| 328690 | Apr 8, 1987 | Apr 8, 1987 | Union Texas Petroleum Corp. | Pecos | Baldy #1 | 5,100 | 37135939 |
| 328257 | Apr 1, 1987 | Apr 1, 1987 | Union Texas Petroleum Corp. | Andrews | University "2" #3 | 7,050 | 00334144 |
| 328256 | Mar 30, 1987 | Mar 30, 1987 | Union Texas Petroleum Corp. | Andrews | University "2" #5 | 8,120 | 00334424 |
| 328080 | Mar 25, 1987 | Mar 25, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil and Gas H #14 | 10,100 | 24731775 |
| 328080Amendment | Mar 25, 1987 | Mar 25, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. H #14 | 10,100 | 24731775 |
| 328080Amendment | Mar 25, 1987 | Mar 25, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Mestena, Inc. H #14 | 10,100 | 24731775 |
| 327193 | Feb 27, 1987 | Feb 27, 1987 | Union Texas Petroleum Corp. | Terry | Wellman Unit #5011 | 10,000 | 44531457 |
| 327192 | Feb 27, 1987 | Feb 27, 1987 | Union Texas Petroleum Corp. | Terry | Wellman Unit #409 | 10,000 | 44531456 |
| 326827 | Feb 24, 1987 | Feb 24, 1987 | Union Texas Petroleum Corp. | Cochran | Northwest Slaughter Unit #83 | 5,100 | 07932254 |
| 326828 | Feb 23, 1987 | Feb 23, 1987 | Union Texas Petroleum Corp. | Cochran | Northwest Slaughter Unit #49R | 5,060 | 07932253 |
| 326722 | Feb 17, 1987 | Feb 17, 1987 | Union Texas Petroleum Corp. | Brazoria | Summers, E. L. #2 | 11,100 | 03932180 |
| 326722Amendment | Feb 17, 1987 | Feb 17, 1987 | Union Texas Petroleum Corp. | Brazoria | Summers, E. L. #2 | 11,100 | 03932180 |
| 326722Amendment | Feb 17, 1987 | Feb 17, 1987 | Union Texas Petroleum Corp. | Brazoria | Summers, E. L. #2 | 11,100 | 03932180 |
| 326267 | Feb 6, 1987 | Feb 6, 1987 | Union Texas Petroleum Corp. | Jim Hogg | Alicia Ramos Gas Unit #1 | 10,100 | 24731768 |
| 324543 | Dec 18, 1986 | Dec 18, 1986 | Union Texas Petroleum Corp. | Glasscock | TXL 3 #1 | 10,106 | 17331732 |
| 322332 | Nov 19, 1986 | Nov 19, 1986 | Union Texas Petroleum Corp. | Jim Hogg | Jesus Pena Gas Unit #1 | 10,100 | 24731758 |
| 322730 | Nov 6, 1986 | Nov 6, 1986 | Union Texas Petroleum Corp. | Pecos | Bennett #1 | 6,950 | 37135875 |
| 322730Amendment | Nov 6, 1986 | Nov 6, 1986 | Union Texas Petroleum Corp. | Pecos | Bennett #1 | 7,500 | 37135875 |
| 321404 | Oct 7, 1986 | Oct 7, 1986 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas "H" #13 | 6,500 | 24731755 |
| 321155 | Sep 30, 1986 | Sep 30, 1986 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas "E" #13 | 10,100 | 24731751 |
| 301808 | Apr 30, 1986 | Apr 30, 1986 | Union Texas Petroleum Corp. | Terry | Wellman #408 | 10,000 | 44531435 |
| 301804 | Apr 30, 1986 | Apr 30, 1986 | Union Texas Petroleum Corp. | Terry | Wellman Unit #5010 | 10,000 | 44531434 |
| 298950 | Mar 5, 1986 | Mar 5, 1986 | Union Texas Petroleum Corp. | Howard | Guitar Trust #1 | 10,469 | 22733663 |
| 298958 | Mar 4, 1986 | Mar 4, 1986 | Union Texas Petroleum Corp. | Lynn | Riggs #1 | 9,600 | 30530382 |
| 298611 | Feb 27, 1986 | Feb 27, 1986 | Union Texas Petroleum Corp. | Glasscock | Houston "4" #1 | 11,500 | 17331942 |
| 297972 | Feb 17, 1986 | Feb 17, 1986 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas "H" #12 | 10,100 | 24731718 |
| 297659 | Feb 13, 1986 | Feb 13, 1986 | Union Texas Petroleum Corp. | Glasscock | Books 25 #1 | 10,700 | 17331937 |
| 295557 | Jan 10, 1986 | Jan 10, 1986 | Union Texas Petroleum Corp. | Jim Hogg | Pena, Manual #1 | 10,100 | 24731712 |
| 324581 | Dec 19, 1985 | Dec 19, 1985 | Union Texas Petroleum Corp. | Ector | Fasken S-13 #1 | 13,155 | 13510639 |
| 292457 | Dec 6, 1985 | Dec 6, 1985 | Union Texas Petroleum Corp. | Glasscock | Glass #1 | 10,256 | 17331639 |
| 291816 | Dec 5, 1985 | Dec 5, 1985 | Union Texas Petroleum Corp. | Ward | China Lake "206" #1 | 17,500 | 47532412 |
| 291813 | Dec 5, 1985 | Dec 5, 1985 | Union Texas Petroleum Corp. | Ector | Moss #2 | 12,461 | 13501941 |
| 291395 | Nov 27, 1985 | Nov 27, 1985 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit 19 #7 | 3,200 | 33533101 |
| 291147 | Nov 26, 1985 | Nov 26, 1985 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit 19 #J1 | 3,200 | 33533094 |
| 291151 | Nov 26, 1985 | Nov 26, 1985 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit 19 #J2 | 3,200 | 33533096 |
| 291155 | Nov 26, 1985 | Nov 26, 1985 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit 19 #J3 | 3,200 | 33533098 |
| 291149 | Nov 26, 1985 | Nov 26, 1985 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit 19 #J4 | 3,200 | 33533095 |
| 291153 | Nov 26, 1985 | Nov 26, 1985 | Union Texas Petroleum Corp. | Mitchell | Westbrook Southwest Unit 19 #6 | 3,200 | 33533097 |
| 291814 | Nov 26, 1985 | Nov 26, 1985 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas "E" #12 | 10,100 | 24731705 |
| 290857 | Nov 21, 1985 | Nov 21, 1985 | Union Texas Petroleum Corp. | Irion | Sugg "4" #1 | 7,400 | 23530731 |
| 289899 | Nov 13, 1985 | Nov 13, 1985 | Union Texas Petroleum Corp. | Reagan | Cauble 32 #4 | 8,400 | 38333618 |
| 289903 | Nov 13, 1985 | Nov 13, 1985 | Union Texas Petroleum Corp. | Howard | Guitar Trust 29 #1 | 10,600 | 22733909 |
| 289447 | Nov 7, 1985 | Nov 7, 1985 | Union Texas Petroleum Corp. | Ector | Fasken "S-13" #2 | 10,600 | 13535136 |
| 288511 | Oct 25, 1985 | Oct 25, 1985 | Union Texas Petroleum Corp. | Glasscock | Glass #2 | 10,500 | 17331911 |
| 287638 | Oct 14, 1985 | Oct 14, 1985 | Union Texas Petroleum Corp. | Ector | Fasken "20" #2 | 10,600 | 13534730 |
| 282494 | Aug 12, 1985 | Aug 12, 1985 | Union Texas Petroleum Corp. | Ector | Fasken "20" #1 | 10,631 | 13534587 |
| 279501 | Jul 8, 1985 | Jul 8, 1985 | Union Texas Petroleum Corp. | Irion | Sugg "12" #2 | 7,600 | 23532615 |
| 279524 | Jul 8, 1985 | Jul 8, 1985 | Union Texas Petroleum Corp. | Irion | Sugg "6" #2 | 7,600 | 23532616 |
| 279525 | Jul 8, 1985 | Jul 8, 1985 | Union Texas Petroleum Corp. | Irion | Sheen 3061 #2 | 7,600 | 23532617 |
| 279476 | Jul 3, 1985 | Jul 3, 1985 | Union Texas Petroleum Corp. | Irion | Sugg "4" #2 | 7,600 | 23532614 |
| 279057 | Jun 27, 1985 | Jun 27, 1985 | Union Texas Petroleum Corp. | Glasscock | TXL "3" #2 | 10,500 | 17331852 |
| 278016 | Jun 18, 1985 | Jun 18, 1985 | Union Texas Petroleum Corp. | Nacogdoches | McFaddin, R. B. #1 | 9,000 | 34731422 |
| 275999 | May 24, 1985 | May 24, 1985 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas "E" #11 | 11,100 | 24731664 |
| 274624 | May 9, 1985 | May 9, 1985 | Union Texas Petroleum Corp. | Glasscock | TXL "3" #2 | 10,500 | 17331852 |
| 273465 | Apr 25, 1985 | Apr 25, 1985 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas "H" #10 | 11,100 | 24731656 |
| 273290 | Apr 19, 1985 | Apr 19, 1985 | Union Texas Petroleum Corp. | Nacogdoches | Jerry Green Oil Unit #1 | 9,500 | 34731408 |
| 272278 | Apr 15, 1985 | Apr 15, 1985 | Union Texas Petroleum Corp. | Titus | Pewitt, Paul -E- #13 | 5,600 | 44930441 |
| 271551 | Mar 26, 1985 | Mar 26, 1985 | Union Texas Petroleum Corp. | Irion | Sheen "3061" #1 | 8,115 | 23530646 |
| 270251 | Mar 22, 1985 | Mar 22, 1985 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas -E- #10 | 11,000 | 24731653 |
| 269877 | Mar 19, 1985 | Mar 19, 1985 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas -H- #8 | 11,000 | 24731651 |
| 269878 | Mar 19, 1985 | Mar 19, 1985 | Union Texas Petroleum Corp. | Duval | N. H. Perez No. 2 Unit #1 | 11,300 | 13136674 |
| 268374 | Mar 1, 1985 | Mar 1, 1985 | Union Texas Petroleum Corp. | Midland | Kimball "35" #1 | 12,000 | 32931491 |
| 268189 | Mar 1, 1985 | Mar 1, 1985 | Union Texas Petroleum Corp. | Howard | Guitar Trust #1 | 11,500 | 22733663 |
| 268275 | Mar 1, 1985 | Mar 1, 1985 | Union Texas Petroleum Corp. | Irion | Farmar "38" #1 | 7,000 | 23531779 |
| 267783 | Feb 26, 1985 | Feb 26, 1985 | Union Texas Petroleum Corp. | Nolan | Cochran #2 | 7,000 | 35331773 |
| 267698 | Feb 25, 1985 | Feb 25, 1985 | Union Texas Petroleum Corp. | Andrews | University "3" #2 | 9,500 | 00334802 |
| 266839 | Feb 13, 1985 | Feb 13, 1985 | Union Texas Petroleum Corp. | Duval | Southwest Texas Corp. #1 | 11,000 | 13136659 |
| 264778 | Jan 22, 1985 | Jan 22, 1985 | Union Texas Petroleum Corp. | Nolan | Cochran "A" #3 | 7,000 | 35331755 |
| 264698 | Jan 21, 1985 | Jan 21, 1985 | Union Texas Petroleum Corp. | Midland | Penrose Oldham "34" #2 | 12,000 | 32931484 |
| 280230 | Jan 17, 1985 | Jan 17, 1985 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas #H3 | 10,780 | 24731427 |
| 262152 | Dec 21, 1984 | Dec 21, 1984 | Union Texas Petroleum Corp. | Duval | Perez, N. H. #1 | 11,300 | 13136627 |
| 260998 | Dec 12, 1984 | Dec 12, 1984 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas #H2A | 6,500 | 24731629 |
| 260297 | Dec 7, 1984 | Dec 7, 1984 | Union Texas Petroleum Corp. | Ector | Fasken "20" #2 | 11,200 | 13534730 |
| 260293 | Dec 7, 1984 | Dec 7, 1984 | Union Texas Petroleum Corp. | Midland | Slaughter #1 | 12,000 | 32931448 |
| 260295 | Dec 7, 1984 | Dec 7, 1984 | Union Texas Petroleum Corp. | Dawson | Jenkins #2 | 5,400 | 11532153 |
| 259520 | Nov 27, 1984 | Nov 27, 1984 | Union Texas Petroleum Corp. | Nolan | Cochran #1 | 7,000 | 35331726 |
| 258953 | Nov 27, 1984 | Nov 27, 1984 | Union Texas Petroleum Corp. | Ward | University "18-5" #2 | 13,500 | 47533537 |
| 258053 | Nov 16, 1984 | Nov 16, 1984 | Union Texas Petroleum Corp. | Sterling | Glass "26" #2 | 8,700 | 43131565 |
| 257773 | Nov 13, 1984 | Nov 13, 1984 | Union Texas Petroleum Corp. | Dawson | Jenkins #1 | 7,467 | 11531925 |
| 256821 | Nov 6, 1984 | Nov 6, 1984 | Union Texas Petroleum Corp. | Glasscock | TXL "3" #1 | 10,800 | 17331732 |
| 255899 | Oct 29, 1984 | Oct 29, 1984 | Union Texas Petroleum Corp. | Chambers | Shenck B-1 #1 | 10,000 | 07103303 |
| 255569 | Oct 24, 1984 | Oct 24, 1984 | Union Texas Petroleum Corp. | Ector | Fasken Unit "14" #5 | 11,140 | 13504945 |
| 255823 | Oct 22, 1984 | Oct 22, 1984 | Union Texas Petroleum Corp. | Reagan | Cauble "32" #3R | 8,500 | 38333282 |
| 255010 | Oct 17, 1984 | Oct 17, 1984 | Union Texas Petroleum Corp. | Ector | Fasken Unit "14" #3 | 13,049 | 13504927 |
| 254745 | Oct 17, 1984 | Oct 17, 1984 | Union Texas Petroleum Corp. | Lavaca | Lampley, O. A. #3 | 6,500 | 28531751 |
| 253358 | Oct 2, 1984 | Oct 2, 1984 | Union Texas Petroleum Corp. | Victoria | Garrett, W. D. #2 | 6,500 | 46932288 |
| 251837 | Sep 19, 1984 | Sep 19, 1984 | Union Texas Petroleum Corp. | Lavaca | Bohumil Smolka Gas Unit No. 1 #1 | 6,500 | 28531852 |
| 226893 | Sep 9, 1984 | Sep 9, 1984 | Union Texas Petroleum Corp. | Terry | Wellman Unit #805 | 10,000 | 44500422 |
| 248728 | Aug 17, 1984 | Aug 17, 1984 | Union Texas Petroleum Corp. | Howard | Stone #1 | 12,000 | 22733501 |
| 247641 | Aug 8, 1984 | Aug 8, 1984 | Union Texas Petroleum Corp. | Andrews | University "2" #5 | 8,200 | 00334424 |
| 247640 | Aug 8, 1984 | Aug 8, 1984 | Union Texas Petroleum Corp. | Andrews | University "2" #4 | 8,200 | 00334423 |
| 245488 | Jul 19, 1984 | Jul 19, 1984 | Union Texas Petroleum Corp. | Irion | Tucker-Sugg "3071" #1 | 7,295 | 23500561 |
| 245487 | Jul 19, 1984 | Jul 19, 1984 | Union Texas Petroleum Corp. | Irion | Sugg "3072" #1 | 7,979 | 23530623 |
| 245137 | Jul 16, 1984 | Jul 16, 1984 | Union Texas Petroleum Corp. | Jim Hogg | Mestena Oil & Gas #H9 | 10,027 | 24731595 |
| 244165 | Jul 3, 1984 | Jul 3, 1984 | Union Texas Petroleum Corp. | Chambers | James, L. #1 | 9,960 | 07103318 |
| 243217 | Jun 26, 1984 | Jun 26, 1984 | Union Texas Petroleum Corp. | Irion | Sugg "3060" #1 | 7,450 | 23532359 |
| 242305 | Jun 18, 1984 | Jun 18, 1984 | Union Texas Petroleum Corp. | Glasscock | Glass #1 | 10,800 | 17331639 |
| 242279 | Jun 18, 1984 | Jun 18, 1984 | Union Texas Petroleum Corp. | Ector | Fasken "20" #1 | 11,000 | 13534587 |
| 242356 | Jun 18, 1984 | Jun 18, 1984 | Union Texas Petroleum Corp. | Upton | Weir, Willie #2 | 10,414 | 46110295 |
| 242164 | Jun 15, 1984 | Jun 15, 1984 | Union Texas Petroleum Corp. | Irion | Sugg "9" #1 | 7,500 | 23532352 |