| 460912 | May 7, 1997 | May 7, 1997 | Union Pacific Resources Company | Crockett | Mitchell-State, Tom "20C" #5 | 7,700 | 10537657 |
| 461810 | May 6, 1997 | May 6, 1997 | Union Pacific Resources Company | Zapata | Cuellar #3 | 11,500 | 50533600 |
| 461938 | May 5, 1997 | May 5, 1997 | Union Pacific Resources Company | Fayette | Chief Unit #1REH | 12,500 | 14930479 |
| 461809 | May 2, 1997 | May 2, 1997 | Union Pacific Resources Company | Crockett | Hoover, Laura GU "52A" #7 | 8,000 | 10537687 |
| 461808 | May 2, 1997 | May 2, 1997 | Union Pacific Resources Company | Crockett | Hoover, Laura Estate "42D" #7 | 7,500 | 10537688 |
| 461808Amendment | May 2, 1997 | May 2, 1997 | Union Pacific Resources Company | Crockett | Hoover, Laura Estate "42D" #7 | 7,500 | 10537688 |
| 461807 | May 2, 1997 | May 2, 1997 | Union Pacific Resources Company | Crockett | Hoover, Laura Estate "42B" #5 | 7,500 | 10537689 |
| 461806 | May 2, 1997 | May 2, 1997 | Union Pacific Resources Company | Crockett | Hoover, Laura Estate "41D" #6 | 8,000 | 10537690 |
| 461608 | May 2, 1997 | May 2, 1997 | Union Pacific Resources Company | Nueces | Wardner, G. P. #256 | 9,900 | 35533078 |
| 461866 | May 1, 1997 | May 1, 1997 | Union Pacific Resources Company | Zapata | Guerra-Raymond #2 | 10,500 | 50533601 |
| 461865 | May 1, 1997 | May 1, 1997 | Union Pacific Resources Company | Burleson | Remington Unit #1H | 7,200 | 05133557 |
| 461865Amendment | May 1, 1997 | May 1, 1997 | Union Pacific Resources Company | Burleson | Remington Unit #1H | 7,200 | 05133557 |
| 460664 | May 1, 1997 | May 1, 1997 | Union Pacific Resources Company | Crockett | Clegg, Eloise #6103 | 7,200 | 10537643 |
| 461405 | Apr 30, 1997 | Apr 30, 1997 | Union Pacific Resources Company | Crockett | Millspaugh, Austin "2B" #6 | 7,500 | 10537675 |
| 461660 | Apr 29, 1997 | Apr 29, 1997 | Union Pacific Resources Company | Crockett | Montgomery, C.C. "12C" #5 | 7,000 | 10537680 |
| 461406 | Apr 28, 1997 | Apr 28, 1997 | Union Pacific Resources Company | Crockett | Montgomery, C. C. "12C" #6 | 7,000 | 10537676 |
| 461408 | Apr 25, 1997 | Apr 25, 1997 | Union Pacific Resources Company | Crockett | Bean '26' #11HH | 10,000 | 10537679 |
| 461408Amendment | Apr 25, 1997 | Apr 25, 1997 | Union Pacific Resources Company | Crockett | Bean '26' #11HH | 11,551 | 10537679 |
| 461199 | Apr 25, 1997 | Apr 25, 1997 | Union Pacific Resources Company | Victoria | McFaddin A #27 | 2,200 | 46932643 |
| 461199Amendment | Apr 25, 1997 | Apr 25, 1997 | Union Pacific Resources Company | Victoria | McFaddin A #27 | 2,200 | 46932643 |
| 461197 | Apr 25, 1997 | Apr 25, 1997 | Union Pacific Resources Company | Victoria | McFaddin A #24 | 3,200 | 46932358 |
| 461468 | Apr 24, 1997 | Apr 24, 1997 | Union Pacific Resources Company | Dimmit | Fitzsimmons #3 | 4,400 | 12733111 |
| 461467 | Apr 24, 1997 | Apr 24, 1997 | Union Pacific Resources Company | Dimmit | Fitzsimmons #1 | 4,400 | 12733110 |
| 461311 | Apr 24, 1997 | Apr 24, 1997 | Union Pacific Resources Company | Brazos | Grant #H 1H | 8,900 | 04131900 |
| 461310 | Apr 24, 1997 | Apr 24, 1997 | Union Pacific Resources Company | Lee | Cleopatra Unit #1REH | 8,900 | 28730524 |
| 461282 | Apr 23, 1997 | Apr 23, 1997 | Union Pacific Resources Company | Panola | Cgu 7 #6C | 9,860 | 36532800 |
| 461198 | Apr 23, 1997 | Apr 23, 1997 | Union Pacific Resources Company | Victoria | McFaddin A #21 | 2,200 | 46932113 |
| 461475 | Apr 22, 1997 | Apr 22, 1997 | Union Pacific Resources Company | Jasper | Martindale-McGraw Unit A-33 #1H | 12,100 | 24130637 |
| 461219 | Apr 22, 1997 | Apr 22, 1997 | Union Pacific Resources Company | Milam | Cartwright-Moore Unit #1H | 7,100 | 33133479 |
| 461219Amendment | Apr 22, 1997 | Apr 22, 1997 | Union Pacific Resources Company | Milam | Cartwright-Moore Unit #1H | 7,100 | 33133479 |
| 460456 | Apr 22, 1997 | Apr 22, 1997 | Union Pacific Resources Company | Crockett | Couch Estate #5HRH | 10,000 | 10537628 |
| 460456Amendment | Apr 22, 1997 | Apr 22, 1997 | Union Pacific Resources Company | Crockett | Couch Estate #5HRH | 10,000 | 10537628 |
| 460456Amendment | Apr 22, 1997 | Apr 22, 1997 | Union Pacific Resources Company | Crockett | Couch Estate #5HRH | 8,770 | 10537628 |
| 460376 | Apr 22, 1997 | Apr 22, 1997 | Union Pacific Resources Company | Panola | J. F. Hancock Unit #6C | 9,450 | 36532744 |
| 461358 | Apr 18, 1997 | Apr 18, 1997 | Union Pacific Resources Company | Robertson | Strohs Unit #1H | 7,400 | 39530503 |
| 461196 | Apr 16, 1997 | Apr 16, 1997 | Union Pacific Resources Company | Webb | Dcrc Section 101F #6 | 4,322 | 47936332 |
| 459271 | Apr 16, 1997 | Apr 16, 1997 | Union Pacific Resources Company | Fayette | Cochise Unit #1H | 12,600 | 14933040 |
| 459271Amendment | Apr 16, 1997 | Apr 16, 1997 | Union Pacific Resources Company | Fayette | Cochise Unit #1H | 12,600 | 14933040 |
| 459271Amendment | Apr 16, 1997 | Apr 16, 1997 | Union Pacific Resources Company | Fayette | Cochise Unit #1H | 12,600 | 14933040 |
| 459271Amendment | Apr 16, 1997 | Apr 16, 1997 | Union Pacific Resources Company | Fayette | Cochise Unit #1H | 12,600 | 14933040 |
| 461051 | Apr 15, 1997 | Apr 15, 1997 | Union Pacific Resources Company | Brazos | A&m Easterwood #4H | 19,300 | 04131899 |
| 459848 | Apr 15, 1997 | Apr 15, 1997 | Union Pacific Resources Company | Crockett | McMullan "D" #6 | 10,000 | 10537615 |
| 459629 | Apr 15, 1997 | Apr 15, 1997 | Union Pacific Resources Company | Crockett | Scheuber #7 | 8,700 | 10537612 |
| 459629Amendment | Apr 15, 1997 | Apr 15, 1997 | Union Pacific Resources Company | Crockett | Scheuber #7 | 8,400 | 10537612 |
| 459581 | Apr 15, 1997 | Apr 15, 1997 | Union Pacific Resources Company | Crockett | Davidson "A" #8 | 8,600 | 10537603 |
| 459576 | Apr 15, 1997 | Apr 15, 1997 | Union Pacific Resources Company | Crockett | Meybin "A" #5 | 8,700 | 10537601 |
| 459576Amendment | Apr 15, 1997 | Apr 15, 1997 | Union Pacific Resources Company | Crockett | Meybin "A" #5 | 8,700 | 10537601 |
| 461010 | Apr 11, 1997 | Apr 11, 1997 | Union Pacific Resources Company | Crockett | Henderson "20" #3HH | 10,000 | 10537658 |
| 461010Amendment | Apr 11, 1997 | Apr 11, 1997 | Union Pacific Resources Company | Crockett | Henderson "20" #3HH | 10,000 | 10537658 |
| 459849 | Apr 11, 1997 | Apr 11, 1997 | Union Pacific Resources Company | Crockett | Moody Minerals "11D" #6 | 7,500 | 10537616 |
| 460666 | Apr 10, 1997 | Apr 10, 1997 | Union Pacific Resources Company | Nueces | Wardner, G. P. #255 | 7,900 | 35533074 |
| 460737 | Apr 8, 1997 | Apr 8, 1997 | Union Pacific Resources Company | Crockett | Hoover Estate #1510A | 7,800 | 10537648 |
| 460736 | Apr 8, 1997 | Apr 8, 1997 | Union Pacific Resources Company | Crockett | Hoover Estate #609D | 7,800 | 10537647 |
| 460734 | Apr 8, 1997 | Apr 8, 1997 | Union Pacific Resources Company | Crockett | Hoover Estate #610D | 8,000 | 10537646 |
| 460733 | Apr 8, 1997 | Apr 8, 1997 | Union Pacific Resources Company | Crockett | Hoover Estate #1511B | 7,800 | 10537645 |
| 460731 | Apr 8, 1997 | Apr 8, 1997 | Union Pacific Resources Company | Crockett | Hoover, Laura GU "52A" #6 | 8,000 | 10537649 |
| 459635 | Apr 8, 1997 | Apr 8, 1997 | Union Pacific Resources Company | Crockett | Henderson #5 | 7,000 | 10537607 |
| 460738 | Apr 7, 1997 | Apr 7, 1997 | Union Pacific Resources Company | Crockett | Montgomery, C. C. "6B" #2 | 7,000 | 10537644 |
| 460553 | Apr 4, 1997 | Apr 4, 1997 | Union Pacific Resources Company | Crockett | Childress, Crystelle "4D" #4 | 7,200 | 10537636 |
| 460551 | Apr 4, 1997 | Apr 4, 1997 | Union Pacific Resources Company | Crockett | Childress, Crystelle "7A" #6 | 7,200 | 10537631 |
| 460550 | Apr 4, 1997 | Apr 4, 1997 | Union Pacific Resources Company | Crockett | Montgomery, C. C. "6D" #7 | 7,000 | 10537632 |
| 459632 | Apr 4, 1997 | Apr 4, 1997 | Union Pacific Resources Company | Crockett | Henderson #4 | 7,000 | 10537606 |
| 459630 | Apr 4, 1997 | Apr 4, 1997 | Union Pacific Resources Company | Crockett | Henderson #3 | 7,000 | 10537611 |
| 458521 | Apr 4, 1997 | Apr 4, 1997 | Union Pacific Resources Company | Crockett | Childress, Crystelle "8" #7 | 7,600 | 10537580 |
| 460549 | Apr 3, 1997 | Apr 3, 1997 | Union Pacific Resources Company | Crockett | Montgomery, C. C. "8A" #5 | 7,000 | 10537633 |
| 460548 | Apr 3, 1997 | Apr 3, 1997 | Union Pacific Resources Company | Crockett | Montgomery, C. C. "8A" #4 | 7,000 | 10537634 |
| 460552 | Apr 2, 1997 | Apr 2, 1997 | Union Pacific Resources Company | Crockett | Childress, C. "28B" #8 | 7,200 | 10537637 |
| 460490 | Apr 2, 1997 | Apr 2, 1997 | Union Pacific Resources Company | Dimmit | West #2 | 4,000 | 12733106 |
| 460489 | Apr 2, 1997 | Apr 2, 1997 | Union Pacific Resources Company | Dimmit | West #3 | 4,000 | 12733107 |
| 459575 | Apr 1, 1997 | Apr 1, 1997 | Union Pacific Resources Company | Crockett | Meybin "4" #13 | 10,000 | 10537602 |
| 459573 | Apr 1, 1997 | Apr 1, 1997 | Union Pacific Resources Company | Crockett | Meybin "C" #3406 | 8,700 | 10537600 |
| 459570 | Apr 1, 1997 | Apr 1, 1997 | Union Pacific Resources Company | Crockett | Meybin "C" #3407 | 8,700 | 10537604 |
| 459570Amendment | Apr 1, 1997 | Apr 1, 1997 | Union Pacific Resources Company | Crockett | Meybin "C" #3407 | 8,700 | 10537604 |
| 459323 | Apr 1, 1997 | Apr 1, 1997 | Union Pacific Resources Company | Crockett | Perry GU "21" #12 | 8,900 | 10537686 |
| 460455 | Mar 27, 1997 | Mar 27, 1997 | Union Pacific Resources Company | Fayette | Lehmann-Schkade Unit #1RE | 13,000 | 14932560 |
| 460455Amendment | Mar 27, 1997 | Mar 27, 1997 | Union Pacific Resources Company | Fayette | Lehmann-Schkade Unit #1 | 13,000 | 14932560 |
| 460454 | Mar 27, 1997 | Mar 27, 1997 | Union Pacific Resources Company | Fayette | Warda-Mitschke Unit #1RE | 13,000 | 14932455 |
| 460165 | Mar 27, 1997 | Mar 27, 1997 | Union Pacific Resources Company | Zapata | Guerra-JTS #1 | 13,500 | 50533427 |
| 460295 | Mar 26, 1997 | Mar 26, 1997 | Union Pacific Resources Company | Panola | Cgu 7 #8 | 10,000 | 36533643 |
| 460293 | Mar 26, 1997 | Mar 26, 1997 | Union Pacific Resources Company | Panola | Cgu 8 #9 | 10,000 | 36533642 |
| 460212 | Mar 26, 1997 | Mar 26, 1997 | Union Pacific Resources Company | Robertson | Scamardo Unit #1H | 8,900 | 39530498 |
| 460294 | Mar 25, 1997 | Mar 25, 1997 | Union Pacific Resources Company | Kleberg | Wardner, G. P. #254 | 8,000 | 27332246 |
| 459847 | Mar 24, 1997 | Mar 24, 1997 | Union Pacific Resources Company | Fayette | Brangus Unit #1REH | 11,600 | 14932238 |
| 458907 | Mar 21, 1997 | Mar 21, 1997 | Union Pacific Resources Company | Crockett | Montgomery, C. C. "10S" #11 | 7,400 | 10537587 |
| 458718 | Mar 21, 1997 | Mar 21, 1997 | Union Pacific Resources Company | Crockett | Childress, Crystelle "8" #8 | 7,600 | 10537586 |
| 460134 | Mar 20, 1997 | Mar 20, 1997 | Union Pacific Resources Company | Fayette | Schkade-Paseur Unit #1RE | 13,000 | 14932507 |
| 460095 | Mar 19, 1997 | Mar 19, 1997 | Union Pacific Resources Company | Jasper | Arco Fee Unit A-989 #1H | 11,750 | 24130636 |
| 460095Amendment | Mar 19, 1997 | Mar 19, 1997 | Union Pacific Resources Company | Jasper | Arco Fee Unit A-989 #1H | 11,750 | 24130636 |
| 460039 | Mar 18, 1997 | Mar 18, 1997 | Union Pacific Resources Company | Washington | Lauter Unit #1H | 15,100 | 47730844 |
| 458526 | Mar 18, 1997 | Mar 18, 1997 | Union Pacific Resources Company | Crockett | McMullan "D" #5 | 8,900 | 10537575 |
| 459854 | Mar 17, 1997 | Mar 17, 1997 | Union Pacific Resources Company | Crockett | Childress, Crystelle "28B" #7 | 7,300 | 10537620 |
| 459852 | Mar 17, 1997 | Mar 17, 1997 | Union Pacific Resources Company | Crockett | Moody Minerals "23B" #5 | 7,500 | 10537618 |
| 459853 | Mar 14, 1997 | Mar 14, 1997 | Union Pacific Resources Company | Crockett | Childress, Crystelle "102A" #3 | 7,300 | 10537619 |
| 459700 | Mar 14, 1997 | Mar 14, 1997 | Union Pacific Resources Company | Crockett | Couch 29-22 #1HH | 10,000 | 10537613 |
| 459700Amendment | Mar 14, 1997 | Mar 14, 1997 | Union Pacific Resources Company | Crockett | Couch 29-22 #1HH | 11,836 | 10537613 |
| 459864 | Mar 13, 1997 | Mar 13, 1997 | Union Pacific Resources Company | Fayette | Oldenburg Unit #1RE | 12,300 | 14932662 |
| 459864Amendment | Mar 13, 1997 | Mar 13, 1997 | Union Pacific Resources Company | Fayette | Oldenburg Unit #1REH | 13,910 | 14932662 |
| 459701 | Mar 13, 1997 | Mar 13, 1997 | Union Pacific Resources Company | Crockett | McMullan #7HH | 10,000 | 10537614 |
| 459701Amendment | Mar 13, 1997 | Mar 13, 1997 | Union Pacific Resources Company | Crockett | McMullan #7HH | 10,000 | 10537614 |
| 459639 | Mar 13, 1997 | Mar 13, 1997 | Union Pacific Resources Company | Crockett | Henderson #2 | 7,000 | 10537610 |