| 491122 | Jan 18, 2000 | Jan 18, 2000 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1512 | 6,500 | 10538327 |
| 491121 | Jan 18, 2000 | Jan 18, 2000 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1415 | 6,500 | 10538328 |
| 481650 | Feb 1, 1999 | Feb 1, 1999 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #111 | 6,500 | 10538239 |
| 481738 | Jan 6, 1999 | Jan 6, 1999 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #16 | 6,500 | 10538238 |
| 481741 | Jan 4, 1999 | Jan 4, 1999 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #18 | 6,500 | 10538236 |
| 481739 | Jan 4, 1999 | Jan 4, 1999 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #17 | 6,500 | 10538235 |
| 481737 | Jan 4, 1999 | Jan 4, 1999 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "13" #11 | 6,500 | 10538234 |
| 481653 | Dec 31, 1998 | Dec 31, 1998 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1511 | 6,500 | 10538231 |
| 481652 | Dec 28, 1998 | Dec 28, 1998 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1414 | 6,500 | 10538232 |
| 481651 | Dec 28, 1998 | Dec 28, 1998 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1413 | 6,500 | 10538233 |
| 479469 | Sep 18, 1998 | Sep 18, 1998 | Tamarack Petroleum Company, Inc. | Reagan | Halff "16" #1 | 8,340 | 38330727 |
| 469937 | May 12, 1998 | May 12, 1998 | Tamarack Petroleum Company, Inc. | Lavaca | Crawford #1 | 3,300 | 28532550 |
| 474769 | Mar 30, 1998 | Mar 30, 1998 | Tamarack Petroleum Company, Inc. | Upton | Halff -C- #1 | 7,850 | 46131616 |
| 472569 | Jan 29, 1998 | Jan 29, 1998 | Tamarack Petroleum Company, Inc. | Lavaca | Hier-Ton #1A | 5,500 | 28532571 |
| 471370 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1412 | 6,800 | 10537986 |
| 471369 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #110 | 6,800 | 10537980 |
| 471368 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1510 | 6,800 | 10537981 |
| 471368Amendment | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1510 | 6,800 | 10537981 |
| 471367 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "13" #9 | 6,800 | 10537987 |
| 471366 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #12 | 6,800 | 10537983 |
| 471366Amendment | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #12 | 6,800 | 10537983 |
| 471365 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #804 | 6,800 | 10537984 |
| 471364 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #109 | 6,800 | 10537985 |
| 471363 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1411 | 6,800 | 10537982 |
| 471362 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #14 | 6,800 | 10537979 |
| 471361 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #11 | 6,800 | 10537978 |
| 471361Amendment | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #11 | 6,550 | 10537978 |
| 471361Amendment | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #11 | 6,550 | 10537978 |
| 471360 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #15 | 6,800 | 10537977 |
| 471359 | Dec 17, 1997 | Dec 17, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #13 | 6,800 | 10537976 |
| 462018 | May 16, 1997 | May 16, 1997 | Tamarack Petroleum Company, Inc. | Lavaca | Miller #1 | 3,700 | 28532486 |
| 462018Amendment | May 16, 1997 | May 16, 1997 | Tamarack Petroleum Company, Inc. | Lavaca | Miller #1 | 3,700 | 28532486 |
| 462018Amendment | May 16, 1997 | May 16, 1997 | Tamarack Petroleum Company, Inc. | Lavaca | Miller #1 | 3,700 | 28532486 |
| 461188 | Apr 17, 1997 | Apr 17, 1997 | Tamarack Petroleum Company, Inc. | Lavaca | Hier-Ton #1 | 5,500 | 28532327 |
| 457003 | Jan 8, 1997 | Jan 8, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1509 | 6,800 | 10537527 |
| 457002 | Jan 8, 1997 | Jan 8, 1997 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1508 | 6,800 | 10537528 |
| 456726 | Dec 27, 1996 | Dec 27, 1996 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #10 | 6,800 | 10537517 |
| 456725 | Dec 27, 1996 | Dec 27, 1996 | Tamarack Petroleum Company, Inc. | Crockett | Sutton "1" #108 | 6,800 | 10537518 |
| 456723 | Dec 27, 1996 | Dec 27, 1996 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1410 | 6,800 | 10537519 |
| 456722 | Dec 27, 1996 | Dec 27, 1996 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #9 | 6,800 | 10537516 |
| 455336Amendment | Nov 20, 1996 | Nov 20, 1996 | Tamarack Petroleum Company, Inc. | Reagan | Halff Estate A #1 | 7,760 | 38301916 |
| 447636 | Apr 30, 1996 | Apr 30, 1996 | Tamarack Petroleum Company, Inc. | Reagan | Clark, Gladys #1 | 8,325 | 38330749 |
| 447008 | Apr 15, 1996 | Apr 15, 1996 | Tamarack Petroleum Company, Inc. | Reagan | Halff -A- #2 | 8,345 | 38330834 |
| 446820 | Apr 10, 1996 | Apr 10, 1996 | Tamarack Petroleum Company, Inc. | Reagan | Halff -32- #1 | 8,395 | 38330721 |
| 442229 | Dec 8, 1995 | Dec 8, 1995 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1408 | 6,500 | 10537111 |
| 442232 | Dec 4, 1995 | Dec 4, 1995 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1507 | 6,500 | 10537109 |
| 442231 | Dec 1, 1995 | Dec 1, 1995 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1506 | 6,500 | 10537108 |
| 442233 | Nov 29, 1995 | Nov 29, 1995 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #8 | 6,500 | 10537110 |
| 442230 | Nov 29, 1995 | Nov 29, 1995 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1409 | 6,500 | 10537107 |
| 442228 | Nov 29, 1995 | Nov 29, 1995 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #107 | 6,500 | 10537106 |
| 439941 | Sep 20, 1995 | Sep 20, 1995 | Tamarack Petroleum Company, Inc. | Lavaca | Hier-Ton #1 | 6,000 | 28532327 |
| 439941Amendment | Sep 20, 1995 | Sep 20, 1995 | Tamarack Petroleum Company, Inc. | Lavaca | Hier-Ton #1 | 5,500 | 28532327 |
| 439941Amendment | Sep 20, 1995 | Sep 20, 1995 | Tamarack Petroleum Company, Inc. | Lavaca | Hier-Ton #1 | 5,500 | 28532327 |
| 439497 | Sep 6, 1995 | Sep 6, 1995 | Tamarack Petroleum Company, Inc. | Colorado | Agnello #1 | 6,000 | 08931945 |
| 437211 | Jun 23, 1995 | Jun 23, 1995 | Tamarack Petroleum Company, Inc. | Goliad | Hatty Swickheimer Estate #1 | 6,500 | 17532846 |
| 432422 | Mar 6, 1995 | Mar 6, 1995 | Tamarack Petroleum Company, Inc. | Anderson | Matthews Unit #1 | 20,000 | 00132212 |
| 426433 | Aug 3, 1994 | Aug 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1505 | 6,500 | 10536581 |
| 426431 | Aug 3, 1994 | Aug 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #106 | 6,500 | 10536582 |
| 426430 | Aug 3, 1994 | Aug 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1406 | 6,500 | 10536583 |
| 426430Amendment | Aug 3, 1994 | Aug 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1406 | 6,500 | 10536583 |
| 426429 | Aug 2, 1994 | Aug 2, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton #1407 | 6,500 | 10536584 |
| 426284 | Jul 29, 1994 | Jul 29, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "13" #8 | 6,500 | 10536580 |
| 426285 | Jul 28, 1994 | Jul 28, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #7 | 6,500 | 10536579 |
| 419916 | Jan 5, 1994 | Jan 5, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "13" #7 | 6,500 | 10536456 |
| 419916Amendment | Jan 5, 1994 | Jan 5, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "13" #7 | 6,500 | 10536456 |
| 419856 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "18" #6 | 6,500 | 10536455 |
| 419855 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton "1" #4 | 6,500 | 10536454 |
| 419854 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton "8" #3 | 6,500 | 10536452 |
| 419853 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton "15" #4 | 6,500 | 10536451 |
| 419852 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton "14" #5 | 6,500 | 10536450 |
| 419851 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton "1" #5 | 6,500 | 10536449 |
| 419850 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Sutton "15" #3 | 6,500 | 10536448 |
| 419849 | Jan 3, 1994 | Jan 3, 1994 | Tamarack Petroleum Company, Inc. | Crockett | Hoover "13" A #6 | 6,500 | 10536453 |
| 409154 | Feb 19, 1993 | Feb 19, 1993 | Tamarack Petroleum Company, Inc. | Reagan | Mitchell #2 | 8,700 | 38334205 |
| 407995 | Jan 8, 1993 | Jan 8, 1993 | Tamarack Petroleum Company, Inc. | Rusk | Penney, James #1 | 9,000 | 40132448 |
| 407995Amendment | Jan 8, 1993 | Jan 8, 1993 | Tamarack Petroleum Company, Inc. | Rusk | Penney, James #1 | 9,300 | 40132448 |
| 407911 | Jan 8, 1993 | Jan 8, 1993 | Tamarack Petroleum Company, Inc. | Andrews | Herring SWD #1 | 13,690 | 00337020 |
| 406035 | Nov 17, 1992 | Nov 17, 1992 | Tamarack Petroleum Company, Inc. | Frio | Medina SWD #1 | 5,314 | 16330189 |
| 404835 | Oct 16, 1992 | Oct 16, 1992 | Tamarack Petroleum Company, Inc. | Frio | Mills Unit #1H | 5,500 | 16330294 |
| 404835Amendment | Oct 16, 1992 | Oct 16, 1992 | Tamarack Petroleum Company, Inc. | Frio | Mills Unit #1H | 5,595 | 16330294 |
| 402493 | Aug 21, 1992 | Aug 21, 1992 | Tamarack Petroleum Company, Inc. | Andrews | University 49 #1 | 12,550 | 00337116 |
| 393327 | Oct 29, 1991 | Oct 29, 1991 | Tamarack Petroleum Company, Inc. | Andrews | University 37 #1 | 12,500 | 00337016 |
| 392397 | Oct 3, 1991 | Oct 3, 1991 | Tamarack Petroleum Company, Inc. | Frio | O'Connor SWD #1 | 4,145 | 16330163 |
| 391645 | Sep 17, 1991 | Sep 17, 1991 | Tamarack Petroleum Company, Inc. | Lubbock | Harrison, West Lee Water Supply #2 | 1,500 | 30331219 |
| 388194 | Jun 12, 1991 | Jun 12, 1991 | Tamarack Petroleum Company, Inc. | Wood | Helton, V.W. #1 | 7,700 | 49931741 |
| 385487 | Mar 8, 1991 | Mar 8, 1991 | Tamarack Petroleum Company, Inc. | Frio | Voss "D" #1H | 5,500 | 16333027 |
| 381727 | Dec 12, 1990 | Dec 12, 1990 | Tamarack Petroleum Company, Inc. | Frio | Newsom "C" #1H | 5,132 | 16332933 |
| 381761 | Nov 30, 1990 | Nov 30, 1990 | Tamarack Petroleum Company, Inc. | Freestone | Tedrow #1 | 11,500 | 16131150 |
| 380784 | Nov 14, 1990 | Nov 14, 1990 | Tamarack Petroleum Company, Inc. | Frio | Toalson "C" #1H | 5,470 | 16332911 |
| 379040 | Oct 15, 1990 | Oct 15, 1990 | Tamarack Petroleum Company, Inc. | Frio | Clyde #1H | 5,730 | 16332874 |
| 378236 | Sep 20, 1990 | Sep 20, 1990 | Tamarack Petroleum Company, Inc. | Frio | McKinney-O'Connor Unit #1H | 5,100 | 16332853 |
| 378174 | Sep 19, 1990 | Sep 19, 1990 | Tamarack Petroleum Company, Inc. | Smith | Roberson Unit #1 | 8,700 | 42331291 |
| 377111 | Aug 24, 1990 | Aug 24, 1990 | Tamarack Petroleum Company, Inc. | Frio | Voss #C 1H | 5,440 | 16332822 |
| 375002 | Jul 30, 1990 | Jul 30, 1990 | Tamarack Petroleum Company, Inc. | Lubbock | West Lee Harrison Unit #27 | 5,150 | 30331199 |
| 375004 | Jul 27, 1990 | Jul 27, 1990 | Tamarack Petroleum Company, Inc. | Lubbock | West Lee Harrison Unit #28 | 5,150 | 30331198 |
| 375490 | Jul 25, 1990 | Jul 25, 1990 | Tamarack Petroleum Company, Inc. | Frio | McKinley "A" #1H | 5,950 | 16332778 |
| 375001 | Jul 5, 1990 | Jul 5, 1990 | Tamarack Petroleum Company, Inc. | Lubbock | West Lee Harrison Unit #22X | 5,150 | 30331197 |
| 374346 | Jun 18, 1990 | Jun 18, 1990 | Tamarack Petroleum Company, Inc. | Frio | Toalson "B" #1H | 5,850 | 16332748 |
| 368343 | Jan 9, 1990 | Jan 9, 1990 | Tamarack Petroleum Company, Inc. | Leon | Douthitt #1 | 9,800 | 28931049 |
| 367550 | Dec 12, 1989 | Dec 12, 1989 | Tamarack Petroleum Company, Inc. | Frio | Mills, J. C. "C" #1 | 6,000 | 16330159 |