| 529724 | Mar 19, 2003 | Mar 19, 2003 | Houston Exploration Company, The | Zapata | Asche #72 | 10,500 | 50534692 |
| 529723 | Mar 19, 2003 | Mar 19, 2003 | Houston Exploration Company, The | Zapata | Asche #71 | 10,500 | 50534691 |
| 529723Amendment | Mar 19, 2003 | Mar 19, 2003 | Houston Exploration Company, The | Zapata | Asche #71 | 13,000 | 50534691 |
| 529722 | Mar 19, 2003 | Mar 19, 2003 | Houston Exploration Company, The | Zapata | Asche #70 | 10,500 | 50534690 |
| 529721 | Mar 19, 2003 | Mar 19, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #50 | 9,500 | 47938365 |
| 529180 | Mar 7, 2003 | Mar 7, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #48 | 9,500 | 47938352 |
| 529184 | Mar 6, 2003 | Mar 6, 2003 | Houston Exploration Company, The | Zapata | Leonardo #36 | 10,700 | 50534685 |
| 529183 | Mar 6, 2003 | Mar 6, 2003 | Houston Exploration Company, The | Zapata | Leonardo #35 | 13,500 | 50534684 |
| 529182 | Mar 6, 2003 | Mar 6, 2003 | Houston Exploration Company, The | Zapata | Leonardo #34 | 10,500 | 50534683 |
| 529181 | Mar 6, 2003 | Mar 6, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #49 | 9,500 | 47938353 |
| 529012 | Feb 28, 2003 | Feb 28, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #47 | 9,500 | 47938343 |
| 528496 | Feb 24, 2003 | Feb 24, 2003 | Houston Exploration Company, The | Zapata | Villareal, Jacoba G. #6 | 14,500 | 50534671 |
| 528496Amendment | Feb 24, 2003 | Feb 24, 2003 | Houston Exploration Company, The | Zapata | Jacoba #6 | 14,500 | 50534671 |
| 528497 | Feb 20, 2003 | Feb 20, 2003 | Houston Exploration Company, The | Zapata | Haynes #23 | 14,500 | 50534672 |
| 528574 | Feb 19, 2003 | Feb 19, 2003 | Houston Exploration Company, The | Zapata | Asche #69 | 13,500 | 50534673 |
| 528412 | Feb 13, 2003 | Feb 13, 2003 | Houston Exploration Company, The | Webb | Hubberd, William "C2" #60 | 9,200 | 47938333 |
| 528180 | Feb 13, 2003 | Feb 13, 2003 | Houston Exploration Company, The | Webb | Hubberd, William -D- #17 | 7,000 | 47932357 |
| 528180Amendment | Feb 13, 2003 | Feb 13, 2003 | Houston Exploration Company, The | Webb | Hubberd, William -D- #17 | 7,250 | 47932357 |
| 528227 | Feb 10, 2003 | Feb 10, 2003 | Houston Exploration Company, The | Zapata | Haynes #22 | 14,700 | 50534665 |
| 528218 | Feb 7, 2003 | Feb 7, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #46 | 9,400 | 47938326 |
| 528188 | Feb 7, 2003 | Feb 7, 2003 | Houston Exploration Company, The | Zapata | Flores, L. G. #40 | 14,500 | 50534664 |
| 527046 | Jan 29, 2003 | Jan 29, 2003 | Houston Exploration Company, The | Jim Hogg | Perez, F. "D" #1 | 16,000 | 24732141 |
| 527718 | Jan 27, 2003 | Jan 27, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #45 | 9,400 | 47938317 |
| 527718Amendment | Jan 27, 2003 | Jan 27, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #45 | 9,400 | 47938317 |
| 527485 | Jan 24, 2003 | Jan 24, 2003 | Houston Exploration Company, The | Webb | Hubberd, Marie S. Trusts #59 | 10,700 | 47938311 |
| 527433 | Jan 17, 2003 | Jan 17, 2003 | Houston Exploration Company, The | Zapata | Haynes #21 | 14,500 | 50534651 |
| 527433Amendment | Jan 17, 2003 | Jan 17, 2003 | Houston Exploration Company, The | Zapata | Haynes #21 | 14,500 | 50534651 |
| 527348 | Jan 16, 2003 | Jan 16, 2003 | Houston Exploration Company, The | Webb | Alexander, Charles #43 | 9,500 | 47938309 |
| 526966 | Jan 6, 2003 | Jan 6, 2003 | Houston Exploration Company, The | Zapata | Porras Gas Unit #6 | 13,700 | 50534646 |
| 526598 | Dec 20, 2002 | Dec 20, 2002 | Houston Exploration Company, The | Webb | Schwarz, N.C. #1 | 7,750 | 47938287 |
| 526228 | Dec 10, 2002 | Dec 10, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #44 | 9,500 | 47938280 |
| 526228Amendment | Dec 10, 2002 | Dec 10, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #44 | 9,500 | 47938280 |
| 526053 | Dec 4, 2002 | Dec 4, 2002 | Houston Exploration Company, The | Zapata | Yzaguirre - Leo Gas Unit #11 | 14,600 | 50534631 |
| 526053Amendment | Dec 4, 2002 | Dec 4, 2002 | Houston Exploration Company, The | Zapata | Yzaguirre - Leo Gas Unit #11 | 14,600 | 50534631 |
| 526052 | Dec 4, 2002 | Dec 4, 2002 | Houston Exploration Company, The | Zapata | Haynes #20 | 14,500 | 50534632 |
| 526051 | Dec 4, 2002 | Dec 4, 2002 | Houston Exploration Company, The | Zapata | Asche #68 | 13,500 | 50534633 |
| 526050 | Dec 4, 2002 | Dec 4, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #42 | 9,200 | 47938276 |
| 525843 | Nov 25, 2002 | Nov 25, 2002 | Houston Exploration Company, The | Webb | Martin - Volz #3 | 9,200 | 47938273 |
| 524829 | Nov 21, 2002 | Nov 21, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #17R | 14,000 | 50533242 |
| 525688 | Nov 20, 2002 | Nov 20, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #41 | 9,500 | 47938267 |
| 525170 | Nov 1, 2002 | Nov 1, 2002 | Houston Exploration Company, The | Zapata | Haynes #19 | 14,500 | 50534626 |
| 525145 | Nov 1, 2002 | Nov 1, 2002 | Houston Exploration Company, The | Zapata | Asche #67 | 13,600 | 50534625 |
| 525145Amendment | Nov 1, 2002 | Nov 1, 2002 | Houston Exploration Company, The | Zapata | Asche #67 | 13,600 | 50534625 |
| 525033 | Nov 1, 2002 | Nov 1, 2002 | Houston Exploration Company, The | Zapata | Yzaguirre-Leo Gas Unit #10 | 14,200 | 50534621 |
| 525033Amendment | Nov 1, 2002 | Nov 1, 2002 | Houston Exploration Company, The | Zapata | Yzaguirre-Leo Gas Unit #10 | 14,200 | 50534621 |
| 524524 | Oct 11, 2002 | Oct 11, 2002 | Houston Exploration Company, The | Webb | Macmahon, P. A. #1 | 8,300 | 47938233 |
| 524504 | Oct 10, 2002 | Oct 10, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #40 | 9,150 | 47938231 |
| 524503 | Oct 10, 2002 | Oct 10, 2002 | Houston Exploration Company, The | Webb | Mashi #2 | 13,500 | 47938230 |
| 524353 | Oct 4, 2002 | Oct 4, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #39 | 13,600 | 50534615 |
| 523915 | Sep 24, 2002 | Sep 24, 2002 | Houston Exploration Company, The | Zapata | Garza, L. #7 | 13,830 | 50534613 |
| 523930 | Sep 23, 2002 | Sep 23, 2002 | Houston Exploration Company, The | Zapata | Haynes #18 | 14,500 | 50534612 |
| 523930Amendment | Sep 23, 2002 | Sep 23, 2002 | Houston Exploration Company, The | Zapata | Haynes #18 | 14,500 | 50534612 |
| 523854 | Sep 20, 2002 | Sep 20, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #39 | 9,500 | 47938219 |
| 523838 | Sep 19, 2002 | Sep 19, 2002 | Houston Exploration Company, The | Zapata | Garza, A. #16 | 10,200 | 50534611 |
| 523838Amendment | Sep 19, 2002 | Sep 19, 2002 | Houston Exploration Company, The | Zapata | Garza, A. #16 | 10,200 | 50534611 |
| 523643 | Sep 18, 2002 | Sep 18, 2002 | Houston Exploration Company, The | Webb | Martin-Volz #2 | 8,800 | 47938216 |
| 523642 | Sep 18, 2002 | Sep 18, 2002 | Houston Exploration Company, The | Webb | Martin-Volz #1 | 8,800 | 47938215 |
| 523614 | Sep 12, 2002 | Sep 12, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #38 | 9,500 | 47938214 |
| 523229 | Aug 29, 2002 | Aug 29, 2002 | Houston Exploration Company, The | Zapata | J. O. D. #17 | 13,500 | 50534602 |
| 523115 | Aug 26, 2002 | Aug 26, 2002 | Houston Exploration Company, The | Zapata | Alfonso #25 | 10,320 | 50534601 |
| 523115Amendment | Aug 26, 2002 | Aug 26, 2002 | Houston Exploration Company, The | Zapata | Alfonso #25 | 10,320 | 50534601 |
| 522874 | Aug 20, 2002 | Aug 20, 2002 | Houston Exploration Company, The | Hidalgo | Guerra, D. V. Trust #1 | 11,500 | 21533012 |
| 522806 | Aug 15, 2002 | Aug 15, 2002 | Houston Exploration Company, The | Zapata | Villareal, Jacoba G. #5 | 14,600 | 50534599 |
| 522806Amendment | Aug 15, 2002 | Aug 15, 2002 | Houston Exploration Company, The | Zapata | Villareal, Jacoba G. #5 | 14,600 | 50534599 |
| 522648 | Aug 9, 2002 | Aug 9, 2002 | Houston Exploration Company, The | Webb | Hubberd, William "B2" #58 | 8,950 | 47938187 |
| 522521 | Aug 6, 2002 | Aug 6, 2002 | Houston Exploration Company, The | Zapata | Garza "D" G. U. 1 #3 | 14,200 | 50534596 |
| 522521Amendment | Aug 6, 2002 | Aug 6, 2002 | Houston Exploration Company, The | Zapata | Garza "D" G. U. 1 #3 | 14,200 | 50534596 |
| 522043 | Jul 22, 2002 | Jul 22, 2002 | Houston Exploration Company, The | Webb | Hubberd, William "A2" #57 | 9,400 | 47938171 |
| 522043Amendment | Jul 22, 2002 | Jul 22, 2002 | Houston Exploration Company, The | Webb | Hubberd, William "A2" #57ST | 9,000 | 47938171 |
| 521815 | Jul 12, 2002 | Jul 12, 2002 | Houston Exploration Company, The | Zapata | Alfonso #24 | 10,320 | 50534582 |
| 521815Amendment | Jul 12, 2002 | Jul 12, 2002 | Houston Exploration Company, The | Zapata | Alfonso #24 | 10,320 | 50534582 |
| 521764 | Jul 11, 2002 | Jul 11, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #38 | 14,500 | 50534580 |
| 521608 | Jul 8, 2002 | Jul 8, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #34 | 9,150 | 47938155 |
| 521607 | Jul 8, 2002 | Jul 8, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #37 | 9,150 | 47938156 |
| 521589 | Jul 5, 2002 | Jul 5, 2002 | Houston Exploration Company, The | Webb | Hubberd, William "B" #5602 | 9,200 | 47938154 |
| 521455 | Jul 1, 2002 | Jul 1, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #36 | 9,400 | 47938153 |
| 521454 | Jul 1, 2002 | Jul 1, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #33 | 9,400 | 47938152 |
| 521453 | Jul 1, 2002 | Jul 1, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #35 | 9,500 | 47938151 |
| 521453Amendment | Jul 1, 2002 | Jul 1, 2002 | Houston Exploration Company, The | Webb | Alexander, Charles #35 | 8,935 | 47938151 |
| 521204 | Jun 20, 2002 | Jun 20, 2002 | Houston Exploration Company, The | Webb | Hubberd "C-1" #55 | 9,400 | 47938143 |
| 521108 | Jun 19, 2002 | Jun 19, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #37 | 14,600 | 50534565 |
| 521108Amendment | Jun 19, 2002 | Jun 19, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #37 | 14,600 | 50534565 |
| 520696 | Jun 6, 2002 | Jun 6, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #36 | 14,500 | 50534555 |
| 520671 | Jun 6, 2002 | Jun 6, 2002 | Houston Exploration Company, The | Zapata | Alfonso #23 | 10,320 | 50534554 |
| 520671Amendment | Jun 6, 2002 | Jun 6, 2002 | Houston Exploration Company, The | Zapata | Alfonso #23 | 10,320 | 50534554 |
| 520453 | May 29, 2002 | May 29, 2002 | Houston Exploration Company, The | Zapata | Alfonso #22 | 10,320 | 50534547 |
| 520453Amendment | May 29, 2002 | May 29, 2002 | Houston Exploration Company, The | Zapata | Alfonso #22 | 10,320 | 50534547 |
| 520452 | May 29, 2002 | May 29, 2002 | Houston Exploration Company, The | Webb | Mashi-640 #1 | 14,500 | 47938127 |
| 520451 | May 29, 2002 | May 29, 2002 | Houston Exploration Company, The | Webb | Hubberd "C3" #53 | 9,600 | 47938126 |
| 520450 | May 29, 2002 | May 29, 2002 | Houston Exploration Company, The | Webb | Hubberd "B2" #54 | 9,200 | 47938125 |
| 520327 | May 24, 2002 | May 24, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #35 | 14,600 | 50534546 |
| 519894 | May 10, 2002 | May 10, 2002 | Houston Exploration Company, The | Webb | Hubberd "D-4" #52 | 9,900 | 47938110 |
| 518867 | May 2, 2002 | May 2, 2002 | Houston Exploration Company, The | Zapata | Flores, L. G. #34 | 14,800 | 50534521 |
| 519503 | Apr 29, 2002 | Apr 29, 2002 | Houston Exploration Company, The | Zapata | Munoz #4 | 14,600 | 50534536 |
| 519503Amendment | Apr 29, 2002 | Apr 29, 2002 | Houston Exploration Company, The | Zapata | Munoz #4 | 14,600 | 50534536 |
| 519502 | Apr 29, 2002 | Apr 29, 2002 | Houston Exploration Company, The | Webb | Hubberd #51 | 10,400 | 47938102 |
| 519177 | Apr 17, 2002 | Apr 17, 2002 | Houston Exploration Company, The | Zapata | Garza, Lauro #3 | 14,200 | 50534530 |
| 519058 | Apr 12, 2002 | Apr 12, 2002 | Houston Exploration Company, The | Webb | Hubberd, William "D" #49 | 9,400 | 47938089 |
| 519057 | Apr 12, 2002 | Apr 12, 2002 | Houston Exploration Company, The | Webb | Hubberd, Marie S. Trust #50 | 10,200 | 47938088 |
| 518518 | Mar 25, 2002 | Mar 25, 2002 | Houston Exploration Company, The | Webb | Hubberd, Marie S. Trusts #47 | 11,000 | 47938074 |