| 512510Amendment | Aug 31, 2001 | Aug 31, 2001 | St. Mary Land & Exploration Co. | Reagan Estate #2 | 9,400 | 29331434 |
| 512215 | Aug 6, 2001 | Aug 6, 2001 | Mitchell Energy Company L.P. | Little, W. P. #6 | 11,350 | 29331433 |
| 511787 | Jul 26, 2001 | Jul 26, 2001 | XTO Energy Inc. | Reed Gas Unit No. 1 #1 | 9,900 | 29330960 |
| 511457 | Jul 17, 2001 | Jul 17, 2001 | Devon Energy Production Co, L.P. | Devon Fee #1 | 14,000 | 29331432 |
| 511433 | Jul 13, 2001 | Jul 13, 2001 | Mitchell Energy Company L.P. | Reed "R" #2 | 12,600 | 29331431 |
| 511271 | Jul 10, 2001 | Jul 10, 2001 | Mitchell Energy Company L.P. | Capps, R. T. #2 | 9,500 | 29331275 |
| 510964 | Jul 6, 2001 | Jul 6, 2001 | Sklar Exploration Company LLC | Reagan #1 | 9,500 | 29331534 |
| 510803 | Jun 28, 2001 | Jun 28, 2001 | Mitchell Energy Company L.P. | Burleson #5 | 11,800 | 29331429 |
| 510293 | Jun 22, 2001 | Jun 22, 2001 | St. Mary Land & Exploration Co. | White #14 | 9,450 | 29331423 |
| 510293Amendment | Jun 22, 2001 | Jun 22, 2001 | St. Mary Land & Exploration Co. | White #14 | 9,450 | 29331423 |
| 510496 | Jun 20, 2001 | Jun 20, 2001 | Mitchell Energy Company L.P. | Jackson, R. F. "C" #3 | 11,200 | 29331427 |
| 510495 | Jun 20, 2001 | Jun 20, 2001 | Mitchell Energy Company L.P. | Jackson, R. F. "C" #2 | 11,400 | 29331428 |
| 510379 | Jun 20, 2001 | Jun 20, 2001 | Sklar Exploration Company LLC | Jackson Unit 2 #2 | 9,500 | 29331426 |
| 510379Amendment | Jun 20, 2001 | Jun 20, 2001 | Sklar Exploration Company LLC | Jackson Unit 2 #2 | 9,500 | 29331426 |
| 510296 | Jun 20, 2001 | Jun 20, 2001 | St. Mary Land & Exploration Co. | Wilson #14 | 9,450 | 29331425 |
| 510295 | Jun 20, 2001 | Jun 20, 2001 | St. Mary Land & Exploration Co. | Keris #8 | 9,450 | 29331422 |
| 510294 | Jun 19, 2001 | Jun 19, 2001 | St. Mary Land & Exploration Co. | White #13 | 9,450 | 29331424 |
| 510072 | Jun 11, 2001 | Jun 11, 2001 | Marathon Oil Company | Watson #2 | 10,800 | 29331421 |
| 508785Amendment | Jun 6, 2001 | Jun 6, 2001 | XTO Energy Inc. | Standley Gas Unit No. 1 #3 | 14,000 | 29331412 |
| 509565 | Jun 1, 2001 | Jun 1, 2001 | Sklar Exploration Company LLC | Louise #1 | 9,500 | 29331420 |
| 509565Amendment | Jun 1, 2001 | Jun 1, 2001 | Sklar Exploration Company LLC | Louise #1 | 9,250 | 29331420 |
| 509419 | May 25, 2001 | May 25, 2001 | St. Mary Land & Exploration Co. | Wilson #13 | 9,450 | 29331419 |
| 509380 | May 25, 2001 | May 25, 2001 | O'Benco, Inc. | Bobby Reed Gas Unit #4 | 12,000 | 29331418 |
| 509280 | May 24, 2001 | May 24, 2001 | Mitchell Energy Company L.P. | Thompson, Mildred #10 | 12,300 | 29331416 |
| 509323 | May 23, 2001 | May 23, 2001 | Marathon Oil Company | King Unit #4 | 10,000 | 29331417 |
| 509226 | May 22, 2001 | May 22, 2001 | Mitchell Energy Company L.P. | Everett #9 | 12,400 | 29331414 |
| 509225 | May 22, 2001 | May 22, 2001 | Mitchell Energy Company L.P. | Thompson, Mildred "A" #3 | 12,500 | 29331415 |
| 508021 | May 22, 2001 | May 22, 2001 | Cross Timbers Operating Company | Lyons Gas Unit No. 1 #10 | 14,000 | 29331406 |
| 508785 | May 11, 2001 | May 11, 2001 | Cross Timbers Operating Company | Standley Gas Unit No. 1 #3 | 14,000 | 29331412 |
| 508784 | May 11, 2001 | May 11, 2001 | Cross Timbers Operating Company | Gibson #4 | 14,000 | 29331413 |
| 508437 | May 2, 2001 | May 2, 2001 | Marathon Oil Company | Yarbrough Trust #10 | 10,000 | 29331411 |
| 508229 | Apr 26, 2001 | Apr 26, 2001 | Mitchell Energy Company L.P. | Alexander, Toni #1 | 11,200 | 29331410 |
| 508020 | Apr 24, 2001 | Apr 24, 2001 | Cross Timbers Operating Company | Lyons Gas Unit No. 1 #8 | 14,000 | 29331407 |
| 508014 | Apr 24, 2001 | Apr 24, 2001 | Mitchell Energy Company L.P. | J. C. Prichard G. U. #2 | 11,200 | 29331408 |
| 508013 | Apr 24, 2001 | Apr 24, 2001 | Mitchell Energy Company L.P. | Jackson, James W. Jr. #6 | 11,450 | 29331409 |
| 508038 | Apr 20, 2001 | Apr 20, 2001 | St. Mary Land & Exploration Co. | Wilson #12 | 9,450 | 29331405 |
| 507938 | Apr 20, 2001 | Apr 20, 2001 | Cross Timbers Operating Company | Lyons Gas Unit No. 1 #9 | 14,000 | 29331404 |
| 507946 | Apr 19, 2001 | Apr 19, 2001 | Mitchell Energy Company L.P. | Rothermel, Paul #8 | 11,750 | 29331403 |
| 507851 | Apr 19, 2001 | Apr 19, 2001 | Cross Timbers Operating Company | Jacoby-Harris Gas Unit No. 1 #2 | 14,000 | 29331401 |
| 507850 | Apr 18, 2001 | Apr 18, 2001 | Cross Timbers Operating Company | Triple H Ranch Gas Unit No. 1 #5 | 14,000 | 29331402 |
| 507715 | Apr 12, 2001 | Apr 12, 2001 | Mitchell Energy Company L.P. | J. C. Prichard G. U. #3 | 11,200 | 29331400 |
| 507635 | Apr 11, 2001 | Apr 11, 2001 | Cross Timbers Operating Company | Jacoby-Harris Gas Unit #1 #1 | 13,378 | 29330135 |
| 507634 | Apr 11, 2001 | Apr 11, 2001 | Cross Timbers Operating Company | Phillips Gas Unit "A" #2 | 9,521 | 29331007 |
| 507633 | Apr 11, 2001 | Apr 11, 2001 | Cross Timbers Operating Company | Perlitz Gas Unit No. 1 #2 | 9,522 | 29330989 |
| 507550 | Apr 9, 2001 | Apr 9, 2001 | Mitchell Energy Company L.P. | Muse-Tucker #3 | 11,900 | 29331399 |
| 507433 | Apr 5, 2001 | Apr 5, 2001 | Mitchell Energy Company L.P. | Jackson, James W. Jr. #7 | 11,350 | 29331398 |
| 507150 | Mar 29, 2001 | Mar 29, 2001 | Marathon Oil Company | Yarbrough Trust #5 | 9,875 | 29331397 |
| 507010 | Mar 28, 2001 | Mar 28, 2001 | Txu Lone Star Pipeline | GB M18-02 #2 | 300 | 29331396 |
| 507006 | Mar 28, 2001 | Mar 28, 2001 | Txu Lone Star Pipeline | GB M11-16 #16 | 300 | 29331395 |
| 507004 | Mar 28, 2001 | Mar 28, 2001 | Txu Lone Star Pipeline | GB M11-12 #12 | 300 | 29331394 |
| 507003 | Mar 28, 2001 | Mar 28, 2001 | Txu Lone Star Pipeline | GB M11-15 #15 | 300 | 29331393 |
| 506796 | Mar 21, 2001 | Mar 21, 2001 | Mitchell Energy Company L.P. | R. E. Stone Gas Unit #5 | 11,500 | 29331392 |
| 506795 | Mar 21, 2001 | Mar 21, 2001 | Mitchell Energy Company L.P. | Clifton, Arthur #4 | 11,900 | 29331391 |
| 505899 | Mar 13, 2001 | Mar 13, 2001 | Marathon Oil Company | Yarbrough Trust #2 | 8,213 | 29331132 |
| 506276 | Mar 9, 2001 | Mar 9, 2001 | Mitchell Energy Company L.P. | Burleson-McBay GU #6 | 11,900 | 29331390 |
| 505982 | Mar 6, 2001 | Mar 6, 2001 | Mitchell Energy Company L.P. | Raines, B. J. #9 | 11,900 | 29331388 |
| 504231 | Mar 6, 2001 | Mar 6, 2001 | Valence Operating Company | Wilson "V" #1 | 8,400 | 29330637 |
| 505978 | Mar 1, 2001 | Mar 1, 2001 | Mitchell Energy Company L.P. | A. R. Easterling et al Unit #6 | 12,000 | 29331387 |
| 505784 | Feb 26, 2001 | Feb 26, 2001 | Marathon Oil Company | Mason, Lula #15 | 9,850 | 29331386 |
| 505669 | Feb 23, 2001 | Feb 23, 2001 | Phillips Petroleum Company | Wilson, T. L. #1 | 10,000 | 29331385 |
| 505694 | Feb 22, 2001 | Feb 22, 2001 | Sklar-Tex L.L.C. | Parker #1 | 9,400 | 29331384 |
| 505679 | Feb 22, 2001 | Feb 22, 2001 | Mitchell Energy Company L.P. | Vance, Mae B. "A" #4 | 11,300 | 29331383 |
| 505309 | Feb 14, 2001 | Feb 14, 2001 | Mitchell Energy Company L.P. | McClaran, J. C. #2 | 11,050 | 29331382 |
| 504935 | Feb 5, 2001 | Feb 5, 2001 | Mitchell Energy Company L.P. | Spence, Ralph #6 | 11,300 | 29331381 |
| 504754 | Jan 31, 2001 | Jan 31, 2001 | Mitchell Energy Company L.P. | Croft, M. V. #4 | 11,500 | 29331380 |
| 504455 | Jan 24, 2001 | Jan 24, 2001 | Apache Corporation | Coyote Creek #1 | 10,700 | 29331379 |
| 504076 | Jan 16, 2001 | Jan 16, 2001 | Mitchell Energy Company L.P. | Smythe, E. L. #10 | 11,900 | 29331378 |
| 504054 | Jan 16, 2001 | Jan 16, 2001 | Marathon Oil Company | Mason, Lula #14 | 10,800 | 29331377 |
| 503957 | Jan 11, 2001 | Jan 11, 2001 | Mitchell Energy Company L.P. | Presley Sadler Gas Unit #8 | 11,700 | 29331376 |
| 503136 | Dec 15, 2000 | Dec 15, 2000 | Mitchell Energy Corporation | Raines, B. J. #8 | 11,750 | 29331375 |
| 503010 | Dec 14, 2000 | Dec 14, 2000 | Valence Operating Company | Wilson "V" #2 | 8,400 | 29331253 |
| 502830 | Dec 8, 2000 | Dec 8, 2000 | Apache Corporation | Muse, M. #2 | 11,807 | 29331202 |
| 502830Amendment | Dec 8, 2000 | Dec 8, 2000 | Apache Corporation | Muse, M. #2 | 11,807 | 29331202 |
| 502731 | Dec 6, 2000 | Dec 6, 2000 | Mitchell Energy Corporation | Easterling, A. R. et al Unit #5 | 12,000 | 29331374 |
| 502548 | Dec 5, 2000 | Dec 5, 2000 | Valence Operating Company | Schultz "E" #9 | 11,900 | 29331373 |
| 502429 | Dec 1, 2000 | Dec 1, 2000 | Mitchell Energy Corporation | Clancy, Joe A. #5 | 11,350 | 29331372 |
| 502306 | Nov 22, 2000 | Nov 22, 2000 | EOG Resources, Inc. | Sadler-Thomas Unit #1 | 10,000 | 29331371 |
| 502156 | Nov 21, 2000 | Nov 21, 2000 | Phillips Petroleum Company | Bradley "A" #9 | 10,000 | 29331370 |
| 502093 | Nov 17, 2000 | Nov 17, 2000 | Marathon Oil Company | Mason, Lula #9 | 9,800 | 29331369 |
| 501108 | Nov 17, 2000 | Nov 17, 2000 | Rabalais, F.W. Inc. | Kott #2 | 11,250 | 29331366 |
| 501709 | Nov 7, 2000 | Nov 7, 2000 | Mitchell Energy Corporation | L. O. Nettles Gas Unit #3 | 11,800 | 29331368 |
| 501109 | Oct 27, 2000 | Oct 27, 2000 | Rabalais, F.W. Inc. | Hunt, Virginia #2 | 10,750 | 29331367 |
| 500961 | Oct 20, 2000 | Oct 20, 2000 | St. Mary Land & Exploration Co. | Reagan Estate #1 | 8,350 | 29331365 |
| 500961Amendment | Oct 20, 2000 | Oct 20, 2000 | St. Mary Land & Exploration Co. | Reagan Estate #1 | 9,400 | 29331365 |
| 500961Amendment | Oct 20, 2000 | Oct 20, 2000 | St. Mary Land & Exploration Co. | Reagan Estate #1 | 9,400 | 29331365 |
| 500883 | Oct 18, 2000 | Oct 18, 2000 | Phillips Petroleum Company | Bradley "a" SWD #1 | 6,450 | 29331363 |
| 500882 | Oct 18, 2000 | Oct 18, 2000 | Phillips Petroleum Company | Bradley "A" #8 | 10,000 | 29331364 |
| 500603 | Oct 10, 2000 | Oct 10, 2000 | Marathon Oil Company | Henderson, Hazel #6 | 11,500 | 29331362 |
| 500440 | Oct 5, 2000 | Oct 5, 2000 | Mitchell Energy Corporation | Presley Sadler Gas Unit #7 | 11,700 | 29331361 |
| 500387 | Oct 5, 2000 | Oct 5, 2000 | Mitchell Energy Corporation | Ferguson Gas Unit #6 | 11,700 | 29331360 |
| 500387Amendment | Oct 5, 2000 | Oct 5, 2000 | Mitchell Energy Company L.P. | Ferguson Gas Unit #6 | 11,700 | 29331360 |
| 500378 | Oct 4, 2000 | Oct 4, 2000 | Marathon Oil Company | Archer-Battle #6 | 11,500 | 29331359 |
| 500340 | Oct 4, 2000 | Oct 4, 2000 | Mitchell Energy Corporation | Ferguson Gas Unit #5 | 11,600 | 29331358 |
| 499315 | Sep 7, 2000 | Sep 7, 2000 | Sklar-Tex L.L.C. | Jackson #2 | 9,500 | 29331357 |
| 498151 | Sep 6, 2000 | Sep 6, 2000 | Texaco E & P Inc. | Georgia Cox Gas Unit #9 | 10,400 | 29331350 |
| 498958 | Aug 28, 2000 | Aug 28, 2000 | St. Mary Land & Exploration Co. | Reagan, Lullene #1 | 9,400 | 29331356 |
| 498889 | Aug 28, 2000 | Aug 28, 2000 | Texaco E & P Inc. | Georgia Cox Gas Unit #1 | 7,463 | 29300616 |
| 498628 | Aug 25, 2000 | Aug 25, 2000 | Phillips Petroleum Company | Bradley "A" #2 | 9,700 | 29331290 |
| 498644 | Aug 22, 2000 | Aug 22, 2000 | Mitchell Energy Corporation | Laurence, R. A. #7 | 11,400 | 29331355 |
| 498555 | Aug 17, 2000 | Aug 17, 2000 | Marathon Oil Company | Yarbrough Trust #7 | 11,500 | 29331354 |