| 478777 | Aug 20, 1998 | Aug 20, 1998 | Devon Energy Corporation(nevada) | Rogers 461 #1 | 10,700 | 29532448 |
| 478738 | Aug 18, 1998 | Aug 18, 1998 | Crescendo Resources, L.P. | Schoenhals #2508 | 11,900 | 29531980 |
| 478762 | Aug 17, 1998 | Aug 17, 1998 | Lomak Production Company | Cates #1 | 9,500 | 29532447 |
| 477745Amendment | Aug 14, 1998 | Aug 14, 1998 | Strat Land Exploration Company | Valerie #1 | 12,350 | 29532443 |
| 477744Amendment | Aug 14, 1998 | Aug 14, 1998 | Strat Land Exploration Company | Michelle #1 | 12,400 | 29532442 |
| 478644 | Aug 11, 1998 | Aug 11, 1998 | Upland Resources, Inc. | Walter #3 | 11,400 | 29532445 |
| 477743 | Aug 6, 1998 | Aug 6, 1998 | Strat Land Exploration Company | Andrew #1 | 12,600 | 29532441 |
| 478460 | Aug 5, 1998 | Aug 5, 1998 | Cabot Oil & Gas Corporation | Walter "2" #256 | 11,400 | 29532379 |
| 478412 | Aug 3, 1998 | Aug 3, 1998 | Crescendo Resources, L.P. | King #2548 | 10,700 | 29532444 |
| 478203 | Jul 27, 1998 | Jul 27, 1998 | Strat Land Exploration Company | Walter #1 | 7,800 | 29532317 |
| 477544 | Jul 1, 1998 | Jul 1, 1998 | Crescendo Resources, L.P. | Duke, C. C. "B" #2 | 7,600 | 29532130 |
| 477543 | Jul 1, 1998 | Jul 1, 1998 | Bracken Operating, L.L.C. | McCartor #1988 | 10,000 | 29500043 |
| 477466 | Jun 30, 1998 | Jun 30, 1998 | Crescendo Resources, L.P. | Piper, Ola O. #19 | 10,200 | 29532440 |
| 477291 | Jun 24, 1998 | Jun 24, 1998 | Crescendo Resources, L.P. | Anthony, Anita B. #4372 | 8,450 | 29532439 |
| 477286 | Jun 24, 1998 | Jun 24, 1998 | Crescendo Resources, L.P. | Duke, C. C. "A" #6 | 10,200 | 29532337 |
| 476889 | Jun 10, 1998 | Jun 10, 1998 | Crescendo Resources, L.P. | Piper, Ola O. #13 | 10,200 | 29532216 |
| 476791 | Jun 4, 1998 | Jun 4, 1998 | Crescendo Resources, L.P. | Piper #3 | 10,300 | 29532438 |
| 476791Amendment | Jun 4, 1998 | Jun 4, 1998 | Crescendo Resources, L.P. | Piper #3 | 10,350 | 29532438 |
| 476609 | Jun 3, 1998 | Jun 3, 1998 | Crescendo Resources, L.P. | Hamker, Wallace N. #1 | 7,553 | 29530209 |
| 476779 | Jun 2, 1998 | Jun 2, 1998 | Brigham Oil & Gas, L.P. | Katy 285 #1 | 12,000 | 29532437 |
| 476720 | May 29, 1998 | May 29, 1998 | Strat Land Exploration Company | Gray #1A | 11,450 | 29532436 |
| 475861 | May 5, 1998 | May 5, 1998 | Walsh & Watts, Inc. | King, A. R. #6 | 6,800 | 29532435 |
| 474004 | Apr 27, 1998 | Apr 27, 1998 | Phillips Petroleum Company | Cross F #2 | 7,610 | 29531809 |
| 475612 | Apr 23, 1998 | Apr 23, 1998 | Dreyfus, Louis Natural Gas Corp | Foster 248 #1 | 10,550 | 29532323 |
| 475068 | Apr 14, 1998 | Apr 14, 1998 | Cabot Oil & Gas Corporation | Halbrook, Phillip #1032 | 8,900 | 29532434 |
| 475232 | Apr 10, 1998 | Apr 10, 1998 | McNic Oil & Gas Midcontinent,inc | Haines, Grace #3 | 8,200 | 29532433 |
| 474413 | Apr 9, 1998 | Apr 9, 1998 | Kaiser-Francis Oil Company | Sansing #2 | 11,950 | 29532431 |
| 474413Amendment | Apr 9, 1998 | Apr 9, 1998 | Kaiser-Francis Oil Company | Sansing #2 | 11,950 | 29532431 |
| 474677 | Mar 26, 1998 | Mar 26, 1998 | Discovery Operating, Inc. | Schultz #1 | 10,400 | 29532432 |
| 474677Amendment | Mar 26, 1998 | Mar 26, 1998 | Discovery Operating, Inc. | Schultz #1 | 10,400 | 29532432 |
| 474181 | Mar 12, 1998 | Mar 12, 1998 | Crescendo Resources, L.P. | Martin, Susan J. #5 | 7,800 | 29532430 |
| 474120 | Mar 12, 1998 | Mar 12, 1998 | Cabot Oil & Gas Corporation | Dorsey #2185 | 11,500 | 29532429 |
| 474120Amendment | Mar 12, 1998 | Mar 12, 1998 | Cabot Oil & Gas Corporation | Dorsey "2" #185 | 11,407 | 29532429 |
| 457932 | Mar 4, 1998 | Mar 4, 1998 | Midgard Energy Company | Piper, Ola O. #17 | 9,400 | 29532345 |
| 473867 | Feb 27, 1998 | Feb 27, 1998 | Brigham Oil & Gas, L.P. | Elise 286 #1A | 11,500 | 29532428 |
| 473867Amendment | Feb 27, 1998 | Feb 27, 1998 | Brigham Oil & Gas, L.P. | Elise 286 #1A | 11,500 | 29532428 |
| 473773 | Feb 25, 1998 | Feb 25, 1998 | KCS Medallion Resources, Inc. | Ballard #1 | 10,900 | 29532427 |
| 473333 | Feb 20, 1998 | Feb 20, 1998 | Crescendo Resources, L.P. | Barton, JO et Al #4511 | 9,500 | 29531711 |
| 471999 | Feb 18, 1998 | Feb 18, 1998 | Crescendo Resources, L.P. | Piper, Ola, O. #20 | 10,300 | 29532422 |
| 473444 | Feb 17, 1998 | Feb 17, 1998 | Strat Land Exploration Company | Gray #1 | 11,400 | 29532426 |
| 471583 | Feb 9, 1998 | Feb 9, 1998 | Crescendo Resources, L.P. | Kliewer, Carrie #5 | 7,750 | 29532419 |
| 472968 | Feb 6, 1998 | Feb 6, 1998 | Phillips Petroleum Company | Cruise E #6 | 7,600 | 29532425 |
| 472400 | Jan 20, 1998 | Jan 20, 1998 | Dreyfus, Louis Natural Gas Corp | Jones Trust 98 #1 | 10,975 | 29532424 |
| 472188 | Jan 14, 1998 | Jan 14, 1998 | Brigham Oil & Gas, L.P. | Elise 286 #1 | 11,500 | 29532423 |
| 472019 | Jan 14, 1998 | Jan 14, 1998 | Bracken Operating, L.L.C. | Weinette #1990 | 10,100 | 29532421 |
| 471206 | Jan 13, 1998 | Jan 13, 1998 | Crescendo Resources, L.P. | Gex "B" #4 | 7,700 | 29532418 |
| 471931 | Jan 7, 1998 | Jan 7, 1998 | McNic Oil & Gas Midcontinent,inc | Haines, Grace #2 | 8,300 | 29532420 |
| 470592 | Dec 18, 1997 | Dec 18, 1997 | Enron Oil & Gas Company | Heil 1060 #1 | 9,650 | 29532414 |
| 470592Amendment | Dec 18, 1997 | Dec 18, 1997 | Mewbourne Oil Co. | Heil "1060" #1 | 9,510 | 29532414 |
| 470246 | Dec 18, 1997 | Dec 18, 1997 | Crescendo Resources, L.P. | Duke #5893 | 7,700 | 29532409 |
| 470231 | Dec 18, 1997 | Dec 18, 1997 | Crescendo Resources, L.P. | Born, Alex "E" #5 | 11,100 | 29532411 |
| 470229 | Dec 18, 1997 | Dec 18, 1997 | Crescendo Resources, L.P. | Hanshu et Al #5 | 7,700 | 29532410 |
| 470292 | Dec 15, 1997 | Dec 15, 1997 | Apache Corporation | Harrelson #3 | 9,200 | 29532412 |
| 471134 | Dec 12, 1997 | Dec 12, 1997 | Brigham Oil & Gas, L.P. | Gaylon 329 #1 | 11,200 | 29532417 |
| 470840 | Dec 9, 1997 | Dec 9, 1997 | Crescendo Resources, L.P. | Duke, C. C. "A" #7728 | 7,700 | 29532416 |
| 470794 | Dec 4, 1997 | Dec 4, 1997 | Mewbourne Oil Co. | Herman #1 | 9,850 | 29532415 |
| 470278 | Nov 24, 1997 | Nov 24, 1997 | Crescendo Resources, L.P. | Born, Alex "B" #4 | 10,000 | 29532413 |
| 469583 | Nov 6, 1997 | Nov 6, 1997 | Walsh & Watts, Inc. | King, A.R. #5 | 6,800 | 29532407 |
| 469573 | Nov 6, 1997 | Nov 6, 1997 | Crescendo Resources, L.P. | Stallings, Viola M. #5 | 7,700 | 29532406 |
| 469572 | Nov 6, 1997 | Nov 6, 1997 | Crescendo Resources, L.P. | Murphy, W. A. "B" #3427 | 8,300 | 29532405 |
| 469717 | Nov 5, 1997 | Nov 5, 1997 | Samedan Oil Corporation | Stanley Unit #2 | 11,000 | 29532408 |
| 469717Amendment | Nov 5, 1997 | Nov 5, 1997 | Samedan Oil Corporation | Stanley Unit #2 | 11,000 | 29532408 |
| 469280 | Nov 3, 1997 | Nov 3, 1997 | Crescendo Resources, L.P. | Franano, Willene #4 | 8,300 | 29532403 |
| 469279 | Nov 3, 1997 | Nov 3, 1997 | Crescendo Resources, L.P. | Schultz "B" #6 | 7,700 | 29532402 |
| 469465 | Oct 31, 1997 | Oct 31, 1997 | Crescendo Resources, L.P. | Wassell, John R. #6 | 7,700 | 29532404 |
| 469337 | Oct 27, 1997 | Oct 27, 1997 | Continental Operating Co. | Broyles #3 | 7,500 | 29532401 |
| 469007 | Oct 24, 1997 | Oct 24, 1997 | Crescendo Resources, L.P. | Gex, Lutie W. #4875 | 7,700 | 29532399 |
| 468065 | Oct 24, 1997 | Oct 24, 1997 | Unit Petroleum Company | Booth "C" #8 | 6,800 | 29532392 |
| 469196 | Oct 23, 1997 | Oct 23, 1997 | Dreyfus, Louis Natural Gas Corp | Jones Trust #1681 | 10,700 | 29532400 |
| 468796 | Oct 16, 1997 | Oct 16, 1997 | Enron Oil & Gas Company | Burrus Family 255-1 #1 | 11,800 | 29532398 |
| 468796Amendment | Oct 16, 1997 | Oct 16, 1997 | Enron Oil & Gas Company | Burrus Family 255 - 1 #1 | 11,800 | 29532398 |
| 468616 | Oct 16, 1997 | Oct 16, 1997 | Crescendo Resources, L.P. | Peil, Christ #4 | 7,700 | 29532395 |
| 468615 | Oct 16, 1997 | Oct 16, 1997 | Crescendo Resources, L.P. | King-Mathers #1 | 7,650 | 29532396 |
| 468615Amendment | Oct 16, 1997 | Oct 16, 1997 | Crescendo Resources, L.P. | King-Mathers #1 | 7,650 | 29532396 |
| 468614 | Oct 16, 1997 | Oct 16, 1997 | Crescendo Resources, L.P. | Redelsperger #5 | 11,100 | 29532397 |
| 468613 | Oct 16, 1997 | Oct 16, 1997 | Crescendo Resources, L.P. | Bradford, Lydia "D" #4 | 7,750 | 29532394 |
| 468413 | Oct 15, 1997 | Oct 15, 1997 | Unit Petroleum Company | Miles #10 | 6,800 | 29532393 |
| 468245 | Oct 13, 1997 | Oct 13, 1997 | Chaparral (USA) Energy, Inc. | Wesley #2 | 8,710 | 29530772 |
| 468476 | Oct 10, 1997 | Oct 10, 1997 | Natural Gas Anadarko Company | Herbert #1908 | 9,700 | 29531603 |
| 468392 | Oct 9, 1997 | Oct 9, 1997 | Crescendo Resources, L.P. | Wassell, John R. #4 | 7,800 | 29532224 |
| 467845 | Sep 19, 1997 | Sep 19, 1997 | Dreyfus, Louis Natural Gas Corp | Popham 193 #1 | 11,800 | 29532346 |
| 467845Amendment | Sep 19, 1997 | Sep 19, 1997 | Dreyfus, Louis Natural Gas Corp | Popham 193 #1 | 10,300 | 29532346 |
| 465142 | Sep 19, 1997 | Sep 19, 1997 | Strat Land Exploration Company | J. J. #185 | 12,600 | 29532382 |
| 467512 | Sep 18, 1997 | Sep 18, 1997 | Crescendo Resources, L.P. | Parker, Clarence Henry "a" 618 #1 | 8,948 | 29531100 |
| 466692 | Sep 16, 1997 | Sep 16, 1997 | Midgard Energy Company | Schoenhals, H. G. #4861 | 7,750 | 29532258 |
| 467279 | Sep 15, 1997 | Sep 15, 1997 | Crescendo Resources, L.P. | Barton Trust #1 | 10,800 | 29532390 |
| 467272 | Sep 15, 1997 | Sep 15, 1997 | Bracken Operating, L.L.C. | Bechthold #1989 | 10,500 | 29531699 |
| 467430 | Sep 10, 1997 | Sep 10, 1997 | Brigham Oil & Gas, L.P. | Maigan 245 #1 | 11,900 | 29532391 |
| 465643 | Sep 2, 1997 | Sep 2, 1997 | Strat Land Exploration Company | J. J. #1174 | 12,500 | 29532385 |
| 465578 | Sep 2, 1997 | Sep 2, 1997 | Strat Land Exploration Company | J. J. #192 | 12,600 | 29532384 |
| 466694 | Aug 27, 1997 | Aug 27, 1997 | Midgard Energy Company | Miller #3 | 6,800 | 29532389 |
| 466662 | Aug 22, 1997 | Aug 22, 1997 | Dreyfus, Louis Natural Gas Corp | Radar #1161 | 11,900 | 29532388 |
| 466662Amendment | Aug 22, 1997 | Aug 22, 1997 | Dreyfus, Louis Natural Gas Corp | Radar #1161 | 11,900 | 29532388 |
| 466544 | Aug 21, 1997 | Aug 21, 1997 | Unit Petroleum Company | Beck "C" #3 | 9,050 | 29532387 |
| 466408 | Aug 20, 1997 | Aug 20, 1997 | Midgard Energy Company | Wiley #1 | 7,950 | 29532386 |
| 465437 | Aug 12, 1997 | Aug 12, 1997 | Canyon Exploration Co. | Mathers #1 | 7,800 | 29532383 |
| 464592 | Aug 5, 1997 | Aug 5, 1997 | Strat Land Exploration Company | J. J. #186 | 12,700 | 29532380 |
| 464993 | Jul 16, 1997 | Jul 16, 1997 | Brigham Oil & Gas, L.P. | Justin 107 #1 | 12,500 | 29532381 |
| 463657 | Jul 9, 1997 | Jul 9, 1997 | Midgard Energy Company | Schultz "A" #5 | 7,750 | 29532374 |
| 464294 | Jun 26, 1997 | Jun 26, 1997 | Strat Land Exploration Company | Walter #2 | 11,600 | 29532379 |