| 474932 | Apr 2, 1998 | Apr 2, 1998 | Union Pacific Resources Company | Newton | Texaco Fee Ami #1REH | 15,800 | 35130531 |
| 474233 | Apr 2, 1998 | Apr 2, 1998 | Union Pacific Resources Company | Nueces | Wardner, G P #261 | 10,000 | 35533114 |
| 474905 | Apr 1, 1998 | Apr 1, 1998 | Union Pacific Resources Company | Crockett | Union Pacific State Unit #6 | 7,300 | 10538112 |
| 474747 | Apr 1, 1998 | Apr 1, 1998 | Union Pacific Resources Company | Crockett | Pierce, J. S. "4D" #12 | 7,300 | 10538106 |
| 474745 | Apr 1, 1998 | Apr 1, 1998 | Union Pacific Resources Company | Crockett | Pierce, J. S. "4D" #13 | 7,300 | 10538107 |
| 474744 | Apr 1, 1998 | Apr 1, 1998 | Union Pacific Resources Company | Crockett | Pierce, J. S. "4B" #10 | 7,300 | 10538108 |
| 474815 | Mar 30, 1998 | Mar 30, 1998 | Union Pacific Resources Company | Burleson | Colt Unit #1H | 7,000 | 05133572 |
| 474743 | Mar 30, 1998 | Mar 30, 1998 | Union Pacific Resources Company | Crockett | Pierce, J. S. "4C" #11 | 7,300 | 10538109 |
| 474742 | Mar 30, 1998 | Mar 30, 1998 | Union Pacific Resources Company | Crockett | Pierce, J. S. "4B" #9 | 7,300 | 10538110 |
| 474732 | Mar 27, 1998 | Mar 27, 1998 | Union Pacific Resources Company | Washington | Hahn Unit #1H | 16,500 | 47730861 |
| 474732Amendment | Mar 27, 1998 | Mar 27, 1998 | Union Pacific Resources Company | Washington | Hahn Unit #1H | 12,800 | 47730861 |
| 474732Amendment | Mar 27, 1998 | Mar 27, 1998 | Union Pacific Resources Company | Washington | Hahn Unit #1H | 12,800 | 47730861 |
| 474662 | Mar 27, 1998 | Mar 27, 1998 | Union Pacific Resources Company | Rusk | Alford 'B' Gas Unit #2S | 9,900 | 40132208 |
| 474662Amendment | Mar 27, 1998 | Mar 27, 1998 | Union Pacific Resources Company | Rusk | Alford 'B' #2S | 11,150 | 40132208 |
| 473371 | Mar 27, 1998 | Mar 27, 1998 | Union Pacific Resources Company | Rusk | J. W. Holt Estate "a" Gas Unit #3 | 11,800 | 40132845 |
| 473369 | Mar 27, 1998 | Mar 27, 1998 | Union Pacific Resources Company | Rusk | McAlister Gas Unit #6 | 11,800 | 40132846 |
| 474680 | Mar 26, 1998 | Mar 26, 1998 | Union Pacific Resources Company | Panola | Cgu 22 #11 | 10,300 | 36533919 |
| 474569 | Mar 26, 1998 | Mar 26, 1998 | Union Pacific Resources Company | Rusk | Busby Estate "a" Gas Unit #8 | 11,800 | 40132852 |
| 474566 | Mar 26, 1998 | Mar 26, 1998 | Union Pacific Resources Company | Brazos | Fuente Unit #1H | 11,800 | 04131918 |
| 474217 | Mar 26, 1998 | Mar 26, 1998 | Union Pacific Resources Company | Panola | South Gary Gas Unit 2 #6 | 10,300 | 36533901 |
| 474217Amendment | Mar 26, 1998 | Mar 26, 1998 | Union Pacific Resources Company | Panola | South Gary Gas Unit 2 #6 | 10,300 | 36533901 |
| 473751 | Mar 26, 1998 | Mar 26, 1998 | Union Pacific Resources Company | Crockett | Moody "37" #10 | 7,950 | 10538049 |
| 472899 | Mar 26, 1998 | Mar 26, 1998 | Union Pacific Resources Company | Brazos | Steephollow Unit #1H | 12,500 | 04131916 |
| 474679 | Mar 25, 1998 | Mar 25, 1998 | Union Pacific Resources Company | Panola | Cgu 20 #12 | 10,300 | 36533918 |
| 474617 | Mar 23, 1998 | Mar 23, 1998 | Union Pacific Resources Company | Panola | Dahlia O. Caudle Unit 1 #1 | 9,200 | 36530638 |
| 474597 | Mar 20, 1998 | Mar 20, 1998 | Union Pacific Resources Company | Milam | Wolf Den Unit #1H | 6,000 | 33133506 |
| 474596 | Mar 20, 1998 | Mar 20, 1998 | Union Pacific Resources Company | Victoria | McFaddin "A" #16 | 3,200 | 46932354 |
| 474439 | Mar 20, 1998 | Mar 20, 1998 | Union Pacific Resources Company | Burleson | Lisa -B- #4REH | 8,600 | 05130554 |
| 474205 | Mar 17, 1998 | Mar 17, 1998 | Union Pacific Resources Company | Crockett | Hoover, Laura GU "52A" #8 | 7,850 | 10538096 |
| 474326 | Mar 13, 1998 | Mar 13, 1998 | Union Pacific Resources Company | Crockett | Montgomery, Marshall State GU #6 | 7,300 | 10538104 |
| 474323 | Mar 13, 1998 | Mar 13, 1998 | Union Pacific Resources Company | Crockett | Montgomery, Marshall State GU #5 | 7,300 | 10538103 |
| 474320 | Mar 13, 1998 | Mar 13, 1998 | Union Pacific Resources Company | Crockett | Montgomery, Marshall State GU #4 | 7,300 | 10538102 |
| 474288 | Mar 12, 1998 | Mar 12, 1998 | Union Pacific Resources Company | Crockett | Henderson "25" #2HH | 10,000 | 10538101 |
| 474269 | Mar 12, 1998 | Mar 12, 1998 | Union Pacific Resources Company | Panola | Bleakley, P. J. #4 | 9,800 | 36533904 |
| 474124 | Mar 11, 1998 | Mar 11, 1998 | Union Pacific Resources Company | Crockett | Henderson, J. W. (Amoco) #4 | 7,800 | 10538094 |
| 474123 | Mar 11, 1998 | Mar 11, 1998 | Union Pacific Resources Company | Crockett | Henderson, J. W. (Amoco) #3 | 7,800 | 10538093 |
| 473789 | Mar 10, 1998 | Mar 10, 1998 | Union Pacific Resources Company | Crockett | Hoover "49" #14 | 8,000 | 10538061 |
| 473786 | Mar 10, 1998 | Mar 10, 1998 | Union Pacific Resources Company | Crockett | Hoover "49" #13 | 8,000 | 10538063 |
| 474001 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover, Laura Estate "52D" #4 | 7,850 | 10538086 |
| 474000 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover, Laura Estate "52C" #6 | 7,850 | 10538085 |
| 473999 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover, Laura GU #3052 | 7,850 | 10538087 |
| 473788 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover "49" #12 | 8,000 | 10538062 |
| 473760 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover "44" #14 | 8,000 | 10538060 |
| 473759 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover "44" #10 | 8,000 | 10538056 |
| 473758 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover "44" #11 | 8,000 | 10538057 |
| 473757 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover "44" #12 | 8,000 | 10538058 |
| 473756 | Mar 6, 1998 | Mar 6, 1998 | Union Pacific Resources Company | Crockett | Hoover "44" #13 | 8,000 | 10538059 |
| 474032 | Mar 4, 1998 | Mar 4, 1998 | Union Pacific Resources Company | Newton | Texaco Ami Unit 5 #1HH | 14,000 | 35130573 |
| 474031 | Mar 4, 1998 | Mar 4, 1998 | Union Pacific Resources Company | Robertson | Caribou Unit #1H | 7,200 | 39530560 |
| 474030 | Mar 4, 1998 | Mar 4, 1998 | Union Pacific Resources Company | Milam | McCrary Unit #1H | 7,500 | 33133505 |
| 474030Amendment | Mar 4, 1998 | Mar 4, 1998 | Union Pacific Resources Company | Milam | McCrary Unit #1H | 7,500 | 33133505 |
| 474029 | Mar 4, 1998 | Mar 4, 1998 | Union Pacific Resources Company | Crockett | Couch 21-22 #1HH | 10,000 | 10538088 |
| 474029Amendment | Mar 4, 1998 | Mar 4, 1998 | Union Pacific Resources Company | Crockett | Couch 21-22 #1 | 10,000 | 10538088 |
| 473889 | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Jasper | Lewis Unit A-340 #1H | 12,500 | 24130651 |
| 473889Amendment | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Jasper | Lewis Unit A-340 #1H | 12,500 | 24130651 |
| 473889Amendment | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Jasper | Lewis Unit A-340 #1H | 12,472 | 24130651 |
| 473887 | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Goliad | Reutter-Dohmann Unit #2 | 11,700 | 17533075 |
| 473886 | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Washington | Seidel Unit #1H | 15,500 | 47730859 |
| 473886Amendment | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Washington | Seidel Unit #1H | 15,500 | 47730859 |
| 473886Amendment | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Washington | Seidel Unit #1H | 15,500 | 47730859 |
| 473884 | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Jasper | Crew Unit A-342 #1H | 12,500 | 24130652 |
| 472899Amendment | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Brazos | Steephollow Unit #1H | 12,500 | 04131916 |
| 472899Amendment | Mar 2, 1998 | Mar 2, 1998 | Union Pacific Resources Company | Brazos | Steephollow Unit #1H | 12,500 | 04131916 |
| 472657 | Feb 28, 1998 | Feb 28, 1998 | Union Pacific Resources Company | Panola | Cgu 3 #11 | 10,100 | 36533873 |
| 473859 | Feb 27, 1998 | Feb 27, 1998 | Union Pacific Resources Company | Burleson | Herrmann, Roy #5REH | 9,000 | 05131704 |
| 473761 | Feb 26, 1998 | Feb 26, 1998 | Union Pacific Resources Company | Crockett | Hoover "49" #15 | 8,000 | 10538055 |
| 473620 | Feb 25, 1998 | Feb 25, 1998 | Union Pacific Resources Company | Fayette | Schkade-Paseur Unit #1 | 13,000 | 14932507 |
| 473525 | Feb 25, 1998 | Feb 25, 1998 | Union Pacific Resources Company | Panola | Cgu 22 #5 | 10,050 | 36532183 |
| 473750 | Feb 24, 1998 | Feb 24, 1998 | Union Pacific Resources Company | Crockett | Hoover "49" #11 | 8,000 | 10538050 |
| 473665 | Feb 23, 1998 | Feb 23, 1998 | Union Pacific Resources Company | Robertson | Timberwolf Unit #1H | 7,400 | 39530537 |
| 473229 | Feb 19, 1998 | Feb 19, 1998 | Union Pacific Resources Company | Panola | C. E. Moore Unit #5 | 10,250 | 36532631 |
| 473368 | Feb 18, 1998 | Feb 18, 1998 | Union Pacific Resources Company | Rusk | High Estate Gas Unit #6 | 11,800 | 40132844 |
| 473404 | Feb 17, 1998 | Feb 17, 1998 | Union Pacific Resources Company | Dimmit | Fitzsimons "A' #1714 | 4,000 | 12733151 |
| 473403 | Feb 17, 1998 | Feb 17, 1998 | Union Pacific Resources Company | Dimmit | Fitzsimons "A" #2416 | 4,000 | 12733152 |
| 473400 | Feb 17, 1998 | Feb 17, 1998 | Union Pacific Resources Company | Dimmit | Fitzsimons "A" #2501 | 4,000 | 12733153 |
| 473398 | Feb 17, 1998 | Feb 17, 1998 | Union Pacific Resources Company | Robertson | Bison Unit #1H | 7,000 | 39530559 |
| 473398Amendment | Feb 17, 1998 | Feb 17, 1998 | Union Pacific Resources Company | Robertson | Bison #1H | 7,000 | 39530559 |
| 473397 | Feb 17, 1998 | Feb 17, 1998 | Union Pacific Resources Company | Dimmit | Fitzsimons "A' #1713 | 4,000 | 12733154 |
| 473367 | Feb 17, 1998 | Feb 17, 1998 | Union Pacific Resources Company | Panola | Cgu 35 #3 | 9,875 | 36532917 |
| 473338 | Feb 13, 1998 | Feb 13, 1998 | Union Pacific Resources Company | Fayette | Mahlmann-Walther Unit #1H | 10,500 | 14932567 |
| 473082 | Feb 13, 1998 | Feb 13, 1998 | Union Pacific Resources Company | Panola | South Gary Gas Unit 1 #7 | 10,300 | 36533880 |
| 473079 | Feb 13, 1998 | Feb 13, 1998 | Union Pacific Resources Company | Panola | E. Border Gas Unit 1 #5 | 10,000 | 36533881 |
| 473074 | Feb 13, 1998 | Feb 13, 1998 | Union Pacific Resources Company | Crockett | Moody #3314 | 7,900 | 10538027 |
| 473073 | Feb 13, 1998 | Feb 13, 1998 | Union Pacific Resources Company | Crockett | Moody #3312 | 7,900 | 10538026 |
| 473303 | Feb 12, 1998 | Feb 12, 1998 | Union Pacific Resources Company | Crockett | Friend "C" #5 | 9,000 | 10538036 |
| 473303Amendment | Feb 12, 1998 | Feb 12, 1998 | Union Pacific Resources Company | Crockett | Friend "C" #5 | 8,500 | 10538036 |
| 473301 | Feb 12, 1998 | Feb 12, 1998 | Union Pacific Resources Company | Crockett | Friend "A" #7 | 9,000 | 10538037 |
| 473245 | Feb 11, 1998 | Feb 11, 1998 | Union Pacific Resources Company | Fayette | Sengelmann-Teinert Unit #1 | 12,000 | 14932521 |
| 473243 | Feb 11, 1998 | Feb 11, 1998 | Union Pacific Resources Company | Zapata | Haynes #16 | 14,500 | 50533753 |
| 473243Amendment | Feb 11, 1998 | Feb 11, 1998 | Union Pacific Resources Company | Zapata | Haynes #16 | 14,500 | 50533753 |
| 473075 | Feb 11, 1998 | Feb 11, 1998 | Union Pacific Resources Company | Crockett | Moody #3316 | 7,900 | 10538028 |
| 473075Amendment | Feb 11, 1998 | Feb 11, 1998 | Union Pacific Resources Company | Crockett | Moody #3316 | 7,900 | 10538028 |
| 473098 | Feb 9, 1998 | Feb 9, 1998 | Union Pacific Resources Company | Crockett | Moody "37" #11 | 7,950 | 10538024 |
| 473097 | Feb 9, 1998 | Feb 9, 1998 | Union Pacific Resources Company | Crockett | Moody "37" #12 | 7,950 | 10538023 |
| 473077 | Feb 9, 1998 | Feb 9, 1998 | Union Pacific Resources Company | Crockett | Moody #3313 | 7,900 | 10538029 |
| 473099 | Feb 8, 1998 | Feb 8, 1998 | Union Pacific Resources Company | Crockett | Moody "37" #9 | 7,950 | 10538025 |
| 472974 | Feb 5, 1998 | Feb 5, 1998 | Union Pacific Resources Company | Fayette | Teinert-Kunze Unit #1 | 12,500 | 14932612 |
| 472973 | Feb 5, 1998 | Feb 5, 1998 | Union Pacific Resources Company | Fayette | Samelson-Kunze Unit #1 | 12,500 | 14932670 |
| 472972 | Feb 5, 1998 | Feb 5, 1998 | Union Pacific Resources Company | Crockett | Moody #3315 | 7,900 | 10538020 |
| 472971 | Feb 5, 1998 | Feb 5, 1998 | Union Pacific Resources Company | Crockett | Moody #3311 | 7,900 | 10538019 |