| 700509Amendment | Aug 25, 2010 | Aug 25, 2010 | Royal Production Company, Inc. | Live Oak | Lucas, R. #1 | 6,950 | 29734914 |
| 700509Amendment | Aug 25, 2010 | Aug 25, 2010 | Royal Production Company, Inc. | Live Oak | Lucas, R. #1 | 6,950 | 29734914 |
| 700510 | Aug 19, 2010 | Aug 19, 2010 | Royal Production Company, Inc. | Live Oak | Cartwright Ranch #3 | 6,150 | 29734915 |
| 700503 | Aug 19, 2010 | Aug 19, 2010 | Royal Production Company, Inc. | Live Oak | Beall #1 | 6,550 | 29734913 |
| 697671 | Jun 16, 2010 | Jun 16, 2010 | Royal Production Company, Inc. | Live Oak | Cartwright Ranch #2 | 4,800 | 29734904 |
| 697671Amendment | Jun 16, 2010 | Jun 16, 2010 | Royal Production Company, Inc. | Live Oak | Cartwright Ranch #2 | 4,800 | 29734904 |
| 695989 | May 20, 2010 | May 20, 2010 | Royal Production Company, Inc. | Live Oak | Lucas #1 | 6,550 | 29734889 |
| 687405 | Nov 20, 2009 | Nov 20, 2009 | Royal Production Company, Inc. | Live Oak | Cartwright Ranch #1 | 6,600 | 29734858 |
| 673331 | Oct 23, 2008 | Oct 23, 2008 | Royal Production Company, Inc. | Live Oak | Dobie Heirs #1 | 5,500 | 29734817 |
| 617623 | Apr 21, 2006 | Apr 21, 2006 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #12 | 11,300 | 21533271 |
| 609186 | Nov 10, 2005 | Nov 10, 2005 | Royal Production Company, Inc. | Matgrda IS-LB | State Tract 598-L #1 | 3,000 | 70330420 |
| 608753 | Nov 3, 2005 | Nov 3, 2005 | Royal Production Company, Inc. | Matgrda IS-LB | State Tract 625-L #1 | 2,700 | 70330419 |
| 608753Amendment | Nov 3, 2005 | Nov 3, 2005 | Royal Production Company, Inc. | Matgrda IS-LB | State Tract 625-L #1 | 2,700 | 70330419 |
| 604185 | Aug 2, 2005 | Aug 2, 2005 | Royal Production Company, Inc. | Mustang IS-SB | S. T. 898-S #1 | 7,000 | 60230208 |
| 604185Amendment | Aug 2, 2005 | Aug 2, 2005 | Royal Production Company, Inc. | Mustang IS-SB | State Tract 898-S #1 | 7,000 | 60230208 |
| 602317 | Jun 22, 2005 | Jun 22, 2005 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #5 | 12,500 | 21533097 |
| 557548 | Feb 16, 2005 | Feb 16, 2005 | Royal Production Company, Inc. | McMullen | Vicknair #1 | 9,000 | 31133783 |
| 553067 | Nov 3, 2004 | Nov 3, 2004 | Royal Production Company, Inc. | Hidalgo | Edinburg Gas Unit #12 | 11,300 | 21533271 |
| 553067Amendment | Nov 3, 2004 | Nov 3, 2004 | Royal Production Company, Inc. | Hidalgo | Edinburg Gas Unit #12 | 11,300 | 21533271 |
| 553067Amendment | Nov 3, 2004 | Nov 3, 2004 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #12 | 11,300 | 21533271 |
| 551028 | Sep 17, 2004 | Sep 17, 2004 | Royal Production Company, Inc. | Fort Bend | Foster Farms, Inc #1 | 15,300 | 15730354 |
| 550883 | Sep 13, 2004 | Sep 13, 2004 | Royal Production Company, Inc. | Hidalgo | Swoli #A 2 | 14,500 | 21533254 |
| 549482 | Aug 11, 2004 | Aug 11, 2004 | Royal Production Company, Inc. | Hidalgo | Casso Gas Unit #3 | 14,300 | 21533243 |
| 549482Amendment | Aug 11, 2004 | Aug 11, 2004 | Royal Production Company, Inc. | Hidalgo | Casso Gas Unit #3 | 15,500 | 21533243 |
| 546868 | Jun 14, 2004 | Jun 14, 2004 | Royal Production Company, Inc. | San Patricio | Cable Gas Unit #2 | 12,200 | 40932759 |
| 546868Amendment | Jun 14, 2004 | Jun 14, 2004 | Royal Production Company, Inc. | San Patricio | Cable Gas Unit #2 | 12,200 | 40932759 |
| 543908 | Mar 31, 2004 | Mar 31, 2004 | Royal Production Company, Inc. | Chambers | Dunman #1 | 9,800 | 07132269 |
| 541658 | Feb 4, 2004 | Feb 4, 2004 | Royal Production Company, Inc. | Webb | De la Garza, Lolita Benavides #1 | 12,500 | 47938630 |
| 539499 | Dec 9, 2003 | Dec 9, 2003 | Royal Production Company, Inc. | Hidalgo | Santa Anita #1 | 15,500 | 21533162 |
| 539496 | Dec 9, 2003 | Dec 9, 2003 | Royal Production Company, Inc. | Duval | Barfield #1 | 7,800 | 13138674 |
| 539496Amendment | Dec 9, 2003 | Dec 9, 2003 | Royal Production Company, Inc. | Duval | Barfield #1 | 7,800 | 13138674 |
| 537637 | Oct 21, 2003 | Oct 21, 2003 | Royal Production Company, Inc. | Nueces | State Tract 15 #1 | 8,474 | 35530698 |
| 533770 | Jul 2, 2003 | Jul 2, 2003 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #1 | 12,500 | 21532161 |
| 530950 | Apr 29, 2003 | Apr 29, 2003 | Royal Production Company, Inc. | Nueces | Beach-Renken Unit #1 | 11,600 | 35533543 |
| 530148 | Mar 31, 2003 | Mar 31, 2003 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #6 | 12,500 | 21533098 |
| 530148Amendment | Mar 31, 2003 | Mar 31, 2003 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #6 | 12,500 | 21533098 |
| 530147 | Mar 31, 2003 | Mar 31, 2003 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #5 | 12,500 | 21533097 |
| 530147Amendment | Mar 31, 2003 | Mar 31, 2003 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #5 | 12,500 | 21533097 |
| 529735 | Mar 18, 2003 | Mar 18, 2003 | Royal Production Company, Inc. | Nueces | Talbert, L. G. #5 | 13,800 | 35533535 |
| 525553 | Nov 22, 2002 | Nov 22, 2002 | Royal Production Company, Inc. | San Patricio | Cable-Garrett #1 | 11,370 | 40932721 |
| 525553Amendment | Nov 22, 2002 | Nov 22, 2002 | Royal Production Company, Inc. | San Patricio | Cable-Garrett #1 | 11,370 | 40932721 |
| 523347 | Sep 6, 2002 | Sep 6, 2002 | Royal Production Company, Inc. | Nueces | Weil #1 | 11,600 | 35533485 |
| 523347Amendment | Sep 6, 2002 | Sep 6, 2002 | Royal Production Company, Inc. | Nueces | Weil #1 | 11,600 | 35533485 |
| 522102 | Jul 23, 2002 | Jul 23, 2002 | Royal Production Company, Inc. | Nueces | Talbert, L. G. #4 | 13,200 | 35533470 |
| 522102Amendment | Jul 23, 2002 | Jul 23, 2002 | Royal Production Company, Inc. | Nueces | Talbert, L. G. #4 | 13,200 | 35533470 |
| 516611 | Feb 1, 2002 | Feb 1, 2002 | Royal Production Company, Inc. | Hardin | Tanton #1 | 10,100 | 19932740 |
| 514720 | Oct 24, 2001 | Oct 24, 2001 | Royal Production Company, Inc. | Brazoria | Navigation District #4 | 2,700 | 03932749 |
| 513732 | Sep 19, 2001 | Sep 19, 2001 | Royal Production Company, Inc. | Brazoria | Navigation District #3 | 7,500 | 03932752 |
| 513731 | Sep 19, 2001 | Sep 19, 2001 | Royal Production Company, Inc. | Brazoria | Navigation District #2 | 7,500 | 03932750 |
| 513730 | Sep 19, 2001 | Sep 19, 2001 | Royal Production Company, Inc. | Brazoria | Navigation District #1 | 7,500 | 03932751 |
| 513729 | Sep 19, 2001 | Sep 19, 2001 | Royal Production Company, Inc. | Brazoria | Learned #1 | 7,500 | 03932749 |
| 513729Amendment | Sep 19, 2001 | Sep 19, 2001 | Royal Production Company, Inc. | Brazoria | Navigation District #4 | 2,700 | 03932749 |
| 513729Amendment | Sep 19, 2001 | Sep 19, 2001 | Royal Production Company, Inc. | Brazoria | Learned #1 | 7,500 | 03932749 |
| 508505 | May 8, 2001 | May 8, 2001 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #3 | 12,300 | 21500978 |
| 508505Amendment | May 8, 2001 | May 8, 2001 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #3 | 12,300 | 21500978 |
| 504514 | Jan 26, 2001 | Jan 26, 2001 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #5 | 12,700 | 35533321 |
| 504514Amendment | Jan 26, 2001 | Jan 26, 2001 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #5 | 12,700 | 35533321 |
| 504514Amendment | Jan 26, 2001 | Jan 26, 2001 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #5 | 12,700 | 35533321 |
| 491155 | Jan 27, 2000 | Jan 27, 2000 | Royal Production Company, Inc. | Nueces | Wilson Unit #1 | 13,650 | 35533208 |
| 488095 | Oct 28, 1999 | Oct 28, 1999 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #1 | 12,500 | 21532161 |
| 488167 | Oct 8, 1999 | Oct 8, 1999 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #2 | 6,300 | 35532644 |
| 487965 | Oct 6, 1999 | Oct 6, 1999 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #4 | 9,550 | 35533173 |
| 487965Amendment | Oct 6, 1999 | Oct 6, 1999 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #4 | 9,550 | 35533173 |
| 484014 | Apr 30, 1999 | Apr 30, 1999 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #1 | 9,600 | 35532466 |
| 483772 | Apr 13, 1999 | Apr 13, 1999 | Royal Production Company, Inc. | Nueces | McCoy #1 | 7,200 | 35533147 |
| 478476 | Aug 4, 1998 | Aug 4, 1998 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #3 | 9,200 | 35533061 |
| 476498 | May 21, 1998 | May 21, 1998 | Royal Production Company, Inc. | San Jacinto | Foster Minerals "D" #1 | 10,926 | 40730548 |
| 474461 | Mar 27, 1998 | Mar 27, 1998 | Royal Production Company, Inc. | San Patricio | McKamey B-2 Unit #1 | 12,000 | 40932557 |
| 474461Amendment | Mar 27, 1998 | Mar 27, 1998 | Royal Production Company, Inc. | San Patricio | McKamey B-2 Unit #1 | 12,000 | 40932557 |
| 472946 | Feb 26, 1998 | Feb 26, 1998 | Royal Production Company, Inc. | Lavaca | Borchers Estate #17 | 3,500 | 28532520 |
| 472760 | Feb 11, 1998 | Feb 11, 1998 | Royal Production Company, Inc. | San Jacinto | Berger-Carnes #2 | 10,500 | 40730559 |
| 472607 | Jan 28, 1998 | Jan 28, 1998 | Royal Production Company, Inc. | Lavaca | Borchers Estate #3 | 3,665 | 28530233 |
| 472583 | Jan 27, 1998 | Jan 27, 1998 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #2 | 9,000 | 35532644 |
| 467706 | Sep 18, 1997 | Sep 18, 1997 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #4 | 11,800 | 21532470 |
| 467706Amendment | Sep 18, 1997 | Sep 18, 1997 | Royal Production Company, Inc. | Hidalgo | Edinburg Unit #4 | 11,800 | 21532470 |
| 465128 | Aug 4, 1997 | Aug 4, 1997 | Royal Production Company, Inc. | Nueces | East Side Block Unit #19 | 10,250 | 35533093 |
| 465539 | Jul 29, 1997 | Jul 29, 1997 | Royal Production Company, Inc. | Nueces | East Side Block Unit #13 | 8,160 | 35531384 |
| 465268 | Jul 23, 1997 | Jul 23, 1997 | Royal Production Company, Inc. | Lavaca | Borchers Estate #17 | 3,500 | 28532520 |
| 465268Amendment | Jul 23, 1997 | Jul 23, 1997 | Royal Production Company, Inc. | Lavaca | Borchers Estate #17 | 3,500 | 28532520 |
| 465067 | Jul 18, 1997 | Jul 18, 1997 | Royal Production Company, Inc. | San Patricio | London Gas Unit #1ST | 11,500 | 40930464 |
| 459874 | Mar 14, 1997 | Mar 14, 1997 | Royal Production Company, Inc. | San Jacinto | Campbell Gas Unit #1 | 11,800 | 40730555 |
| 457703 | Jan 22, 1997 | Jan 22, 1997 | Royal Production Company, Inc. | Nueces | Talbert, L. G. #3 | 13,000 | 35531516 |
| 457703Amendment | Jan 22, 1997 | Jan 22, 1997 | Royal Production Company, Inc. | Nueces | Talbert, L. G. #3 | 13,500 | 35531516 |
| 457703Amendment | Jan 22, 1997 | Jan 22, 1997 | Royal Production Company, Inc. | Nueces | Talbert #3 | 9,700 | 35531516 |
| 457457 | Jan 22, 1997 | Jan 22, 1997 | Royal Production Company, Inc. | San Jacinto | Foster Lumber #3 | 10,500 | 40700187 |
| 457006 | Jan 7, 1997 | Jan 7, 1997 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #3 | 10,500 | 35533061 |
| 457006Amendment | Jan 7, 1997 | Jan 7, 1997 | Royal Production Company, Inc. | Nueces | Guaranty Title & Trust #3 | 10,500 | 35533061 |
| 456335 | Dec 20, 1996 | Dec 20, 1996 | Royal Production Company, Inc. | Lavaca | Borchers, William #4B | 3,500 | 28530198 |
| 452476 | Sep 11, 1996 | Sep 11, 1996 | Royal Production Company, Inc. | Hardin | Parker-Tanton Unit #1 | 10,500 | 19932740 |
| 452476Amendment | Sep 11, 1996 | Sep 11, 1996 | Royal Production Company, Inc. | Hardin | Tanton #1 | 10,500 | 19932740 |
| 452476Amendment | Sep 11, 1996 | Sep 11, 1996 | Royal Production Company, Inc. | Hardin | Tanton #1 | 10,800 | 19932740 |
| 451655 | Aug 26, 1996 | Aug 26, 1996 | Royal Production Company, Inc. | San Jacinto | Central Coal & Coke #7 | 10,500 | 40700200 |
| 451477 | Aug 26, 1996 | Aug 26, 1996 | Royal Production Company, Inc. | Nueces | East Side Block #14 | 7,585 | 35531634 |
| 451656 | Aug 21, 1996 | Aug 21, 1996 | Royal Production Company, Inc. | San Jacinto | Berger-Carnes Unit #1 | 11,800 | 40730552 |
| 445426 | Mar 5, 1996 | Mar 5, 1996 | Royal Production Company, Inc. | Nueces | Chapman, J. O. #84 | 7,557 | 35530502 |
| 444653 | Feb 9, 1996 | Feb 9, 1996 | Royal Production Company, Inc. | San Patricio | Crites/ McCord Unit #1 | 9,800 | 40932495 |
| 443385 | Jan 4, 1996 | Jan 4, 1996 | Royal Production Company, Inc. | Nueces | Chapman, J. O. #123 | 8,766 | 35531476 |
| 442746 | Dec 21, 1995 | Dec 21, 1995 | Royal Production Company, Inc. | Nueces | Chapman, J. O. #123 | 8,766 | 35531476 |
| 442492 | Dec 7, 1995 | Dec 7, 1995 | Royal Production Company, Inc. | Hardin | Vastar Rafferty #1 | 10,500 | 19932718 |
| 442536 | Dec 6, 1995 | Dec 6, 1995 | Royal Production Company, Inc. | Newton | Vastar Ray #1 | 10,300 | 35130644 |