| 394374 | Jun 30, 1992 | Jun 30, 1992 | Dyco Petroleum Corporation | Hemphill | Kiker-Amoco #206 | 14,850 | 21131970 |
| 393793 | Nov 8, 1991 | Nov 8, 1991 | Dyco Petroleum Corporation | Hemphill | Glisan-Steen #2013 | 14,850 | 21131968 |
| 379153 | Oct 12, 1990 | Oct 12, 1990 | Dyco Petroleum Corporation | Wheeler | Coltharp #1058 | 17,700 | 48331269 |
| 371034 | Mar 26, 1990 | Mar 26, 1990 | Dyco Petroleum Corporation | Ochiltree | Hurn #1912 | 9,700 | 35731506 |
| 363842 | Sep 29, 1989 | Sep 29, 1989 | Dyco Petroleum Corporation | Ochiltree | Hurn #3912 | 9,200 | 35731819 |
| 359357 | May 18, 1989 | May 18, 1989 | Dyco Petroleum Corporation | Liberty | McDonald, Hamill A #5 | 9,125 | 29131534 |
| 359356 | May 18, 1989 | May 18, 1989 | Dyco Petroleum Corporation | Liberty | McDonald, Hamill #1 | 10,991 | 29130638 |
| 355130 | Jan 13, 1989 | Jan 13, 1989 | Dyco Petroleum Corporation | Lavaca | Neuhaus, H. E. #1 | 10,000 | 28500532 |
| 353818 | Dec 2, 1988 | Dec 2, 1988 | Dyco Petroleum Corporation | Crockett | Shannon, M. A.,est. #1 | 2,185 | 10502014 |
| 351020 | Sep 15, 1988 | Sep 15, 1988 | Dyco Petroleum Corporation | Wheeler | Zybach #1013 | 15,500 | 48331386 |
| 348955 | Jul 15, 1988 | Jul 15, 1988 | Dyco Petroleum Corporation | Wheeler | Bass #1059 | 18,000 | 48331374 |
| 343210 | Mar 21, 1988 | Mar 21, 1988 | Dyco Petroleum Corporation | Wheeler | Texas Strip #1029 | 17,000 | 48331361 |
| 343210Amendment | Mar 21, 1988 | Mar 21, 1988 | Dyco Petroleum Corporation | Wheeler | Texas Strip #1029 | 17,000 | 48331361 |
| 343876 | Mar 16, 1988 | Mar 16, 1988 | Dyco Petroleum Corporation | Hemphill | Bowers #A252 | 15,000 | 21131889 |
| 343876Amendment | Mar 16, 1988 | Mar 16, 1988 | Dyco Petroleum Corporation | Hemphill | Bowers #A252 | 15,000 | 21131889 |
| 343895 | Mar 14, 1988 | Mar 14, 1988 | Dyco Petroleum Corporation | Wheeler | Putney-Hester #1030 | 16,300 | 48331362 |
| 341996 | Feb 17, 1988 | Feb 17, 1988 | Dyco Petroleum Corporation | Wheeler | Helton #1049 | 16,300 | 48331354 |
| 332128 | Nov 9, 1987 | Nov 9, 1987 | Dyco Petroleum Corporation | Hemphill | Aitkenhead #2259 | 15,000 | 21131874 |
| 331598 | Jun 19, 1987 | Jun 19, 1987 | Dyco Petroleum Corporation | Hockley | Cunningham #2A | 5,000 | 21935092 |
| 331302 | Jun 10, 1987 | Jun 10, 1987 | Dyco Petroleum Corporation | Hemphill | Urschel #1054 | 11,250 | 21131865 |
| 330956 | Jun 2, 1987 | Jun 2, 1987 | Dyco Petroleum Corporation | Hemphill | Begert #1013 | 15,200 | 21131864 |
| 327687 | Mar 12, 1987 | Mar 12, 1987 | Dyco Petroleum Corporation | Hemphill | Abraham, J. #2 | 11,000 | 21131860 |
| 325386 | Jan 16, 1987 | Jan 16, 1987 | Dyco Petroleum Corporation | Brazoria | Price, J. E. #1 | 8,200 | 03930712 |
| 324846 | Dec 29, 1986 | Dec 29, 1986 | Dyco Petroleum Corporation | Hemphill | Harrison #1013 | 15,200 | 21131853 |
| 324846Amendment | Dec 29, 1986 | Dec 29, 1986 | Dyco Petroleum Corporation | Hemphill | Harrison #1013 | 11,917 | 21131853 |
| 322131 | Nov 17, 1986 | Nov 17, 1986 | Dyco Petroleum Corporation | Hemphill | Hall #303 | 15,100 | 21131844 |
| 320239 | Oct 8, 1986 | Oct 8, 1986 | Dyco Petroleum Corporation | Hemphill | Singleton Farms #1089 | 16,100 | 21131841 |
| 320239Amendment | Oct 8, 1986 | Oct 8, 1986 | Dyco Petroleum Corporation | Hemphill | Singleton Farms #1089 | 11,428 | 21131841 |
| 321333 | Sep 29, 1986 | Sep 29, 1986 | Dyco Petroleum Corporation | Hemphill | Singleton Farms #1088 | 14,300 | 21131843 |
| 304334 | Jul 18, 1986 | Jul 18, 1986 | Dyco Petroleum Corporation | Crockett | Shannon, M. A. Estate #1024 | 2,300 | 10535280 |
| 302903 | Jun 2, 1986 | Jun 2, 1986 | Dyco Petroleum Corporation | Ochiltree | Hurn #4912 | 9,200 | 35731830 |
| 302789 | Jun 2, 1986 | Jun 2, 1986 | Dyco Petroleum Corporation | Ochiltree | Pletcher #3000 | 9,200 | 35731829 |
| 302116 | May 14, 1986 | May 14, 1986 | Dyco Petroleum Corporation | Gaines | Edwards Estate #1-3 #103 | 12,850 | 16533525 |
| 302127 | May 14, 1986 | May 14, 1986 | Dyco Petroleum Corporation | Ochiltree | Suess-Pinkerton #4 | 8,700 | 35731827 |
| 301558 | Apr 28, 1986 | Apr 28, 1986 | Dyco Petroleum Corporation | Hemphill | George #108 | 14,500 | 21131830 |
| 300049 | Mar 24, 1986 | Mar 24, 1986 | Dyco Petroleum Corporation | Lipscomb | Schollenbarger #1280 | 10,600 | 29531706 |
| 297750 | Feb 13, 1986 | Feb 13, 1986 | Dyco Petroleum Corporation | Ochiltree | Hurn #3912 | 9,200 | 35731819 |
| 295718 | Jan 16, 1986 | Jan 16, 1986 | Dyco Petroleum Corporation | Ochiltree | Schoenhals #4937 | 9,200 | 35731810 |
| 294928 | Jan 9, 1986 | Jan 9, 1986 | Dyco Petroleum Corporation | Wheeler | Gentry-Wofford #1A | 17,000 | 48331272 |
| 294535 | Dec 31, 1985 | Dec 31, 1985 | Dyco Petroleum Corporation | Hemphill | Abraham, J. #1 | 11,000 | 21131814 |
| 292046 | Dec 6, 1985 | Dec 6, 1985 | Dyco Petroleum Corporation | Wheeler | Coltharp #1058 | 18,500 | 48331269 |
| 289883 | Nov 13, 1985 | Nov 13, 1985 | Dyco Petroleum Corporation | Ochiltree | Pletcher #2000 | 9,200 | 35731779 |
| 289858 | Nov 12, 1985 | Nov 12, 1985 | Dyco Petroleum Corporation | Ochiltree | Schoenhals #3937 | 9,200 | 35731777 |
| 286023 | Sep 27, 1985 | Sep 27, 1985 | Dyco Petroleum Corporation | Hemphill | Hall #203 | 15,400 | 21131793 |
| 285565 | Sep 24, 1985 | Sep 24, 1985 | Dyco Petroleum Corporation | Ochiltree | Schoenhals #2937 | 9,000 | 35731758 |
| 283264 | Aug 27, 1985 | Aug 27, 1985 | Dyco Petroleum Corporation | Ochiltree | Pletcher #1000 | 9,400 | 35731748 |
| 280601 | Jul 19, 1985 | Jul 19, 1985 | Dyco Petroleum Corporation | Lavaca | Neuhaus, H. E. #1 | 10,000 | 28500532 |
| 277795 | Jun 14, 1985 | Jun 14, 1985 | Dyco Petroleum Corporation | Ochiltree | Schoenhals #1937 | 9,400 | 35731723 |
| 272650 | Apr 18, 1985 | Apr 18, 1985 | Dyco Petroleum Corporation | Wheeler | Ivester #1057 | 18,300 | 48331255 |
| 270461 | Mar 22, 1985 | Mar 22, 1985 | Dyco Petroleum Corporation | Hemphill | Markham #1012 | 15,500 | 21131759 |
| 261916 | Dec 21, 1984 | Dec 21, 1984 | Dyco Petroleum Corporation | Wheeler | Davis, E. T. #3064 | 18,400 | 48331242 |
| 257619 | Nov 14, 1984 | Nov 14, 1984 | Dyco Petroleum Corporation | Wheeler | Mills Ranch #1083 | 23,000 | 48331237 |
| 255639 | Oct 25, 1984 | Oct 25, 1984 | Dyco Petroleum Corporation | Hemphill | Kiker-Amoco #106 | 15,000 | 21131630 |
| 241953 | Jun 13, 1984 | Jun 13, 1984 | Dyco Petroleum Corporation | Hemphill | Hall #103 | 15,100 | 21131695 |
| 233605 | Mar 27, 1984 | Mar 27, 1984 | Dyco Petroleum Corporation | Hemphill | Parker-Amoco #1019 | 14,750 | 21131677 |
| 219543 | Oct 6, 1983 | Oct 6, 1983 | Dyco Petroleum Corporation | Hemphill | Kiker Amoco #106 | 15,000 | 21131630 |
| 217778 | Sep 26, 1983 | Sep 26, 1983 | Dyco Petroleum Corporation | Hemphill | Meadows #205 | 14,350 | 21131635 |
| 210279 | Sep 6, 1983 | Sep 6, 1983 | Dyco Petroleum Corporation | Hemphill | Fillingim #1089 | 22,000 | 21131623 |
| 198015 | Jun 13, 1983 | Jun 13, 1983 | Dyco Petroleum Corporation | Jones | Swann, Sam A #1 | 5,054 | 25301519 |
| 193537 | May 5, 1983 | May 5, 1983 | Dyco Petroleum Corporation | Hemphill | Young Trust #104 | 14,750 | 21131589 |
| 189198 | Mar 22, 1983 | Mar 22, 1983 | Dyco Petroleum Corporation | Wheeler | Chandler #3 | 16,300 | 48331120 |
| 187918 | Mar 4, 1983 | Mar 4, 1983 | Dyco Petroleum Corporation | Hemphill | Malone #1019 | 14,850 | 21131577 |
| 184753 | Dec 31, 1982 | Dec 31, 1982 | Dyco Petroleum Corporation | Wheeler | Walker #130 | 15,550 | 48330975 |
| 181454 | Dec 29, 1982 | Dec 29, 1982 | Dyco Petroleum Corporation | Wheeler | Walker #130 | 15,550 | 48330975 |
| 179336 | Dec 8, 1982 | Dec 8, 1982 | Dyco Petroleum Corporation | Hemphill | Meadows #15 | 14,300 | 21131470 |
| 174751 | Oct 19, 1982 | Oct 19, 1982 | Dyco Petroleum Corporation | Wheeler | Caperton #1 | 16,352 | 48330753 |
| 171972 | Sep 16, 1982 | Sep 16, 1982 | Dyco Petroleum Corporation | Wheeler | Maxwell Unit #1-23 | 14,873 | 48330655 |
| 166403 | Jul 13, 1982 | Jul 13, 1982 | Dyco Petroleum Corporation | Liberty | McDonald #1-5 | 9,100 | 29131534 |
| 165613 | Jul 5, 1982 | Jul 5, 1982 | Dyco Petroleum Corporation | Wheeler | Tipps Unit #1 | 14,750 | 48330459 |
| 162671 | Jun 2, 1982 | Jun 2, 1982 | Dyco Petroleum Corporation | Wheeler | Britt #129 | 16,200 | 48331054 |
| 160854 | May 18, 1982 | May 18, 1982 | Dyco Petroleum Corporation | Hockley | Kempson-Witt #1 | 4,824 | 21931031 |
| 155369 | Mar 31, 1982 | Mar 31, 1982 | Dyco Petroleum Corporation | Hemphill | Simpson-Levitt #1-41 | 15,000 | 21131491 |
| 173179 | Feb 24, 1982 | Feb 24, 1982 | Dyco Petroleum Corporation | Hemphill | Meadows #1-5 | 14,300 | 21131470 |
| 152176 | Feb 17, 1982 | Feb 17, 1982 | Dyco Petroleum Corporation | Wheeler | Walker #1-30 | 15,550 | 48330975 |
| 141201 | Nov 19, 1981 | Nov 19, 1981 | Dyco Petroleum Corporation | Hemphill | Hickey Unit #147 | 8,350 | 21131071 |
| 136472 | Oct 7, 1981 | Oct 7, 1981 | Dyco Petroleum Corporation | Ochiltree | Kamas #1 121 | 9,400 | 35731209 |
| 132336 | Sep 1, 1981 | Sep 1, 1981 | Dyco Petroleum Corporation | Hockley | Perkins Estate #2 | 5,000 | 21933280 |
| 131857 | Sep 1, 1981 | Sep 1, 1981 | Dyco Petroleum Corporation | Hockley | Rucker #2 | 5,000 | 21933279 |
| 131856 | Sep 1, 1981 | Sep 1, 1981 | Dyco Petroleum Corporation | Hockley | Brown #2 | 5,000 | 21933278 |
| 130466 | Aug 10, 1981 | Aug 10, 1981 | Dyco Petroleum Corporation | Hemphill | Hefley #3 | 15,000 | 21131368 |
| 124842 | Jun 22, 1981 | Jun 22, 1981 | Dyco Petroleum Corporation | Hemphill | Fillingim #1-88 | 14,225 | 21131335 |
| 118180 | May 12, 1981 | May 12, 1981 | Dyco Petroleum Corporation | Wheeler | Campbell-Webb #1-28 | 16,500 | 48330862 |
| 113076 | Jan 26, 1981 | Jan 26, 1981 | Dyco Petroleum Corporation | Ochiltree | Schultz #1-145 | 8,400 | 35731099 |
| 106622 | Dec 30, 1980 | Dec 30, 1980 | Dyco Petroleum Corporation | Hemphill | Lee #1-5 | 15,600 | 21131305 |
| 103263 | Dec 23, 1980 | Dec 23, 1980 | Dyco Petroleum Corporation | Hemphill | Vollmert #1-1 | 11,850 | 21131302 |
| 54265 | Jul 16, 1980 | Jul 16, 1980 | Dyco Petroleum Corporation | Wheeler | Maxwell #1-26 | 14,850 | 48330655 |
| 83449 | Jun 10, 1980 | Jun 10, 1980 | Dyco Petroleum Corporation | Wheeler | D'spain #1-5 | 15,400 | 48330769 |
| 82120 | May 27, 1980 | May 27, 1980 | Dyco Petroleum Corporation | Ochiltree | Duke #145 | 9,085 | 35731022 |
| 81890 | May 1, 1980 | May 1, 1980 | Dyco Petroleum Corporation | Hemphill | Hardin #1-12 | 12,100 | 21131221 |
| 78688 | Apr 18, 1980 | Apr 18, 1980 | Dyco Petroleum Corporation | Wheeler | Caperton #1 | 9,900 | 48330753 |
| 80415 | Apr 11, 1980 | Apr 11, 1980 | Dyco Petroleum Corporation | Hemphill | Steen, Glisan #1-13 | 15,300 | 21131208 |
| 75532 | Mar 10, 1980 | Mar 10, 1980 | Dyco Petroleum Corporation | Hemphill | Campbell, J. W. #2-36 | 11,550 | 21131206 |
| 62600 | Nov 1, 1979 | Nov 1, 1979 | Dyco Petroleum Corporation | Lipscomb | Frass #1-105 | 8,950 | 29530731 |
| 59577 | Oct 3, 1979 | Oct 3, 1979 | Dyco Petroleum Corporation | Roberts | Osborne "A" #1 | 10,937 | 39330734 |
| 57931 | Sep 13, 1979 | Sep 13, 1979 | Dyco Petroleum Corporation | Hockley | Chappell, Frank #1 | 10,120 | 21932717 |
| 54138 | Jul 31, 1979 | Jul 31, 1979 | Dyco Petroleum Corporation | Lipscomb | Frass-Section 72 #1 | 8,975 | 29530689 |
| 48656 | May 16, 1979 | May 16, 1979 | Dyco Petroleum Corporation | Wheeler | Brewer #1-26 | 16,131 | 48330643 |
| 44890 | Mar 22, 1979 | Mar 22, 1979 | Dyco Petroleum Corporation | Jasper | Williams #1 | 14,110 | 24130316 |
| 43151 | Feb 26, 1979 | Feb 26, 1979 | Dyco Petroleum Corporation | Hockley | Lockett #2 | 10,700 | 21932662 |
| 42541 | Feb 14, 1979 | Feb 14, 1979 | Dyco Petroleum Corporation | Gray | Love, Thomas H. #1-55 | 12,643 | 17930676 |