| 355247 | Jan 17, 1989 | Jan 17, 1989 | Transamerican Natural Gas Corp. | Zapata | La Perla #87 | 10,500 | 50532521 |
| 355247Amendment | Jan 17, 1989 | Jan 17, 1989 | Transamerican Natural Gas Corp. | Zapata | La Perla #87 | 10,500 | 50532521 |
| 354922 | Jan 10, 1989 | Jan 10, 1989 | Transamerican Natural Gas Corp. | Webb | Lundell #59 | 11,000 | 47934804 |
| 354927 | Jan 9, 1989 | Jan 9, 1989 | Transamerican Natural Gas Corp. | Webb | Hubberd "C" #3 | 9,500 | 47935456 |
| 354839 | Jan 6, 1989 | Jan 6, 1989 | Transamerican Natural Gas Corp. | Zapata | Haynes #8 | 14,000 | 50532519 |
| 354908 | Jan 5, 1989 | Jan 5, 1989 | Transamerican Natural Gas Corp. | Webb | Lundell #52 | 11,000 | 47934800 |
| 354874 | Jan 4, 1989 | Jan 4, 1989 | Transamerican Natural Gas Corp. | Webb | Hubberd "T" #2 | 8,500 | 47934799 |
| 354738 | Dec 29, 1988 | Dec 29, 1988 | Transamerican Natural Gas Corp. | Zapata | Bernardo G.U. #3 | 14,000 | 50532517 |
| 354737 | Dec 29, 1988 | Dec 29, 1988 | Transamerican Natural Gas Corp. | Zapata | Araceli #1 | 14,000 | 50532516 |
| 354571 | Dec 22, 1988 | Dec 22, 1988 | Transamerican Natural Gas Corp. | Zapata | Puig-King Gas Unit #4 | 9,800 | 50532515 |
| 354343 | Dec 19, 1988 | Dec 19, 1988 | Transamerican Natural Gas Corp. | Zapata | Benavides, B. R. #13 | 10,500 | 50532512 |
| 354194 | Dec 14, 1988 | Dec 14, 1988 | Transamerican Natural Gas Corp. | Webb | Block, Anna #3 | 8,500 | 47934791 |
| 354152 | Dec 12, 1988 | Dec 12, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #26 | 8,500 | 47934790 |
| 354136 | Dec 9, 1988 | Dec 9, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #30 | 8,200 | 47934789 |
| 353881 | Dec 6, 1988 | Dec 6, 1988 | Transamerican Natural Gas Corp. | Webb | Martinez, D. #6 | 8,000 | 47934787 |
| 353882 | Dec 5, 1988 | Dec 5, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #86 | 10,200 | 50532506 |
| 353816 | Dec 2, 1988 | Dec 2, 1988 | Transamerican Natural Gas Corp. | Zapata | De Los Santos GU 1 #4 | 12,000 | 50532505 |
| 353659 | Nov 30, 1988 | Nov 30, 1988 | Transamerican Natural Gas Corp. | Webb | B.M.T. #26 | 11,400 | 47934784 |
| 353622 | Nov 23, 1988 | Nov 23, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #27 | 8,500 | 47934782 |
| 353622Amendment | Nov 23, 1988 | Nov 23, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #27 | 8,500 | 47934782 |
| 353540 | Nov 23, 1988 | Nov 23, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #85 | 10,500 | 50532502 |
| 353440 | Nov 22, 1988 | Nov 22, 1988 | Transamerican Natural Gas Corp. | Webb | Benavides, R. V. #9 | 7,000 | 47934779 |
| 353289 | Nov 16, 1988 | Nov 16, 1988 | Transamerican Natural Gas Corp. | Zapata | J.O.D. #2 | 11,700 | 50532500 |
| 353087 | Nov 7, 1988 | Nov 7, 1988 | Transamerican Natural Gas Corp. | Zapata | Benavides, B. R. #14 | 10,500 | 50532499 |
| 353087Amendment | Nov 7, 1988 | Nov 7, 1988 | Transamerican Natural Gas Corp. | Zapata | Benavides, B. R. #14 | 10,500 | 50532499 |
| 352855 | Nov 2, 1988 | Nov 2, 1988 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #33 | 10,500 | 47934772 |
| 352780 | Nov 2, 1988 | Nov 2, 1988 | Transamerican Natural Gas Corp. | Webb | Jacaman "B" #1 | 9,000 | 47935326 |
| 352554 | Oct 25, 1988 | Oct 25, 1988 | Transamerican Natural Gas Corp. | Webb | Lechenger #11 | 1,300 | 47934764 |
| 352553 | Oct 25, 1988 | Oct 25, 1988 | Transamerican Natural Gas Corp. | Webb | Carr #36 | 9,200 | 47934765 |
| 352377 | Oct 18, 1988 | Oct 18, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #83 | 10,000 | 50532495 |
| 352320 | Oct 18, 1988 | Oct 18, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #32 | 8,500 | 47934759 |
| 352319 | Oct 18, 1988 | Oct 18, 1988 | Transamerican Natural Gas Corp. | Webb | Martinez, D. #5 | 8,000 | 47934758 |
| 352378 | Oct 17, 1988 | Oct 17, 1988 | Transamerican Natural Gas Corp. | Zapata | Vasquez #1 | 9,000 | 50532494 |
| 352100 | Oct 11, 1988 | Oct 11, 1988 | Transamerican Natural Gas Corp. | Webb | Schwarz #13 | 8,500 | 47934757 |
| 351868 | Oct 4, 1988 | Oct 4, 1988 | Transamerican Natural Gas Corp. | Webb | McKendrick #11 | 8,000 | 47934754 |
| 351868Amendment | Oct 4, 1988 | Oct 4, 1988 | Transamerican Natural Gas Corp. | Webb | McKendrick #11 | 8,000 | 47934754 |
| 351399 | Sep 20, 1988 | Sep 20, 1988 | Transamerican Natural Gas Corp. | Webb | State Lease "B" #2 | 12,300 | 47934747 |
| 351399Amendment | Sep 20, 1988 | Sep 20, 1988 | Transamerican Natural Gas Corp. | Webb | State Lease "B" #2 | 12,300 | 47934747 |
| 351278 | Sep 19, 1988 | Sep 19, 1988 | Transamerican Natural Gas Corp. | Zapata | Asche #19 | 10,500 | 50532489 |
| 351276 | Sep 19, 1988 | Sep 19, 1988 | Transamerican Natural Gas Corp. | Zapata | Irene #2 | 14,500 | 50532488 |
| 351168 | Sep 14, 1988 | Sep 14, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #82 | 10,500 | 50532487 |
| 351114 | Sep 13, 1988 | Sep 13, 1988 | Transamerican Natural Gas Corp. | Zapata | Benavides, C. Y. #2 | 9,700 | 50532486 |
| 350936 | Sep 8, 1988 | Sep 8, 1988 | Transamerican Natural Gas Corp. | Zapata | Gutierrez, E. E. #2R | 14,000 | 50532485 |
| 350745 | Sep 7, 1988 | Sep 7, 1988 | Transamerican Natural Gas Corp. | Webb | Martinez, S. #4 | 8,700 | 47934740 |
| 350746 | Sep 2, 1988 | Sep 2, 1988 | Transamerican Natural Gas Corp. | Webb | McKendrick #10 | 8,000 | 47934741 |
| 350746Amendment | Sep 2, 1988 | Sep 2, 1988 | Transamerican Natural Gas Corp. | Webb | McKendrick #10 | 8,000 | 47934741 |
| 350623 | Aug 31, 1988 | Aug 31, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #29 | 7,500 | 47934738 |
| 350559 | Aug 29, 1988 | Aug 29, 1988 | Transamerican Natural Gas Corp. | Webb | Carr #34 | 9,200 | 47934737 |
| 350210 | Aug 17, 1988 | Aug 17, 1988 | Transamerican Natural Gas Corp. | Zapata | Guerra "L" #5 | 10,000 | 50532482 |
| 350208 | Aug 17, 1988 | Aug 17, 1988 | Transamerican Natural Gas Corp. | Webb | Rottersman #13 | 10,900 | 47934730 |
| 350079 | Aug 15, 1988 | Aug 15, 1988 | Transamerican Natural Gas Corp. | Zapata | Benavides, B. R. "A" #1 | 13,000 | 50532481 |
| 349987 | Aug 11, 1988 | Aug 11, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #24 | 8,500 | 47934727 |
| 349696 | Aug 10, 1988 | Aug 10, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #25 | 8,500 | 47934724 |
| 349694 | Aug 9, 1988 | Aug 9, 1988 | Transamerican Natural Gas Corp. | Zapata | De Los Santos G.U. 1 #3 | 12,000 | 50532478 |
| 349695 | Aug 4, 1988 | Aug 4, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #28 | 8,000 | 47934725 |
| 349269 | Jul 26, 1988 | Jul 26, 1988 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #32 | 8,500 | 47934722 |
| 349266 | Jul 25, 1988 | Jul 25, 1988 | Transamerican Natural Gas Corp. | Zapata | Vela, Rose #1 | 9,500 | 50532474 |
| 349266Amendment | Jul 25, 1988 | Jul 25, 1988 | Transamerican Natural Gas Corp. | Zapata | Vela, Rose #1 | 10,100 | 50532474 |
| 348937 | Jul 19, 1988 | Jul 19, 1988 | Transamerican Natural Gas Corp. | Zapata | Flores, L. G. #6 | 14,500 | 50532472 |
| 348832 | Jul 13, 1988 | Jul 13, 1988 | Transamerican Natural Gas Corp. | Webb | B.M.T. #25 | 11,400 | 47934715 |
| 348661 | Jul 11, 1988 | Jul 11, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #84 | 10,500 | 50532471 |
| 348501 | Jul 7, 1988 | Jul 7, 1988 | Transamerican Natural Gas Corp. | Webb | Carr #38 | 10,000 | 47934711 |
| 347826 | Jun 16, 1988 | Jun 16, 1988 | Transamerican Natural Gas Corp. | Webb | 7-B Cattle Co. "D" #2 | 12,700 | 47934705 |
| 347819 | Jun 16, 1988 | Jun 16, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #81 | 10,400 | 50532462 |
| 347818 | Jun 16, 1988 | Jun 16, 1988 | Transamerican Natural Gas Corp. | Zapata | De Los Santos G.U. 1 #6 | 14,500 | 50532463 |
| 347814 | Jun 16, 1988 | Jun 16, 1988 | Transamerican Natural Gas Corp. | Zapata | Guerra "L" #4 | 10,000 | 50532464 |
| 347813 | Jun 16, 1988 | Jun 16, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla "B" #5 | 10,000 | 50532465 |
| 346829 | May 20, 1988 | May 20, 1988 | Transamerican Natural Gas Corp. | Zapata | Fernando #5 | 9,700 | 50532457 |
| 346620 | May 17, 1988 | May 17, 1988 | Transamerican Natural Gas Corp. | Webb | Vergara "C" #3 | 10,500 | 47934686 |
| 346426 | May 11, 1988 | May 11, 1988 | Transamerican Natural Gas Corp. | Webb | Carr #35 | 9,800 | 47934683 |
| 345535 | Apr 21, 1988 | Apr 21, 1988 | Transamerican Natural Gas Corp. | Webb | Lundell #55 | 11,100 | 47934670 |
| 345363 | Apr 20, 1988 | Apr 20, 1988 | Transamerican Natural Gas Corp. | Zapata | Gutierrez, H. G. #1 | 10,500 | 50532448 |
| 345192 | Apr 14, 1988 | Apr 14, 1988 | Transamerican Natural Gas Corp. | Zapata | Asche #18 | 10,500 | 50532445 |
| 345191 | Apr 14, 1988 | Apr 14, 1988 | Transamerican Natural Gas Corp. | Zapata | Bernardo G.U. #2 | 14,500 | 50532446 |
| 344087 | Mar 21, 1988 | Mar 21, 1988 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #31 | 10,600 | 47934660 |
| 343847 | Mar 16, 1988 | Mar 16, 1988 | Transamerican Natural Gas Corp. | Zapata | Daisy #1 | 14,500 | 50532434 |
| 343846 | Mar 16, 1988 | Mar 16, 1988 | Transamerican Natural Gas Corp. | Zapata | Daisy #2 | 14,500 | 50532435 |
| 343665 | Mar 14, 1988 | Mar 14, 1988 | Transamerican Natural Gas Corp. | Zapata | De Los Santos G. U. #1 #5 | 12,000 | 50532431 |
| 343728 | Mar 10, 1988 | Mar 10, 1988 | Transamerican Natural Gas Corp. | Zapata | White #5 | 10,200 | 50532433 |
| 343728Amendment | Mar 10, 1988 | Mar 10, 1988 | Transamerican Natural Gas Corp. | Zapata | White #5 | 10,200 | 50532433 |
| 343584 | Mar 8, 1988 | Mar 8, 1988 | Transamerican Natural Gas Corp. | Zapata | Haynes #7 | 14,500 | 50532430 |
| 343456 | Mar 3, 1988 | Mar 3, 1988 | Transamerican Natural Gas Corp. | Zapata | Asche #17 | 10,500 | 50532427 |
| 343455 | Mar 3, 1988 | Mar 3, 1988 | Transamerican Natural Gas Corp. | Webb | Schwarz #12 | 8,500 | 47934652 |
| 343248 | Feb 26, 1988 | Feb 26, 1988 | Transamerican Natural Gas Corp. | Zapata | Jennings Ranch "B" #11 | 10,700 | 50532425 |
| 343208 | Feb 25, 1988 | Feb 25, 1988 | Transamerican Natural Gas Corp. | Zapata | Garza, L. #7 | 12,000 | 50532424 |
| 343207 | Feb 25, 1988 | Feb 25, 1988 | Transamerican Natural Gas Corp. | Zapata | Haynes #6 | 14,500 | 50532423 |
| 343206 | Feb 25, 1988 | Feb 25, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #23 | 8,500 | 47934648 |
| 342995 | Feb 25, 1988 | Feb 25, 1988 | Transamerican Natural Gas Corp. | Zapata | Garza-Munoz G. U. #1 | 14,200 | 50532421 |
| 342673 | Feb 17, 1988 | Feb 17, 1988 | Transamerican Natural Gas Corp. | Webb | Lundell #51 | 10,000 | 47934643 |
| 342651 | Feb 16, 1988 | Feb 16, 1988 | Transamerican Natural Gas Corp. | Webb | Hereford #22 | 7,900 | 47934642 |
| 342650 | Feb 16, 1988 | Feb 16, 1988 | Transamerican Natural Gas Corp. | Webb | B.M.T. #24 | 11,300 | 47934641 |
| 342560 | Feb 11, 1988 | Feb 11, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #79 | 9,900 | 50532420 |
| 342039 | Jan 29, 1988 | Jan 29, 1988 | Transamerican Natural Gas Corp. | Zapata | King "B" #4D | 9,700 | 50532417 |
| 341888 | Jan 25, 1988 | Jan 25, 1988 | Transamerican Natural Gas Corp. | Zapata | La Perla #80 | 10,500 | 50532415 |
| 341335 | Jan 14, 1988 | Jan 14, 1988 | Transamerican Natural Gas Corp. | Zapata | Asche #16 | 10,500 | 50532413 |
| 341239 | Jan 13, 1988 | Jan 13, 1988 | Transamerican Natural Gas Corp. | Zapata | Rodriguez G.U. #1 #1 | 14,200 | 50532412 |
| 341237 | Jan 13, 1988 | Jan 13, 1988 | Transamerican Natural Gas Corp. | Webb | Vergara "C" #2 | 10,500 | 47934630 |
| 340891 | Jan 4, 1988 | Jan 4, 1988 | Transamerican Natural Gas Corp. | Zapata | Benavides, B. R. #11 | 10,500 | 50532409 |
| 340647 | Dec 28, 1987 | Dec 28, 1987 | Transamerican Natural Gas Corp. | Zapata | La Perla #78 | 10,300 | 50532407 |
| 340450 | Dec 18, 1987 | Dec 18, 1987 | Transamerican Natural Gas Corp. | Zapata | Flores, L. G. #5 | 14,200 | 50532404 |