| 503679 | Jan 4, 2001 | Jan 4, 2001 | United Oil & Minerals, Inc. | Lavaca | Eaves #2H | 12,700 | 28532690 |
| 503655 | Jan 4, 2001 | Jan 4, 2001 | United Oil & Minerals, Inc. | Brooks | Cage Ranch #4 | 12,000 | 04731917 |
| 503654 | Jan 4, 2001 | Jan 4, 2001 | United Oil & Minerals, Inc. | Nueces | Chapman #2 | 12,000 | 35533300 |
| 503653 | Jan 4, 2001 | Jan 4, 2001 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #2 | 12,000 | 04731898 |
| 502885 | Dec 11, 2000 | Dec 11, 2000 | United Oil & Minerals, Inc. | Lavaca | Freeman #1 | 6,200 | 28532837 |
| 502823 | Dec 8, 2000 | Dec 8, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #1 | 9,800 | 04731888 |
| 502691 | Dec 6, 2000 | Dec 6, 2000 | United Oil & Minerals, Inc. | Brooks | Cage Ranch #3 | 10,500 | 04731915 |
| 502691Amendment | Dec 6, 2000 | Dec 6, 2000 | United Oil & Minerals, Inc. | Brooks | Cage Ranch #3 | 11,500 | 04731915 |
| 502238 | Nov 21, 2000 | Nov 21, 2000 | United Oil & Minerals, Inc. | Wharton | Heyne #1 | 5,500 | 48134288 |
| 501707 | Nov 7, 2000 | Nov 7, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #13 | 13,000 | 28532833 |
| 501625 | Nov 6, 2000 | Nov 6, 2000 | United Oil & Minerals, Inc. | Brooks | Cage Ranch #2 | 10,500 | 04731912 |
| 500744 | Oct 13, 2000 | Oct 13, 2000 | United Oil & Minerals, Inc. | Wharton | Stockton #1 | 4,500 | 48134269 |
| 500743 | Oct 13, 2000 | Oct 13, 2000 | United Oil & Minerals, Inc. | Wharton | Raun #2 | 4,400 | 48134270 |
| 500742 | Oct 13, 2000 | Oct 13, 2000 | United Oil & Minerals, Inc. | Wharton | Davis #1 | 7,800 | 48134271 |
| 500741 | Oct 13, 2000 | Oct 13, 2000 | United Oil & Minerals, Inc. | Wharton | Hutchins-Peareson #1 | 5,000 | 48134272 |
| 500686 | Oct 12, 2000 | Oct 12, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #7 | 8,200 | 04731907 |
| 500682 | Oct 12, 2000 | Oct 12, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #6 | 8,000 | 04731908 |
| 499407 | Sep 8, 2000 | Sep 8, 2000 | United Oil & Minerals, Inc. | Wharton | Rasmussen #5 | 7,665 | 48134212 |
| 499357 | Sep 7, 2000 | Sep 7, 2000 | United Oil & Minerals, Inc. | Brooks | Garland Lasater #5 | 11,000 | 04731902 |
| 498657 | Aug 21, 2000 | Aug 21, 2000 | United Oil & Minerals, Inc. | Lavaca | Migl-Quinn #6 | 13,500 | 28532815 |
| 498077 | Aug 4, 2000 | Aug 4, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #3 | 6,000 | 04731901 |
| 498077Amendment | Aug 4, 2000 | Aug 4, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #3 | 8,000 | 04731901 |
| 498076 | Aug 4, 2000 | Aug 4, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #12 | 15,000 | 28532810 |
| 497925 | Aug 1, 2000 | Aug 1, 2000 | United Oil & Minerals, Inc. | Brooks | Cage Ranch #1 | 12,500 | 04731900 |
| 497075 | Jul 12, 2000 | Jul 12, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #1Y | 6,200 | 28532804 |
| 497075Amendment | Jul 12, 2000 | Jul 12, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #1Y | 6,200 | 28532804 |
| 496222 | Jun 15, 2000 | Jun 15, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #9 | 15,000 | 28532800 |
| 496213 | Jun 15, 2000 | Jun 15, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #11 | 13,500 | 28532799 |
| 496210 | Jun 15, 2000 | Jun 15, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #2 | 12,000 | 04731898 |
| 495695 | Jun 1, 2000 | Jun 1, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #14 | 11,700 | 28532795 |
| 494882 | May 9, 2000 | May 9, 2000 | United Oil & Minerals, Inc. | Wharton | Rasmussen #5 | 7,800 | 48134212 |
| 494882Amendment | May 9, 2000 | May 9, 2000 | United Oil & Minerals, Inc. | Wharton | Rasmussen #5 | 7,800 | 48134212 |
| 494306 | Apr 20, 2000 | Apr 20, 2000 | United Oil & Minerals, Inc. | Lavaca | Eaves #3 | 15,000 | 28532790 |
| 494230 | Apr 18, 2000 | Apr 18, 2000 | United Oil & Minerals, Inc. | Hidalgo | Yturria #1C | 10,000 | 21532763 |
| 493966 | Apr 11, 2000 | Apr 11, 2000 | United Oil & Minerals, Inc. | Wharton | Hutchins-Peareson #5 | 5,000 | 48134208 |
| 493966Amendment | Apr 11, 2000 | Apr 11, 2000 | United Oil & Minerals, Inc. | Wharton | Hutchins-Peareson #5 | 7,900 | 48134208 |
| 493966Amendment | Apr 11, 2000 | Apr 11, 2000 | United Oil & Minerals, Inc. | Wharton | Hutchins-Peareson #5 | 7,900 | 48134208 |
| 493346 | Mar 23, 2000 | Mar 23, 2000 | United Oil & Minerals, Inc. | Wharton | Morrison- State #1 | 5,500 | 48134203 |
| 493121 | Mar 15, 2000 | Mar 15, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #10 | 15,000 | 28532779 |
| 493121Amendment | Mar 15, 2000 | Mar 15, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #10 | 15,000 | 28532779 |
| 493120 | Mar 15, 2000 | Mar 15, 2000 | United Oil & Minerals, Inc. | Jackson | Gerald #7 | 5,000 | 23933060 |
| 493120Amendment | Mar 15, 2000 | Mar 15, 2000 | United Oil & Minerals, Inc. | Jackson | Gerald #7 | 5,000 | 23933060 |
| 492956 | Mar 10, 2000 | Mar 10, 2000 | United Oil & Minerals, Inc. | Nueces | Chapman Unit No. 1 #1 | 12,500 | 35533216 |
| 492956Amendment | Mar 10, 2000 | Mar 10, 2000 | United Oil & Minerals, Inc. | Nueces | Chapman Unit No. 1 #1 | 12,500 | 35533216 |
| 492050 | Feb 15, 2000 | Feb 15, 2000 | United Oil & Minerals, Inc. | Wharton | Hutchins Peareson No. B-4 #1 | 5,500 | 48134187 |
| 491940 | Feb 9, 2000 | Feb 9, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #1 | 9,000 | 04731888 |
| 491940Amendment | Feb 9, 2000 | Feb 9, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #1 | 9,800 | 04731888 |
| 491940Amendment | Feb 9, 2000 | Feb 9, 2000 | United Oil & Minerals, Inc. | Brooks | Lasater, Garland #1 | 9,800 | 04731888 |
| 490144 | Feb 2, 2000 | Feb 2, 2000 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #3 | 13,800 | 28532616 |
| 489785 | Nov 23, 1999 | Nov 23, 1999 | United Oil & Minerals, Inc. | Lavaca | United SWD #1 | 3,000 | 28532762 |
| 489749 | Nov 22, 1999 | Nov 22, 1999 | United Oil & Minerals, Inc. | Jefferson | Pole Lake #1 | 8,500 | 24532239 |
| 488456 | Oct 13, 1999 | Oct 13, 1999 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #8 | 13,000 | 28532751 |
| 488456Amendment | Oct 13, 1999 | Oct 13, 1999 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #8 | 14,100 | 28532751 |
| 487432 | Sep 10, 1999 | Sep 10, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #46 | 5,200 | 07932963 |
| 486731 | Aug 17, 1999 | Aug 17, 1999 | United Oil & Minerals, Inc. | Wharton | Rasmussen #4 | 7,900 | 48134136 |
| 486636 | Aug 13, 1999 | Aug 13, 1999 | United Oil & Minerals, Inc. | Wharton | Rasmussen #3 | 7,300 | 48134135 |
| 486215 | Jul 28, 1999 | Jul 28, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #302 | 5,200 | 07932959 |
| 486179 | Jul 27, 1999 | Jul 27, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #369 | 5,200 | 07932957 |
| 486178 | Jul 27, 1999 | Jul 27, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #348 | 5,200 | 07932956 |
| 486177 | Jul 27, 1999 | Jul 27, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #64 | 5,200 | 07932958 |
| 485872 | Jul 15, 1999 | Jul 15, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #31 | 5,200 | 07932954 |
| 485871 | Jul 15, 1999 | Jul 15, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #49 | 5,200 | 07932953 |
| 485870 | Jul 15, 1999 | Jul 15, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #70 | 5,200 | 07932952 |
| 485280 | Jun 17, 1999 | Jun 17, 1999 | United Oil & Minerals, Inc. | Colorado | Cochran #1 | 2,450 | 08932152 |
| 485280Amendment | Jun 17, 1999 | Jun 17, 1999 | United Oil & Minerals, Inc. | Colorado | Cochran #1 | 2,500 | 08932152 |
| 484901 | Jun 3, 1999 | Jun 3, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #144A | 5,200 | 07932951 |
| 484707 | May 21, 1999 | May 21, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #65 | 5,200 | 07932949 |
| 484643 | May 19, 1999 | May 19, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #50 | 5,200 | 07932948 |
| 484419 | May 12, 1999 | May 12, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #367 | 5,200 | 07932947 |
| 484406 | May 12, 1999 | May 12, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #303 | 5,200 | 07932946 |
| 484405 | May 12, 1999 | May 12, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #226A | 5,200 | 07932944 |
| 484404 | May 12, 1999 | May 12, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot #163 | 5,200 | 07932945 |
| 484403 | May 12, 1999 | May 12, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #308 | 5,200 | 07932943 |
| 484402 | May 12, 1999 | May 12, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #388 | 5,200 | 07932942 |
| 484214 | Apr 29, 1999 | Apr 29, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #309 | 5,200 | 07932941 |
| 484213 | Apr 29, 1999 | Apr 29, 1999 | United Oil & Minerals, Inc. | Cochran | Buckshot East #446 | 5,200 | 07932940 |
| 484141 | Apr 27, 1999 | Apr 27, 1999 | United Oil & Minerals, Inc. | Cochran | Frost #324 | 5,200 | 07932939 |
| 482963 | Feb 26, 1999 | Feb 26, 1999 | United Oil & Minerals, Inc. | Lavaca | Eaves #2 | 13,000 | 28532690 |
| 480824 | Nov 12, 1998 | Nov 12, 1998 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #6 | 15,000 | 28532664 |
| 480327 | Oct 21, 1998 | Oct 21, 1998 | United Oil & Minerals, Inc. | Lavaca | Migl-Quinn #3A | 15,000 | 28532659 |
| 480075 | Oct 16, 1998 | Oct 16, 1998 | United Oil & Minerals, Inc. | Wharton | Lay #4 | 5,000 | 48134084 |
| 480175 | Oct 15, 1998 | Oct 15, 1998 | United Oil & Minerals, Inc. | Cochran | Frost #304 | 5,100 | 07932932 |
| 480174 | Oct 15, 1998 | Oct 15, 1998 | United Oil & Minerals, Inc. | Cochran | Buckshot Unit #131A | 5,100 | 07932931 |
| 479997 | Oct 8, 1998 | Oct 8, 1998 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #7 | 15,000 | 28532657 |
| 479997Amendment | Oct 8, 1998 | Oct 8, 1998 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #7 | 15,000 | 28532657 |
| 479813 | Oct 6, 1998 | Oct 6, 1998 | United Oil & Minerals, Inc. | Jackson | Shoop #3 | 5,000 | 23933015 |
| 479812 | Oct 6, 1998 | Oct 6, 1998 | United Oil & Minerals, Inc. | Wharton | Raun, N. #3 | 5,000 | 48134079 |
| 479811 | Oct 6, 1998 | Oct 6, 1998 | United Oil & Minerals, Inc. | Wharton | Raun #1 | 8,200 | 48134080 |
| 478855 | Aug 19, 1998 | Aug 19, 1998 | United Oil & Minerals, Inc. | Lavaca | French Estate #1 | 15,000 | 28532644 |
| 477829 | Jul 10, 1998 | Jul 10, 1998 | United Oil & Minerals, Inc. | Lavaca | Migl-Quinn #5 | 15,000 | 28532632 |
| 477517 | Jun 30, 1998 | Jun 30, 1998 | United Oil & Minerals, Inc. | Colorado | Duncan #1 | 7,300 | 08932058 |
| 477517Amendment | Jun 30, 1998 | Jun 30, 1998 | United Oil & Minerals, Inc. | Colorado | Duncan #1 | 2,350 | 08932058 |
| 477561 | Jun 29, 1998 | Jun 29, 1998 | United Oil & Minerals, Inc. | Garza | Tot #4H | 2,200 | 16933522 |
| 477561Amendment | Jun 29, 1998 | Jun 29, 1998 | United Oil & Minerals, Inc. | Garza | Tot #4H | 2,200 | 16933522 |
| 477491 | Jun 26, 1998 | Jun 26, 1998 | United Oil & Minerals, Inc. | Lavaca | Eaves #1 | 15,000 | 28532626 |
| 477490 | Jun 26, 1998 | Jun 26, 1998 | United Oil & Minerals, Inc. | Lavaca | Migl-Quinn #2A | 11,500 | 28532627 |
| 477007 | Jun 9, 1998 | Jun 9, 1998 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #3 | 15,000 | 28532616 |
| 476719 | May 29, 1998 | May 29, 1998 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #2B | 17,500 | 28532608 |
| 474691 | Mar 24, 1998 | Mar 24, 1998 | United Oil & Minerals, Inc. | Lavaca | Pilgreen #5 | 15,000 | 28532589 |
| 474392 | Mar 20, 1998 | Mar 20, 1998 | United Oil & Minerals, Inc. | Ward | Davis-Dorr "A" #10 | 2,800 | 47534558 |