| 477738 | Jul 7, 1998 | Jul 7, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1025 | 10,700 | 08932082 |
| 477724 | Jul 6, 1998 | Jul 6, 1998 | Mitchell Energy Corporation | Wise | Stone, P. H. #1 | 5,780 | 49700936 |
| 477688 | Jul 3, 1998 | Jul 3, 1998 | Mitchell Energy Corporation | Chambers | State Tract 86 #1R | 11,650 | 07132137 |
| 477600 | Jul 1, 1998 | Jul 1, 1998 | Mitchell Energy Corporation | Wise | Wcco 4-J. P. Fitch #6A | 7,550 | 49734273 |
| 477394 | Jul 1, 1998 | Jul 1, 1998 | Mitchell Energy Corporation | Limestone | Whisenhunt, H. E. #1 | 10,280 | 29330913 |
| 477394Amendment | Jul 1, 1998 | Jul 1, 1998 | Mitchell Energy Corporation | Limestone | Whisenhunt, H. E. #1 | 10,280 | 29330913 |
| 477584 | Jun 30, 1998 | Jun 30, 1998 | Mitchell Energy Corporation | Wise | Wcco 4-Miller 8-2 #8J | 7,750 | 49734272 |
| 477584Amendment | Jun 30, 1998 | Jun 30, 1998 | Mitchell Energy Corporation | Wise | Wcco 4 #8J | 7,750 | 49734272 |
| 477403 | Jun 29, 1998 | Jun 29, 1998 | Mitchell Energy Corporation | Limestone | Capps, R. T. #2 | 11,300 | 29331275 |
| 477403Amendment | Jun 29, 1998 | Jun 29, 1998 | Mitchell Energy Corporation | Limestone | Capps, R. T. #2 | 11,300 | 29331275 |
| 477367 | Jun 23, 1998 | Jun 23, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #507 | 10,700 | 08932080 |
| 477367Amendment | Jun 23, 1998 | Jun 23, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #507 | 10,700 | 08932080 |
| 477367Amendment | Jun 23, 1998 | Jun 23, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #507 | 10,700 | 08932080 |
| 477296 | Jun 19, 1998 | Jun 19, 1998 | Mitchell Energy Corporation | Wise | Wcco 1 #4A | 8,250 | 49734269 |
| 477295 | Jun 19, 1998 | Jun 19, 1998 | Mitchell Energy Corporation | Denton | James Baker GU #6 | 8,250 | 12130673 |
| 477209 | Jun 18, 1998 | Jun 18, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1024 | 10,700 | 08932079 |
| 477209Amendment | Jun 18, 1998 | Jun 18, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1024 | 10,700 | 08932079 |
| 477200 | Jun 18, 1998 | Jun 18, 1998 | Mitchell Energy Corporation | Jack | Gilley, R. R. #1 | 5,990 | 23701803 |
| 477199 | Jun 18, 1998 | Jun 18, 1998 | Mitchell Energy Corporation | Wise | Gann, G. Y. #2 | 4,445 | 49701113 |
| 477198 | Jun 18, 1998 | Jun 18, 1998 | Mitchell Energy Corporation | Wise | Walker, Eloise #1 | 6,144 | 49701346 |
| 477197 | Jun 18, 1998 | Jun 18, 1998 | Mitchell Energy Corporation | Wise | Shawn, W. L. #1 | 5,918 | 49701300 |
| 477196 | Jun 18, 1998 | Jun 18, 1998 | Mitchell Energy Corporation | Wise | Singleton, J. R. #1 | 6,850 | 49701299 |
| 477084 | Jun 17, 1998 | Jun 17, 1998 | Mitchell Energy Corporation | Wise | Marlett, T. W. #1 | 4,491 | 49709555 |
| 477083 | Jun 17, 1998 | Jun 17, 1998 | Mitchell Energy Corporation | Wise | Bounds, Grace #1 | 5,891 | 49700976 |
| 477082 | Jun 17, 1998 | Jun 17, 1998 | Mitchell Energy Corporation | Wise | Wages, Rush #1 | 6,100 | 49701347 |
| 477082Amendment | Jun 17, 1998 | Jun 17, 1998 | Mitchell Energy Corporation | Wise | Wages, Rush #1 | 6,177 | 49701347 |
| 477150 | Jun 15, 1998 | Jun 15, 1998 | Mitchell Energy Corporation | Montgomery | Butler, Lillie K. #4 | 16,000 | 33930957 |
| 477149 | Jun 15, 1998 | Jun 15, 1998 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #89 | 12,000 | 33930956 |
| 477039 | Jun 15, 1998 | Jun 15, 1998 | Mitchell Energy Corporation | Palo Pinto | Halsell, J. R. "B" #1 | 4,580 | 36331177 |
| 476918 | Jun 11, 1998 | Jun 11, 1998 | Mitchell Energy Corporation | Jack | R. J. Laprade OU #1 | 6,009 | 23735034 |
| 476913 | Jun 8, 1998 | Jun 8, 1998 | Mitchell Energy Corporation | Wise | Wcco 4-Miller "F" #1 | 7,425 | 49734140 |
| 474334 | Jun 8, 1998 | Jun 8, 1998 | Mitchell Energy Corporation | Denton | Dcco 2 #6C | 8,300 | 12130666 |
| 476093 | Jun 3, 1998 | Jun 3, 1998 | Mitchell Energy Corporation | Marion | Cartwright, L. (Cartwright Unit) #5 | 9,600 | 31530842 |
| 476800 | Jun 2, 1998 | Jun 2, 1998 | Mitchell Energy Corporation | Wise | Stella Young GU #5 | 7,400 | 49734265 |
| 476756 | Jun 1, 1998 | Jun 1, 1998 | Mitchell Energy Corporation | Wise | Wcco 4 #4H | 7,900 | 49734264 |
| 476700 | May 28, 1998 | May 28, 1998 | Mitchell Energy Corporation | Denton | Pennington GU "A" #3 | 8,400 | 12130672 |
| 476699 | May 28, 1998 | May 28, 1998 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1605 | 10,798 | 08931799 |
| 475299 | May 28, 1998 | May 28, 1998 | Mitchell Energy Corporation | Marion | Brooks Unit (Hall Estate) #6 | 9,600 | 31530840 |
| 476461 | May 20, 1998 | May 20, 1998 | Mitchell Energy Corporation | Denton | Griffin, S. H. Estate #4 | 8,550 | 12130670 |
| 476348 | May 20, 1998 | May 20, 1998 | Mitchell Energy Corporation | Wise | Martin, J. C. #1 | 6,000 | 49702978 |
| 476347 | May 18, 1998 | May 18, 1998 | Mitchell Energy Corporation | Wise | Thurmond, Joe "A" #1 | 8,200 | 49734261 |
| 475968 | May 7, 1998 | May 7, 1998 | Mitchell Energy Corporation | Wise | Johnson, W. D. "A" #10 | 7,910 | 49734151 |
| 475969 | May 6, 1998 | May 6, 1998 | Mitchell Energy Corporation | Wise | Johnson, W. D. "A" #9 | 7,960 | 49734100 |
| 475220 | Apr 28, 1998 | Apr 28, 1998 | Mitchell Energy Corporation | Wise | Halman, W. H. #2 | 5,921 | 49701118 |
| 475670 | Apr 27, 1998 | Apr 27, 1998 | Mitchell Energy Corporation | Wise | Wcco 4 #1G | 7,700 | 49734260 |
| 475669 | Apr 27, 1998 | Apr 27, 1998 | Mitchell Energy Corporation | Marion | Annie D. Kelsey Gas Unit #5 | 9,600 | 31530841 |
| 475569 | Apr 27, 1998 | Apr 27, 1998 | Mitchell Energy Corporation | Wise | Bonds, P. R. Jr. #1 | 6,100 | 49700943 |
| 475568 | Apr 27, 1998 | Apr 27, 1998 | Mitchell Energy Corporation | Wise | Hess, C. M. #1 | 4,085 | 49701137 |
| 475567 | Apr 27, 1998 | Apr 27, 1998 | Mitchell Energy Corporation | Wise | Torrance, R. B. #1 | 6,150 | 49701351 |
| 475623 | Apr 24, 1998 | Apr 24, 1998 | Mitchell Energy Corporation | Wise | Wcco 4 #5B | 7,700 | 49734257 |
| 475623Amendment | Apr 24, 1998 | Apr 24, 1998 | Mitchell Energy Corporation | Wise | Wcco 4-Georgia Fitch #5B | 8,400 | 49734257 |
| 475622 | Apr 24, 1998 | Apr 24, 1998 | Mitchell Energy Corporation | Wise | Askey "A" #3 | 8,100 | 49734258 |
| 475424 | Apr 24, 1998 | Apr 24, 1998 | Mitchell Energy Corporation | Wise | Rhoten, B. C. #1 | 5,965 | 49701267 |
| 475343 | Apr 24, 1998 | Apr 24, 1998 | Mitchell Energy Corporation | Wise | Hughes, D. J. #9 | 3,435 | 49701156 |
| 475221 | Apr 24, 1998 | Apr 24, 1998 | Mitchell Energy Corporation | Wise | Morris, Leslie #1 | 3,500 | 49701223 |
| 475592 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Walker, Mabel #3H | 4,200 | 49734254 |
| 475426 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | McDonald, W. E. #1 | 6,395 | 49701201 |
| 475425 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Sellers, J. L. #1 | 5,900 | 49701275 |
| 475423 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Bowden, C. W. #2 | 6,311 | 49700974 |
| 475422 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Bowden, C. W. #1 | 6,249 | 49700975 |
| 475401 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Deavers, H. J. #3 | 3,637 | 49701034 |
| 475400 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Garrison, W. R. #1 | 6,102 | 49701110 |
| 475355 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Gadberry, H. C. #6 | 3,500 | 49701073 |
| 475222 | Apr 23, 1998 | Apr 23, 1998 | Mitchell Energy Corporation | Wise | Caswell, J. I. #6 | 3,215 | 49701000 |
| 475114 | Apr 10, 1998 | Apr 10, 1998 | Mitchell Energy Corporation | Wise | Green, G. W. #1 | 4,030 | 49701097 |
| 475113 | Apr 10, 1998 | Apr 10, 1998 | Mitchell Energy Corporation | Wise | Sewell, Edna #1 | 6,275 | 49701273 |
| 475112 | Apr 10, 1998 | Apr 10, 1998 | Mitchell Energy Corporation | Wise | Cole, Martha E. #1 | 6,100 | 49701029 |
| 475110 | Apr 10, 1998 | Apr 10, 1998 | Mitchell Energy Corporation | Wise | Terrell, C. V. #1 | 7,199 | 49701324 |
| 475163 | Apr 9, 1998 | Apr 9, 1998 | Mitchell Energy Corporation | Wise | Shoop, Glenn P. "E' #2 | 8,150 | 49734251 |
| 475096 | Apr 7, 1998 | Apr 7, 1998 | Mitchell Energy Corporation | Jack | J. R. Clayton Ranch (Caddo) Unit #702H | 4,800 | 23738371 |
| 474934 | Apr 1, 1998 | Apr 1, 1998 | Mitchell Energy Corporation | Wise | Knapp #5 | 8,050 | 49734249 |
| 474871 | Mar 31, 1998 | Mar 31, 1998 | Mitchell Energy Corporation | Wise | Shoop, Glenn P. "F" #3 | 8,200 | 49734248 |
| 474817 | Mar 30, 1998 | Mar 30, 1998 | Mitchell Energy Corporation | Denton | Tcu #2 | 7,825 | 12130667 |
| 474697 | Mar 27, 1998 | Mar 27, 1998 | Mitchell Energy Corporation | Limestone | Jackson, Joyce #2 | 11,250 | 29331261 |
| 474697Amendment | Mar 27, 1998 | Mar 27, 1998 | Mitchell Energy Corporation | Limestone | Jackson, Joyce #2 | 11,250 | 29331261 |
| 474696 | Mar 27, 1998 | Mar 27, 1998 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #72 | 12,300 | 33930955 |
| 474696Amendment | Mar 27, 1998 | Mar 27, 1998 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #72 | 12,300 | 33930955 |
| 474657 | Mar 24, 1998 | Mar 24, 1998 | Mitchell Energy Corporation | Denton | Fred Sanders GU #1 | 8,170 | 12130620 |
| 474653 | Mar 24, 1998 | Mar 24, 1998 | Mitchell Energy Corporation | Wise | Whitesell, Katherine "A" #1 | 7,335 | 49734160 |
| 474540 | Mar 24, 1998 | Mar 24, 1998 | Mitchell Energy Corporation | Limestone | Burleson #4 | 11,600 | 29331260 |
| 474528 | Mar 24, 1998 | Mar 24, 1998 | Mitchell Energy Corporation | Limestone | Clifton, Arthur #3 | 11,100 | 29331259 |
| 474448 | Mar 18, 1998 | Mar 18, 1998 | Mitchell Energy Corporation | Wise | Patterson, M. L. #4 | 7,560 | 49734242 |
| 474335 | Mar 17, 1998 | Mar 17, 1998 | Mitchell Energy Corporation | Wise | Gadberry, H.C. #28H | 4,100 | 49734240 |
| 474313 | Mar 12, 1998 | Mar 12, 1998 | Mitchell Energy Corporation | Tarrant | Villa D. Blakley Estate GU #2 | 7,700 | 43930175 |
| 473324 | Mar 12, 1998 | Mar 12, 1998 | Mitchell Energy Corporation | Hidalgo | CNG #1 | 7,655 | 21532152 |
| 474255 | Mar 11, 1998 | Mar 11, 1998 | Mitchell Energy Corporation | Palo Pinto | Gauldin, R. H. #9H | 4,900 | 36334755 |
| 474007 | Mar 4, 1998 | Mar 4, 1998 | Mitchell Energy Corporation | Jack | Willie Wolf OU #1H | 4,750 | 23738368 |
| 473827 | Feb 26, 1998 | Feb 26, 1998 | Mitchell Energy Corporation | Denton | Pennington GU "A" #2 | 8,350 | 12130665 |
| 473577 | Feb 20, 1998 | Feb 20, 1998 | Mitchell Energy Corporation | Montgomery | Winslow Gas Unit "C" #3 | 10,800 | 33930954 |
| 473577Amendment | Feb 20, 1998 | Feb 20, 1998 | Mitchell Energy Corporation | Montgomery | Winslow Gas Unit "C" #3 | 10,800 | 33930954 |
| 473496 | Feb 18, 1998 | Feb 18, 1998 | Mitchell Energy Corporation | Limestone | Quinn Estate #2 | 10,990 | 29330875 |
| 473267 | Feb 17, 1998 | Feb 17, 1998 | Mitchell Energy Corporation | Montgomery | (M/SW) Wildwood Estates #4 | 12,250 | 33930953 |
| 473267Amendment | Feb 17, 1998 | Feb 17, 1998 | Mitchell Energy Corporation | Montgomery | (M/SW) Wildwood Estates #4 | 12,250 | 33930953 |
| 473263 | Feb 12, 1998 | Feb 12, 1998 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #74 | 12,200 | 33930952 |
| 473263Amendment | Feb 12, 1998 | Feb 12, 1998 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #74 | 12,200 | 33930952 |
| 473104 | Feb 11, 1998 | Feb 11, 1998 | Mitchell Energy Corporation | Limestone | Smythe, E. L. #8 | 11,700 | 29331256 |
| 473052 | Feb 6, 1998 | Feb 6, 1998 | Mitchell Energy Corporation | Denton | Fred Sanders GU #4 | 8,400 | 12130664 |
| 472975 | Feb 5, 1998 | Feb 5, 1998 | Mitchell Energy Corporation | Wise | Stewart, M. F. "A" #2H | 6,000 | 49734231 |
| 472975Amendment | Feb 5, 1998 | Feb 5, 1998 | Mitchell Energy Corporation | Wise | Stewart, M. F. "A" #2H | 6,000 | 49734231 |
| 472895 | Feb 4, 1998 | Feb 4, 1998 | Mitchell Energy Corporation | Montgomery | Mec/O'Connor #1 | 12,900 | 33930950 |