb 15, 2006 | Devon Energy Production Co, L.P. | James D. Bentley #5 | 7,500 | 49735980 |
| 613985 | Feb 14, 2006 | Feb 14, 2006 | Devon Energy Production Co, L.P. | Blue, G. R. "A" #3 | 7,500 | 49735978 |
| 613773 | Feb 14, 2006 | Feb 14, 2006 | Burlington Resources O & G Co LP | C. W. "A" #28D | 9,000 | 49735976 |
| 613763 | Feb 14, 2006 | Feb 14, 2006 | Burlington Resources O & G Co LP | C. W. "A" #27 | 9,000 | 49735975 |
| 613759 | Feb 14, 2006 | Feb 14, 2006 | Burlington Resources O & G Co LP | C. W. "A" #26 | 9,000 | 49735974 |
| 614028 | Feb 10, 2006 | Feb 10, 2006 | Devon Energy Production Co, L.P. | Wise, James E. Gas Unit No. 1 #10 HH | 9,000 | 49735979 |
| 613972 | Feb 10, 2006 | Feb 10, 2006 | Devon Energy Production Co, L.P. | Waggoner, Crystelle GU #35H | 9,000 | 49735977 |
| 613376 | Feb 9, 2006 | Feb 9, 2006 | Devon Energy Production Co, L.P. | Shepherd, W. J. Gas Unit #4 | 9,000 | 49735968 |
| 613376Amendment | Feb 9, 2006 | Feb 9, 2006 | Devon Energy Production Co, L.P. | Shepherd, W. J. Gas Unit #4 | 9,000 | 49735968 |
| 613818 | Feb 8, 2006 | Feb 8, 2006 | Devon Energy Production Co, L.P. | Rann, Cleo A #3HH | 9,000 | 49735972 |
| 613818Amendment | Feb 8, 2006 | Feb 8, 2006 | Devon Energy Production Co, L.P. | Rann, Cleo A #3HH | 9,000 | 49735972 |
| 613710 | Feb 7, 2006 | Feb 7, 2006 | Devon Energy Production Co, L.P. | Bastian, F. J. #3 | 7,500 | 49735971 |
| 613534 | Feb 3, 2006 | Feb 3, 2006 | Denbury Onshore, LLC | Trwd #G 2H | 6,950 | 49735970 |
| 613379 | Feb 1, 2006 | Feb 1, 2006 | EOG Resources, Inc. | Ashe #1HH | 7,000 | 49735969 |
| 612846 | Jan 30, 2006 | Jan 30, 2006 | Knight, Reuben B. | Blocker, W. O. #3 | 6,000 | 49735967 |
| 613163 | Jan 27, 2006 | Jan 27, 2006 | Devon Energy Production Co, L.P. | Tedrow, William Gas Unit #10 | 9,000 | 49735966 |
| 612905 | Jan 24, 2006 | Jan 24, 2006 | Chief Oil & Gas LLC | Craig #1HH | 8,900 | 49735964 |
| 612717 | Jan 20, 2006 | Jan 20, 2006 | Star of Texas Energy Srvs, Inc. | RSK-Star #6 | 8,000 | 49735962 |
| 612717Amendment | Jan 20, 2006 | Jan 20, 2006 | Star of Texas Energy Srvs, Inc. | RSK-Star #6 | 8,000 | 49735962 |
| 612545 | Jan 18, 2006 | Jan 18, 2006 | Devon Energy Production Co, L.P. | Wcco 1 - Sims, Thomas P. "A" #6 | 9,000 | 49735960 |
| 612545Amendment | Jan 18, 2006 | Jan 18, 2006 | Devon Energy Production Co, L.P. | Wcco 1 - Sims, Thomas P. "A" #6 | 9,000 | 49735960 |
| 612542 | Jan 18, 2006 | Jan 18, 2006 | Devon Energy Production Co, L.P. | Wcco 1 - Sims, Thomas P. "B" #6 | 9,000 | 49735959 |
| 612406 | Jan 18, 2006 | Jan 18, 2006 | Stratagas, Inc. | Tanner, D. -A- #2 | 7,500 | 49735956 |
| 612504 | Jan 17, 2006 | Jan 17, 2006 | Roil Mineral & Land Co. | Wolfe-Guinn-Renfro #10 | 8,000 | 49735957 |
| 612489 | Jan 17, 2006 | Jan 17, 2006 | Aspen Operating Company, L.L.C. | Octodog #2 | 6,405 | 49732070 |
| 612468 | Jan 17, 2006 | Jan 17, 2006 | Devon Energy Production Co, L.P. | Young, Curtis #3 | 9,000 | 49735958 |
| 612459 | Jan 17, 2006 | Jan 17, 2006 | Star of Texas Energy Srvs, Inc. | Jennings-Star #1HH | 8,000 | 49735955 |
| 612378 | Jan 13, 2006 | Jan 13, 2006 | Devon Energy Production Co, L.P. | Wcco 1 - Stevenson, N. R. #9 | 9,000 | 49735954 |
| 612351 | Jan 12, 2006 | Jan 12, 2006 | Devon Energy Production Co, L.P. | Mackey, W. L. GU 3 (SA) #12H | 9,000 | 49735953 |
| 612351Amendment | Jan 12, 2006 | Jan 12, 2006 | Devon Energy Production Co, L.P. | Mackey, W. L. GU 3 (SA) #12H | 9,000 | 49735953 |
| 611864 | Jan 11, 2006 | Jan 11, 2006 | Burlington Resources O & G Co LP | Crystelle Waggoner Gas Unit #30B | 9,000 | 49735952 |
| 611901 | Jan 5, 2006 | Jan 5, 2006 | Chief Oil & Gas LLC | Blase "C" #1 | 6,700 | 49735137 |
| 611695 | Dec 29, 2005 | Dec 29, 2005 | Devon Energy Production Co, L.P. | A.C. McCurdy #3D | 9,000 | 49735951 |
| 611527 | Dec 29, 2005 | Dec 29, 2005 | Encana Oil & Gas(usa) Inc. | Forman #3HH | 9,000 | 49735950 |
| 611524 | Dec 29, 2005 | Dec 29, 2005 | Encana Oil & Gas(usa) Inc. | Forman #2HH | 9,000 | 49735949 |
| 611524Amendment | Dec 29, 2005 | Dec 29, 2005 | Encana Oil & Gas(usa) Inc. | Forman #2HH | 9,000 | 49735949 |
| 611516 | Dec 22, 2005 | Dec 22, 2005 | Devon Energy Production Co, L.P. | Graham, Fred L. Gas Unit #11 HH | 9,000 | 49735948 |
| 611465 | Dec 22, 2005 | Dec 22, 2005 | Devon Energy Production Co, L.P. | Wcco 1 - Stevenson, N. R. #8 | 9,000 | 49735946 |
| 611464 | Dec 22, 2005 | Dec 22, 2005 | Devon Energy Production Co, L.P. | Wcco 1 - Stevenson, N. R. #7 | 9,000 | 49735947 |
| 611095 | Dec 15, 2005 | Dec 15, 2005 | Devon Energy Production Co, L.P. | Nash-Billingsley #4 | 9,000 | 49735945 |
| 610898 | Dec 13, 2005 | Dec 13, 2005 | Western Chief Oil & Gas Company | Foster Unit #1HH | 9,000 | 49735943 |
| 610898Amendment | Dec 13, 2005 | Dec 13, 2005 | Western Chief Oil & Gas Company | Foster Unit #1 | 7,380 | 49735943 |
| 610903 | Dec 12, 2005 | Dec 12, 2005 | Devon Energy Production Co, L.P. | Dahlin, M. W. GU 1 #4 HH | 9,000 | 49735944 |
| 610777 | Dec 9, 2005 | Dec 9, 2005 | Devon Energy Production Co, L.P. | Blevins, Inez #3 | 9,000 | 49735942 |
| 610764 | Dec 9, 2005 | Dec 9, 2005 | Devon Energy Production Co, L.P. | Taylor, Lawrence #2 HH | 9,000 | 49735941 |
| 610693 | Dec 9, 2005 | Dec 9, 2005 | Burlington Resources O & G Co LP | Crystelle Waggoner Gas Unit #37B | 9,000 | 49735939 |
| 610692 | Dec 9, 2005 | Dec 9, 2005 | Burlington Resources O & G Co LP | Crystelle Waggoner Gas Unit #35B | 9,000 | 49735940 |
| 610609 | Dec 6, 2005 | Dec 6, 2005 | Encana Oil & Gas(usa) Inc. | Cole Trust, M.T. #12AHH | 9,000 | 49735938 |
| 610609Amendment | Dec 6, 2005 | Dec 6, 2005 | Encana Oil & Gas(usa) Inc. | Cole Trust, M.T. #12AHH | 9,000 | 49735938 |
| 610336 | Dec 2, 2005 | Dec 2, 2005 | Aruba Petroleum, Inc. | McMaster Unit #1 | 9,000 | 49735937 |
| 610209 | Dec 2, 2005 | Dec 2, 2005 | Devon Energy Production Co, L.P. | Musgrove, J. A. #1 | 4,800 | 49733503 |
| 610342 | Dec 1, 2005 | Dec 1, 2005 | Devon Energy Production Co, L.P. | Huddleston, Nell "C" #4 | 6,200 | 49734719 |
| 610342Amendment | Dec 1, 2005 | Dec 1, 2005 | Devon Energy Production Co, L.P. | Huddleston, Nell "A" #3 | 7,650 | 49734719 |
| 610296 | Dec 1, 2005 | Dec 1, 2005 | Devon Energy Production Co, L.P. | Taylor, Cora #7 | 8,300 | 49735936 |
| 610139 | Nov 29, 2005 | Nov 29, 2005 | Nautilus Exploration, Inc. | Little #3 | 8,450 | 49735934 |
| 610044 | Nov 28, 2005 | Nov 28, 2005 | Adkins, R. L. Corp. | Martin #2 | 10,000 | 49735932 |
| 609899 | Nov 28, 2005 | Nov 28, 2005 | Richey, Ray Management Co., Inc. | Horner, J. T. #1 | 8,200 | 49735933 |
| 609555 | Nov 18, 2005 | Nov 18, 2005 | Ryder Scott Oil Company | Maeyers #13 | 8,200 | 49735930 |
| 609553 | Nov 18, 2005 | Nov 18, 2005 | Ryder Scott Oil Company | Maeyers #12 | 8,200 | 49735929 |
| 609704 | Nov 17, 2005 | Nov 17, 2005 | Adkins, R. L. Corp. | Knight #6 | 10,000 | 49735931 |
| 609588 | Nov 16, 2005 | Nov 16, 2005 | Aspen Operating Company, L.L.C. | Hamilton, Annie #1 | 5,800 | 49701117 |
| 609374 | Nov 14, 2005 | Nov 14, 2005 | Aspen Operating Company, L.L.C. | Hutchinson "B" #4 | 5,800 | 49700636 |
| 609274 | Nov 10, 2005 | Nov 10, 2005 | Aruba Petroleum, Inc. | Blais #1 | 9,000 | 49735928 |
| 609086 | Nov 7, 2005 | Nov 7, 2005 | Encana Oil & Gas(usa) Inc. | Winder #1HH | 9,000 | 49735927 |
| 608988 | Nov 4, 2005 | Nov 4, 2005 | Star of Texas Energy Srvs, Inc. | Garrett-Star #1HH | 8,000 | 49735926 |
| 608988Amendment | Nov 4, 2005 | Nov 4, 2005 | Strata Operating, Inc. | Garrett-Star #1 | 8,000 | 49735926 |
| 608944 | Nov 3, 2005 | Nov 3, 2005 | Coffman Tank Trucks Inc | Trull #2 | 3,400 | 49735925 |
| 608678 | Nov 1, 2005 | Nov 1, 2005 | Encana Oil & Gas(usa) Inc. | Childers #1HH | 9,000 | 49735924 |
| 608616 | Nov 1, 2005 | Nov 1, 2005 | Encana Oil & Gas(usa) Inc. | Childers #2HH | 9,000 | 49735923 |
| 608409 | Oct 27, 2005 | Oct 27, 2005 | Burlington Resources O & G Co LP | McKissick #7B | 9,000 | 49735922 |
| 608325 | Oct 24, 2005 | Oct 24, 2005 | Aruba Petroleum, Inc. | Frye, Rex #1 | 9,000 | 49735921 |
| 608278 | Oct 21, 2005 | Oct 21, 2005 | Tema Oil and Gas Company | Watts, Callie #3 | 8,500 | 49735919 |
| 608204 | Oct 21, 2005 | Oct 21, 2005 | Encana Oil & Gas(usa) Inc. | Forman #6HH | 9,000 | 49735918 |
| 608203 | Oct 21, 2005 | Oct 21, 2005 | Encana Oil & Gas(usa) Inc. | Forman #5HH | 9,000 | 49735917 |
| 608077 | Oct 18, 2005 | Oct 18, 2005 | Encana Oil & Gas(usa) Inc. | Caswell "B" #1HH | 9,000 | 49735916 |
| 608077Amendment | Oct 18, 2005 | Oct 18, 2005 | Encana Oil & Gas(usa) Inc. | Caswell "B" #1HH | 9,000 | 49735916 |