| 382184 | Jan 22, 1991 | Jan 22, 1991 | Union Texas Petroleum Corp. | Upton | Windam, R. S. "A" #2 | 11,900 | 46103903 |
| 379355 | Nov 9, 1990 | Nov 9, 1990 | Union Texas Petroleum Corp. | Jackson | Rose #1 | 10,500 | 23932560 |
| 379946 | Oct 22, 1990 | Oct 22, 1990 | Union Texas Petroleum Corp. | Jim Hogg | Weil #3 | 10,500 | 24731922 |
| 377863 | Oct 1, 1990 | Oct 1, 1990 | Union Texas Petroleum Corp. | Yoakum | Neste Morrow 377 #1 | 13,000 | 50133602 |
| 374345 | Jun 20, 1990 | Jun 20, 1990 | Union Texas Petroleum Corp. | Mitchell | Westbrook SW Unit #404R | 3,200 | 33533543 |
| 373870 | Jun 5, 1990 | Jun 5, 1990 | Union Texas Petroleum Corp. | Andrews | University 3 #4 | 8,100 | 00336605 |
| 373616 | May 23, 1990 | May 23, 1990 | Union Texas Petroleum Corp. | Jim Hogg | Weil #1A | 10,800 | 24731886 |
| 372758 | May 2, 1990 | May 2, 1990 | Union Texas Petroleum Corp. | Ector | Fasken S-13 #1 | 13,153 | 13510639 |
| 371675 | Apr 4, 1990 | Apr 4, 1990 | Union Texas Petroleum Corp. | Andrews | University 3 #5 | 8,050 | 00336709 |
| 371674 | Apr 4, 1990 | Apr 4, 1990 | Union Texas Petroleum Corp. | Winkler | Wheeler, Neste 23 #1 | 12,500 | 49532324 |
| 370818 | Mar 14, 1990 | Mar 14, 1990 | Union Texas Petroleum Corp. | Glasscock | Wild Turkey #1 | 10,750 | 17332119 |
| 369187 | Feb 26, 1990 | Feb 26, 1990 | Union Texas Petroleum Corp. | Cochran | Veal #44 | 5,150 | 07932461 |
| 369188 | Jan 30, 1990 | Jan 30, 1990 | Union Texas Petroleum Corp. | Cochran | Veal #43 | 5,150 | 07932462 |
| 368724 | Jan 24, 1990 | Jan 24, 1990 | Union Texas Petroleum Corp. | Andrews | University 3 #3 | 8,000 | 00336401 |
| 367666 | Dec 21, 1989 | Dec 21, 1989 | Union Texas Petroleum Corp. | Ward | China Lake 205 #1 | 19,800 | 47532213 |
| 366550 | Dec 21, 1989 | Dec 21, 1989 | Union Texas Petroleum Corp. | Martin | Cave, Fred #2 | 9,350 | 31733658 |
| 367144 | Dec 6, 1989 | Dec 6, 1989 | Union Texas Petroleum Corp. | Andrews | Universtiy 3 #4 | 8,100 | 00336605 |
| 367145 | Dec 5, 1989 | Dec 5, 1989 | Union Texas Petroleum Corp. | Jim Hogg | Weil #1 | 10,500 | 24731886 |
| 366551 | Nov 20, 1989 | Nov 20, 1989 | Union Texas Petroleum Corp. | Martin | Deatherage #B 4 | 9,300 | 31733659 |
| 365566 | Nov 3, 1989 | Nov 3, 1989 | Union Texas Petroleum Corp. | Glasscock | Glass #1 | 10,250 | 17331639 |
| 365829 | Nov 1, 1989 | Nov 1, 1989 | Union Texas Petroleum Corp. | Midland | Penrose - Oldham #1 | 12,116 | 32931032 |
| 365454 | Oct 25, 1989 | Oct 25, 1989 | Union Texas Petroleum Corp. | Andrews | University "12" #1 | 12,900 | 00336562 |
| 365454Amendment | Oct 25, 1989 | Oct 25, 1989 | Union Texas Petroleum Corp. | Andrews | University "12" #1 | 12,900 | 00336562 |
| 365439 | Oct 25, 1989 | Oct 25, 1989 | Union Texas Petroleum Corp. | Andrews | Mullins, Neste "18" #1 | 11,200 | 00336561 |
| 363803 | Oct 9, 1989 | Oct 9, 1989 | Union Texas Petroleum Corp. | Ector | Fasken 14 #6 | 13,400 | 13535536 |
| 364497 | Oct 5, 1989 | Oct 5, 1989 | Union Texas Petroleum Corp. | Hockley | Noose "27" #1 | 10,300 | 21935486 |
| 364498 | Oct 2, 1989 | Oct 2, 1989 | Union Texas Petroleum Corp. | Glasscock | Houston "28" #1 | 11,200 | 17332106 |
| 362454 | Sep 5, 1989 | Sep 5, 1989 | Union Texas Petroleum Corp. | Ector | Fasken "19" #1 | 12,450 | 13535522 |
| 361504 | Aug 30, 1989 | Aug 30, 1989 | Union Texas Petroleum Corp. | Mitchell | Wswu 15 #9 | 3,350 | 33533481 |
| 361503 | Aug 30, 1989 | Aug 30, 1989 | Union Texas Petroleum Corp. | Mitchell | Wswu 15 #8 | 3,350 | 33533482 |
| 363157 | Aug 25, 1989 | Aug 25, 1989 | Union Texas Petroleum Corp. | Glasscock | Currie, Neste #3 | 10,250 | 17332100 |
| 362451 | Aug 21, 1989 | Aug 21, 1989 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #1015WI | 3,250 | 33533484 |
| 362782 | Aug 18, 1989 | Aug 18, 1989 | Union Texas Petroleum Corp. | Wheeler | Puryear #1028 | 20,250 | 48330783 |
| 362782Amendment | Aug 18, 1989 | Aug 18, 1989 | Union Texas Petroleum Corp. | Wheeler | Puryear #1028 | 20,250 | 48330783 |
| 362453 | Aug 10, 1989 | Aug 10, 1989 | Union Texas Petroleum Corp. | Martin | Slimline, Neste #1 | 10,700 | 31733616 |
| 362452 | Aug 9, 1989 | Aug 9, 1989 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit #4027 | 3,250 | 33533483 |
| 362231 | Aug 3, 1989 | Aug 3, 1989 | Union Texas Petroleum Corp. | Glasscock | Neste Dogwood #401 | 9,880 | 17332091 |
| 362231Amendment | Aug 3, 1989 | Aug 3, 1989 | Union Texas Petroleum Corp. | Glasscock | Neste Dogwood #401 | 10,400 | 17332091 |
| 360885 | Jul 26, 1989 | Jul 26, 1989 | Union Texas Petroleum Corp. | Glasscock | Nelson, Neste #1 | 11,000 | 17332087 |
| 361772 | Jul 25, 1989 | Jul 25, 1989 | Union Texas Petroleum Corp. | Glasscock | Currie, Neste #2 | 10,200 | 17332090 |
| 361772Amendment | Jul 25, 1989 | Jul 25, 1989 | Union Texas Petroleum Corp. | Glasscock | Currie, Neste #2 | 10,400 | 17332090 |
| 360495 | Jun 26, 1989 | Jun 26, 1989 | Union Texas Petroleum Corp. | Andrews | University 3 #3 | 8,100 | 00336401 |
| 360056 | Jun 16, 1989 | Jun 16, 1989 | Union Texas Petroleum Corp. | Glasscock | Neste TXL #1 | 10,400 | 17332084 |
| 359935 | Jun 5, 1989 | Jun 5, 1989 | Union Texas Petroleum Corp. | Lavaca | Lampley, O. A. #4 | 15,800 | 28532046 |
| 359935Amendment | Jun 5, 1989 | Jun 5, 1989 | Union Texas Petroleum Corp. | Lavaca | Lampley, O. A. #4 | 16,200 | 28532046 |
| 359935Amendment | Jun 5, 1989 | Jun 5, 1989 | Union Texas Petroleum Corp. | Lavaca | Lampley, O. A. #4 | 17,500 | 28532046 |
| 359862 | Jun 2, 1989 | Jun 2, 1989 | Union Texas Petroleum Corp. | Glasscock | Schwartz, Neste #2 | 10,400 | 17332082 |
| 359822 | Jun 1, 1989 | Jun 1, 1989 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas "H" #3 | 9,720 | 24731427 |
| 358862 | May 4, 1989 | May 4, 1989 | Union Texas Petroleum Corp. | Ector | Fasken 14 #6 | 13,400 | 13535536 |
| 358242 | Apr 19, 1989 | Apr 19, 1989 | Union Texas Petroleum Corp. | Glasscock | Bank Book SWD #1 | 8,848 | 17310064 |
| 357978 | Apr 11, 1989 | Apr 11, 1989 | Union Texas Petroleum Corp. | Ector | Fasken 14 #6 | 13,400 | 13535536 |
| 357978Amendment | Apr 11, 1989 | Apr 11, 1989 | Union Texas Petroleum Corp. | Ector | Fasken 14 #6 | 13,400 | 13535536 |
| 355448 | Feb 14, 1989 | Feb 14, 1989 | Union Texas Petroleum Corp. | Andrews | University "3" #1 | 7,700 | 00311048 |
| 355416 | Feb 14, 1989 | Feb 14, 1989 | Union Texas Petroleum Corp. | Andrews | University "3" #2 | 8,240 | 00334802 |
| 355416Amendment | Feb 14, 1989 | Feb 14, 1989 | Union Texas Petroleum Corp. | Andrews | University -3- #2 | 8,240 | 00334802 |
| 355035 | Jan 25, 1989 | Jan 25, 1989 | Union Texas Petroleum Corp. | Ector | Fasken 14 #7 | 13,516 | 13535898 |
| 355447 | Jan 24, 1989 | Jan 24, 1989 | Union Texas Petroleum Corp. | Glasscock | Currie, Neste #1 | 11,200 | 17332068 |
| 354600 | Jan 10, 1989 | Jan 10, 1989 | Union Texas Petroleum Corp. | Howard | Hamilton 6 #1 | 10,689 | 22734379 |
| 354723 | Dec 30, 1988 | Dec 30, 1988 | Union Texas Petroleum Corp. | Ector | Fasken G-45 #3 | 12,969 | 13510864 |
| 354723Amendment | Dec 30, 1988 | Dec 30, 1988 | Union Texas Petroleum Corp. | Ector | Fasken G-45 #3 | 12,969 | 13510864 |
| 354507 | Dec 22, 1988 | Dec 22, 1988 | Union Texas Petroleum Corp. | Midland | Penrose-Oldham #5 | 11,725 | 32931374 |
| 354065 | Dec 9, 1988 | Dec 9, 1988 | Union Texas Petroleum Corp. | Glasscock | Schwartz, Neste #1 | 10,400 | 17332061 |
| 352718 | Oct 26, 1988 | Oct 26, 1988 | Union Texas Petroleum Corp. | Glasscock | Mustang SWD #1 | 5,250 | 17331617 |
| 352646 | Oct 26, 1988 | Oct 26, 1988 | Union Texas Petroleum Corp. | Glasscock | Neste Glass "27" #1 | 10,800 | 17332057 |
| 352126 | Oct 12, 1988 | Oct 12, 1988 | Union Texas Petroleum Corp. | Glasscock | Herzog, Neste "11" #1 | 11,200 | 17332056 |
| 352126Amendment | Oct 12, 1988 | Oct 12, 1988 | Union Texas Petroleum Corp. | Glasscock | Herzog, Neste "11" #1 | 11,200 | 17332056 |
| 350590 | Aug 29, 1988 | Aug 29, 1988 | Union Texas Petroleum Corp. | Andrews | University "2" #1 | 8,000 | 00311037 |
| 350131 | Aug 16, 1988 | Aug 16, 1988 | Union Texas Petroleum Corp. | Howard | Hamilton 6 #1 | 10,800 | 22734379 |
| 350131Amendment | Aug 16, 1988 | Aug 16, 1988 | Union Texas Petroleum Corp. | Howard | Hamilton 6 #1 | 10,660 | 22734379 |
| 349271 | Jul 27, 1988 | Jul 27, 1988 | Union Texas Petroleum Corp. | Hockley | Neste Bevers #1 | 11,500 | 21935327 |
| 347735 | Jun 22, 1988 | Jun 22, 1988 | Union Texas Petroleum Corp. | Ector | Fasken 14 #7 | 13,650 | 13535898 |
| 347395 | Jun 7, 1988 | Jun 7, 1988 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. "H" #16 | 10,100 | 24731818 |
| 347394 | Jun 7, 1988 | Jun 7, 1988 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. "E" #16 | 10,200 | 24731817 |
| 345720 | Apr 27, 1988 | Apr 27, 1988 | Union Texas Petroleum Corp. | Glasscock | Neste Hightower #1 | 8,100 | 17332035 |
| 345091 | Apr 14, 1988 | Apr 14, 1988 | Union Texas Petroleum Corp. | Glasscock | Edwards, Neste #1 | 10,150 | 17332031 |
| 344892 | Apr 8, 1988 | Apr 8, 1988 | Union Texas Petroleum Corp. | Glasscock | Sherrod, Neste Christie #1 | 8,650 | 17332029 |
| 344891 | Apr 8, 1988 | Apr 8, 1988 | Union Texas Petroleum Corp. | Glasscock | Wilson, Neste #1 | 11,350 | 17332030 |
| 344891Amendment | Apr 8, 1988 | Apr 8, 1988 | Union Texas Petroleum Corp. | Glasscock | Wilson, Neste #1 | 11,350 | 17332030 |
| 344855 | Apr 7, 1988 | Apr 7, 1988 | Union Texas Petroleum Corp. | Borden | Neste Coleman Farms #1 | 10,100 | 03331349 |
| 344542 | Apr 1, 1988 | Apr 1, 1988 | Union Texas Petroleum Corp. | Midland | Billington, Page 32 #1 | 9,500 | 32931952 |
| 342891 | Feb 26, 1988 | Feb 26, 1988 | Union Texas Petroleum Corp. | Glasscock | Houston, Neste "14" #2 | 11,200 | 17332024 |
| 356036 | Feb 15, 1988 | Feb 15, 1988 | Union Texas Petroleum Corp. | Ector | Fasken 14 #8 | 13,400 | 13536037 |
| 341897 | Jan 27, 1988 | Jan 27, 1988 | Union Texas Petroleum Corp. | Ector | Fasken 14 #3 | 13,050 | 13504927 |
| 339791 | Dec 21, 1987 | Dec 21, 1987 | Union Texas Petroleum Corp. | Andrews | University -3- #2 | 9,190 | 00334802 |
| 338531 | Dec 10, 1987 | Dec 10, 1987 | Union Texas Petroleum Corp. | Ector | Fasken "S-13" #2 | 10,600 | 13535136 |
| 339899 | Dec 8, 1987 | Dec 8, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. "E" #15 | 9,950 | 24731806 |
| 339898 | Dec 8, 1987 | Dec 8, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. "H" #15 | 9,950 | 24731805 |
| 339898Amendment | Dec 8, 1987 | Dec 8, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. "H" #15 | 10,042 | 24731805 |
| 339087 | Nov 19, 1987 | Nov 19, 1987 | Union Texas Petroleum Corp. | Midland | Page Billington 32 #1 | 12,000 | 32931952 |
| 337603 | Oct 21, 1987 | Oct 21, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestenea Oil & Gas #H 3 | 9,720 | 24731427 |
| 336913 | Oct 7, 1987 | Oct 7, 1987 | Union Texas Petroleum Corp. | Glasscock | Neste Houston "14" #1 | 11,200 | 17332005 |
| 335780 | Sep 14, 1987 | Sep 14, 1987 | Union Texas Petroleum Corp. | Martin | Neste Strain 18 #1 | 11,400 | 31733460 |
| 335453 | Sep 8, 1987 | Sep 8, 1987 | Union Texas Petroleum Corp. | Midland | Penrose-Oldham 34 #1 | 11,850 | 32931166 |
| 332656 | Jul 10, 1987 | Jul 10, 1987 | Union Texas Petroleum Corp. | Duval | Cantu Gas Unit #1 | 10,500 | 13137027 |
| 332154 | Jun 30, 1987 | Jun 30, 1987 | Union Texas Petroleum Corp. | Midland | Slaughter #1 | 12,000 | 32931448 |
| 329422 | Apr 27, 1987 | Apr 27, 1987 | Union Texas Petroleum Corp. | Ector | Fasken 14 #6 | 13,000 | 13535536 |
| 329390 | Apr 23, 1987 | Apr 23, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. E #14 | 10,100 | 24731780 |
| 329101 | Apr 17, 1987 | Apr 17, 1987 | Union Texas Petroleum Corp. | Ector | Fasken "19" #1 | 12,425 | 13535522 |
| 329101Amendment | Apr 17, 1987 | Apr 17, 1987 | Union Texas Petroleum Corp. | Ector | Fasken "19" #1 | 12,400 | 13535522 |
| 328691 | Apr 8, 1987 | Apr 8, 1987 | Union Texas Petroleum Corp. | Glasscock | Glass 15 #1 | 10,700 | 17331975 |