| 474895 | Apr 1, 1998 | Apr 1, 1998 | Coastal Oil & Gas Corporation | Hidalgo | M. Salinas Gas Unit #4 | 14,000 | 21532472 |
| 474894 | Apr 1, 1998 | Apr 1, 1998 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #93 | 10,500 | 50533782 |
| 474894Amendment | Apr 1, 1998 | Apr 1, 1998 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #93ST | 10,500 | 50533782 |
| 474734 | Mar 26, 1998 | Mar 26, 1998 | Coastal Oil & Gas Corporation | Starr | Ramirez GU "E" #11 | 10,664 | 42732796 |
| 474733 | Mar 26, 1998 | Mar 26, 1998 | Coastal Oil & Gas Corporation | Starr | Guerra GU "D" #12 | 14,000 | 42733100 |
| 474694 | Mar 25, 1998 | Mar 25, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Hamman Ranch #17 | 12,000 | 21531300 |
| 474572 | Mar 20, 1998 | Mar 20, 1998 | Coastal Oil & Gas Corporation | Starr | State Park #3 | 12,800 | 42733096 |
| 474210 | Mar 10, 1998 | Mar 10, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Dougherty, M. P. #7607 | 9,000 | 21532518 |
| 474108 | Mar 6, 1998 | Mar 6, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Castillo Deep GU #1 | 13,930 | 21532296 |
| 473826 | Feb 26, 1998 | Feb 26, 1998 | Coastal Oil & Gas Corporation | Starr | Guerra GU "B" #7 | 12,420 | 42732677 |
| 473574 | Feb 20, 1998 | Feb 20, 1998 | Coastal Oil & Gas Corporation | Zapata | Dye, James D. #8 | 11,000 | 50533763 |
| 473494 | Feb 18, 1998 | Feb 18, 1998 | Coastal Oil & Gas Corporation | Hidalgo | R & R Royalty #1 | 17,500 | 21532516 |
| 473494Amendment | Feb 18, 1998 | Feb 18, 1998 | Coastal Oil & Gas Corporation | Hidalgo | R & R Royalty #1 | 15,968 | 21532516 |
| 473343 | Feb 13, 1998 | Feb 13, 1998 | Coastal Oil & Gas Corporation | Starr | Guerra GU "D" #9 | 15,500 | 42733088 |
| 473227 | Feb 11, 1998 | Feb 11, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Machac Gas Unit #3 | 16,500 | 21532513 |
| 473227Amendment | Feb 11, 1998 | Feb 11, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Machac Gas Unit #3 | 16,500 | 21532513 |
| 473094 | Feb 9, 1998 | Feb 9, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Hamman Ranch #36 | 14,000 | 21532512 |
| 472967 | Feb 5, 1998 | Feb 5, 1998 | Coastal Oil & Gas Corporation | Lavaca | Brau #1 | 13,000 | 28532577 |
| 472967Amendment | Feb 5, 1998 | Feb 5, 1998 | Coastal Oil & Gas Corporation | Lavaca | Brau #1 | 15,000 | 28532577 |
| 472966 | Feb 5, 1998 | Feb 5, 1998 | Coastal Oil & Gas Corporation | Brazos-LB | Brazos S. T. 368-L #5 | 9,000 | 70430326 |
| 472600 | Jan 26, 1998 | Jan 26, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Coastal Dube #1 | 17,500 | 21532505 |
| 472547 | Jan 23, 1998 | Jan 23, 1998 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #92 | 11,000 | 50533747 |
| 472395 | Jan 20, 1998 | Jan 20, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Coates "E" #5 | 14,000 | 21532503 |
| 472394 | Jan 20, 1998 | Jan 20, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Yturria, H. L & CC #4 | 13,000 | 21531724 |
| 472318 | Jan 20, 1998 | Jan 20, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Hamman Ranch #10 | 9,800 | 21531299 |
| 472318Amendment | Jan 20, 1998 | Jan 20, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Hamman Ranch #10 | 9,800 | 21531299 |
| 471990 | Jan 9, 1998 | Jan 9, 1998 | Coastal Oil & Gas Corporation | Hidalgo | Castillo Deep GU #3 | 15,000 | 21532501 |
| 471635 | Dec 29, 1997 | Dec 29, 1997 | Coastal Oil & Gas Corporation | Matagorda | Elma Ayers Gas Unit #2 | 14,000 | 32131750 |
| 471634 | Dec 29, 1997 | Dec 29, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Machac Gas Unit #2 | 15,000 | 21532498 |
| 471634Amendment | Dec 29, 1997 | Dec 29, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Machac Gas Unit #2 | 16,500 | 21532498 |
| 471085 | Dec 11, 1997 | Dec 11, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #91 | 11,000 | 50533728 |
| 471085Amendment | Dec 11, 1997 | Dec 11, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #91 | 11,000 | 50533728 |
| 471085Amendment | Dec 11, 1997 | Dec 11, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #91 | 11,000 | 50533728 |
| 470331Amendment | Dec 2, 1997 | Dec 2, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Edinburg Improvement Association #1 | 8,250 | 21532009 |
| 470574 | Nov 26, 1997 | Nov 26, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "B" #5 | 14,000 | 21532488 |
| 470453 | Nov 24, 1997 | Nov 24, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #90 | 11,000 | 50533714 |
| 470349 | Nov 20, 1997 | Nov 20, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra GU "D" #10 | 14,500 | 42733059 |
| 470349Amendment | Nov 20, 1997 | Nov 20, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra GU "D" #10 | 14,500 | 42733059 |
| 470349Amendment | Nov 20, 1997 | Nov 20, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra GU "D" #10 | 14,500 | 42733059 |
| 469939 | Nov 12, 1997 | Nov 12, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Flores, R. #1 | 17,500 | 21532486 |
| 469352 | Oct 27, 1997 | Oct 27, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra GU "A" #21 | 9,300 | 42732730 |
| 469220 | Oct 24, 1997 | Oct 24, 1997 | Coastal Oil & Gas Corporation | Jim Wells | Hoffman Family #2 | 6,000 | 24932310 |
| 469206 | Oct 23, 1997 | Oct 23, 1997 | Coastal Oil & Gas Corporation | Wharton | Zeidman Trustee GU #2 | 18,500 | 48133965 |
| 468019 | Sep 25, 1997 | Sep 25, 1997 | Coastal Oil & Gas Corporation | Jim Hogg | Hellen, C. W. #1 | 18,000 | 24732091 |
| 468019Amendment | Sep 25, 1997 | Sep 25, 1997 | Coastal Oil & Gas Corporation | Jim Hogg | Hellen, C. W. #1 | 20,000 | 24732091 |
| 467963 | Sep 24, 1997 | Sep 24, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #89 | 10,500 | 50533684 |
| 467786 | Sep 19, 1997 | Sep 19, 1997 | Coastal Oil & Gas Corporation | Fayette | A. Buscha Oil Unit #01H | 9,160 | 14932431 |
| 467736 | Sep 18, 1997 | Sep 18, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Salinas, M. #4 | 14,000 | 21532472 |
| 467615 | Sep 15, 1997 | Sep 15, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra GU "C" #9 | 14,500 | 42733043 |
| 467132 | Sep 4, 1997 | Sep 4, 1997 | Coastal Oil & Gas Corporation | Jim Wells | Hoffman Family #1 | 13,000 | 24932304 |
| 467132Amendment | Sep 4, 1997 | Sep 4, 1997 | Coastal Oil & Gas Corporation | Jim Wells | Hoffman Family #1 | 15,000 | 24932304 |
| 466758 | Aug 26, 1997 | Aug 26, 1997 | Coastal Oil & Gas Corporation | Hidalgo | De Austin-Castillo GU #4 | 14,000 | 21532466 |
| 466757 | Aug 26, 1997 | Aug 26, 1997 | Coastal Oil & Gas Corporation | Duval | Longoria Mineral Trust, et Al #1 | 13,500 | 13138211 |
| 466757Amendment | Aug 26, 1997 | Aug 26, 1997 | Coastal Oil & Gas Corporation | Duval | Longoria Mineral Trust, et Al #1 | 13,500 | 13138211 |
| 466757Amendment | Aug 26, 1997 | Aug 26, 1997 | Coastal Oil & Gas Corporation | Duval | Longoria Mineral Trust, et Al #1 | 13,500 | 13138211 |
| 466137 | Aug 12, 1997 | Aug 12, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Jeffress, J. D. #20 | 13,000 | 21532461 |
| 465631 | Jul 30, 1997 | Jul 30, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Salinas, M. #9 | 15,000 | 21532458 |
| 465631Amendment | Jul 30, 1997 | Jul 30, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Salinas, M. #9 | 13,350 | 21532458 |
| 464988 | Jul 16, 1997 | Jul 16, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Salinas, M. #8 | 14,000 | 21532453 |
| 464473 | Jul 2, 1997 | Jul 2, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Edinburg Impr. Assoc. GU #4 | 15,000 | 21532450 |
| 464447 | Jul 1, 1997 | Jul 1, 1997 | Coastal Oil & Gas Corporation | Hidalgo | De Austin-Castillo GU #3 | 14,000 | 21532448 |
| 463889 | Jun 17, 1997 | Jun 17, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "F" GU #6 | 17,000 | 21532441 |
| 463889Amendment | Jun 17, 1997 | Jun 17, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "F" GU #6 | 17,000 | 21532441 |
| 463788 | Jun 16, 1997 | Jun 16, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "A" #15 | 14,000 | 21532439 |
| 463424 | Jun 6, 1997 | Jun 6, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "E" GU #3 | 15,000 | 21532436 |
| 463424Amendment | Jun 6, 1997 | Jun 6, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "E" Gas Unit #3 | 12,340 | 21532436 |
| 463275 | Jun 4, 1997 | Jun 4, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Salinas, M. #7 | 14,000 | 21532432 |
| 462627 | May 19, 1997 | May 19, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Edinburg Impr. Assoc. GU #3 | 16,000 | 21532424 |
| 462459 | May 15, 1997 | May 15, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #88 | 11,000 | 50533609 |
| 462459Amendment | May 15, 1997 | May 15, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #88 | 11,000 | 50533609 |
| 462459Amendment | May 15, 1997 | May 15, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #88 | 11,000 | 50533609 |
| 462361 | May 13, 1997 | May 13, 1997 | Coastal Oil & Gas Corporation | Brazos-LB | Brazos S.T. 368-L #4 | 8,000 | 70430320 |
| 462361Amendment | May 13, 1997 | May 13, 1997 | Coastal Oil & Gas Corporation | Brazos-LB | Brazos S.T. 368-L #4 | 8,000 | 70430320 |
| 462141 | May 8, 1997 | May 8, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Salinas #6 | 15,000 | 21532421 |
| 462116 | May 7, 1997 | May 7, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Edinburg Impr. Assoc. GU #1 | 14,000 | 21531205 |
| 461426 | Apr 21, 1997 | Apr 21, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #87 | 10,000 | 50533590 |
| 461242 | Apr 17, 1997 | Apr 17, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Boyt #1 | 16,500 | 21532416 |
| 460866 | Apr 8, 1997 | Apr 8, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Zamora State #4 | 7,850 | 21531773 |
| 460835 | Apr 8, 1997 | Apr 8, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Salinas, M. #5 | 14,000 | 21532412 |
| 460518 | Mar 31, 1997 | Mar 31, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J. W. #86 | 11,000 | 50533581 |
| 460411 | Mar 27, 1997 | Mar 27, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Boren GU #8 | 15,000 | 21532410 |
| 460333 | Mar 26, 1997 | Mar 26, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra Gas Unit "C" #7 | 15,216 | 42732791 |
| 460303 | Mar 25, 1997 | Mar 25, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "F" GU #5 | 15,000 | 21532406 |
| 460004 | Mar 18, 1997 | Mar 18, 1997 | Coastal Oil & Gas Corporation | Wharton | Zeidman Trustee GU #2 | 18,500 | 48133965 |
| 451100 | Mar 11, 1997 | Mar 11, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Adame GU #2 | 16,500 | 21532334 |
| 459591 | Mar 7, 1997 | Mar 7, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom,j.w. #85 | 11,000 | 50533570 |
| 459591Amendment | Mar 7, 1997 | Mar 7, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom,j.w. #85 | 11,000 | 50533570 |
| 459424 | Mar 4, 1997 | Mar 4, 1997 | Coastal Oil & Gas Corporation | Hidalgo | De Austin-Castillo Gas Unit #2 | 15,500 | 21532397 |
| 458742 | Feb 18, 1997 | Feb 18, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates GU "F" #4 | 17,000 | 21532395 |
| 458582 | Feb 13, 1997 | Feb 13, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Sherwood, M. #1 | 15,125 | 21532290 |
| 458326 | Feb 6, 1997 | Feb 6, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra Gas Unit "C" #13 | 14,500 | 42732957 |
| 458326Amendment | Feb 6, 1997 | Feb 6, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra GU "C" #13 | 14,500 | 42732957 |
| 458281 | Feb 6, 1997 | Feb 6, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Boren GU #7 | 15,000 | 21532390 |
| 458230 | Feb 5, 1997 | Feb 5, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J.W. #84 | 11,000 | 50533552 |
| 458230Amendment | Feb 5, 1997 | Feb 5, 1997 | Coastal Oil & Gas Corporation | Zapata | Mecom, J.W. #84 | 11,000 | 50533552 |
| 458157 | Feb 3, 1997 | Feb 3, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Coates "E" Unit #3SW | 3,700 | 21532388 |
| 457764 | Jan 23, 1997 | Jan 23, 1997 | Coastal Oil & Gas Corporation | Starr | Guerra Gas Unit "C" #12 | 12,000 | 42732953 |
| 457763 | Jan 23, 1997 | Jan 23, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Sherwood, M. #1 | 15,125 | 21532290 |
| 457721 | Jan 23, 1997 | Jan 23, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Edinburg Improvement Assoc. GU #2 | 13,666 | 21532385 |
| 457721Amendment | Jan 23, 1997 | Jan 23, 1997 | Coastal Oil & Gas Corporation | Hidalgo | Edinburg Improvement Assoc. GU #2 | 16,000 | 21532385 |