| 745229 | Aug 2, 2012 | Aug 2, 2012 | Four Sevens Operating Co., Ltd. | Lubbock | Durham Unit #1HH | 11,600 | 30331570 |
| 729691 | Dec 13, 2011 | Dec 13, 2011 | Four Sevens Operating Co., Ltd. | Lubbock | Teal Unit #1HH | 16,000 | 30331565 |
| 729691Amendment | Dec 13, 2011 | Dec 13, 2011 | Four Sevens Operating Co., Ltd. | Lubbock | Teal Unit #1HH | 16,000 | 30331565 |
| 729691Amendment | Dec 13, 2011 | Dec 13, 2011 | Four Sevens Operating Co., Ltd. | Lubbock | Teal Unit #1HH | 16,000 | 30331565 |
| 623309 | Jul 27, 2006 | Jul 27, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Armet Dale Street #1HH | 9,000 | 43931720 |
| 622755 | Jul 18, 2006 | Jul 18, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Risinger #4HH | 9,000 | 43931704 |
| 622755Amendment | Jul 18, 2006 | Jul 18, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Risinger #4HH | 9,000 | 43931704 |
| 621833 | Jun 29, 2006 | Jun 29, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | FJM #1HH | 9,000 | 43931688 |
| 621623 | Jun 27, 2006 | Jun 27, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Parrot E #5HH | 9,000 | 43931681 |
| 621353 | Jun 21, 2006 | Jun 21, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Laguna Point #5H | 9,000 | 43931671 |
| 621352 | Jun 21, 2006 | Jun 21, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Laguna Point #4H | 9,000 | 43931670 |
| 621351 | Jun 21, 2006 | Jun 21, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Laguna Point #3H | 9,000 | 43931669 |
| 620173 | Jun 1, 2006 | Jun 1, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | W. S. Minerals C #3HH | 9,000 | 43931641 |
| 620168 | May 31, 2006 | May 31, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | W. S. Minerals #4HH | 9,000 | 43931640 |
| 620167 | May 31, 2006 | May 31, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | W. S. Minerals #2HH | 9,000 | 43931639 |
| 620162 | May 31, 2006 | May 31, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Tarrant Minerals B #2HH | 9,000 | 43931638 |
| 620160 | May 31, 2006 | May 31, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | ZFN Triplets #1HH | 9,000 | 43931637 |
| 619064 | May 10, 2006 | May 10, 2006 | Four Sevens Operating Co., Ltd. | Johnson | Hidden Creek #1HH | 9,000 | 25130981 |
| 619064Amendment | May 10, 2006 | May 10, 2006 | Four Sevens Operating Co., Ltd. | Johnson | Hidden Creek #1HH | 9,000 | 25130981 |
| 618757 | May 5, 2006 | May 5, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Spinks #4HH | 9,000 | 43931616 |
| 618756 | May 5, 2006 | May 5, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Spinks #3HH | 9,000 | 43931615 |
| 618755 | May 5, 2006 | May 5, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Spinks #2HH | 9,000 | 43931614 |
| 618754 | May 5, 2006 | May 5, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Spinks #1HH | 9,000 | 43931613 |
| 617567 | Apr 13, 2006 | Apr 13, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Old Weatherford #2HH | 9,000 | 43931589 |
| 617567Amendment | Apr 13, 2006 | Apr 13, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Old Weatherford #2HH | 9,000 | 43931589 |
| 616966 | Apr 4, 2006 | Apr 4, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Jill #1H | 9,000 | 43931579 |
| 616769 | Mar 30, 2006 | Mar 30, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Poly D #4HH | 9,000 | 43931572 |
| 616769Amendment | Mar 30, 2006 | Mar 30, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Poly D #4HH | 9,000 | 43931572 |
| 616710 | Mar 30, 2006 | Mar 30, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Goodman #B 2HH | 9,000 | 43931569 |
| 616349 | Mar 23, 2006 | Mar 23, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Sunset Oaks #1HH | 9,000 | 43931563 |
| 615884 | Mar 15, 2006 | Mar 15, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Sienna Hills #1H | 9,000 | 43931555 |
| 615119 | Mar 2, 2006 | Mar 2, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Ranchetts #1HH | 9,000 | 43931540 |
| 614758 | Feb 23, 2006 | Feb 23, 2006 | Four Sevens Operating Co., Ltd. | Johnson | Hyder D #4H | 9,000 | 25130814 |
| 614697 | Feb 23, 2006 | Feb 23, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Laguna Point #1H | 9,000 | 43931530 |
| 614329 | Feb 16, 2006 | Feb 16, 2006 | Four Sevens Operating Co., Ltd. | Johnson | Featherston #1H | 9,000 | 25130802 |
| 612377 | Jan 13, 2006 | Jan 13, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | Parrot D #4HH | 9,000 | 43931476 |
| 612297 | Jan 12, 2006 | Jan 12, 2006 | Four Sevens Operating Co., Ltd. | Tarrant | TLH #2H | 9,000 | 43931471 |
| 611084 | Dec 15, 2005 | Dec 15, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Hyder Ranch #3H | 9,000 | 43931445 |
| 610858 | Dec 15, 2005 | Dec 15, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Petrus-Harris Unit #1HH | 9,000 | 43931446 |
| 610506 | Dec 5, 2005 | Dec 5, 2005 | Four Sevens Operating Co., Ltd. | Johnson | Panchasarp #1H | 9,000 | 25130668 |
| 609919 | Nov 22, 2005 | Nov 22, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Poly C #3HH | 9,000 | 43931426 |
| 609919Amendment | Nov 22, 2005 | Nov 22, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Poly C #3HH | 9,000 | 43931426 |
| 609918 | Nov 22, 2005 | Nov 22, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Parrot A #3HH | 9,000 | 43931425 |
| 609417 | Nov 14, 2005 | Nov 14, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Potter - Purcell #1H | 9,000 | 43931412 |
| 606942 | Sep 26, 2005 | Sep 26, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Poly B #2H | 9,000 | 43931364 |
| 605268 | Aug 22, 2005 | Aug 22, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Charitable #1H | 9,000 | 43931340 |
| 605190 | Aug 18, 2005 | Aug 18, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | BP 367 #2H | 9,000 | 43931339 |
| 605188 | Aug 18, 2005 | Aug 18, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | BP 367 #1H | 9,000 | 43931338 |
| 603640 | Jul 19, 2005 | Jul 19, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Parrot-Allied #2H | 9,000 | 43931312 |
| 601401 | May 31, 2005 | May 31, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Christopher Harris #1H | 9,000 | 43931267 |
| 601401Amendment | May 31, 2005 | May 31, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Christopher Harris #1H | 9,000 | 43931267 |
| 601236 | May 26, 2005 | May 26, 2005 | Four Sevens Operating Co., Ltd. | Johnson | Parker #1HH | 9,000 | 25130418 |
| 600983 | May 20, 2005 | May 20, 2005 | Four Sevens Operating Co., Ltd. | Johnson | Hyder #2H | 9,000 | 25130410 |
| 600623 | May 13, 2005 | May 13, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Old Weatherford #1H | 9,000 | 43931250 |
| 561004 | Apr 25, 2005 | Apr 25, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Minerals, W.S. #1H | 9,000 | 43931227 |
| 561003 | Apr 25, 2005 | Apr 25, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | TLH #1H | 9,000 | 43931226 |
| 561002Amendment | Apr 25, 2005 | Apr 25, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Risinger #3H | 9,000 | 43931225 |
| 561002Amendment | Apr 25, 2005 | Apr 25, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Risinger #3H | 9,000 | 43931225 |
| 561001 | Apr 25, 2005 | Apr 25, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Ricketts Unit #1H | 9,000 | 43931224 |
| 559208 | Mar 18, 2005 | Mar 18, 2005 | Four Sevens Operating Co., Ltd. | Johnson | Hyder #1H | 8,000 | 25130363 |
| 557577 | Feb 11, 2005 | Feb 11, 2005 | Four Sevens Operating Co., Ltd. | Tarrant | Tarrant Minerals #1H | 9,000 | 43931142 |
| 555067Amendment | Dec 20, 2004 | Dec 20, 2004 | Four Sevens Operating Co., Ltd. | Jack | Coca Cola #2H | 6,500 | 23738828 |
| 554581 | Dec 8, 2004 | Dec 8, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Goodman #1H | 9,000 | 43931080 |
| 554127 | Nov 29, 2004 | Nov 29, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Risinger #2H | 9,000 | 43931068 |
| 554036 | Nov 23, 2004 | Nov 23, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Risinger #1H | 9,000 | 43931066 |
| 553808 | Nov 18, 2004 | Nov 18, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Crowley Minerals #1H | 9,000 | 43931061 |
| 553807 | Nov 18, 2004 | Nov 18, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Harbison-Fischer #2H | 9,000 | 43931060 |
| 552067 | Oct 8, 2004 | Oct 8, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Harbison-Fischer #1H | 9,000 | 43931010 |
| 552067Amendment | Oct 8, 2004 | Oct 8, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Harbison-Fischer #1H | 9,000 | 43931010 |
| 552067Amendment | Oct 8, 2004 | Oct 8, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Harbison-Fischer #1H | 9,000 | 43931010 |
| 550039 | Aug 24, 2004 | Aug 24, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Bell #2H | 9,000 | 43930982 |
| 548598 | Jul 22, 2004 | Jul 22, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Poly #1H | 9,000 | 43930945 |
| 548598Amendment | Jul 22, 2004 | Jul 22, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Poly #1H | 9,000 | 43930945 |
| 548598Amendment | Jul 22, 2004 | Jul 22, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Poly #1H | 9,000 | 43930945 |
| 547048 | Jun 17, 2004 | Jun 17, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Brentwood #1H | 9,000 | 43930916 |
| 545933 | May 20, 2004 | May 20, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Parrot #1H | 9,000 | 43930892 |
| 545933Amendment | May 20, 2004 | May 20, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Parrot #1H | 9,000 | 43930892 |
| 545933Amendment | May 20, 2004 | May 20, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Parrot #1H | 9,000 | 43930892 |
| 541333 | Jan 28, 2004 | Jan 28, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | HBB #3H | 9,000 | 43930797 |
| 541332 | Jan 28, 2004 | Jan 28, 2004 | Four Sevens Operating Co., Ltd. | Tarrant | Wilson #1H | 9,000 | 43930796 |
| 539761 | Dec 16, 2003 | Dec 16, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Langley Revelstoke #2H | 9,000 | 43930774 |
| 539757 | Dec 16, 2003 | Dec 16, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Langley #1H | 9,000 | 43930771 |
| 539754 | Dec 16, 2003 | Dec 16, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Langley #4H | 9,000 | 43930769 |
| 538114 | Oct 31, 2003 | Oct 31, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | HBB #2H | 8,000 | 43930734 |
| 536078Amendment | Oct 31, 2003 | Oct 31, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Haslet Heights #1H | 9,000 | 43930693 |
| 537988 | Oct 28, 2003 | Oct 28, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | HBB #1H | 8,000 | 43930732 |
| 537148 | Oct 3, 2003 | Oct 3, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Harris #1H | 7,800 | 43930711 |
| 536291 | Sep 10, 2003 | Sep 10, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | White, Hugh #1H | 9,000 | 43930697 |
| 536290 | Sep 10, 2003 | Sep 10, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | White, Hugh #2H | 9,000 | 43930696 |
| 534262 | Jul 16, 2003 | Jul 16, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Brumbaugh #3H | 8,500 | 43930657 |
| 534262Amendment | Jul 16, 2003 | Jul 16, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Brumbaugh #3H | 8,500 | 43930657 |
| 534262Amendment | Jul 16, 2003 | Jul 16, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Brumbaugh #3H | 8,500 | 43930657 |
| 534261 | Jul 16, 2003 | Jul 16, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Brumbaugh #2H | 8,500 | 43930656 |
| 533119 | Jun 13, 2003 | Jun 13, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Fossil Hill #6H | 9,000 | 43930646 |
| 529642Amendment | Mar 14, 2003 | Mar 14, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Daugherty #3H | 8,000 | 43930598 |
| 529638Amendment | Mar 14, 2003 | Mar 14, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | E.P.R.I. #2H | 9,000 | 43930600 |
| 529637Amendment | Mar 14, 2003 | Mar 14, 2003 | Four Sevens Operating Co., Ltd. | Tarrant | Langley #1H | 8,000 | 43930596 |
| 520287Amendment | May 23, 2002 | May 23, 2002 | Four Sevens Operating Co., Ltd. | Tarrant | Golden Triangle "H" #8H | 7,800 | 43930420 |
| 520283Amendment | May 23, 2002 | May 23, 2002 | Four Sevens Operating Co., Ltd. | Tarrant | Golden Triangle D #4H | 9,000 | 43930416 |
| 520281Amendment | May 23, 2002 | May 23, 2002 | Four Sevens Operating Co., Ltd. | Tarrant | Golden Triangle B #2H | 9,000 | 43930414 |