| 463820 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Cummins, H. E. 'B' #30 | 7,000 | 13537496 |
| 463820Amendment | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Cummins, H. E. 'B' #30 | 7,000 | 13537496 |
| 463820Amendment | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Cummins, H. E. 'B' #30 | 7,000 | 13537496 |
| 463819 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Cummins, H. E. 'B' #31 | 7,000 | 13537495 |
| 463819Amendment | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Cummins, H. E. 'B' #31 | 7,000 | 13537495 |
| 463316 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #280 | 7,000 | 13537468 |
| 463315 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corporation | Goldsmith Cummins Deep Unit #279 | 7,000 | 13538169 |
| 463312 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #256 | 7,000 | 13537472 |
| 463310 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #255 | 7,000 | 13537473 |
| 463309 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #254 | 7,000 | 13537474 |
| 463306 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #251 | 7,000 | 13537477 |
| 463305 | Jul 9, 1997 | Jul 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #250 | 7,000 | 13537478 |
| 464366 | Jul 1, 1997 | Jul 1, 1997 | Texaco E & P Inc. | Ector 'BK' Fee #1 | 6,500 | 13537509 |
| 464366Amendment | Jul 1, 1997 | Jul 1, 1997 | Texaco E & P Inc. | Ector 'BK' Fee #1 | 7,000 | 13537509 |
| 464365 | Jul 1, 1997 | Jul 1, 1997 | Texaco E & P Inc. | Penwell Unit #4389 | 3,900 | 13537510 |
| 464364 | Jul 1, 1997 | Jul 1, 1997 | Texaco E & P Inc. | Penwell Unit #4390 | 3,900 | 13537511 |
| 464143 | Jun 25, 1997 | Jun 25, 1997 | Anadarko Petroleum Corp. | TXL South Unit #3723 | 7,000 | 13537508 |
| 464142 | Jun 25, 1997 | Jun 25, 1997 | Anadarko Petroleum Corp. | TXL South Unit #3724 | 7,000 | 13537507 |
| 464079 | Jun 24, 1997 | Jun 24, 1997 | Anadarko Petroleum Corp. | TXL South Unit #2217 | 7,000 | 13537506 |
| 464078 | Jun 24, 1997 | Jun 24, 1997 | Anadarko Petroleum Corp. | TXL South Unit #2405 | 7,000 | 13537505 |
| 464074 | Jun 24, 1997 | Jun 24, 1997 | Anadarko Petroleum Corp. | TXL South Unit #6113 | 7,000 | 13537501 |
| 464073 | Jun 24, 1997 | Jun 24, 1997 | Anadarko Petroleum Corp. | TXL South Unit #2216 | 7,000 | 13537500 |
| 464050 | Jun 24, 1997 | Jun 24, 1997 | Anadarko Petroleum Corp. | TXL -E- #1 | 9,837 | 13505970 |
| 463838 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #842 | 7,000 | 13537494 |
| 463836 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #841 | 7,000 | 13537493 |
| 463834 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #840 | 7,000 | 13537492 |
| 463831 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #839 | 7,000 | 13537491 |
| 463830 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #838 | 7,000 | 13537490 |
| 463828 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #807 | 7,000 | 13537489 |
| 463826 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #806 | 7,000 | 13537488 |
| 463825 | Jun 20, 1997 | Jun 20, 1997 | Anadarko Petroleum Corp. | TXL North Unit #804 | 7,000 | 13537487 |
| 462837 | Jun 19, 1997 | Jun 19, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummings Deep Unit #264 | 7,000 | 13537462 |
| 463566 | Jun 17, 1997 | Jun 17, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #2007 | 6,100 | 13537485 |
| 463724 | Jun 16, 1997 | Jun 16, 1997 | Citation Oil & Gas Corp. | Cowden "12" #1 | 8,826 | 13535884 |
| 462842 | Jun 16, 1997 | Jun 16, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummings Deep Unit #257 | 7,000 | 13537466 |
| 462841 | Jun 16, 1997 | Jun 16, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummings Deep Unit #270 | 7,000 | 13537467 |
| 462840 | Jun 16, 1997 | Jun 16, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummings Deep Unit #269 | 7,000 | 13537465 |
| 462839 | Jun 16, 1997 | Jun 16, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummings Deep Unit #267 | 7,000 | 13537464 |
| 462838 | Jun 16, 1997 | Jun 16, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummings Deep Unit #266 | 7,000 | 13537463 |
| 462836 | Jun 16, 1997 | Jun 16, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummings Deep Unit #258 | 7,000 | 13537461 |
| 463401 | Jun 10, 1997 | Jun 10, 1997 | Anadarko Petroleum Corp. | Thomas -H- Tract 1 #1 | 9,793 | 13507039 |
| 461837 | Jun 10, 1997 | Jun 10, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #244 | 7,000 | 13537417 |
| 461836 | Jun 10, 1997 | Jun 10, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #243 | 7,000 | 13537416 |
| 463441 | Jun 9, 1997 | Jun 9, 1997 | Chevron U. S. A. Inc. | Goldsmith San Andres Unit #9W | 4,600 | 13500424 |
| 462877 | Jun 9, 1997 | Jun 9, 1997 | Phillips Petroleum Company | Embar #43 | 5,900 | 13502733 |
| 462269 | Jun 9, 1997 | Jun 9, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #4806 | 6,100 | 13537435 |
| 463313 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #272 | 7,000 | 13537471 |
| 462643 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #259 | 7,000 | 13537453 |
| 462642 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #260 | 7,000 | 13537454 |
| 462641 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #261 | 7,000 | 13537455 |
| 462640 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #268 | 7,000 | 13537456 |
| 462639 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #265 | 7,000 | 13537457 |
| 462638 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #263 | 7,000 | 13537458 |
| 462637 | Jun 6, 1997 | Jun 6, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #262 | 7,000 | 13537459 |
| 461835 | Jun 4, 1997 | Jun 4, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #247 | 7,000 | 13537415 |
| 461834 | Jun 4, 1997 | Jun 4, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #248 | 7,000 | 13537414 |
| 461833 | Jun 4, 1997 | Jun 4, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #249 | 7,000 | 13537413 |
| 461830 | Jun 2, 1997 | Jun 2, 1997 | Anadarko Petroleum Corp. | Slator, J. D., Jr. #10 | 7,000 | 13537411 |
| 461828 | Jun 2, 1997 | Jun 2, 1997 | Anadarko Petroleum Corp. | Slator, J. D., Jr. #11 | 7,000 | 13537410 |
| 462878 | May 30, 1997 | May 30, 1997 | Phillips Petroleum Company | Shoebar Ranch-B #1 | 10,057 | 13536905 |
| 462764 | May 30, 1997 | May 30, 1997 | Phillips Petroleum Company | Blakeney #7 | 5,850 | 13533580 |
| 463076 | May 29, 1997 | May 29, 1997 | Costilla Energy, Inc. | Kelly, Daisy 36 "D" #1H | 10,000 | 13530492 |
| 462971 | May 28, 1997 | May 28, 1997 | Phillips Petroleum Company | Frank A #13 | 4,400 | 13503136 |
| 462003 | May 28, 1997 | May 28, 1997 | Triad Energy Corporation | Woods, E. N. #19 | 4,700 | 13537418 |
| 462822 | May 23, 1997 | May 23, 1997 | Texaco E & P Inc. | El Sapo '3' #1 | 4,300 | 13537460 |
| 462428 | May 23, 1997 | May 23, 1997 | Texaco E & P Inc. | Holt, O. B. #136 | 4,850 | 13537452 |
| 462562 | May 22, 1997 | May 22, 1997 | Phillips Petroleum Company | Embar #22 | 4,500 | 13502731 |
| 462293 | May 21, 1997 | May 21, 1997 | Anadarko Petroleum Corp. | TXL North Unit #835 | 7,000 | 13537443 |
| 462292 | May 21, 1997 | May 21, 1997 | Anadarko Petroleum Corp. | TXL North Unit #834 | 7,000 | 13537442 |
| 462289 | May 21, 1997 | May 21, 1997 | Anadarko Petroleum Corp. | TXL North Unit #831 | 7,000 | 13537439 |
| 462288 | May 21, 1997 | May 21, 1997 | Anadarko Petroleum Corp. | TXL North Unit #830 | 7,000 | 13537438 |
| 462286 | May 21, 1997 | May 21, 1997 | Anadarko Petroleum Corp. | TXL North Unit #828 | 7,000 | 13537436 |
| 462352 | May 19, 1997 | May 19, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #1713 | 6,100 | 13537451 |
| 462345 | May 19, 1997 | May 19, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #1806 | 6,100 | 13537450 |
| 462344 | May 19, 1997 | May 19, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #3916 | 6,100 | 13537449 |
| 462313 | May 16, 1997 | May 16, 1997 | Great Western Drlg. Co. | Johnson, J. L. "31" #24 | 8,905 | 13535657 |
| 462295 | May 16, 1997 | May 16, 1997 | Anadarko Petroleum Corp. | TXL North Unit #837 | 7,000 | 13537445 |
| 462294 | May 16, 1997 | May 16, 1997 | Anadarko Petroleum Corp. | TXL North Unit #836 | 7,000 | 13537444 |
| 462291 | May 16, 1997 | May 16, 1997 | Anadarko Petroleum Corp. | TXL North Unit #833 | 7,000 | 13537441 |
| 462290 | May 16, 1997 | May 16, 1997 | Anadarko Petroleum Corp. | TXL North Unit #832 | 7,000 | 13537440 |
| 462287 | May 16, 1997 | May 16, 1997 | Anadarko Petroleum Corp. | TXL North Unit #829 | 7,000 | 13537437 |
| 462160 | May 16, 1997 | May 16, 1997 | Anadarko Petroleum Corp. | TXL North Unit #826 | 7,000 | 13537432 |
| 462166 | May 15, 1997 | May 15, 1997 | Pen-Tex Production Co. L.L.C. | Ector -AR- Fee #6 | 3,920 | 13520515 |
| 462161 | May 15, 1997 | May 15, 1997 | Anadarko Petroleum Corp. | TXL North Unit #827 | 7,000 | 13537431 |
| 462159 | May 15, 1997 | May 15, 1997 | Anadarko Petroleum Corp. | TXL North Unit #825 | 7,000 | 13537433 |
| 462157 | May 15, 1997 | May 15, 1997 | Anadarko Petroleum Corp. | TXL North Unit #824 | 7,000 | 13537434 |
| 462156 | May 14, 1997 | May 14, 1997 | Anadarko Petroleum Corp. | TXL North Unit #811 | 7,000 | 13537448 |
| 462154 | May 14, 1997 | May 14, 1997 | Anadarko Petroleum Corp. | TXL North Unit #803 | 7,000 | 13537447 |
| 462150 | May 14, 1997 | May 14, 1997 | Anadarko Petroleum Corp. | TXL North Unit #812 | 7,000 | 13537446 |
| 462150Amendment | May 14, 1997 | May 14, 1997 | Anadarko Petroleum Corp. | TXL North Unit #812 | 7,000 | 13537446 |
| 461969 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #817 | 7,000 | 13537430 |
| 461968 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #816 | 7,000 | 13537429 |
| 461967 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #815 | 7,000 | 13537428 |
| 461966 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #814 | 7,000 | 13537427 |
| 461965 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #813 | 7,000 | 13537426 |
| 461964 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #818 | 7,000 | 13537425 |
| 461961 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #819 | 7,000 | 13537424 |
| 461961Amendment | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #819 | 7,000 | 13537424 |
| 461958 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #823 | 7,000 | 13537423 |
| 461958Amendment | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #823 | 7,000 | 13537423 |