| 480637Amendment | Nov 5, 1998 | Nov 5, 1998 | Union Pacific Resources Company | Austin | Rains Trust Unit #1H | 16,000 | 01530721 |
| 480637Amendment | Nov 5, 1998 | Nov 5, 1998 | Union Pacific Resources Company | Austin | Rains Trust Unit #1H | 16,000 | 01530721 |
| 480413 | Oct 28, 1998 | Oct 28, 1998 | Union Pacific Resources Company | Washington | Wehmeyer Unit #1H | 15,500 | 47730872 |
| 480412 | Oct 28, 1998 | Oct 28, 1998 | Union Pacific Resources Company | Robertson | Whitetail Unit #1H | 7,500 | 39530538 |
| 480053 | Oct 20, 1998 | Oct 20, 1998 | Union Pacific Resources Company | Jasper | Donner-Brown Unit A-1007 #1H | 15,500 | 24130655 |
| 479760 | Oct 5, 1998 | Oct 5, 1998 | Union Pacific Resources Company | Jasper | Vastar Fee a-234 Unit #1H | 12,000 | 24130654 |
| 479641 | Sep 25, 1998 | Sep 25, 1998 | Union Pacific Resources Company | Goliad | Schrade Unit #1 | 2,900 | 17533001 |
| 479630 | Sep 22, 1998 | Sep 22, 1998 | Union Pacific Resources Company | Panola | Cgu 22 #9 | 9,900 | 36533121 |
| 479621 | Sep 22, 1998 | Sep 22, 1998 | Union Pacific Resources Company | Robertson | Kudu Unit #1H | 8,000 | 39530574 |
| 479084 | Sep 18, 1998 | Sep 18, 1998 | Union Pacific Resources Company | Fayette | Paula Unit No. 1 #1H | 15,000 | 14931768 |
| 479295 | Sep 10, 1998 | Sep 10, 1998 | Union Pacific Resources Company | Panola | Cgu 5 #8 | 10,300 | 36534039 |
| 479215 | Sep 10, 1998 | Sep 10, 1998 | Union Pacific Resources Company | Panola | E. T. Rogers Gas Unit #7 | 10,300 | 36534036 |
| 479216 | Sep 8, 1998 | Sep 8, 1998 | Union Pacific Resources Company | Panola | E. T. Rogers Gas Unit #8 | 10,300 | 36534035 |
| 479216Amendment | Sep 8, 1998 | Sep 8, 1998 | Union Pacific Resources Company | Panola | E. T. Rogers Gas Unit #8 | 10,300 | 36534035 |
| 479276 | Sep 4, 1998 | Sep 4, 1998 | Union Pacific Resources Company | Washington | Seidel Unit #1H | 15,500 | 47730859 |
| 479209 | Sep 2, 1998 | Sep 2, 1998 | Union Pacific Resources Company | Lee | Dees Unit #1 | 13,000 | 28732369 |
| 478961 | Aug 31, 1998 | Aug 31, 1998 | Union Pacific Resources Company | Ector | Madison #1 | 13,100 | 13537732 |
| 478025 | Aug 20, 1998 | Aug 20, 1998 | Union Pacific Resources Company | Gregg | Alford Jones Gas Unit #7 | 10,300 | 18331328 |
| 477993 | Aug 20, 1998 | Aug 20, 1998 | Union Pacific Resources Company | Rusk | Ballow Gas Unit #6 | 11,800 | 40132885 |
| 478234 | Jul 24, 1998 | Jul 24, 1998 | Union Pacific Resources Company | Washington | Jaster Unit #1H | 15,500 | 47730869 |
| 477996 | Jul 21, 1998 | Jul 21, 1998 | Union Pacific Resources Company | Burleson | Zgabay, Edwin C #1REH | 8,500 | 05131678 |
| 477991 | Jul 17, 1998 | Jul 17, 1998 | Union Pacific Resources Company | Panola | Frost-Gillaspy #4 | 10,300 | 36534010 |
| 477990 | Jul 17, 1998 | Jul 17, 1998 | Union Pacific Resources Company | Panola | Hill Lake Unit #4 | 10,300 | 36535417 |
| 476966 | Jul 17, 1998 | Jul 17, 1998 | Union Pacific Resources Company | Crockett | Couch "29" #10 | 7,400 | 10538151 |
| 476962 | Jul 17, 1998 | Jul 17, 1998 | Union Pacific Resources Company | Crockett | Montgomery, C. C. "10" #14 | 6,900 | 10538154 |
| 476703 | Jul 17, 1998 | Jul 17, 1998 | Union Pacific Resources Company | Panola | Frost Unit 4 #4 | 10,300 | 36533970 |
| 478002 | Jul 16, 1998 | Jul 16, 1998 | Union Pacific Resources Company | Austin | Eller Unit #1H | 16,500 | 01530716 |
| 478002Amendment | Jul 16, 1998 | Jul 16, 1998 | Union Pacific Resources Company | Austin | Eller Unit #1H | 16,500 | 01530716 |
| 477849 | Jul 16, 1998 | Jul 16, 1998 | Union Pacific Resources Company | Rusk | High Estate Gas Unit #7 | 11,800 | 40132883 |
| 477840 | Jul 16, 1998 | Jul 16, 1998 | Union Pacific Resources Company | Panola | Boren Unit 1 #6 | 10,300 | 36534004 |
| 477835 | Jul 16, 1998 | Jul 16, 1998 | Union Pacific Resources Company | Panola | Borders-Smith Unit 3 #5 | 10,300 | 36534003 |
| 477769 | Jul 16, 1998 | Jul 16, 1998 | Union Pacific Resources Company | Rusk | J. O. Todd Gas Unit #2 | 7,800 | 40130917 |
| 476264 | Jul 15, 1998 | Jul 15, 1998 | Union Pacific Resources Company | Panola | South Gary Gas Unit 1 #8 | 10,300 | 36533958 |
| 476952 | Jul 10, 1998 | Jul 10, 1998 | Union Pacific Resources Company | Crockett | Couch "30" #12 | 7,500 | 10538150 |
| 475877 | Jul 8, 1998 | Jul 8, 1998 | Union Pacific Resources Company | Rusk | Alford "a" Gas Unit #5 | 11,800 | 40132865 |
| 477635 | Jul 7, 1998 | Jul 7, 1998 | Union Pacific Resources Company | Brazos | Oliver F. Goen Unit #1H | 11,500 | 04131653 |
| 477495 | Jul 2, 1998 | Jul 2, 1998 | Union Pacific Resources Company | Fayette | Harris Unit #1H | 15,000 | 14933086 |
| 476900 | Jul 1, 1998 | Jul 1, 1998 | Union Pacific Resources Company | Crockett | Couch "21" #12 | 7,500 | 10538149 |
| 476899 | Jul 1, 1998 | Jul 1, 1998 | Union Pacific Resources Company | Crockett | Couch "21" #11 | 7,500 | 10538148 |
| 476898 | Jul 1, 1998 | Jul 1, 1998 | Union Pacific Resources Company | Crockett | Couch "21" #10 | 7,500 | 10538146 |
| 476897 | Jul 1, 1998 | Jul 1, 1998 | Union Pacific Resources Company | Crockett | Couch "21" #9 | 7,500 | 10538147 |
| 477362 | Jun 29, 1998 | Jun 29, 1998 | Union Pacific Resources Company | Jasper | Ellis Unit A-521 #1H | 18,500 | 24130653 |
| 477362Amendment | Jun 29, 1998 | Jun 29, 1998 | Union Pacific Resources Company | Jasper | Ellis Unit A-521 #1H | 18,500 | 24130653 |
| 477362Amendment | Jun 29, 1998 | Jun 29, 1998 | Union Pacific Resources Company | Jasper | Ellis Unit A-521 #1H | 12,065 | 24130653 |
| 477285 | Jun 29, 1998 | Jun 29, 1998 | Union Pacific Resources Company | Burleson | Last Chance #1H | 18,600 | 05133568 |
| 477460 | Jun 26, 1998 | Jun 26, 1998 | Union Pacific Resources Company | Fayette | Guenther-Amarado Unit #1H | 13,000 | 14932658 |
| 476961 | Jun 18, 1998 | Jun 18, 1998 | Union Pacific Resources Company | Crockett | Montgomery, C.C. "10S" #13 | 6,900 | 10538153 |
| 476959 | Jun 18, 1998 | Jun 18, 1998 | Union Pacific Resources Company | Crockett | Montgomery, C.C. "5B" #9 | 7,300 | 10538152 |
| 477193 | Jun 16, 1998 | Jun 16, 1998 | Union Pacific Resources Company | Austin | Calvin Boecker Unit #1H | 16,000 | 01530712 |
| 477193Amendment | Jun 16, 1998 | Jun 16, 1998 | Union Pacific Resources Company | Austin | Calvin Boecker Unit #1H | 16,000 | 01530712 |
| 477081 | Jun 15, 1998 | Jun 15, 1998 | Union Pacific Resources Company | Crockett | Couch "30" #11 | 7,500 | 10538155 |
| 476833 | Jun 12, 1998 | Jun 12, 1998 | Union Pacific Resources Company | Crockett | Couch "10" #9 | 7,500 | 10538145 |
| 476704 | Jun 9, 1998 | Jun 9, 1998 | Union Pacific Resources Company | Panola | Frost Unit 4 #5 | 10,300 | 36533971 |
| 476795 | Jun 8, 1998 | Jun 8, 1998 | Union Pacific Resources Company | Panola | Frost Lumber Co. (Sprr) Unit 1 #10 | 10,300 | 36533972 |
| 476785 | Jun 2, 1998 | Jun 2, 1998 | Union Pacific Resources Company | Goliad | Dreier #1 | 11,700 | 17533007 |
| 475759 | Jun 2, 1998 | Jun 2, 1998 | Union Pacific Resources Company | Panola | Cgu 16 #10 | 10,300 | 36533947 |
| 476229 | May 27, 1998 | May 27, 1998 | Union Pacific Resources Company | Fayette | Ramsey-Lyons #1H | 12,000 | 14933084 |
| 475507 | May 20, 1998 | May 20, 1998 | Union Pacific Resources Company | Rusk | Kangerga Gas Unit #6 | 11,800 | 40132860 |
| 476419 | May 19, 1998 | May 19, 1998 | Union Pacific Resources Company | Robertson | Pronghorn Unit #1H | 8,000 | 39530565 |
| 476419Amendment | May 19, 1998 | May 19, 1998 | Union Pacific Resources Company | Robertson | Pronghorn Unit #1H | 8,000 | 39530565 |
| 476248 | May 19, 1998 | May 19, 1998 | Union Pacific Resources Company | Panola | Cgu 13 #5 | 6,600 | 36531884 |
| 476346 | May 18, 1998 | May 18, 1998 | Union Pacific Resources Company | Crockett | Childress, Crystelle "5" #2 | 8,000 | 10538139 |
| 476345 | May 18, 1998 | May 18, 1998 | Union Pacific Resources Company | Crockett | Childress, Crystelle "28C" #04 | 7,400 | 10538138 |
| 476302 | May 15, 1998 | May 15, 1998 | Union Pacific Resources Company | Goliad | Reutter-Dohmann Unit #3 | 11,700 | 17533089 |
| 476119 | May 13, 1998 | May 13, 1998 | Union Pacific Resources Company | Lee | Lillie Unit #1H | 9,000 | 28731224 |
| 476072 | May 13, 1998 | May 13, 1998 | Union Pacific Resources Company | Panola | Cgu 15 #8C | 9,750 | 36532652 |
| 476117 | May 11, 1998 | May 11, 1998 | Union Pacific Resources Company | Rusk | Alford -a- Gas Unit #1 | 10,850 | 40130817 |
| 476120 | May 8, 1998 | May 8, 1998 | Union Pacific Resources Company | Crockett | Couch 30 #3HH | 10,000 | 10538135 |
| 475992 | May 5, 1998 | May 5, 1998 | Union Pacific Resources Company | Washington | Murski Unit #1H | 15,750 | 47730863 |
| 475991 | May 5, 1998 | May 5, 1998 | Union Pacific Resources Company | Lee | Ozias Unit #1H | 8,900 | 28731086 |
| 475827 | Apr 30, 1998 | Apr 30, 1998 | Union Pacific Resources Company | Crockett | Union Pacific #88HH | 10,000 | 10538131 |
| 475745 | Apr 30, 1998 | Apr 30, 1998 | Union Pacific Resources Company | Washington | Tooker Unit #1H | 16,500 | 47730862 |
| 475598 | Apr 29, 1998 | Apr 29, 1998 | Union Pacific Resources Company | Panola | Dahlia O. Caudle Unit #7 | 10,000 | 36533943 |
| 475389 | Apr 24, 1998 | Apr 24, 1998 | Union Pacific Resources Company | Panola | Frost, H. B. Unit #2 | 10,300 | 36533939 |
| 475448 | Apr 23, 1998 | Apr 23, 1998 | Union Pacific Resources Company | Rusk | T. P. Cannon Gas Unit #2 | 11,800 | 40132859 |
| 475521 | Apr 22, 1998 | Apr 22, 1998 | Union Pacific Resources Company | Zapata | Bravo, J. E. #4 | 10,700 | 50533796 |
| 475337 | Apr 15, 1998 | Apr 15, 1998 | Union Pacific Resources Company | Nueces | Wardner, G. P. #262 | 10,000 | 35533118 |
| 475336 | Apr 15, 1998 | Apr 15, 1998 | Union Pacific Resources Company | Lee | Lenoise Unit #1H | 10,000 | 28731192 |
| 475335 | Apr 15, 1998 | Apr 15, 1998 | Union Pacific Resources Company | Brazos | J. E. Weedon Unit #2REH | 13,200 | 04131508 |
| 474898 | Apr 14, 1998 | Apr 14, 1998 | Union Pacific Resources Company | Newton | Texaco Ami Unit 4 #1H | 10,500 | 35130688 |
| 475203 | Apr 10, 1998 | Apr 10, 1998 | Union Pacific Resources Company | Robertson | Gopher Unit #1H | 7,600 | 39530534 |
| 475202 | Apr 10, 1998 | Apr 10, 1998 | Union Pacific Resources Company | Robertson | Loria, Josephine Unit #1H | 7,600 | 39530533 |
| 475200 | Apr 10, 1998 | Apr 10, 1998 | Union Pacific Resources Company | Panola | Sylvan Harris Gas Unit #1 | 10,500 | 36533926 |
| 475128 | Apr 10, 1998 | Apr 10, 1998 | Union Pacific Resources Company | Crockett | Perner Ranch #3302 | 10,500 | 10538120 |
| 474991 | Apr 10, 1998 | Apr 10, 1998 | Union Pacific Resources Company | Panola | Cgu 20 #9C | 10,100 | 36532883 |
| 474991Amendment | Apr 10, 1998 | Apr 10, 1998 | Union Pacific Resources Company | Panola | Cgu 20 #9C | 10,100 | 36532883 |
| 474988 | Apr 10, 1998 | Apr 10, 1998 | Union Pacific Resources Company | Crockett | Union Pacific State Unit #4 | 7,300 | 10538116 |
| 475139 | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Crockett | Riggs "19" #1 | 10,000 | 10538118 |
| 475139Amendment | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Crockett | Riggs "19" #1 | 10,000 | 10538118 |
| 475138 | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Crockett | Riggs "20" #3 | 10,000 | 10538117 |
| 475137 | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Crockett | Union Pacific State Unit #7 | 7,300 | 10538119 |
| 475136 | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Nueces | Bertram Heirs #1 | 1,000 | 35531413 |
| 475135 | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Lee | Tuna Unit #1 | 11,000 | 28732500 |
| 474990 | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Crockett | Hunt State #1 | 7,300 | 10538114 |
| 474989 | Apr 8, 1998 | Apr 8, 1998 | Union Pacific Resources Company | Crockett | Union Pacific State Unit #5 | 7,300 | 10538115 |
| 474987 | Apr 6, 1998 | Apr 6, 1998 | Union Pacific Resources Company | Austin | Schulz Unit #1H | 16,000 | 01530710 |
| 474995 | Apr 3, 1998 | Apr 3, 1998 | Union Pacific Resources Company | Milam | Bundick-Wells Unit #1H | 6,500 | 33133507 |
| 474899 | Apr 3, 1998 | Apr 3, 1998 | Union Pacific Resources Company | Burleson | J. D. Autrey Unit #1REH | 13,000 | 05133063 |
| 474858 | Apr 3, 1998 | Apr 3, 1998 | Union Pacific Resources Company | Panola | Dahlia O. Caudle Unit 1 #3 | 9,700 | 36532212 |
| 474949 | Apr 2, 1998 | Apr 2, 1998 | Union Pacific Resources Company | Crockett | Couch 30 #2HH | 10,000 | 10538113 |