| 128904 | Aug 4, 1981 | Aug 4, 1981 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #426 | 3,300 | 33532088 |
| 128898 | Aug 4, 1981 | Aug 4, 1981 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #422 | 3,300 | 33532093 |
| 128844 | Aug 4, 1981 | Aug 4, 1981 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #423 | 3,300 | 33532086 |
| 125223 | Jul 15, 1981 | Jul 15, 1981 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #9 WS | 550 | 33532059 |
| 122816 | Jun 23, 1981 | Jun 23, 1981 | Union Texas Petroleum Corp. | Irion | Farmar 38 #1 | 7,250 | 23531779 |
| 120442 | Jun 10, 1981 | Jun 10, 1981 | Union Texas Petroleum Corp. | Terry | Minton #1 | 13,705 | 44530951 |
| 120407 | Jun 9, 1981 | Jun 9, 1981 | Union Texas Petroleum Corp. | Presidio | Frenchman Hills #1 | 13,888 | 37730436 |
| 119758 | Jun 2, 1981 | Jun 2, 1981 | Union Texas Petroleum Corp. | Hardin | Kirby Lumber Company #5 | 12,600 | 19931607 |
| 132674 | May 19, 1981 | May 19, 1981 | Union Texas Petroleum Corp. | Hardin | Kirby Lumber Co. #2 | 11,325 | 19981598 |
| 117950 | May 13, 1981 | May 13, 1981 | Union Texas Petroleum Corp. | Andrews | University -E- #4 | 13,800 | 00332771 |
| 117619 | May 11, 1981 | May 11, 1981 | Union Texas Petroleum Corp. | Terry | Phipps #2 WIW | 11,900 | 44530797 |
| 115921 | Apr 24, 1981 | Apr 24, 1981 | Union Texas Petroleum Corp. | Ward | China Lake #1 | 21,000 | 47532213 |
| 112648 | Mar 19, 1981 | Mar 19, 1981 | Union Texas Petroleum Corp. | Irion | Sugg "12" #1 | 7,700 | 23531737 |
| 112647 | Mar 19, 1981 | Mar 19, 1981 | Union Texas Petroleum Corp. | Irion | Sugg "21" #1 | 7,700 | 23531736 |
| 109867 | Feb 27, 1981 | Feb 27, 1981 | Union Texas Petroleum Corp. | Loving | Red Bluff "8" #1 | 12,800 | 30130294 |
| 108049 | Feb 10, 1981 | Feb 10, 1981 | Union Texas Petroleum Corp. | Hardin | Kirby Lumber Company #4 | 12,650 | 19931558 |
| 103421 | Dec 30, 1980 | Dec 30, 1980 | Union Texas Petroleum Corp. | Terry | Crown #1 | 13,600 | 44530896 |
| 103124 | Dec 23, 1980 | Dec 23, 1980 | Union Texas Petroleum Corp. | Hardin | Kirby Lumber Company #3 | 12,600 | 19931520 |
| 98014 | Nov 5, 1980 | Nov 5, 1980 | Union Texas Petroleum Corp. | Ward | China Lake #1 | 21,000 | 47532213 |
| 97999 | Nov 5, 1980 | Nov 5, 1980 | Union Texas Petroleum Corp. | Terry | Phipps #2 | 11,545 | 44530797 |
| 97120 | Oct 27, 1980 | Oct 27, 1980 | Union Texas Petroleum Corp. | Irion | Farmar "43-10" #3 | 7,400 | 23531644 |
| 96947 | Oct 27, 1980 | Oct 27, 1980 | Union Texas Petroleum Corp. | Hardin | Kirby Lumber Company #2 | 16,500 | 19931446 |
| 96067 | Oct 20, 1980 | Oct 20, 1980 | Union Texas Petroleum Corp. | Terry | Bullard, Sara #4 | 13,800 | 44530878 |
| 91546 | Aug 18, 1980 | Aug 18, 1980 | Union Texas Petroleum Corp. | Terry | Wellman Unit #7-6 | 10,200 | 44530864 |
| 89231 | Aug 8, 1980 | Aug 8, 1980 | Union Texas Petroleum Corp. | Wheeler | Black, Ona #1-49 | 24,500 | 48330780 |
| 89387 | Aug 4, 1980 | Aug 4, 1980 | Union Texas Petroleum Corp. | Hardin | Kirby Lumber Company #2 | 11,325 | 19931446 |
| 88075 | Jul 29, 1980 | Jul 29, 1980 | Union Texas Petroleum Corp. | Gaines | Norman #2 | 12,330 | 16530028 |
| 88100 | Jul 23, 1980 | Jul 23, 1980 | Union Texas Petroleum Corp. | Andrews | Cowden, W. F. #2 | 4,298 | 00300196 |
| 83001 | Jun 5, 1980 | Jun 5, 1980 | Union Texas Petroleum Corp. | Andrews | University "G" #3 | 12,560 | 00310028 |
| 82663 | Jun 2, 1980 | Jun 2, 1980 | Union Texas Petroleum Corp. | Gaines | Webb, H. L. #1 | 13,133 | 16500139 |
| 81589 | May 20, 1980 | May 20, 1980 | Union Texas Petroleum Corp. | Reeves | Utp-NRM Chaparral #1 | 22,300 | 38931103 |
| 79600 | Apr 29, 1980 | Apr 29, 1980 | Union Texas Petroleum Corp. | Andrews | University "G" #4 | 13,700 | 00332296 |
| 79077 | Apr 24, 1980 | Apr 24, 1980 | Union Texas Petroleum Corp. | Irion | Sugg "1896" #1 | 6,699 | 23530749 |
| 78245 | Apr 14, 1980 | Apr 14, 1980 | Union Texas Petroleum Corp. | Upton | Lane, J. S. #5 | 10,300 | 46131305 |
| 78370 | Apr 7, 1980 | Apr 7, 1980 | Union Texas Petroleum Corp. | Crockett | University "21-30" B #1 | 7,400 | 10532756 |
| 78522 | Apr 2, 1980 | Apr 2, 1980 | Union Texas Petroleum Corp. | Garza | Connell Estate #5 | 3,275 | 16900162 |
| 75480 | Mar 18, 1980 | Mar 18, 1980 | Union Texas Petroleum Corp. | Yoakum | Powell, Nora #1 | 12,975 | 50100294 |
| 73686 | Feb 27, 1980 | Feb 27, 1980 | Union Texas Petroleum Corp. | Terry | Odc "81" #2 | 13,600 | 44530825 |
| 73042 | Feb 20, 1980 | Feb 20, 1980 | Union Texas Petroleum Corp. | Irion | Farmar "45-10" #2 | 7,400 | 23531520 |
| 73040 | Feb 20, 1980 | Feb 20, 1980 | Union Texas Petroleum Corp. | Irion | Farmar "43-10" #2 | 7,400 | 23531519 |
| 70069 | Jan 18, 1980 | Jan 18, 1980 | Union Texas Petroleum Corp. | Cochran | Veal #40 | 5,200 | 07931184 |
| 70068 | Jan 18, 1980 | Jan 18, 1980 | Union Texas Petroleum Corp. | Cochran | Veal #39 | 5,200 | 07931183 |
| 68725 | Jan 7, 1980 | Jan 7, 1980 | Union Texas Petroleum Corp. | Gaines | Norman #12 | 9,500 | 16531737 |
| 68587 | Jan 4, 1980 | Jan 4, 1980 | Union Texas Petroleum Corp. | Gaines | Northrup #1 | 5,359 | 16531736 |
| 65070 | Nov 30, 1979 | Nov 30, 1979 | Union Texas Petroleum Corp. | Wheeler | Young #1-32 | 22,500 | 48330712 |
| 63734 | Nov 9, 1979 | Nov 9, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #10-21 | 3,350 | 33531549 |
| 63731 | Nov 9, 1979 | Nov 9, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook, Southwest Unit #4-21 | 3,350 | 33531543 |
| 63363 | Nov 9, 1979 | Nov 9, 1979 | Union Texas Petroleum Corp. | Waller | Rice Institute #1A | 10,500 | 47330319 |
| 63361 | Nov 9, 1979 | Nov 9, 1979 | Union Texas Petroleum Corp. | Hardin | Kirby Lumber Co. #1 | 12,600 | 19931368 |
| 63447 | Oct 26, 1979 | Oct 26, 1979 | Union Texas Petroleum Corp. | Cochran | Slaughter, N. W. Unit #80 | 5,100 | 07931132 |
| 62029 | Oct 26, 1979 | Oct 26, 1979 | Union Texas Petroleum Corp. | Ward | University "18-20" #2 | 11,600 | 47531972 |
| 61836 | Oct 25, 1979 | Oct 25, 1979 | Union Texas Petroleum Corp. | Terry | Phipps #2 | 11,700 | 44530797 |
| 63479 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #10-18 | 3,350 | 33531546 |
| 63478 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #10-19 | 3,350 | 33531547 |
| 63475 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #10-20 | 3,350 | 33531548 |
| 63473 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #11-5 | 3,350 | 33531544 |
| 63470 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #11-6 | 3,350 | 33531545 |
| 63468 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #4-18 | 4,100 | 33531540 |
| 63466 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #4-19 | 3,350 | 33531541 |
| 63463 | Oct 23, 1979 | Oct 23, 1979 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #4-20 | 3,350 | 33531542 |
| 61484 | Oct 22, 1979 | Oct 22, 1979 | Union Texas Petroleum Corp. | Terry | Bullard, Sara #3 | 13,600 | 44530796 |
| 61482 | Oct 22, 1979 | Oct 22, 1979 | Union Texas Petroleum Corp. | Terry | Bullard, Sara #2 | 13,600 | 44530795 |
| 61112 | Oct 18, 1979 | Oct 18, 1979 | Union Texas Petroleum Corp. | Gaines | Hall #1 | 7,550 | 16531678 |
| 60212 | Oct 11, 1979 | Oct 11, 1979 | Union Texas Petroleum Corp. | Irion | Farmar "43-10" #1 | 7,400 | 23531443 |
| 60211 | Oct 11, 1979 | Oct 11, 1979 | Union Texas Petroleum Corp. | Irion | Farmar "45-10" #1 | 7,400 | 23531442 |
| 59652 | Oct 3, 1979 | Oct 3, 1979 | Union Texas Petroleum Corp. | Ward | Sealy Estate "60" #1 | 16,420 | 47531955 |
| 57938 | Sep 13, 1979 | Sep 13, 1979 | Union Texas Petroleum Corp. | Wheeler | Jones, T. D. #1-23 | 16,000 | 48330680 |
| 56413 | Aug 24, 1979 | Aug 24, 1979 | Union Texas Petroleum Corp. | Terry | Odc "81" #1 | 13,600 | 44530788 |
| 55061 | Aug 9, 1979 | Aug 9, 1979 | Union Texas Petroleum Corp. | Upton | Shirk, Mary K. #4 | 10,100 | 46181503 |
| 54225 | Aug 2, 1979 | Aug 2, 1979 | Union Texas Petroleum Corp. | Upton | Shirk, Mary K. #2 | 10,100 | 46110291 |
| 52170 | Jul 3, 1979 | Jul 3, 1979 | Union Texas Petroleum Corp. | Terry | Phipps #1 | 11,700 | 44530779 |
| 51694 | Jun 27, 1979 | Jun 27, 1979 | Union Texas Petroleum Corp. | Pecos | Blackstone-Slaughter "14" #1 | 10,009 | 37132793 |
| 50594 | Jun 5, 1979 | Jun 5, 1979 | Union Texas Petroleum Corp. | Ward | University "18-19" #2 | 11,500 | 47531888 |
| 47780 | May 3, 1979 | May 3, 1979 | Union Texas Petroleum Corp. | Upton | South Velma "2" #1 | 10,017 | 46131433 |
| 47323 | Apr 26, 1979 | Apr 26, 1979 | Union Texas Petroleum Corp. | Irion | Skelly-Sugg "45" #2 | 7,450 | 23531373 |
| 47277 | Apr 26, 1979 | Apr 26, 1979 | Union Texas Petroleum Corp. | Ward | University "39-18" #1 | 11,550 | 47582090 |
| 46557 | Apr 17, 1979 | Apr 17, 1979 | Union Texas Petroleum Corp. | Upton | Shirk, Mary K. #1 | 10,100 | 46110177 |
| 45860 | Apr 5, 1979 | Apr 5, 1979 | Union Texas Petroleum Corp. | Terry | Bullard, Sara #1 | 13,600 | 44530769 |
| 42853 | Feb 20, 1979 | Feb 20, 1979 | Union Texas Petroleum Corp. | Terry | Mathie #2 | 11,700 | 44530757 |
| 39664 | Dec 28, 1978 | Dec 28, 1978 | Union Texas Petroleum Corp. | Terry | Wellman Unit #8-8 | 10,200 | 44530741 |
| 38583 | Dec 11, 1978 | Dec 11, 1978 | Union Texas Petroleum Corp. | Irion | Farmar "44-10" #1 | 7,400 | 23531339 |
| 33608 | Sep 27, 1978 | Sep 27, 1978 | Union Texas Petroleum Corp. | Ector | Moss #2 | 12,467 | 13501941 |
| 34189 | Sep 21, 1978 | Sep 21, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #10-16 | 3,250 | 33531382 |
| 34188 | Sep 21, 1978 | Sep 21, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #10-15 | 3,250 | 33531377 |
| 34187 | Sep 21, 1978 | Sep 21, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #4-17 | 3,250 | 33531378 |
| 34186 | Sep 21, 1978 | Sep 21, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #4-16 | 3,250 | 33531379 |
| 34178 | Sep 21, 1978 | Sep 21, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #21-6 | 3,250 | 33531376 |
| 34177 | Sep 21, 1978 | Sep 21, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #21-5 | 3,250 | 33531380 |
| 34176 | Sep 21, 1978 | Sep 21, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #10-17 | 3,250 | 33531381 |
| 33068 | Sep 20, 1978 | Sep 20, 1978 | Union Texas Petroleum Corp. | Ward | University "18-20" #1 | 11,500 | 47531774 |
| 33066 | Sep 20, 1978 | Sep 20, 1978 | Union Texas Petroleum Corp. | Mitchell | Westbrook, S. W. Unit #1-10 | 3,250 | 33531383 |
| 30526 | Aug 11, 1978 | Aug 11, 1978 | Union Texas Petroleum Corp. | Terry | Brownfield #1 | 9,895 | 44500076 |
| 30445 | Aug 2, 1978 | Aug 2, 1978 | Union Texas Petroleum Corp. | Irion | Farmar "56" #7 | 7,400 | 23531303 |
| 28777 | Jul 19, 1978 | Jul 19, 1978 | Union Texas Petroleum Corp. | Irion | Farmar "56" #8 | 7,400 | 23531302 |
| 28775 | Jul 19, 1978 | Jul 19, 1978 | Union Texas Petroleum Corp. | Irion | Farmar "56" #6 | 7,400 | 23531301 |
| 28691 | Jul 18, 1978 | Jul 18, 1978 | Union Texas Petroleum Corp. | Pecos | Mobil-Sibley #1 | 3,520 | 37183134 |
| 28488 | Jul 12, 1978 | Jul 12, 1978 | Union Texas Petroleum Corp. | Cochran | Slaughter,n.w. (San Andres) Unit #79 | 5,100 | 07930938 |
| 28486 | Jul 12, 1978 | Jul 12, 1978 | Union Texas Petroleum Corp. | Cochran | Slaughter,n.w. (San Andres) Unit #78 | 5,100 | 07930936 |
| 28485 | Jul 12, 1978 | Jul 12, 1978 | Union Texas Petroleum Corp. | Cochran | Slaughter, N. W. (San Andres)unt #73 | 5,100 | 07930937 |
| 27873 | Jul 3, 1978 | Jul 3, 1978 | Union Texas Petroleum Corp. | Irion | Farmar 57 #8 | 7,400 | 23531297 |