| 524689Amendment | Oct 16, 2002 | Oct 16, 2002 | Noble Energy Inc | Richardson #1 | 16,050 | 36130795 |
| 524688 | Oct 16, 2002 | Oct 16, 2002 | Samedan Oil Corporation | Stark Foundation #1 | 14,560 | 36130796 |
| 524688Amendment | Oct 16, 2002 | Oct 16, 2002 | Noble Energy Inc | Stark Foundation #1 | 14,560 | 36130796 |
| 522401 | Aug 1, 2002 | Aug 1, 2002 | Samedan Oil Corporation | Red Gas Unit #2 | 9,850 | 36130794 |
| 520877 | Jun 11, 2002 | Jun 11, 2002 | Samedan Oil Corporation | Hollinhead Unit #1 | 9,100 | 36130793 |
| 519675 | May 3, 2002 | May 3, 2002 | National Energy Group, Inc. | State Tract 9 #1 | 11,600 | 36130792 |
| 519652 | May 3, 2002 | May 3, 2002 | Samedan Oil Corporation | Mil-Vid Williams Unit #1 | 9,750 | 36130791 |
| 519003 | Apr 11, 2002 | Apr 11, 2002 | Star of Texas Energy Srvs, Inc. | BP Amoco #1 | 11,000 | 36130790 |
| 518684 | Mar 29, 2002 | Mar 29, 2002 | Samedan Oil Corporation | Donner #1R | 14,100 | 36130656 |
| 518684Amendment | Mar 29, 2002 | Mar 29, 2002 | Samedan Oil Corporation | Donner #1R | 14,100 | 36130656 |
| 516230 | Dec 18, 2001 | Dec 18, 2001 | Lake Ronel Oil Company | Stephenson #4 | 10,500 | 36130789 |
| 516039 | Dec 11, 2001 | Dec 11, 2001 | Amerada Hess Corporation | Mil-Vid #10 | 14,100 | 36130642 |
| 515294 | Nov 13, 2001 | Nov 13, 2001 | Duncan Oil,inc - | Brown, E. W., Jr. Properties #1 | 8,700 | 36130788 |
| 514359 | Oct 10, 2001 | Oct 10, 2001 | Kelley Oil Corporation | Bowlin, Hannah #1 | 14,500 | 36130787 |
| 513850 | Oct 2, 2001 | Oct 2, 2001 | Lake Ronel Oil Company | Stephenson #3 | 10,500 | 36130786 |
| 513400 | Sep 6, 2001 | Sep 6, 2001 | National Energy Group, Inc. | State Tract 8 #1 | 11,600 | 36130785 |
| 509172 | May 24, 2001 | May 24, 2001 | Harper, Wayne | Stark #17 | 6,500 | 36130782 |
| 509171 | May 24, 2001 | May 24, 2001 | Harper, Wayne | Stark #16 | 5,000 | 36130784 |
| 507798 | Apr 16, 2001 | Apr 16, 2001 | Lake Ronel Oil Company | John W. Stephenson Gas Unit #2 | 10,900 | 36130783 |
| 507798Amendment | Apr 16, 2001 | Apr 16, 2001 | Lake Ronel Oil Company | John W. Stephenson Gas Unit #2 | 10,900 | 36130783 |
| 506254 | Mar 9, 2001 | Mar 9, 2001 | Enervest Operating, L.L.C. | Port Neches (Marg. Area 1) #42 | 6,633 | 36101394 |
| 505859 | Feb 27, 2001 | Feb 27, 2001 | Ballard Exploration Company,inc. | Fina "A" #1 | 8,500 | 36130781 |
| 505859Amendment | Feb 27, 2001 | Feb 27, 2001 | Ballard Exploration Company,inc. | B Red, Inc. #1 | 8,300 | 36130781 |
| 505601 | Feb 21, 2001 | Feb 21, 2001 | Lake Ronel Oil Company | Donner #1 | 10,500 | 36130780 |
| 505601Amendment | Feb 21, 2001 | Feb 21, 2001 | Lake Ronel Oil Company | Donner #1 | 10,500 | 36130780 |
| 504742 | Jan 30, 2001 | Jan 30, 2001 | Lake Ronel Oil Company | Stephenson #1 | 10,500 | 36130779 |
| 498660 | Aug 24, 2000 | Aug 24, 2000 | Lake Ronel Oil Company | Stark, Nelda C. #2 | 10,500 | 36130778 |
| 498660Amendment | Aug 24, 2000 | Aug 24, 2000 | Lake Ronel Oil Company | Stark, Nelda C. #2 | 10,000 | 36130778 |
| 498426 | Aug 14, 2000 | Aug 14, 2000 | Horizon Exploration Company | Powell Lumber #1 | 10,200 | 36130777 |
| 498352 | Aug 10, 2000 | Aug 10, 2000 | Lake Ronel Oil Company | Cormier, Paul #1 | 5,900 | 36130776 |
| 498352Amendment | Aug 10, 2000 | Aug 10, 2000 | Lake Ronel Oil Company | Cormier, Paul #1 | 5,900 | 36130776 |
| 497394 | Jul 19, 2000 | Jul 19, 2000 | Lake Ronel Oil Company | Vaughn #1 | 10,500 | 36130775 |
| 496979 | Jul 7, 2000 | Jul 7, 2000 | Wagner Oil Company | Morgans Bluff Hackberry Unit #P 13 | 9,000 | 36130598 |
| 493897 | May 30, 2000 | May 30, 2000 | Ballard Exploration Company,inc. | Fina Oil & Chemical Company #2ST | 12,200 | 36130751 |
| 494964 | May 15, 2000 | May 15, 2000 | Brown, George R. Partnership,the | Dubuisson-Deking #1 | 17,000 | 36130774 |
| 495017 | May 12, 2000 | May 12, 2000 | Ballard Exploration Company,inc. | Exxon #1 | 11,772 | 36130725 |
| 493873 | Apr 10, 2000 | Apr 10, 2000 | Lake Ronel Oil Company | Stark, Nelda C. #1 | 10,000 | 36130773 |
| 493873Amendment | Apr 10, 2000 | Apr 10, 2000 | Lake Ronel Oil Company | Stark, Nelda C. #1 | 10,000 | 36130773 |
| 493062 | Mar 17, 2000 | Mar 17, 2000 | Pogo Producing Co. | State Lease 15828 #1 | 11,715 | 36130772 |
| 490727 | Dec 29, 1999 | Dec 29, 1999 | Aspect Resources LLC | Marsh #1 | 9,300 | 36130771 |
| 490703 | Dec 29, 1999 | Dec 29, 1999 | Tri-C Resources, Inc. | Koster-Vastar #2 | 8,300 | 36130770 |
| 490703Amendment | Dec 29, 1999 | Dec 29, 1999 | Tri-C Resources, Inc. | Koster-Vastar #2 | 8,300 | 36130770 |
| 487910 | Nov 4, 1999 | Nov 4, 1999 | Amerada Hess Corporation | Mil Vid #10 | 14,100 | 36130642 |
| 488976 | Oct 29, 1999 | Oct 29, 1999 | Brown, George R. Partnership,the | Northstar #1 | 11,500 | 36130769 |
| 488330 | Oct 8, 1999 | Oct 8, 1999 | Energy Development Corp. | Brown Stark #2 | 15,800 | 36130768 |
| 488330Amendment | Oct 8, 1999 | Oct 8, 1999 | Energy Development Corp. | Brown Stark #2 | 15,800 | 36130768 |
| 486957 | Aug 26, 1999 | Aug 26, 1999 | Tri-C Resources, Inc. | Williams Unit #1 | 8,500 | 36130767 |
| 486709 | Aug 16, 1999 | Aug 16, 1999 | Lake Ronel Oil Company | Winfree #1 | 8,500 | 36130766 |
| 486709Amendment | Aug 16, 1999 | Aug 16, 1999 | Lake Ronel Oil Company | Winfree #1 | 8,500 | 36130766 |
| 486367 | Aug 3, 1999 | Aug 3, 1999 | Lake Ronel Oil Company | Winter #1 | 8,600 | 36130765 |
| 485422 | Jun 24, 1999 | Jun 24, 1999 | Tri-C Resources, Inc. | Brown/Stark #1 | 12,665 | 36130690 |
| 483061 | May 5, 1999 | May 5, 1999 | Lake Ronel Oil Company | Cormier Cow Bayou State #1 | 8,100 | 36130764 |
| 483250 | Mar 12, 1999 | Mar 12, 1999 | Tri-C Resources, Inc. | Perkins Unit #2 | 8,900 | 36130761 |
| 481312 | Dec 7, 1998 | Dec 7, 1998 | Tri-C Resources, Inc. | Perkins/Sholars Heirs #1 | 10,500 | 36130763 |
| 481312Amendment | Dec 7, 1998 | Dec 7, 1998 | Tri-C Resources, Inc. | Perkins/Sholars Heirs #1 | 9,805 | 36130763 |
| 480477 | Oct 27, 1998 | Oct 27, 1998 | Tri-C Resources, Inc. | Vastar Fee #3 | 9,000 | 36130762 |
| 479713 | Sep 25, 1998 | Sep 25, 1998 | Tri-C Resources, Inc. | Perkins Unit #2 | 9,000 | 36130761 |
| 479713Amendment | Sep 25, 1998 | Sep 25, 1998 | Tri-C Resources, Inc. | Perkins Unit #2 | 9,000 | 36130761 |
| 479446 | Sep 15, 1998 | Sep 15, 1998 | Tri-C Resources, Inc. | Perkins #1 | 8,900 | 36130760 |
| 479446Amendment | Sep 15, 1998 | Sep 15, 1998 | Tri-C Resources, Inc. | Perkins #1 | 8,900 | 36130760 |
| 479167 | Aug 31, 1998 | Aug 31, 1998 | Tri-C Resources, Inc. | Vastar Fee Unit #1 | 9,200 | 36130757 |
| 479015 | Aug 28, 1998 | Aug 28, 1998 | Walter Oil & Gas Corporation | Hudson/Sonat Unit #1 | 10,500 | 36130759 |
| 478262 | Jul 24, 1998 | Jul 24, 1998 | Walter Oil & Gas Corporation | Vastar/Sutton Unit #1 | 9,200 | 36130758 |
| 477684 | Jul 2, 1998 | Jul 2, 1998 | Tri-C Resources, Inc. | Vastar Fee #2 | 9,000 | 36130757 |
| 477684Amendment | Jul 2, 1998 | Jul 2, 1998 | Tri-C Resources, Inc. | Vastar Fee #2 | 9,000 | 36130757 |
| 476835 | Jun 3, 1998 | Jun 3, 1998 | Tri-C Resources, Inc. | Starks-Foundation #1 | 8,500 | 36130756 |
| 476215 | May 12, 1998 | May 12, 1998 | Tri-C Resources, Inc. | Starks Foundation #2 | 8,500 | 36130755 |
| 475990 | May 5, 1998 | May 5, 1998 | Fort Apache Energy, Inc. | Bilbo Heirs #1 | 8,600 | 36130754 |
| 475990Amendment | May 5, 1998 | May 5, 1998 | Fort Apache Energy, Inc. | Bilbo Heirs #1 | 8,600 | 36130754 |
| 475824 | Apr 30, 1998 | Apr 30, 1998 | Texaco E & P Inc. | Akers, C.K. #2 | 13,500 | 36130753 |
| 475615 | Apr 24, 1998 | Apr 24, 1998 | Patrick Operating Company Inc(a) | Miller-Vidor #1 | 7,942 | 36130336 |
| 474476 | Mar 18, 1998 | Mar 18, 1998 | Tri-C Resources, Inc. | Manuel, Carl H. #S 3WD | 2,300 | 36130752 |
| 473192 | Feb 25, 1998 | Feb 25, 1998 | Amerada Hess Corporation | Mil Vid #2ST | 13,197 | 36130609 |
| 473325 | Feb 13, 1998 | Feb 13, 1998 | Ballard Exploration Company,inc. | Fina Oil & Chemical Company #2 | 13,500 | 36130751 |
| 473325Amendment | Feb 13, 1998 | Feb 13, 1998 | Ballard Exploration Company,inc. | Fina Oil & Chemical Company #2ST | 13,500 | 36130751 |
| 473325Amendment | Feb 13, 1998 | Feb 13, 1998 | Ballard Exploration Company,inc. | Fina Oil & Chemical Company #2ST | 12,837 | 36130751 |
| 472278 | Jan 15, 1998 | Jan 15, 1998 | Union Oil Company of California | Johnson, Sid #1 | 9,215 | 36130733 |
| 464848 | Nov 19, 1997 | Nov 19, 1997 | CBN Operating Corp. | Orange Co. Dev. Co. "UA" #1 | 10,357 | 36130448 |
| 469661 | Nov 4, 1997 | Nov 4, 1997 | Union Oil Company of California | Manuel Heirs #1 | 8,752 | 36130747 |
| 469661Amendment | Nov 4, 1997 | Nov 4, 1997 | Union Oil Company of California | Manuel Heirs #1 | 8,752 | 36130747 |
| 469661Amendment | Nov 4, 1997 | Nov 4, 1997 | Union Oil Company of California | Manuel Heirs #1 | 8,752 | 36130747 |
| 469661Amendment | Nov 4, 1997 | Nov 4, 1997 | Union Oil Company of California | Manuel Heirs #1 | 8,752 | 36130747 |
| 468091 | Oct 15, 1997 | Oct 15, 1997 | Neumin Production Company | State Lease 15155 #1 | 11,500 | 36130749 |
| 468160 | Oct 6, 1997 | Oct 6, 1997 | Brown, George R. Partnership,the | Saenger #15 | 11,000 | 36130748 |
| 468160Amendment | Oct 6, 1997 | Oct 6, 1997 | Brown, George R. Partnership,the | Saenger #15 | 11,000 | 36130748 |
| 468161 | Sep 29, 1997 | Sep 29, 1997 | Union Oil Company of California | Bilbo Heirs #1 | 8,600 | 36130747 |
| 464361 | Jun 27, 1997 | Jun 27, 1997 | Union Oil Company of California | Johnson, Sid #1 | 9,215 | 36130733 |
| 464312 | Jun 27, 1997 | Jun 27, 1997 | Texaco E & P Inc. | J.V. Polk "B" O/A #46 | 9,500 | 36130746 |
| 457493 | Jun 26, 1997 | Jun 26, 1997 | U.S. Department of Energy | U.S. Department of Energy #1 | 300 | 36130739 |
| 464011 | Jun 19, 1997 | Jun 19, 1997 | Nuevo Energy Company | Stark Foundation #1 | 12,800 | 36130744 |
| 463978 | Jun 19, 1997 | Jun 19, 1997 | Texaco E & P Inc. | J. V. Polk "a" NCT-2 #22 | 9,500 | 36130745 |
| 463611 | Jun 11, 1997 | Jun 11, 1997 | Texaco E & P Inc. | Polk-Kuhn-Glass #11 | 9,500 | 36130743 |
| 462060 | May 16, 1997 | May 16, 1997 | Texaco E & P Inc. | Polk, J. V. "B" O/A #44 | 9,500 | 36130741 |
| 462332 | May 13, 1997 | May 13, 1997 | Texaco E & P Inc. | Kuhn, H. J. TR.2 #62 | 9,500 | 36130742 |
| 461928 | May 5, 1997 | May 5, 1997 | Texaco E & P Inc. | Polk, J. V. "B" O/A #45 | 9,500 | 36130740 |
| 461316 | Apr 18, 1997 | Apr 18, 1997 | Aspen Exploration, Inc. | Cormier #1 | 18,000 | 36130738 |
| 460937 | Apr 9, 1997 | Apr 9, 1997 | Ballard Exploration Company,inc. | Vastar #1A | 11,679 | 36130719 |
| 459024 | Feb 24, 1997 | Feb 24, 1997 | CBN Operating Corp. | Powell Lumer Co. #1 | 8,800 | 36130737 |
| 457692 | Jan 22, 1997 | Jan 22, 1997 | Cameron, Paul E., Jr., Inc. | Cormier #1 | 5,500 | 36130736 |
| 456474 | Dec 18, 1996 | Dec 18, 1996 | Union Oil Company of California | Quinn, B.E. #4 | 9,000 | 36130734 |