| 604833 | Aug 11, 2005 | Aug 11, 2005 | Basic Earth Science Systems,inc. | Matagorda | Pidco #2 | 13,900 | 32131653 |
| 521726 | Jul 12, 2002 | Jul 12, 2002 | Basic Earth Science Systems,inc. | Matagorda | Pidco #1 | 13,700 | 32131640 |
| 504800 | Feb 5, 2001 | Feb 5, 2001 | Basic Earth Science Systems,inc. | Webb | Benavides, S. S. #1 | 2,557 | 47901476 |
| 341320 | Jan 13, 1988 | Jan 13, 1988 | Basic Earth Science Systems,inc. | Webb | West Cole #122 | 2,413 | 47932281 |
| 297369 | Feb 10, 1986 | Feb 10, 1986 | Basic Earth Science Systems,inc. | Webb | West Cole #122 | 2,330 | 47932281 |
| 267693 | Feb 22, 1985 | Feb 22, 1985 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #1 | 2,500 | 47932687 |
| 247750 | Jul 6, 1984 | Jul 6, 1984 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #2502 | 4,000 | 47932912 |
| 232742 | Mar 16, 1984 | Mar 16, 1984 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #22 | 2,500 | 47933856 |
| 232741 | Mar 16, 1984 | Mar 16, 1984 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #23 | 2,500 | 47933855 |
| 232748 | Mar 16, 1984 | Mar 16, 1984 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #24 | 2,500 | 47933859 |
| 232747 | Mar 16, 1984 | Mar 16, 1984 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #25 | 2,500 | 47933858 |
| 232745 | Mar 16, 1984 | Mar 16, 1984 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #26 | 2,500 | 47933857 |
| 172283 | Sep 17, 1982 | Sep 17, 1982 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #2504 | 2,450 | 47933447 |
| 172281 | Sep 17, 1982 | Sep 17, 1982 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #2503 | 2,450 | 47933446 |
| 172279 | Sep 17, 1982 | Sep 17, 1982 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #20 | 2,450 | 47933445 |
| 172277 | Sep 17, 1982 | Sep 17, 1982 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #21 | 2,450 | 47933444 |
| 103088 | Dec 22, 1980 | Dec 22, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #2502 | 4,000 | 47932912 |
| 86580 | Jul 14, 1980 | Jul 14, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #18WI | 2,400 | 47932794 |
| 86579 | Jul 14, 1980 | Jul 14, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #16WI | 2,400 | 47932795 |
| 85453 | Jun 30, 1980 | Jun 30, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #17W | 2,400 | 47932783 |
| 85451 | Jun 30, 1980 | Jun 30, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #15W | 2,400 | 47932781 |
| 85295 | Jun 27, 1980 | Jun 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #3W | 2,400 | 47932776 |
| 82146 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #14 | 2,400 | 47932732 |
| 82144 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #13W | 2,400 | 47932731 |
| 82142 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #12 | 2,400 | 47932730 |
| 82141 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #11W | 2,400 | 47932729 |
| 82139 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #10 | 2,400 | 47932728 |
| 82138 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #9W | 2,400 | 47932727 |
| 82137 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #8 | 2,400 | 47932726 |
| 82129 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #7 | 2,400 | 47932725 |
| 82127 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #6 | 2,400 | 47932724 |
| 82126 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #5 | 2,400 | 47932723 |
| 82125 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #4W | 2,400 | 47932722 |
| 82124 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #2W | 2,400 | 47932721 |
| 82121 | May 27, 1980 | May 27, 1980 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #1 | 2,400 | 47932720 |
| 79751 | Apr 30, 1980 | Apr 30, 1980 | Basic Earth Science Systems,inc. | Webb | North West Cole Unit #1WS | 4,000 | 47932687 |
| 53473 | Jul 23, 1979 | Jul 23, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #322W | 2,350 | 47932412 |
| 53471 | Jul 23, 1979 | Jul 23, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #371W | 2,350 | 47932413 |
| 52029 | Jul 2, 1979 | Jul 2, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #252 | 2,400 | 47932402 |
| 51740 | Jun 27, 1979 | Jun 27, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #251 | 2,380 | 47932399 |
| 51708 | Jun 27, 1979 | Jun 27, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #361 | 2,350 | 47932398 |
| 51707 | Jun 27, 1979 | Jun 27, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #512 | 2,430 | 47932397 |
| 51706 | Jun 27, 1979 | Jun 27, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #841 | 2,420 | 47932396 |
| 51704 | Jun 27, 1979 | Jun 27, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #181 | 2,400 | 47932395 |
| 51703 | Jun 27, 1979 | Jun 27, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #191 | 2,400 | 47932394 |
| 45991 | Apr 10, 1979 | Apr 10, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #6164D | 2,400 | 47932324 |
| 45983 | Apr 9, 1979 | Apr 9, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #3111 | 2,380 | 47932326 |
| 45982 | Apr 9, 1979 | Apr 9, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #511 | 2,400 | 47932325 |
| 43771 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #321 W | 2,500 | 47932284 |
| 43770 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #161 W | 2,500 | 47932283 |
| 43768 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #121 W | 2,500 | 47932282 |
| 43767 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #122 W | 2,500 | 47932281 |
| 43766 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #811 W | 2,500 | 47932280 |
| 43764 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #851 W | 2,500 | 47932279 |
| 43763 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #5102 W | 2,500 | 47932278 |
| 43762 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #9131 W | 2,500 | 47932285 |
| 43761 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole North Unit #5163 W | 2,500 | 47932286 |
| 43760 | Mar 6, 1979 | Mar 6, 1979 | Basic Earth Science Systems,inc. | Webb | West Cole Unit #5151 W | 2,500 | 47932287 |
| 30607 | Aug 14, 1978 | Aug 14, 1978 | Basic Earth Science Systems,inc. | Webb | Cantu-Valdez #1 | 6,815 | 47932111 |