| 483240 | Mar 11, 1999 | Mar 11, 1999 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #82 | 12,250 | 33930967 |
| 483239 | Mar 11, 1999 | Mar 11, 1999 | Mitchell Energy Corporation | Wise | W. J. Shepherd Gas Unit #3 | 7,350 | 49734347 |
| 483209 | Mar 10, 1999 | Mar 10, 1999 | Mitchell Energy Corporation | Tarrant | R. M. Alliston Gas Unit #1 | 7,500 | 43930180 |
| 483208 | Mar 10, 1999 | Mar 10, 1999 | Mitchell Energy Corporation | Montgomery | Butler, Lillie K. #5 | 12,300 | 33930966 |
| 483207 | Mar 10, 1999 | Mar 10, 1999 | Mitchell Energy Corporation | Wise | Rowan Estate Trust #2 | 8,200 | 49734345 |
| 483032 | Mar 4, 1999 | Mar 4, 1999 | Mitchell Energy Corporation | Wise | Pavillard, Albert #4 | 7,100 | 49733738 |
| 482996 | Mar 1, 1999 | Mar 1, 1999 | Mitchell Energy Corporation | Wise | Txi Gas Unit #4 | 7,360 | 49734346 |
| 482944 | Feb 26, 1999 | Feb 26, 1999 | Mitchell Energy Corporation | Limestone | Thompson, Mildred #9 | 12,300 | 29331293 |
| 482921 | Feb 25, 1999 | Feb 25, 1999 | Mitchell Energy Corporation | McMullen | Brite, Thelma #1 | 6,500 | 31133542 |
| 482920 | Feb 25, 1999 | Feb 25, 1999 | Mitchell Energy Corporation | McMullen | Dolan #1 | 6,350 | 31133541 |
| 482889 | Feb 23, 1999 | Feb 23, 1999 | Mitchell Energy Corporation | McMullen | Hundley #1 | 6,100 | 31133540 |
| 482846 | Feb 19, 1999 | Feb 19, 1999 | Mitchell Energy Corporation | Denton | Dcco 1 - Sullivan, P. G. "A" #6C | 8,400 | 12130692 |
| 482845 | Feb 19, 1999 | Feb 19, 1999 | Mitchell Energy Corporation | Denton | Dcco 1 - Sullivan, P. G. "A" #5C | 8,325 | 12130691 |
| 482786 | Feb 18, 1999 | Feb 18, 1999 | Mitchell Energy Corporation | Denton | Dcco 2 - P. G. Sullivan #7E | 8,250 | 12130690 |
| 482785 | Feb 18, 1999 | Feb 18, 1999 | Mitchell Energy Corporation | Wise | Acola, Sam "B" #4 | 7,750 | 49734344 |
| 482378 | Feb 2, 1999 | Feb 2, 1999 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #80 | 12,250 | 33930965 |
| 482378Amendment | Feb 2, 1999 | Feb 2, 1999 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #80 | 12,250 | 33930965 |
| 482374 | Feb 1, 1999 | Feb 1, 1999 | Mitchell Energy Corporation | Wise | Griffeth Gas Unit #7 | 8,100 | 49734342 |
| 482339 | Jan 28, 1999 | Jan 28, 1999 | Mitchell Energy Corporation | Wise | Improvement District #1 | 5,804 | 49733541 |
| 482339Amendment | Jan 28, 1999 | Jan 28, 1999 | Mitchell Energy Corporation | Wise | Improvement District #1 | 5,804 | 49733541 |
| 482311 | Jan 27, 1999 | Jan 27, 1999 | Mitchell Energy Corporation | Denton | S. H. Griffin Estate #5 | 8,450 | 12130689 |
| 482310 | Jan 27, 1999 | Jan 27, 1999 | Mitchell Energy Corporation | Denton | Dcco 2 #6E | 8,300 | 12130688 |
| 482232 | Jan 26, 1999 | Jan 26, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Miller B-1 #7K | 7,850 | 49734341 |
| 482116 | Jan 22, 1999 | Jan 22, 1999 | Mitchell Energy Corporation | Jack | Robertson-Deats #1 | 5,025 | 23730386 |
| 482164 | Jan 21, 1999 | Jan 21, 1999 | Mitchell Energy Corporation | Denton | Shoop, Glenn P. "B" #2 | 8,300 | 12130687 |
| 482051 | Jan 20, 1999 | Jan 20, 1999 | Mitchell Energy Corporation | Jack | Shawver, E. J. #1 | 6,175 | 23700257 |
| 490825 | Jan 6, 1999 | Jan 6, 1999 | Mitchell Energy Corporation | Wise | Pavillard, Albert "A" #8 | 7,450 | 49734475 |
| 481911 | Jan 6, 1999 | Jan 6, 1999 | Mitchell Energy Corporation | Fort Bend | Wendt Sisters #1 | 9,700 | 15732032 |
| 481828 | Dec 29, 1998 | Dec 29, 1998 | Mitchell Energy Corporation | Denton | Kathy Keele GU #2 | 8,435 | 12130686 |
| 481464 | Dec 28, 1998 | Dec 28, 1998 | Mitchell Energy Corporation | Wise | Florida, L. D. et Al #1 | 7,500 | 49701837 |
| 481628 | Dec 22, 1998 | Dec 22, 1998 | Mitchell Energy Corporation | Denton | Kathy Keele GU #3 | 8,550 | 12130685 |
| 481588 | Dec 17, 1998 | Dec 17, 1998 | Mitchell Energy Corporation | Freestone | Evans, A. O. Jr. #1 | 13,100 | 16131548 |
| 481366 | Dec 8, 1998 | Dec 8, 1998 | Mitchell Energy Corporation | Madison | Magness #2 | 9,130 | 31330526 |
| 481342 | Dec 8, 1998 | Dec 8, 1998 | Mitchell Energy Corporation | Wise | Hoyl-McCurdy #1 | 8,000 | 49734330 |
| 481321 | Dec 7, 1998 | Dec 7, 1998 | Mitchell Energy Corporation | Wise | Gadberry-Phillips (SA) #1 | 4,900 | 49734329 |
| 481281 | Dec 4, 1998 | Dec 4, 1998 | Mitchell Energy Corporation | Denton | James Baker GU #9 | 8,350 | 12130683 |
| 481271 | Dec 3, 1998 | Dec 3, 1998 | Mitchell Energy Corporation | Denton | James Baker GU #8 | 8,300 | 12130682 |
| 481270 | Dec 3, 1998 | Dec 3, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1013 | 7,680 | 08900825 |
| 481270Amendment | Dec 3, 1998 | Dec 3, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1013 | 7,680 | 08900825 |
| 481236 | Dec 2, 1998 | Dec 2, 1998 | Mitchell Energy Corporation | Wise | USA 237-21 #1 | 7,825 | 49734327 |
| 481236Amendment | Dec 2, 1998 | Dec 2, 1998 | Mitchell Energy Corporation | Wise | USA 237-21 #1 | 8,250 | 49734327 |
| 481236Amendment | Dec 2, 1998 | Dec 2, 1998 | Mitchell Energy Corporation | Wise | USA 237-21 #1 | 8,250 | 49734327 |
| 481191 | Nov 30, 1998 | Nov 30, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1018 | 8,370 | 08931723 |
| 480916 | Nov 20, 1998 | Nov 20, 1998 | Mitchell Energy Corporation | Wise | Kaker, G. "B" #2 | 6,195 | 49733716 |
| 480982 | Nov 18, 1998 | Nov 18, 1998 | Mitchell Energy Corporation | Wise | Sewell Ranch, Inc. "B" #4 | 7,500 | 49734321 |
| 480957 | Nov 18, 1998 | Nov 18, 1998 | Mitchell Energy Corporation | Wise | Gadberry, H. C. (SA) #27 | 6,300 | 49734320 |
| 480836 | Nov 18, 1998 | Nov 18, 1998 | Mitchell Energy Corporation | Wise | Thurmond, Joe "A" #2 | 8,225 | 49734319 |
| 480855 | Nov 16, 1998 | Nov 16, 1998 | Mitchell Energy Corporation | Wise | Pavillard, Albert #5 | 7,400 | 49734316 |
| 480854 | Nov 13, 1998 | Nov 13, 1998 | Mitchell Energy Corporation | Wise | Griffeth Gas Unit #6 | 7,700 | 49734317 |
| 480854Amendment | Nov 13, 1998 | Nov 13, 1998 | Mitchell Energy Corporation | Wise | Griffeth Gas Unit #6 | 8,000 | 49734317 |
| 480797 | Nov 12, 1998 | Nov 12, 1998 | Mitchell Energy Corporation | Montgomery | Pinehurst Gas Unit #14 | 10,630 | 33930899 |
| 480640 | Nov 12, 1998 | Nov 12, 1998 | Mitchell Energy Corporation | Jack | Morris-Kempner #1 | 5,915 | 23709159 |
| 480639 | Nov 12, 1998 | Nov 12, 1998 | Mitchell Energy Corporation | Jack | Morris, R. L. "A" #1 | 6,096 | 23700717 |
| 480587 | Nov 4, 1998 | Nov 4, 1998 | Mitchell Energy Corporation | Palo Pinto | Fearis, Sallie #2 | 1,808 | 36300828 |
| 480634 | Nov 3, 1998 | Nov 3, 1998 | Mitchell Energy Corporation | Wise | Desolee M. Kyle Gas Unit #1 | 7,400 | 49734311 |
| 480445 | Oct 28, 1998 | Oct 28, 1998 | Mitchell Energy Corporation | Wise | Peterson, A. L. #6 | 8,150 | 49734309 |
| 480430 | Oct 26, 1998 | Oct 26, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #505 | 8,100 | 08900059 |
| 480110 | Oct 13, 1998 | Oct 13, 1998 | Mitchell Energy Corporation | Wise | Adele Clough GU "A" #6 | 7,700 | 49734306 |
| 479393 | Oct 9, 1998 | Oct 9, 1998 | Mitchell Energy Corporation | Willacy | Geis, H. #2 | 9,580 | 48930688 |
| 479959 | Oct 7, 1998 | Oct 7, 1998 | Mitchell Energy Corporation | Denton | Blakely Estate Gas Unit "C" #1 | 7,750 | 12130678 |
| 479777 | Sep 29, 1998 | Sep 29, 1998 | Mitchell Energy Corporation | Wise | Gasperson, E. G. #4 | 6,850 | 49734304 |
| 479681 | Sep 24, 1998 | Sep 24, 1998 | Mitchell Energy Corporation | Wise | L. B. Wilson GU #2H | 7,100 | 49734303 |
| 479680 | Sep 24, 1998 | Sep 24, 1998 | Mitchell Energy Corporation | Wise | Crabtree #4 | 8,200 | 49734302 |
| 479466 | Sep 21, 1998 | Sep 21, 1998 | Mitchell Energy Corporation | Colorado | Gordon, Tulane #1 | 11,300 | 08932094 |
| 479474 | Sep 16, 1998 | Sep 16, 1998 | Mitchell Energy Corporation | Wise | Improvement District #1 | 5,804 | 49733541 |
| 479451 | Sep 15, 1998 | Sep 15, 1998 | Mitchell Energy Corporation | Wise | Crabtree #3 | 8,300 | 49734301 |
| 479029 | Sep 14, 1998 | Sep 14, 1998 | Mitchell Energy Corporation | Jack | Halsell, J. R. #6 | 4,900 | 23701984 |
| 479339 | Sep 9, 1998 | Sep 9, 1998 | Mitchell Energy Corporation | Wise | Donaldson-Smith #4 | 7,050 | 49734299 |
| 479299 | Sep 8, 1998 | Sep 8, 1998 | Mitchell Energy Corporation | Jack | Carpenter-Martin #1H | 4,900 | 23738423 |
| 479298 | Sep 8, 1998 | Sep 8, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1011 | 8,330 | 08900305 |
| 479220 | Sep 2, 1998 | Sep 2, 1998 | Mitchell Energy Corporation | Hidalgo | De Cavazos, R. L. #3 | 9,500 | 21532576 |
| 479070 | Aug 28, 1998 | Aug 28, 1998 | Mitchell Energy Corporation | Denton | Thatcher, Mattie #2 | 8,300 | 12131127 |
| 479054 | Aug 27, 1998 | Aug 27, 1998 | Mitchell Energy Corporation | Montgomery | King, R. V. "A" #2 | 12,200 | 33930960 |
| 478833 | Aug 19, 1998 | Aug 19, 1998 | Mitchell Energy Corporation | Wise | W. L. Mackey GU 2 #11 | 7,400 | 49734294 |
| 478820 | Aug 18, 1998 | Aug 18, 1998 | Mitchell Energy Corporation | Denton | James Baker GU #7 | 8,250 | 12130675 |
| 478726 | Aug 17, 1998 | Aug 17, 1998 | Mitchell Energy Corporation | Palo Pinto | Green, J. J. #1 | 4,535 | 36300018 |
| 478720 | Aug 14, 1998 | Aug 14, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1017 | 9,260 | 08931724 |
| 478680 | Aug 12, 1998 | Aug 12, 1998 | Mitchell Energy Corporation | Jack | Halsell, J. R. "C" #1 | 4,604 | 23700372 |
| 478389 | Aug 10, 1998 | Aug 10, 1998 | Mitchell Energy Corporation | Wise | Sewell Ranch "A" #3 | 7,600 | 49734291 |
| 478490 | Aug 7, 1998 | Aug 7, 1998 | Mitchell Energy Corporation | Palo Pinto | Green, J. J. #1 | 4,535 | 36300018 |
| 478517 | Aug 5, 1998 | Aug 5, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #508 | 10,700 | 08932085 |
| 478360 | Jul 30, 1998 | Jul 30, 1998 | Mitchell Energy Corporation | Limestone | Laurence, R. A. #5 | 9,350 | 29331221 |
| 478353 | Jul 29, 1998 | Jul 29, 1998 | Mitchell Energy Corporation | Wise | Wcco 4- J. P. Fitch #7A | 7,600 | 49734289 |
| 478273 | Jul 27, 1998 | Jul 27, 1998 | Mitchell Energy Corporation | Wise | Wcco 4-Morris, Ada #9F | 8,000 | 49734287 |
| 478012 | Jul 27, 1998 | Jul 27, 1998 | Mitchell Energy Corporation | Limestone | Whisenhunt, H. E. #2 | 7,700 | 29331280 |
| 478012Amendment | Jul 27, 1998 | Jul 27, 1998 | Mitchell Energy Corporation | Limestone | Whisenhunt, H. E. #2 | 7,700 | 29331280 |
| 478232 | Jul 24, 1998 | Jul 24, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1009 | 8,280 | 08900037 |
| 478150 | Jul 21, 1998 | Jul 21, 1998 | Mitchell Energy Corporation | Wise | Acola, Sam "A" #6 | 7,700 | 49734284 |
| 478148 | Jul 21, 1998 | Jul 21, 1998 | Mitchell Energy Corporation | Limestone | Hill, Laura #4 | 11,200 | 29331284 |
| 478148Amendment | Jul 21, 1998 | Jul 21, 1998 | Mitchell Energy Corporation | Limestone | Hill, Laura #4 | 11,200 | 29331284 |
| 478041 | Jul 21, 1998 | Jul 21, 1998 | Mitchell Energy Corporation | Palo Pinto | Hinkson, Laura #1 | 4,285 | 36300146 |
| 478084 | Jul 20, 1998 | Jul 20, 1998 | Mitchell Energy Corporation | Wise | Clough, Michael #3 | 8,000 | 49734283 |
| 478026 | Jul 20, 1998 | Jul 20, 1998 | Mitchell Energy Corporation | Limestone | Jackson, James W. Jr. #5 | 11,250 | 29331279 |
| 477861 | Jul 13, 1998 | Jul 13, 1998 | Mitchell Energy Corporation | Wise | Timm, Tullie #4 | 7,550 | 49734279 |
| 477859 | Jul 13, 1998 | Jul 13, 1998 | Mitchell Energy Corporation | Wise | Askey, W. A. #3 | 8,050 | 49734280 |
| 477827 | Jul 10, 1998 | Jul 10, 1998 | Mitchell Energy Corporation | Jack | Durham, W. J. "B" #5 | 5,725 | 23737747 |
| 477827Amendment | Jul 10, 1998 | Jul 10, 1998 | Mitchell Energy Corporation | Jack | Durham, W. J. "B" #5 | 5,725 | 23737747 |
| 477781 | Jul 8, 1998 | Jul 8, 1998 | Mitchell Energy Corporation | Wise | McCurdy, Floyd #5 | 8,050 | 49734277 |
| 476237 | Jul 8, 1998 | Jul 8, 1998 | Mitchell Energy Corporation | Marion | Brooks Unit (Hall Estate) #7 | 9,600 | 31530843 |
| 477740 | Jul 7, 1998 | Jul 7, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1703 | 8,680 | 08900310 |