| 374185 | Jun 6, 1990 | Jun 6, 1990 | Cobra Oil & Gas Corporation | Colorado | Frapart-Carruth Trust #1 | 9,100 | 08931797 |
| 374185Amendment | Jun 6, 1990 | Jun 6, 1990 | Cobra Oil & Gas Corporation | Colorado | Frapart-Carruth Trust #1 | 8,600 | 08931797 |
| 363796 | Sep 13, 1989 | Sep 13, 1989 | Cobra Oil & Gas Corporation | Marion | Chew, W. D. #1 | 6,500 | 31530764 |
| 363223 | Aug 25, 1989 | Aug 25, 1989 | Cobra Oil & Gas Corporation | Throckmorton | Polk County School Land 24 #1 | 5,000 | 44735028 |
| 362630 | Aug 10, 1989 | Aug 10, 1989 | Cobra Oil & Gas Corporation | Henderson | Wilbanks, Christine M. #1 | 12,100 | 21330632 |
| 362630Amendment | Aug 10, 1989 | Aug 10, 1989 | Cobra Oil & Gas Corporation | Henderson | Wilbanks, Christine M. #1 | 12,100 | 21330632 |
| 362630Amendment | Aug 10, 1989 | Aug 10, 1989 | Cobra Oil & Gas Corporation | Henderson | Wilbanks, Christine M. #1 | 12,103 | 21330632 |
| 354344 | Dec 15, 1988 | Dec 15, 1988 | Cobra Oil & Gas Corporation | Throckmorton | Swenson #1114 | 5,400 | 44734933 |
| 353629 | Nov 28, 1988 | Nov 28, 1988 | Cobra Oil & Gas Corporation | Throckmorton | Swenson 81 #1 | 5,400 | 44734929 |
| 345126 | Jun 22, 1988 | Jun 22, 1988 | Mooringsport Energy Prod. Corp. | Duval | Ruiz, Francisco No. 1 #1 | 15,000 | 13137003 |
| 344320 | Mar 23, 1988 | Mar 23, 1988 | Cobra Oil & Gas Corporation | Borden | Burl #108 | 6,500 | 03331347 |
| 341576 | Feb 10, 1988 | Feb 10, 1988 | Cobra Oil & Gas Corporation | Colorado | East Hamel Gas Unit #1 | 10,000 | 08931717 |
| 341378 | Jan 13, 1988 | Jan 13, 1988 | Cobra Oil & Gas Corporation | Throckmorton | Edsall Unit #1 | 4,868 | 44733271 |
| 341377 | Jan 13, 1988 | Jan 13, 1988 | Cobra Oil & Gas Corporation | Throckmorton | Armstrong, T. F. #1 D | 4,615 | 44700298 |
| 327562 | Mar 13, 1987 | Mar 13, 1987 | Cobra Oil & Gas Corporation | Throckmorton | Edsall Unit #2 | 5,000 | 44734710 |
| 326498 | Feb 18, 1987 | Feb 18, 1987 | Cobra Oil & Gas Corporation | Archer | Robert Vogtsberger Unit #1 | 5,800 | 00939696 |
| 326427 | Feb 13, 1987 | Feb 13, 1987 | Cobra Oil & Gas Corporation | Throckmorton | Edsall "E" #1 | 5,200 | 44734702 |
| 322398 | Oct 6, 1986 | Oct 6, 1986 | Cobra Oil & Gas Corporation | Borden | Jones, Don A. #4479 | 6,500 | 03331551 |
| 303534 | Jun 23, 1986 | Jun 23, 1986 | Cobra Oil & Gas Corporation | Shelby | Pate #1 | 8,500 | 41930524 |
| 283779 | Aug 30, 1985 | Aug 30, 1985 | Cobra Oil & Gas Corporation | Colorado | East Hamel Gas Unit #1 | 10,000 | 08931717 |
| 279201 | Jul 1, 1985 | Jul 1, 1985 | Cobra Oil & Gas Corporation | Shelby | Pate #1 | 8,500 | 41930524 |
| 278931 | Jun 27, 1985 | Jun 27, 1985 | Cobra Oil & Gas Corporation | Throckmorton | Heydrick #1 | 5,500 | 44734420 |
| 275386 | May 17, 1985 | May 17, 1985 | Cobra Oil & Gas Corporation | Rusk | Crump #1 | 7,350 | 40132020 |
| 270147 | Mar 21, 1985 | Mar 21, 1985 | Cobra Oil & Gas Corporation | Baylor | Upshur County School Land #1115 | 5,500 | 02331171 |
| 268329 | Mar 4, 1985 | Mar 4, 1985 | Cobra Oil & Gas Corporation | Throckmorton | Polk County School Land #3019 | 5,200 | 44734357 |
| 265519 | Jan 25, 1985 | Jan 25, 1985 | Cobra Oil & Gas Corporation | Archer | Vogtsberger, August "A" #10 | 5,400 | 00938748 |
| 264824 | Jan 22, 1985 | Jan 22, 1985 | Cobra Oil & Gas Corporation | Archer | Vogtsberger, August "A" #11 | 5,400 | 00938741 |
| 254430 | Oct 11, 1984 | Oct 11, 1984 | Cobra Oil & Gas Corporation | Shelby | Frost #1 | 9,000 | 41930507 |
| 250316 | Aug 31, 1984 | Aug 31, 1984 | Cobra Oil & Gas Corporation | Runnels | Minerva #1 | 5,100 | 39933316 |
| 247636 | Aug 8, 1984 | Aug 8, 1984 | Cobra Oil & Gas Corporation | Clay | Mayo Unit 1 #2 | 6,100 | 07733481 |
| 247662 | Aug 8, 1984 | Aug 8, 1984 | Cobra Oil & Gas Corporation | Throckmorton | Edsall-Polk CSL Unit #1 | 5,200 | 44734143 |
| 243583 | Jun 27, 1984 | Jun 27, 1984 | Cobra Oil & Gas Corporation | Knox | Brown #1 | 6,400 | 27531571 |
| 237005 | Apr 27, 1984 | Apr 27, 1984 | Cobra Oil & Gas Corporation | Archer | Vogtsberger, August "A" #9 | 5,400 | 00938257 |
| 236519 | Apr 24, 1984 | Apr 24, 1984 | Cobra Oil & Gas Corporation | Colorado | Broyles B #2 | 10,200 | 08931480 |
| 235919 | Apr 18, 1984 | Apr 18, 1984 | Cobra Oil & Gas Corporation | Shelby | McSwain #1 | 8,800 | 41930485 |
| 233963 | Mar 29, 1984 | Mar 29, 1984 | Cobra Oil & Gas Corporation | Archer | Boone #1 | 5,300 | 00938206 |
| 233752 | Mar 28, 1984 | Mar 28, 1984 | Cobra Oil & Gas Corporation | Knox | Barry #1 | 6,400 | 27531536 |
| 231369 | Mar 6, 1984 | Mar 6, 1984 | Cobra Oil & Gas Corporation | Kaufman | Darst Unit #1 | 10,200 | 25730269 |
| 217626 | Oct 19, 1983 | Oct 19, 1983 | Cobra Oil & Gas Corporation | Wise | Mansfield B #3 | 6,200 | 49732663 |
| 217624 | Oct 19, 1983 | Oct 19, 1983 | Cobra Oil & Gas Corporation | Jack | Mansfield, Mollie "D" #C2 | 7,000 | 23735582 |
| 218952 | Oct 19, 1983 | Oct 19, 1983 | Cobra Oil & Gas Corporation | Borden | Belew, B. J. #3480 | 6,500 | 03330936 |
| 216897 | Oct 12, 1983 | Oct 12, 1983 | Cobra Oil & Gas Corporation | Wilbarger | Waggoner, W. T. Estate - Booger #1 | 2,300 | 48731702 |
| 215610 | Sep 28, 1983 | Sep 28, 1983 | Cobra Oil & Gas Corporation | Throckmorton | KA Unit-3034 #1 | 5,000 | 44733838 |
| 206692 | Aug 22, 1983 | Aug 22, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Edsall "D" #D1 | 4,700 | 44733753 |
| 206672 | Aug 22, 1983 | Aug 22, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Edsall, A. B. "A" #A4 | 5,000 | 44733752 |
| 205666 | Aug 16, 1983 | Aug 16, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Curtis, W. E. #1 D | 1,100 | 44733738 |
| 196624 | May 27, 1983 | May 27, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Curt-Ham Unit #1 | 4,999 | 44733602 |
| 194943 | May 13, 1983 | May 13, 1983 | Cobra Oil & Gas Corporation | Fisher | Gordon #6701 | 6,542 | 15131665 |
| 194290 | May 10, 1983 | May 10, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Edsall 'C' #1 | 3,282 | 44733592 |
| 193896 | May 9, 1983 | May 9, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Hannis "B" #1 | 4,953 | 44733579 |
| 192604 | Apr 27, 1983 | Apr 27, 1983 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #38S | 1,600 | 36333104 |
| 191926 | Apr 18, 1983 | Apr 18, 1983 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #7 | 4,200 | 36333097 |
| 188715 | Mar 15, 1983 | Mar 15, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Edsall-B #1 | 5,200 | 44733539 |
| 187664 | Mar 7, 1983 | Mar 7, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Edsall - B #1 | 4,900 | 44733524 |
| 187075 | Feb 24, 1983 | Feb 24, 1983 | Cobra Oil & Gas Corporation | Throckmorton | McKinley #1 | 4,500 | 44733513 |
| 185135 | Feb 3, 1983 | Feb 3, 1983 | Cobra Oil & Gas Corporation | Borden | Miller 'D' #1467 | 8,145 | 03330856 |
| 185104 | Feb 3, 1983 | Feb 3, 1983 | Cobra Oil & Gas Corporation | Throckmorton | Hannis #1 | 4,613 | 44781982 |
| 181291 | Dec 22, 1982 | Dec 22, 1982 | Cobra Oil & Gas Corporation | Borden | Hamilton, Roland #1-48 | 9,135 | 03330844 |
| 181092 | Dec 22, 1982 | Dec 22, 1982 | Cobra Oil & Gas Corporation | Colorado | Broyles B #B1 | 10,800 | 08931356 |
| 179377 | Dec 6, 1982 | Dec 6, 1982 | Cobra Oil & Gas Corporation | Throckmorton | Armstrong, T. F. "B" #B2 | 5,000 | 44733396 |
| 179346 | Dec 6, 1982 | Dec 6, 1982 | Cobra Oil & Gas Corporation | Garza | Kirkpatrick, Ruby #1-942 | 8,300 | 16931991 |
| 177320 | Nov 15, 1982 | Nov 15, 1982 | Cobra Oil & Gas Corporation | Fayette | Reid #1 | 7,665 | 14931429 |
| 170588 | Sep 1, 1982 | Sep 1, 1982 | Cobra Oil & Gas Corporation | Borden | Miller "C" #1 | 8,600 | 03330815 |
| 169824 | Aug 20, 1982 | Aug 20, 1982 | Cobra Oil & Gas Corporation | Wilbarger | Fitzgerald Unit #1 #1 | 5,217 | 48731600 |
| 168899 | Aug 5, 1982 | Aug 5, 1982 | Cobra Oil & Gas Corporation | Throckmorton | Edsall Unit #1 #1 | 5,200 | 44733271 |
| 168357 | Aug 5, 1982 | Aug 5, 1982 | Cobra Oil & Gas Corporation | Throckmorton | Armstrong, T. F. #1 | 5,200 | 44733267 |
| 168355 | Aug 5, 1982 | Aug 5, 1982 | Cobra Oil & Gas Corporation | Throckmorton | Curtiss, W. E. #1 | 5,200 | 44733266 |
| 166697 | Jul 14, 1982 | Jul 14, 1982 | Cobra Oil & Gas Corporation | Fayette | Webb, Ivan #2 | 7,600 | 14931384 |
| 161224 | May 20, 1982 | May 20, 1982 | Cobra Oil & Gas Corporation | Wharton | Sims, B.O. #1 | 5,000 | 48131854 |
| 161025 | May 17, 1982 | May 17, 1982 | Cobra Oil & Gas Corporation | Fayette | Kasper Unit #1 | 7,800 | 14931322 |
| 154237 | Mar 18, 1982 | Mar 18, 1982 | Cobra Oil & Gas Corporation | Clay | Ross, O.O. Jr. #3 | 4,800 | 07700895 |
| 154235 | Mar 18, 1982 | Mar 18, 1982 | Cobra Oil & Gas Corporation | Clay | Mayo, Joe "A" #1 | 6,100 | 07732596 |
| 153388 | Mar 15, 1982 | Mar 15, 1982 | Cobra Oil & Gas Corporation | Yoakum | Lee #1377 | 13,000 | 50132203 |
| 149388 | Jan 27, 1982 | Jan 27, 1982 | Cobra Oil & Gas Corporation | Clay | Joe Mayo Unit #2 #2 | 6,100 | 07782414 |
| 148486 | Jan 25, 1982 | Jan 25, 1982 | Cobra Oil & Gas Corporation | Borden | Miller, R. N. "A" #5 A | 5,400 | 03330774 |
| 148485 | Jan 25, 1982 | Jan 25, 1982 | Cobra Oil & Gas Corporation | Borden | Miller, R.N. "A" #6 A | 5,400 | 03330773 |
| 147955 | Jan 21, 1982 | Jan 21, 1982 | Cobra Oil & Gas Corporation | Clay | Dillard, A.R. Jr. "E" #1 | 6,250 | 07732537 |
| 143268 | Nov 24, 1981 | Nov 24, 1981 | Cobra Oil & Gas Corporation | Borden | J. Bley #1-466 | 8,000 | 03330748 |
| 137634 | Oct 22, 1981 | Oct 22, 1981 | Cobra Oil & Gas Corporation | Hemphill | Hodgson #1-41 | 12,000 | 21131403 |
| 131360 | Aug 3, 1981 | Aug 3, 1981 | Cobra Oil & Gas Corporation | Fayette | Shirocky-Riverbed Unit #1 | 7,950 | 14930999 |
| 124095 | Jul 7, 1981 | Jul 7, 1981 | Cobra Oil & Gas Corporation | Clay | W.W. Jones Unit #1 | 6,150 | 07732264 |
| 122822 | Jun 26, 1981 | Jun 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #46-S | 1,600 | 36332670 |
| 122726 | Jun 26, 1981 | Jun 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #47-S | 1,600 | 36332666 |
| 122725 | Jun 26, 1981 | Jun 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #49-S | 1,600 | 36332665 |
| 122724 | Jun 26, 1981 | Jun 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #48-S | 1,600 | 36332664 |
| 124700 | Jun 19, 1981 | Jun 19, 1981 | Cobra Oil & Gas Corporation | Clay | Mayo, Joe Unit #1 #1 | 6,150 | 07732270 |
| 124525 | Jun 4, 1981 | Jun 4, 1981 | Cobra Oil & Gas Corporation | Borden | Miller, R. N. "A" #3 | 8,250 | 03330570 |
| 117882 | May 13, 1981 | May 13, 1981 | Cobra Oil & Gas Corporation | Callahan | Dill #1 | 4,100 | 05933131 |
| 117624 | May 11, 1981 | May 11, 1981 | Cobra Oil & Gas Corporation | Fayette | Ellisor Estate #1 | 7,500 | 14930305 |
| 117105 | May 5, 1981 | May 5, 1981 | Cobra Oil & Gas Corporation | Borden | Miller, R.N. #4 | 8,600 | 03330674 |
| 115856 | Apr 23, 1981 | Apr 23, 1981 | Cobra Oil & Gas Corporation | Fayette | Ellisor Estate #1A | 7,400 | 14931023 |
| 115729 | Apr 21, 1981 | Apr 21, 1981 | Cobra Oil & Gas Corporation | Bastrop | Migl #1 | 6,500 | 02130328 |
| 115358 | Apr 16, 1981 | Apr 16, 1981 | Cobra Oil & Gas Corporation | Callahan | Hargrove #1 | 3,950 | 05933110 |
| 115355 | Apr 16, 1981 | Apr 16, 1981 | Cobra Oil & Gas Corporation | Callahan | Hargrove #2 | 4,100 | 05933109 |
| 109729 | Feb 26, 1981 | Feb 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #45-5 | 1,700 | 36332584 |
| 109728 | Feb 26, 1981 | Feb 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #43-S | 1,700 | 36332583 |
| 109727 | Feb 26, 1981 | Feb 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #35-S | 1,740 | 36332487 |
| 109725 | Feb 26, 1981 | Feb 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #42-S | 1,700 | 36332582 |
| 109724 | Feb 26, 1981 | Feb 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #44-S | 1,700 | 36332581 |
| 109723 | Feb 26, 1981 | Feb 26, 1981 | Cobra Oil & Gas Corporation | Palo Pinto | Robinson, Guy #38-S | 1,700 | 36332580 |