| 491250 | Jan 21, 2000 | Jan 21, 2000 | Mitchell Energy Corporation | Wise | Garrett, Rufus #10 | 7,800 | 49734478 |
| 491249 | Jan 21, 2000 | Jan 21, 2000 | Mitchell Energy Corporation | Denton | Garrett, Rufus #9 | 7,800 | 12130744 |
| 491258 | Jan 20, 2000 | Jan 20, 2000 | Mitchell Energy Corporation | Wood | Alba/Southeast Fault Block/Unit #1014H | 4,600 | 49931941 |
| 491258Amendment | Jan 20, 2000 | Jan 20, 2000 | Mitchell Energy Corporation | Wood | Alba/Southeast Fault Block/Unit #1014H | 4,600 | 49931941 |
| 491200 | Jan 19, 2000 | Jan 19, 2000 | Mitchell Energy Corporation | Denton | Garrett, Rufus #8 | 7,800 | 12130743 |
| 490833 | Jan 5, 2000 | Jan 5, 2000 | Mitchell Energy Corporation | Wise | Derting, B. G. #4 | 7,650 | 49734476 |
| 490742 | Dec 31, 1999 | Dec 31, 1999 | Mitchell Energy Corporation | Wise | Pavillard, Albert "A" #6 | 7,400 | 49734473 |
| 490741 | Dec 31, 1999 | Dec 31, 1999 | Mitchell Energy Corporation | Wise | Pavillard, Albert "A" #7 | 7,450 | 49734474 |
| 490544 | Dec 29, 1999 | Dec 29, 1999 | Mitchell Energy Corporation | Limestone | McGillivray Muse #6 | 12,100 | 29331315 |
| 490544Amendment | Dec 29, 1999 | Dec 29, 1999 | Mitchell Energy Corporation | Limestone | McGillivray Muse #6 | 12,100 | 29331315 |
| 490685 | Dec 28, 1999 | Dec 28, 1999 | Mitchell Energy Corporation | Wise | Sewell Ranch, Inc. #6 | 7,500 | 49734472 |
| 490505 | Dec 20, 1999 | Dec 20, 1999 | Mitchell Energy Corporation | Wise | Sewell Ranch, Inc. "B" #5 | 7,500 | 49734467 |
| 490476 | Dec 17, 1999 | Dec 17, 1999 | Mitchell Energy Corporation | Wise | Sewell Ranch, Inc. #5 | 7,500 | 49734466 |
| 490424 | Dec 17, 1999 | Dec 17, 1999 | Mitchell Energy Corporation | Limestone | Vance, Mae B. "A" #3 | 11,600 | 29331314 |
| 490424Amendment | Dec 17, 1999 | Dec 17, 1999 | Mitchell Energy Corporation | Limestone | Vance, Mae B. "A" #3 | 11,600 | 29331314 |
| 490424Amendment | Dec 17, 1999 | Dec 17, 1999 | Mitchell Energy Corporation | Limestone | Vance, Mae B. "A" #3 | 11,600 | 29331314 |
| 490336 | Dec 14, 1999 | Dec 14, 1999 | Mitchell Energy Corporation | Denton | Blalock, Bob #1 | 8,550 | 12130737 |
| 490286 | Dec 13, 1999 | Dec 13, 1999 | Mitchell Energy Corporation | Freestone | A. O. Evans, Jr. GU #7 | 12,800 | 16131686 |
| 490285 | Dec 13, 1999 | Dec 13, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1018 | 7,850 | 08931723 |
| 487705 | Dec 13, 1999 | Dec 13, 1999 | Mitchell Energy Corporation | Leon | Afwdu #402 | 8,800 | 28931305 |
| 490047 | Dec 6, 1999 | Dec 6, 1999 | Mitchell Energy Corporation | Montgomery | Winslow Gas Unit "A" #1 | 10,280 | 33930800 |
| 490047Amendment | Dec 6, 1999 | Dec 6, 1999 | Mitchell Energy Corporation | Montgomery | Winslow Gas Unit "A" #1 | 10,280 | 33930800 |
| 490041 | Dec 6, 1999 | Dec 6, 1999 | Mitchell Energy Corporation | Denton | Haddock, E. L. #1 | 8,000 | 12130734 |
| 490041Amendment | Dec 6, 1999 | Dec 6, 1999 | Mitchell Energy Corporation | Denton | Haddock, E. L. #1 | 8,000 | 12130734 |
| 489585 | Dec 3, 1999 | Dec 3, 1999 | Mitchell Energy Corporation | Wise | Young, G. C. #1 | 7,215 | 49703084 |
| 489675 | Nov 19, 1999 | Nov 19, 1999 | Mitchell Energy Corporation | Denton | Tcu #11 | 7,850 | 12130731 |
| 489674 | Nov 19, 1999 | Nov 19, 1999 | Mitchell Energy Corporation | Denton | Tcu #12 | 7,850 | 12130732 |
| 489463 | Nov 19, 1999 | Nov 19, 1999 | Mitchell Energy Corporation | Wise | June L. Griffeth Gas Unit "A" #1 | 7,800 | 49734457 |
| 489464 | Nov 15, 1999 | Nov 15, 1999 | Mitchell Energy Corporation | Wise | C. A. Lawrence Unit "E" #11 | 5,950 | 49731983 |
| 489326 | Nov 10, 1999 | Nov 10, 1999 | Mitchell Energy Corporation | Jack | Gillespie, Ralph #1 | 5,333 | 23737410 |
| 489325 | Nov 10, 1999 | Nov 10, 1999 | Mitchell Energy Corporation | Lavaca | Roden #1 | 6,500 | 28532760 |
| 489248 | Nov 9, 1999 | Nov 9, 1999 | Mitchell Energy Corporation | Jack | Carpenter-Martin "A" #1 | 5,350 | 23738489 |
| 489207 | Nov 8, 1999 | Nov 8, 1999 | Mitchell Energy Corporation | Wise | Wco 4 - Wm. Miller GU 2 #7M | 7,800 | 49734456 |
| 489174 | Nov 5, 1999 | Nov 5, 1999 | Mitchell Energy Corporation | Montgomery | Winslow Gas Unit "B" #2 | 11,180 | 33930923 |
| 489173 | Nov 5, 1999 | Nov 5, 1999 | Mitchell Energy Corporation | Wise | Shoop, Glenn P. "H" #1 | 8,200 | 49734455 |
| 488902 | Oct 29, 1999 | Oct 29, 1999 | Mitchell Energy Corporation | Wise | Tarrant County Waterboard #11 | 4,210 | 49701303 |
| 488885 | Oct 28, 1999 | Oct 28, 1999 | Mitchell Energy Corporation | Wise | Gilbert Shawn GU 3 #5 | 6,140 | 49732336 |
| 488809 | Oct 26, 1999 | Oct 26, 1999 | Mitchell Energy Corporation | Wise | McAlister, O. H. #9 | 7,800 | 49734452 |
| 488643 | Oct 20, 1999 | Oct 20, 1999 | Mitchell Energy Corporation | Jack | Conkling, W. W. #1 | 5,250 | 23737590 |
| 488589 | Oct 20, 1999 | Oct 20, 1999 | Mitchell Energy Corporation | Wise | Meadows-Kelly #1 | 6,185 | 49701199 |
| 488600 | Oct 19, 1999 | Oct 19, 1999 | Mitchell Energy Corporation | Throckmorton | Anp -135- #1 | 5,350 | 44735689 |
| 488566 | Oct 18, 1999 | Oct 18, 1999 | Mitchell Energy Corporation | Wise | Young, W. M. #1 | 7,550 | 49734447 |
| 488565 | Oct 18, 1999 | Oct 18, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Fitch, J. P. #10A | 7,750 | 49734448 |
| 488514 | Oct 15, 1999 | Oct 15, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Fitch, J. P. #8A | 7,650 | 49734445 |
| 488513 | Oct 15, 1999 | Oct 15, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - J P Fitch #9A | 7,650 | 49734446 |
| 488437 | Oct 14, 1999 | Oct 14, 1999 | Mitchell Energy Corporation | Wise | Gadberry, H. C. #4 | 3,400 | 49701075 |
| 488422 | Oct 13, 1999 | Oct 13, 1999 | Mitchell Energy Corporation | Wise | Garrett, Rufus #5 | 7,750 | 49734441 |
| 488421 | Oct 13, 1999 | Oct 13, 1999 | Mitchell Energy Corporation | Wise | Garrett, Rufus #7 | 7,750 | 49734442 |
| 488319 | Oct 11, 1999 | Oct 11, 1999 | Mitchell Energy Corporation | Denton | Dcco 1 - Dctc #9E | 8,300 | 12130725 |
| 488318 | Oct 11, 1999 | Oct 11, 1999 | Mitchell Energy Corporation | Denton | Dcco 2 - Williams, Ray #5D | 8,300 | 12130724 |
| 487481 | Oct 7, 1999 | Oct 7, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #101L | 8,320 | 08900031 |
| 488109 | Oct 4, 1999 | Oct 4, 1999 | Mitchell Energy Corporation | Wise | R. S. Garrett Gas Unit "C" #2 | 7,700 | 49734438 |
| 488109Amendment | Oct 4, 1999 | Oct 4, 1999 | Mitchell Energy Corporation | Wise | R. S. Garrett Gas Unit "C" #2 | 7,700 | 49734438 |
| 488108 | Oct 4, 1999 | Oct 4, 1999 | Mitchell Energy Corporation | Limestone | Hawkins, J. G. #4 | 11,250 | 29331310 |
| 488107 | Oct 4, 1999 | Oct 4, 1999 | Mitchell Energy Corporation | Wise | R. S. Garrett Gas Unit "C" #1 | 7,750 | 49734437 |
| 488066 | Oct 4, 1999 | Oct 4, 1999 | Mitchell Energy Corporation | Wise | Garrett, Rufus #6 | 7,750 | 49734436 |
| 488128 | Oct 1, 1999 | Oct 1, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #1104 | 9,180 | 08932138 |
| 488122 | Oct 1, 1999 | Oct 1, 1999 | Mitchell Energy Corporation | Denton | Blakley Estate Gas Unit "D" #1 | 7,750 | 12130723 |
| 488038 | Sep 29, 1999 | Sep 29, 1999 | Mitchell Energy Corporation | Freestone | A. O. Evans, Jr. GU #6 | 13,600 | 16131632 |
| 488022 | Sep 29, 1999 | Sep 29, 1999 | Mitchell Energy Corporation | Fort Bend | Kamencak Estate #1 | 12,200 | 15732072 |
| 488021 | Sep 29, 1999 | Sep 29, 1999 | Mitchell Energy Corporation | Fort Bend | McBee, Jerry #1 | 9,750 | 15732071 |
| 487732 | Sep 27, 1999 | Sep 27, 1999 | Mitchell Energy Corporation | Wise | Roth, H. J. #1 | 4,454 | 49701826 |
| 487869 | Sep 24, 1999 | Sep 24, 1999 | Mitchell Energy Corporation | Limestone | Everett #8 | 12,200 | 29331307 |
| 487756 | Sep 23, 1999 | Sep 23, 1999 | Mitchell Energy Corporation | Throckmorton | Anp -176- #1 | 5,312 | 44735711 |
| 487744 | Sep 23, 1999 | Sep 23, 1999 | Mitchell Energy Corporation | Wise | Robinson, Roy #2 | 5,973 | 49700885 |
| 487410 | Sep 10, 1999 | Sep 10, 1999 | Mitchell Energy Corporation | Wise | Wcco 4 - Logan, H. H. #5H | 8,000 | 49734430 |
| 487398 | Sep 9, 1999 | Sep 9, 1999 | Mitchell Energy Corporation | Wise | Sol Carpenter Heirs #6 | 8,000 | 49734429 |
| 487362 | Sep 8, 1999 | Sep 8, 1999 | Mitchell Energy Corporation | Wise | Clough, Michael #4 | 8,050 | 49734428 |
| 487259 | Sep 8, 1999 | Sep 8, 1999 | Mitchell Energy Corporation | Denton | Dcco 1 - Morris, Ted #7A | 8,350 | 12130720 |
| 487258 | Sep 8, 1999 | Sep 8, 1999 | Mitchell Energy Corporation | Wise | Stewart, M. F. "A" #1 | 6,293 | 49734132 |
| 487257 | Sep 8, 1999 | Sep 8, 1999 | Mitchell Energy Corporation | Jack | Wright, Barney #1 | 5,530 | 23737496 |
| 487186 | Sep 8, 1999 | Sep 8, 1999 | Mitchell Energy Corporation | Wise | Jones, C. R. #1 | 6,098 | 49720138 |
| 487185 | Sep 8, 1999 | Sep 8, 1999 | Mitchell Energy Corporation | Jack | Lee, C. F. #1 | 5,400 | 23702745 |
| 487184 | Sep 8, 1999 | Sep 8, 1999 | Mitchell Energy Corporation | Wise | Bradley, Emer #1 | 5,773 | 49704004 |
| 487202 | Sep 3, 1999 | Sep 3, 1999 | Mitchell Energy Corporation | Denton | Peggy Smith Gas Unit "A" #3 | 8,350 | 12130719 |
| 487201 | Sep 3, 1999 | Sep 3, 1999 | Mitchell Energy Corporation | Denton | Dcco 1 - Hosek, Shirley M. #6B | 8,450 | 12130718 |
| 487168 | Sep 2, 1999 | Sep 2, 1999 | Mitchell Energy Corporation | Montgomery | Lake Creek Unit #78 | 9,720 | 33930944 |
| 487167 | Sep 2, 1999 | Sep 2, 1999 | Mitchell Energy Corporation | Robertson | Rambo, C. C. #1 | 12,390 | 39530249 |
| 487048 | Aug 30, 1999 | Aug 30, 1999 | Mitchell Energy Corporation | Jack | Morris-Kempner "B" #6 | 5,828 | 23701799 |
| 487047 | Aug 30, 1999 | Aug 30, 1999 | Mitchell Energy Corporation | Wise | Wcco 1 - Sims, Thomas P. "B" #3G | 8,300 | 49734425 |
| 487046 | Aug 30, 1999 | Aug 30, 1999 | Mitchell Energy Corporation | Denton | Tcu #10 | 7,850 | 12130716 |
| 486997 | Aug 27, 1999 | Aug 27, 1999 | Mitchell Energy Corporation | Limestone | Herod, D. C. #4 | 11,250 | 29331303 |
| 486989 | Aug 26, 1999 | Aug 26, 1999 | Mitchell Energy Corporation | Wise | Ham, J. A. #7 | 8,100 | 49734424 |
| 486951 | Aug 26, 1999 | Aug 26, 1999 | Mitchell Energy Corporation | Denton | Tcu #7 | 7,850 | 12130715 |
| 486362 | Aug 26, 1999 | Aug 26, 1999 | Mitchell Energy Corporation | Wise | Crenshaw Gas Unit #3 | 6,350 | 49734415 |
| 486889 | Aug 23, 1999 | Aug 23, 1999 | Mitchell Energy Corporation | Colorado | Columbus Field Unit #507 | 8,800 | 08932080 |
| 486828 | Aug 23, 1999 | Aug 23, 1999 | Mitchell Energy Corporation | Robertson | Smith, C. Collum #1 | 12,670 | 39530266 |
| 486827 | Aug 23, 1999 | Aug 23, 1999 | Mitchell Energy Corporation | Limestone | J. R. Thomason Gas Unit #1 | 11,120 | 29330473 |
| 486750 | Aug 20, 1999 | Aug 20, 1999 | Mitchell Energy Corporation | Denton | Tcu #3 | 7,800 | 12130714 |
| 486748 | Aug 20, 1999 | Aug 20, 1999 | Mitchell Energy Corporation | Denton | Tcu #5 | 7,850 | 12130712 |
| 486746 | Aug 20, 1999 | Aug 20, 1999 | Mitchell Energy Corporation | Denton | Tcu #4 | 7,800 | 12130710 |
| 486745 | Aug 20, 1999 | Aug 20, 1999 | Mitchell Energy Corporation | Denton | Tcu #9 | 7,800 | 12130709 |
| 486749 | Aug 19, 1999 | Aug 19, 1999 | Mitchell Energy Corporation | Denton | Tcu #6 | 7,800 | 12130713 |
| 486747 | Aug 19, 1999 | Aug 19, 1999 | Mitchell Energy Corporation | Denton | Tcu #8 | 7,850 | 12130711 |
| 486671 | Aug 16, 1999 | Aug 16, 1999 | Mitchell Energy Corporation | Wise | Finlayson, O. T. "A" #3 | 7,800 | 49734421 |
| 486670 | Aug 16, 1999 | Aug 16, 1999 | Mitchell Energy Corporation | Wise | Davis, W. M. #1 | 5,771 | 49701806 |
| 486580 | Aug 12, 1999 | Aug 12, 1999 | Mitchell Energy Corporation | Marion | Simpson Family #3 | 9,100 | 31530852 |
| 486580Amendment | Aug 12, 1999 | Aug 12, 1999 | Mitchell Energy Corporation | Marion | Simpson Family #3 | 9,100 | 31530852 |
| 485962 | Aug 11, 1999 | Aug 11, 1999 | Mitchell Energy Corporation | Wise | Kaker #2 | 6,350 | 49734406 |
| 486454 | Aug 6, 1999 | Aug 6, 1999 | Mitchell Energy Corporation | Wise | Askey "A" #4 | 8,150 | 49734418 |