| 486401 | Aug 5, 1999 | Aug 5, 1999 | Mitchell Energy Corporation | Wise | P. K. Troxell GU #6 | 8,100 | 49734417 |
| 486237 | Jul 30, 1999 | Jul 30, 1999 | Mitchell Energy Corporation | Freestone | A. O. Evans, Jr. GU #3 | 12,800 | 16131615 |
| 486250 | Jul 29, 1999 | Jul 29, 1999 | Mitchell Energy Corporation | Freestone | A. O. Evans, Jr. GU #5 | 13,600 | 16131614 |
| 486201 | Jul 29, 1999 | Jul 29, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #502 | 8,216 | 08900061 |
| 486200 | Jul 29, 1999 | Jul 29, 1999 | Mitchell Energy Corporation | Wise | Adele Clough GU 2 #14 | 7,680 | 49734230 |
| 486208 | Jul 28, 1999 | Jul 28, 1999 | Mitchell Energy Corporation | Wise | R. N. Williford Gas Unit #3 | 6,400 | 49734414 |
| 486208Amendment | Jul 28, 1999 | Jul 28, 1999 | Mitchell Energy Corporation | Wise | Williford, R. N. "A" #1 | 6,400 | 49734414 |
| 486150 | Jul 27, 1999 | Jul 27, 1999 | Mitchell Energy Corporation | Wise | Garrett, R. S. "B" #4 | 7,750 | 49734413 |
| 486149 | Jul 27, 1999 | Jul 27, 1999 | Mitchell Energy Corporation | Wise | Garrett, R. S. "B" #3 | 7,750 | 49734412 |
| 486148 | Jul 27, 1999 | Jul 27, 1999 | Mitchell Energy Corporation | Wise | Garrett, Rufus #4 | 7,800 | 49734411 |
| 486107 | Jul 26, 1999 | Jul 26, 1999 | Mitchell Energy Corporation | Denton | Faye S. Tally Gas Unit #2 | 7,950 | 12130707 |
| 486106 | Jul 26, 1999 | Jul 26, 1999 | Mitchell Energy Corporation | Limestone | J. E. Engram Unit #5 | 10,200 | 29331113 |
| 486105 | Jul 26, 1999 | Jul 26, 1999 | Mitchell Energy Corporation | Robertson | Rice, Mary #1 | 12,550 | 39530250 |
| 486014 | Jul 21, 1999 | Jul 21, 1999 | Mitchell Energy Corporation | Limestone | Kerr, R. L. #2 | 10,960 | 29331086 |
| 486013 | Jul 21, 1999 | Jul 21, 1999 | Mitchell Energy Corporation | Lavaca | Walters, Dorothy #1 | 14,230 | 28531440 |
| 486012 | Jul 21, 1999 | Jul 21, 1999 | Mitchell Energy Corporation | Jack | Peavy, S. H. Jr. #1 | 5,379 | 23730636 |
| 486012Amendment | Jul 21, 1999 | Jul 21, 1999 | Mitchell Energy Corporation | Jack | Peavy, S. H. Jr. #1 | 5,379 | 23730636 |
| 486017 | Jul 20, 1999 | Jul 20, 1999 | Mitchell Energy Corporation | Denton | Finlayson, O.T. Estate #2 | 7,850 | 12130706 |
| 486016 | Jul 20, 1999 | Jul 20, 1999 | Mitchell Energy Corporation | Wise | P. K. Troxell GU #5 | 8,050 | 49734410 |
| 485128 | Jul 20, 1999 | Jul 20, 1999 | Mitchell Energy Corporation | Leon | Afwdu #403 | 8,800 | 28931299 |
| 485964 | Jul 19, 1999 | Jul 19, 1999 | Mitchell Energy Corporation | Wise | Maggie Spain Gas Unit 1 #4 | 8,150 | 49734408 |
| 485963 | Jul 19, 1999 | Jul 19, 1999 | Mitchell Energy Corporation | Wise | Maggie Spain Gas Unit 1 #3 | 8,150 | 49734407 |
| 485919 | Jul 16, 1999 | Jul 16, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Miller, W. M. #8E | 7,800 | 49734402 |
| 485918 | Jul 16, 1999 | Jul 16, 1999 | Mitchell Energy Corporation | Wise | Finlayson, O. T. "A" #1 | 7,800 | 49734403 |
| 485917 | Jul 16, 1999 | Jul 16, 1999 | Mitchell Energy Corporation | Wise | Johnson, L. B. Estate #2 | 7,800 | 49734404 |
| 485917Amendment | Jul 16, 1999 | Jul 16, 1999 | Mitchell Energy Corporation | Wise | Finlayson, O. T. "A" #2 | 7,800 | 49734404 |
| 485290 | Jul 12, 1999 | Jul 12, 1999 | Mitchell Energy Corporation | Wise | Acola, Sam "A" #7 | 7,650 | 49734384 |
| 485563 | Jun 30, 1999 | Jun 30, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Morris, Ada #10F | 7,850 | 49734395 |
| 485562 | Jun 30, 1999 | Jun 30, 1999 | Mitchell Energy Corporation | Denton | Tally #2 | 8,000 | 12130705 |
| 485539 | Jun 29, 1999 | Jun 29, 1999 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #67 | 9,600 | 33930973 |
| 485538 | Jun 29, 1999 | Jun 29, 1999 | Mitchell Energy Corporation | Wise | Cox, Pearl #5 | 8,150 | 49734394 |
| 485536 | Jun 29, 1999 | Jun 29, 1999 | Mitchell Energy Corporation | Wise | Peterson, A. L. #7 | 8,100 | 49734392 |
| 485535 | Jun 29, 1999 | Jun 29, 1999 | Mitchell Energy Corporation | Wise | Wcco 1 - Stevenson, D. #6B | 8,250 | 49734393 |
| 484933 | Jun 28, 1999 | Jun 28, 1999 | Mitchell Energy Corporation | Willacy | Harvey Geis Unit #1 | 10,216 | 48900536 |
| 485380 | Jun 22, 1999 | Jun 22, 1999 | Mitchell Energy Corporation | Wise | Greines, M. #3 | 6,300 | 49734391 |
| 485379 | Jun 22, 1999 | Jun 22, 1999 | Mitchell Energy Corporation | Denton | Naler, Mae C. #6 | 8,400 | 12130704 |
| 485321 | Jun 18, 1999 | Jun 18, 1999 | Mitchell Energy Corporation | Wise | Slimp, J. #7 | 7,500 | 49734389 |
| 485317 | Jun 18, 1999 | Jun 18, 1999 | Mitchell Energy Corporation | Wise | T. D. Lester Unit #3 | 6,250 | 49734388 |
| 485289 | Jun 17, 1999 | Jun 17, 1999 | Mitchell Energy Corporation | Wise | Kaker #3 | 6,200 | 49734387 |
| 485288 | Jun 17, 1999 | Jun 17, 1999 | Mitchell Energy Corporation | Wise | Padfield, Dean #4 | 6,350 | 49734386 |
| 485287 | Jun 17, 1999 | Jun 17, 1999 | Mitchell Energy Corporation | Wise | Thurmond, Joe "A" #3 | 8,200 | 49734385 |
| 485258 | Jun 16, 1999 | Jun 16, 1999 | Mitchell Energy Corporation | Wise | Ham, J. A. #6 | 8,100 | 49734383 |
| 485258Amendment | Jun 16, 1999 | Jun 16, 1999 | Mitchell Energy Corporation | Wise | Ham, J. A. #6 | 8,100 | 49734383 |
| 485257 | Jun 16, 1999 | Jun 16, 1999 | Mitchell Energy Corporation | Denton | F. M. Edwards Gas Unit #1 | 8,750 | 12130703 |
| 485101 | Jun 15, 1999 | Jun 15, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1018 | 8,370 | 08931723 |
| 484972 | Jun 7, 1999 | Jun 7, 1999 | Mitchell Energy Corporation | Limestone | Bettinger #1 | 9,340 | 29331109 |
| 484987 | Jun 4, 1999 | Jun 4, 1999 | Mitchell Energy Corporation | Wise | Askey -B- #5 | 8,150 | 49734376 |
| 484986 | Jun 4, 1999 | Jun 4, 1999 | Mitchell Energy Corporation | Wise | S. F. Peek GU "A" #6 | 6,250 | 49734377 |
| 484932 | Jun 2, 1999 | Jun 2, 1999 | Mitchell Energy Corporation | Robertson | Loreant, Clifford #2 | 11,900 | 39530587 |
| 484907 | Jun 1, 1999 | Jun 1, 1999 | Mitchell Energy Corporation | Wise | Slimp, J. #6 | 7,500 | 49734375 |
| 484906 | Jun 1, 1999 | Jun 1, 1999 | Mitchell Energy Corporation | Wise | J. J. Frank Gas Unit "B" #2 | 7,600 | 49734374 |
| 484863 | Jun 1, 1999 | Jun 1, 1999 | Mitchell Energy Corporation | Freestone | A. O. Evans, Jr. GU #4 | 12,800 | 16131593 |
| 484803 | May 26, 1999 | May 26, 1999 | Mitchell Energy Corporation | Wise | Helms, L. V. #2 | 8,260 | 49730285 |
| 484781 | May 25, 1999 | May 25, 1999 | Mitchell Energy Corporation | Montgomery | R. V. King GU "B" #4 | 15,200 | 33930972 |
| 484711 | May 21, 1999 | May 21, 1999 | Mitchell Energy Corporation | Throckmorton | Anp -136- #1 | 5,320 | 44735823 |
| 483803 | May 21, 1999 | May 21, 1999 | Mitchell Energy Corporation | Marion | J. A. Neal Unit #4 | 9,000 | 31530850 |
| 483727 | May 21, 1999 | May 21, 1999 | Mitchell Energy Corporation | Marion | Brooks Unit (Hall Estate) #8 | 9,000 | 31530848 |
| 484666 | May 20, 1999 | May 20, 1999 | Mitchell Energy Corporation | Wise | Logan-Miller #5 | 7,800 | 49734370 |
| 484665 | May 20, 1999 | May 20, 1999 | Mitchell Energy Corporation | Montgomery | Pinehurst Gas Unit #16 | 9,800 | 33930918 |
| 484641 | May 20, 1999 | May 20, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #509 | 10,600 | 08932141 |
| 484640 | May 20, 1999 | May 20, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #606 | 10,600 | 08932140 |
| 484644 | May 19, 1999 | May 19, 1999 | Mitchell Energy Corporation | Montgomery | Pinehurst Gas Unit #8 | 12,700 | 33930858 |
| 484620 | May 18, 1999 | May 18, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1016D | 8,200 | 08900808 |
| 484619 | May 18, 1999 | May 18, 1999 | Mitchell Energy Corporation | Montgomery | R. V. King GU "B" #1 | 12,800 | 33930949 |
| 484503 | May 18, 1999 | May 18, 1999 | Mitchell Energy Corporation | Montgomery | (M/SW) Wildwood Estates #1 | 12,500 | 33930824 |
| 484503Amendment | May 18, 1999 | May 18, 1999 | Mitchell Energy Corporation | Montgomery | (M/SW) Wildwood Estates #1 | 12,500 | 33930824 |
| 484589 | May 17, 1999 | May 17, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1015D | 8,155 | 08900824 |
| 484442 | May 13, 1999 | May 13, 1999 | Mitchell Energy Corporation | Wise | Hardy, B. F. #1 | 5,800 | 49733199 |
| 484412 | May 12, 1999 | May 12, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1104 | 10,625 | 08932138 |
| 484411 | May 12, 1999 | May 12, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1710 | 10,600 | 08932137 |
| 484411Amendment | May 12, 1999 | May 12, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1710 | 10,600 | 08932137 |
| 484454 | May 11, 1999 | May 11, 1999 | Mitchell Energy Corporation | Limestone | Burleson-McBay #2 | 11,020 | 29330709 |
| 484357 | May 10, 1999 | May 10, 1999 | Mitchell Energy Corporation | Wise | Hughes, D. J. #18 | 6,150 | 49731965 |
| 484391 | May 7, 1999 | May 7, 1999 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #81 | 12,300 | 33930970 |
| 484389 | May 7, 1999 | May 7, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #603 | 10,170 | 08900056 |
| 484386 | May 7, 1999 | May 7, 1999 | Mitchell Energy Corporation | Freestone | A. O. Evans Jr GU #2 | 12,900 | 16131582 |
| 484352 | May 6, 1999 | May 6, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1026 | 10,600 | 08932135 |
| 484008 | Apr 21, 1999 | Apr 21, 1999 | Mitchell Energy Corporation | Wise | McAlister, O. H. #8 | 7,700 | 49734362 |
| 483973 | Apr 20, 1999 | Apr 20, 1999 | Mitchell Energy Corporation | Montgomery | R. V. King GU "B" #3 | 12,300 | 33930969 |
| 483855 | Apr 15, 1999 | Apr 15, 1999 | Mitchell Energy Corporation | Limestone | Bettinger #3 | 11,500 | 29331295 |
| 483855Amendment | Apr 15, 1999 | Apr 15, 1999 | Mitchell Energy Corporation | Limestone | Bettinger #3 | 12,200 | 29331295 |
| 483860 | Apr 14, 1999 | Apr 14, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1012H | 7,480 | 08900300 |
| 483860Amendment | Apr 14, 1999 | Apr 14, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1012D | 8,319 | 08900300 |
| 483836 | Apr 14, 1999 | Apr 14, 1999 | Mitchell Energy Corporation | Wise | Pavillard, Albert "A" #5 | 7,400 | 49734359 |
| 483832 | Apr 14, 1999 | Apr 14, 1999 | Mitchell Energy Corporation | Wise | Albert Pavillard GU "B" #2 | 7,400 | 49734360 |
| 483764 | Apr 9, 1999 | Apr 9, 1999 | Mitchell Energy Corporation | Wise | Patterson, M. L. #5 | 7,600 | 49734356 |
| 483764Amendment | Apr 9, 1999 | Apr 9, 1999 | Mitchell Energy Corporation | Wise | Patterson, M. L. #5 | 7,600 | 49734356 |
| 483763 | Apr 9, 1999 | Apr 9, 1999 | Mitchell Energy Corporation | Wise | Cox, Pearl #3 | 8,150 | 49734357 |
| 483762 | Apr 9, 1999 | Apr 9, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Miller B-2 #9J | 7,650 | 49734358 |
| 483726 | Apr 7, 1999 | Apr 7, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #504 | 8,280 | 08900060 |
| 483725 | Apr 7, 1999 | Apr 7, 1999 | Mitchell Energy Corporation | Marion | Orr Unit #4 | 9,000 | 31530849 |
| 483072 | Apr 5, 1999 | Apr 5, 1999 | Mitchell Energy Corporation | Wise | Pavillard, Albert "A" #3 | 7,190 | 49734096 |
| 483630 | Mar 31, 1999 | Mar 31, 1999 | Mitchell Energy Corporation | Wise | Fred L. Graham Gas Unit #3 | 7,450 | 49734352 |
| 483567 | Mar 29, 1999 | Mar 29, 1999 | Mitchell Energy Corporation | Limestone | Phillips Heirs #1 | 7,700 | 29331182 |
| 483567Amendment | Mar 29, 1999 | Mar 29, 1999 | Mitchell Energy Corporation | Limestone | Phillips Heirs #1 | 7,700 | 29331182 |
| 483473 | Mar 29, 1999 | Mar 29, 1999 | Mitchell Energy Corporation | Limestone | Mae. B. Vance GU #5 | 11,500 | 29331294 |
| 483454 | Mar 25, 1999 | Mar 25, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Miller "G" #2G | 7,750 | 49734350 |
| 482997 | Mar 25, 1999 | Mar 25, 1999 | Mitchell Energy Corporation | Marion | Cartwright, L. (Cartwright Unit) #6 | 9,600 | 31530847 |
| 483299 | Mar 15, 1999 | Mar 15, 1999 | Mitchell Energy Corporation | Montgomery | R. V. King GU "B" #2 | 12,300 | 33930968 |
| 483299Amendment | Mar 15, 1999 | Mar 15, 1999 | Mitchell Energy Corporation | Montgomery | R. V. King GU "B" #2 | 12,300 | 33930968 |