| 394320 | Nov 27, 1991 | Nov 27, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1604D | 7,825 | 00337028 |
| 394184 | Nov 26, 1991 | Nov 26, 1991 | Union Oil Company of California | Howard | Otis Chalk #5 | 3,132 | 22702703 |
| 394303 | Nov 21, 1991 | Nov 21, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #3307 D | 7,950 | 00337027 |
| 394302 | Nov 21, 1991 | Nov 21, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1806CT | 7,600 | 00337026 |
| 394132 | Nov 21, 1991 | Nov 21, 1991 | Union Oil Company of California | Ector | Toad "A" #10 | 5,350 | 13536552 |
| 394325 | Nov 20, 1991 | Nov 20, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #3502D | 7,700 | 00337031 |
| 394323 | Nov 20, 1991 | Nov 20, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #2303D | 7,775 | 00337030 |
| 394322 | Nov 20, 1991 | Nov 20, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1701D | 7,800 | 00337029 |
| 393598 | Nov 19, 1991 | Nov 19, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "U" (Amoco) #2 | 8,740 | 00336949 |
| 393501 | Nov 18, 1991 | Nov 18, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #4718D | 8,007 | 00302664 |
| 394030 | Nov 14, 1991 | Nov 14, 1991 | Union Oil Company of California | Ector | Toad "A" #9 | 5,350 | 13536550 |
| 393919 | Nov 12, 1991 | Nov 12, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #3305D | 8,075 | 00337022 |
| 393918 | Nov 12, 1991 | Nov 12, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #3306D | 7,850 | 00337021 |
| 393917 | Nov 12, 1991 | Nov 12, 1991 | Union Oil Company of California | Andrews | University "JC" #4 | 9,990 | 00337024 |
| 393916 | Nov 12, 1991 | Nov 12, 1991 | Union Oil Company of California | Andrews | University "JB" #3 | 9,900 | 00337023 |
| 393776 | Nov 7, 1991 | Nov 7, 1991 | Union Oil Company of California | Andrews | Antelope University #4 | 9,980 | 00337019 |
| 393776Amendment | Nov 7, 1991 | Nov 7, 1991 | Union Oil Company of California | Andrews | Antelope University #4 | 9,980 | 00337019 |
| 391419 | Sep 3, 1991 | Sep 3, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "D" #38 | 9,300 | 00335319 |
| 391408 | Sep 3, 1991 | Sep 3, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "D" #32 | 9,750 | 00335017 |
| 391407 | Sep 3, 1991 | Sep 3, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "H" #27 | 9,271 | 00335160 |
| 391406 | Sep 3, 1991 | Sep 3, 1991 | Union Oil Company of California | Andrews | Halliday, H. J. #3A | 9,250 | 00335312 |
| 391405 | Sep 3, 1991 | Sep 3, 1991 | Union Oil Company of California | Andrews | Ford #6 | 9,308 | 00334963 |
| 391375 | Aug 30, 1991 | Aug 30, 1991 | Union Oil Company of California | Ector | Toad "A" #8 | 5,350 | 13536509 |
| 389016 | Aug 29, 1991 | Aug 29, 1991 | Union Oil Company of California | Montague | Keck, L. "A" #24 | 945 | 33732882 |
| 389011 | Aug 29, 1991 | Aug 29, 1991 | Union Oil Company of California | Montague | Keck, L. "A" #25 | 940 | 33732881 |
| 389010 | Aug 29, 1991 | Aug 29, 1991 | Union Oil Company of California | Montague | Keck, L. "A" #23 | 940 | 33732880 |
| 391142 | Aug 22, 1991 | Aug 22, 1991 | Union Oil Company of California | Andrews | Cowden, E. P. "T" #3 | 13,500 | 00336978 |
| 391142Amendment | Aug 22, 1991 | Aug 22, 1991 | Union Oil Company of California | Andrews | Cowden, E. P. "T" #3 | 12,950 | 00336978 |
| 390432 | Aug 1, 1991 | Aug 1, 1991 | Union Oil Company of California | Lipscomb | Schoenhals #3861 | 10,150 | 29531953 |
| 389565 | Jul 2, 1991 | Jul 2, 1991 | Union Oil Company of California | Gaines | North Riley Unit #149R | 7,350 | 16534367 |
| 389367 | Jun 26, 1991 | Jun 26, 1991 | Union Oil Company of California | Andrews | Ashton #4 | 9,500 | 00336959 |
| 389288 | Jun 24, 1991 | Jun 24, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1254 | 7,350 | 16534364 |
| 389287 | Jun 24, 1991 | Jun 24, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1304 | 7,350 | 16534365 |
| 388969 | Jun 19, 1991 | Jun 19, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "D" #32 | 9,750 | 00335017 |
| 388967 | Jun 19, 1991 | Jun 19, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "D" #38 | 9,300 | 00335319 |
| 388955 | Jun 13, 1991 | Jun 13, 1991 | Union Oil Company of California | Andrews | Ford #6 | 9,308 | 00334963 |
| 388954 | Jun 13, 1991 | Jun 13, 1991 | Union Oil Company of California | Andrews | Ford #5 | 9,236 | 00334817 |
| 388869 | Jun 11, 1991 | Jun 11, 1991 | Union Oil Company of California | Andrews | Ford #1 | 9,763 | 00334178 |
| 388868 | Jun 11, 1991 | Jun 11, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "U" (Amoco) #2 | 9,800 | 00336949 |
| 388787 | Jun 7, 1991 | Jun 7, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1510CT | 7,630 | 00336948 |
| 388786 | Jun 7, 1991 | Jun 7, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1511CT | 7,640 | 00336947 |
| 388533 | May 31, 1991 | May 31, 1991 | Union Oil Company of California | Ector | Toad "A" #7 | 5,500 | 13536485 |
| 388466 | May 30, 1991 | May 30, 1991 | Union Oil Company of California | Reagan | Hughes "A" #1 | 10,702 | 38333096 |
| 388466Amendment | May 30, 1991 | May 30, 1991 | Union Oil Company of California | Reagan | Hughes "A" #1 | 10,702 | 38333096 |
| 388465 | May 30, 1991 | May 30, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1300 | 7,350 | 16534361 |
| 388274 | May 23, 1991 | May 23, 1991 | Union Oil Company of California | Andrews | Cowden, E. P. #2 | 13,500 | 00336940 |
| 388274Amendment | May 23, 1991 | May 23, 1991 | Union Oil Company of California | Andrews | Cowden, E. P. #2 | 13,500 | 00336940 |
| 388145 | May 20, 1991 | May 20, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #707CT | 7,610 | 00336933 |
| 387763 | May 14, 1991 | May 14, 1991 | Union Oil Company of California | Reeves | Evans, N. T. #6 | 6,450 | 38930865 |
| 387459 | May 8, 1991 | May 8, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1215 | 7,350 | 16534353 |
| 387555 | May 6, 1991 | May 6, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #2602D | 7,800 | 00336926 |
| 387066 | Apr 22, 1991 | Apr 22, 1991 | Union Oil Company of California | Andrews | Ford #4 | 9,257 | 00334816 |
| 386523 | Apr 10, 1991 | Apr 10, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1290 | 7,350 | 16534342 |
| 386247 | Apr 1, 1991 | Apr 1, 1991 | Union Oil Company of California | Andrews | Texaco Mineral Fee "K" #5 | 9,850 | 00336919 |
| 386167 | Mar 27, 1991 | Mar 27, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1253 | 7,350 | 16534335 |
| 386166 | Mar 27, 1991 | Mar 27, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1282 | 7,350 | 16534334 |
| 386165 | Mar 27, 1991 | Mar 27, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1272 | 7,350 | 16534333 |
| 386163 | Mar 27, 1991 | Mar 27, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1052 | 7,350 | 16534332 |
| 385709 | Mar 19, 1991 | Mar 19, 1991 | Union Oil Company of California | Hansford | Knutson #1 | 7,500 | 19531125 |
| 385746 | Mar 14, 1991 | Mar 14, 1991 | Union Oil Company of California | Borden | Reinecke Unit #235 | 6,780 | 03331394 |
| 385620 | Mar 12, 1991 | Mar 12, 1991 | Union Oil Company of California | Andrews | Parker, J.E. "J" #2 | 12,409 | 00307742 |
| 385619 | Mar 12, 1991 | Mar 12, 1991 | Union Oil Company of California | Andrews | Ford #3 | 9,250 | 00334815 |
| 385618 | Mar 12, 1991 | Mar 12, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "P" (Amoco) #18 | 9,840 | 00336219 |
| 385617 | Mar 12, 1991 | Mar 12, 1991 | Union Oil Company of California | Andrews | Halliday, H. J. #2A | 9,250 | 00335254 |
| 385615 | Mar 12, 1991 | Mar 12, 1991 | Union Oil Company of California | Andrews | Halliday, H.J. #3A | 9,250 | 00335312 |
| 385489 | Mar 8, 1991 | Mar 8, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1230 | 7,350 | 16534330 |
| 385488 | Mar 8, 1991 | Mar 8, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1284 | 7,350 | 16534329 |
| 385370 | Mar 5, 1991 | Mar 5, 1991 | Union Oil Company of California | Andrews | Phillips University "DD" #3 | 9,650 | 00336908 |
| 385103 | Feb 25, 1991 | Feb 25, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1246 | 7,350 | 16534322 |
| 385102 | Feb 25, 1991 | Feb 25, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1231 | 7,350 | 16534323 |
| 384969 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #604CT | 7,550 | 00336905 |
| 384969Amendment | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #604CT | 7,750 | 00336905 |
| 384968 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1245 | 7,350 | 16534320 |
| 384967 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Dollardhide Unit #1601CT | 7,570 | 00336906 |
| 384967Amendment | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Dollardhide Unit #1601CT | 7,770 | 00336906 |
| 384966 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1244 | 7,350 | 16534321 |
| 384964 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1602CT | 7,550 | 00336904 |
| 384963 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1603CT | 7,570 | 00336903 |
| 384963Amendment | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Dollarhide Unit #1603CT | 7,740 | 00336903 |
| 384962 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1054 | 7,350 | 16534319 |
| 384961 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1043 | 7,350 | 16534317 |
| 384897 | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "C" #3 | 12,745 | 00304808 |
| 384897Amendment | Feb 21, 1991 | Feb 21, 1991 | Union Oil Company of California | Andrews | Parker, J. E. "C" #3 | 9,678 | 00304808 |
| 384623 | Feb 13, 1991 | Feb 13, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1233 | 7,350 | 16534316 |
| 385616 | Feb 12, 1991 | Feb 12, 1991 | Union Oil Company of California | Andrews | Ford #2 | 9,259 | 00334550 |
| 384534 | Feb 11, 1991 | Feb 11, 1991 | Union Oil Company of California | Brewster | 02 Ranch #1 | 6,000 | 04330301 |
| 384100 | Jan 31, 1991 | Jan 31, 1991 | Union Oil Company of California | Crane | University "B" #2 | 12,019 | 10331046 |
| 383990 | Jan 29, 1991 | Jan 29, 1991 | Union Oil Company of California | Gaines | North Riley Unit #159R | 7,350 | 16534303 |
| 383989 | Jan 29, 1991 | Jan 29, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1103 | 7,350 | 16534302 |
| 383988 | Jan 29, 1991 | Jan 29, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1104 | 7,350 | 16534301 |
| 383660 | Jan 21, 1991 | Jan 21, 1991 | Union Oil Company of California | Andrews | Antelope University #3 | 9,910 | 00336877 |
| 383584 | Jan 17, 1991 | Jan 17, 1991 | Union Oil Company of California | Gaines | North Riley Unit #1102 | 7,350 | 16534297 |
| 383355 | Jan 11, 1991 | Jan 11, 1991 | Union Oil Company of California | Lipscomb | Schoenhals #1 | 9,900 | 29531918 |
| 383355Amendment | Jan 11, 1991 | Jan 11, 1991 | Union Oil Company of California | Lipscomb | Schoenhals #1 | 9,900 | 29531918 |
| 382148Amendment | Jan 10, 1991 | Jan 10, 1991 | Union Oil Company of California | Ector | Toad #11 | 5,350 | 13536389 |
| 383661 | Jan 2, 1991 | Jan 2, 1991 | Union Oil Company of California | Andrews | University "JC" #3 | 9,950 | 00336876 |
| 381440 | Dec 26, 1990 | Dec 26, 1990 | Union Oil Company of California | Howard | Chalk, Otis #8 | 3,179 | 22703553 |
| 382420 | Dec 14, 1990 | Dec 14, 1990 | Union Oil Company of California | Andrews | Cowden, E. P. #1 | 13,000 | 00336866 |
| 382420Amendment | Dec 14, 1990 | Dec 14, 1990 | Union Oil Company of California | Andrews | Cowden, E. P. #1 | 12,851 | 00336866 |
| 382420Amendment | Dec 14, 1990 | Dec 14, 1990 | Union Oil Company of California | Andrews | Cowden, E. P. #1 | 12,851 | 00336866 |