| 558547 | Mar 4, 2005 | Mar 4, 2005 | Winn Exploration Co., Inc. | Houston | Kleinschmidt #1H | 17,000 | 22531045 |
| 558547Amendment | Mar 4, 2005 | Mar 4, 2005 | Winn Exploration Co., Inc. | Houston | Kleinschmidt #1 | 17,000 | 22531045 |
| 558238 | Feb 25, 2005 | Feb 25, 2005 | Winn Exploration Co., Inc. | De Witt | Nordheim Unit #3 | 10,100 | 12332018 |
| 558238Amendment | Feb 25, 2005 | Feb 25, 2005 | Winn Exploration Co., Inc. | De Witt | Nordheim Unit #3 | 11,000 | 12332018 |
| 557629 | Feb 14, 2005 | Feb 14, 2005 | Winn Exploration Co., Inc. | McMullen | Woehst #1 | 10,000 | 31133788 |
| 557629Amendment | Feb 14, 2005 | Feb 14, 2005 | Winn Exploration Co., Inc. | McMullen | Bridges #1 | 10,000 | 31133788 |
| 557450 | Feb 9, 2005 | Feb 9, 2005 | Winn Exploration Co., Inc. | Houston | Rudman #1H | 17,500 | 22531043 |
| 556743 | Feb 7, 2005 | Feb 7, 2005 | Winn Exploration Co., Inc. | De Witt | Nordheim Unit #1 | 10,400 | 12331972 |
| 554409 | Dec 6, 2004 | Dec 6, 2004 | Winn Exploration Co., Inc. | Houston | Lovell -A- #1H | 16,000 | 22531042 |
| 553542 | Nov 12, 2004 | Nov 12, 2004 | Winn Exploration Co., Inc. | Houston | Lovell #2H | 20,000 | 22531035 |
| 552704 | Oct 26, 2004 | Oct 26, 2004 | Winn Exploration Co., Inc. | De Witt | Nordheim Unit #2 | 11,500 | 12331999 |
| 551743 | Sep 30, 2004 | Sep 30, 2004 | Winn Exploration Co., Inc. | Houston | Temple Inland III #3H | 17,000 | 22531032 |
| 549324 | Sep 24, 2004 | Sep 24, 2004 | Winn Exploration Co., Inc. | Stephens | County Line "a" Unit #4H | 4,300 | 42935752 |
| 549866 | Aug 20, 2004 | Aug 20, 2004 | Winn Exploration Co., Inc. | De Witt | England #1 | 10,400 | 12331989 |
| 549866Amendment | Aug 20, 2004 | Aug 20, 2004 | Winn Exploration Co., Inc. | De Witt | England #1 | 11,000 | 12331989 |
| 549321 | Aug 12, 2004 | Aug 12, 2004 | Winn Exploration Co., Inc. | Stephens | County Line "A" #A 6 | 4,400 | 42935764 |
| 549271 | Aug 6, 2004 | Aug 6, 2004 | Winn Exploration Co., Inc. | Houston | Temple-Inland II #2H | 17,700 | 22531030 |
| 548886 | Jul 29, 2004 | Jul 29, 2004 | Winn Exploration Co., Inc. | Cherokee | Chronister #3 | 6,300 | 07331106 |
| 548679 | Jul 23, 2004 | Jul 23, 2004 | Winn Exploration Co., Inc. | De Witt | Belitz #1 | 10,300 | 12331984 |
| 545019 | May 13, 2004 | May 13, 2004 | Winn Exploration Co., Inc. | De Witt | Nordheim #1 | 11,500 | 12331972 |
| 544269 | Apr 9, 2004 | Apr 9, 2004 | Winn Exploration Co., Inc. | Houston | Temple-Inland #1H | 16,000 | 22531022 |
| 537498 | Oct 15, 2003 | Oct 15, 2003 | Winn Exploration Co., Inc. | Maverick | Winn Fee #31 | 8,800 | 32332703 |
| 536704 | Sep 29, 2003 | Sep 29, 2003 | Winn Exploration Co., Inc. | Bee | Dugat #2 | 4,000 | 02533247 |
| 534123 | Jul 21, 2003 | Jul 21, 2003 | Winn Exploration Co., Inc. | Stephens | County Line 21 #A 2 | 4,150 | 42935530 |
| 531724 | May 8, 2003 | May 8, 2003 | Winn Exploration Co., Inc. | Stephens | County Line 21 #A 47 | 3,300 | 42936003 |
| 524537 | Oct 11, 2002 | Oct 11, 2002 | Winn Exploration Co., Inc. | Bee | Borrum, L. F. #1 | 7,500 | 02533190 |
| 524537Amendment | Oct 11, 2002 | Oct 11, 2002 | Winn Exploration Co., Inc. | Bee | Borroum, L. F. #1 | 11,500 | 02533190 |
| 522590 | Aug 20, 2002 | Aug 20, 2002 | Winn Exploration Co., Inc. | Stephens | County Line "A" #A 6 | 4,400 | 42935764 |
| 522535 | Aug 19, 2002 | Aug 19, 2002 | Winn Exploration Co., Inc. | Stephens | County Line "a" Unit #4 | 6,725 | 42935752 |
| 522476 | Aug 2, 2002 | Aug 2, 2002 | Winn Exploration Co., Inc. | Cherokee | Chronister #2 | 6,000 | 07331040 |
| 522476Amendment | Aug 2, 2002 | Aug 2, 2002 | Winn Exploration Co., Inc. | Cherokee | Chronister #2 | 6,400 | 07331040 |
| 522475 | Aug 2, 2002 | Aug 2, 2002 | Winn Exploration Co., Inc. | Cherokee | Chronister #1 | 6,000 | 07331039 |
| 522475Amendment | Aug 2, 2002 | Aug 2, 2002 | Winn Exploration Co., Inc. | Cherokee | Chronister #1 | 6,400 | 07331039 |
| 520902 | Jun 17, 2002 | Jun 17, 2002 | Winn Exploration Co., Inc. | Stephens | Law #1 | 4,600 | 42935963 |
| 520901 | Jun 17, 2002 | Jun 17, 2002 | Winn Exploration Co., Inc. | Stephens | County Line 7 #A 49 | 4,600 | 42935962 |
| 518077 | Mar 5, 2002 | Mar 5, 2002 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 46 | 4,600 | 42935947 |
| 517685Amendment | Feb 19, 2002 | Feb 19, 2002 | Winn Exploration Co., Inc. | Bee | Bowman #1 | 4,000 | 02533163 |
| 516534 | Jan 4, 2002 | Jan 4, 2002 | Winn Exploration Co., Inc. | Stephens | County Line 23 #A 45 | 4,600 | 42935943 |
| 516533 | Jan 4, 2002 | Jan 4, 2002 | Winn Exploration Co., Inc. | Stephens | County Line 23 #A 44 | 4,600 | 42935942 |
| 515244 | Nov 9, 2001 | Nov 9, 2001 | Winn Exploration Co., Inc. | Stephens | Taylor #1 | 4,600 | 42935937 |
| 513775 | Sep 21, 2001 | Sep 21, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 43 | 4,600 | 42935933 |
| 513734 | Sep 19, 2001 | Sep 19, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 42 | 4,600 | 42935930 |
| 513237 | Sep 7, 2001 | Sep 7, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 41 | 4,600 | 42935922 |
| 512966 | Aug 24, 2001 | Aug 24, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 21 #A 40 | 4,600 | 42935921 |
| 512351 | Aug 9, 2001 | Aug 9, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 21 #A 39 | 4,600 | 42935918 |
| 512350 | Aug 8, 2001 | Aug 8, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 21 #A 38 | 4,600 | 42935917 |
| 512349 | Aug 8, 2001 | Aug 8, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 37 | 4,600 | 42935916 |
| 511976 | Jul 31, 2001 | Jul 31, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 36 | 4,600 | 42935913 |
| 511923 | Jul 31, 2001 | Jul 31, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 35 | 4,600 | 42935915 |
| 511922 | Jul 31, 2001 | Jul 31, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 11 #A 33 | 4,600 | 42935914 |
| 511813 | Jul 24, 2001 | Jul 24, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 34 | 4,600 | 42935912 |
| 511636 | Jul 19, 2001 | Jul 19, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 11 #A 29 | 4,600 | 42935911 |
| 511372 | Jul 13, 2001 | Jul 13, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 11 #A 32 | 4,600 | 42935910 |
| 511278 | Jul 10, 2001 | Jul 10, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 11 #A 31 | 4,600 | 42935908 |
| 511131 | Jul 6, 2001 | Jul 6, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 11 #A 30 | 4,600 | 42935906 |
| 510569 | Jun 26, 2001 | Jun 26, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 27 | 4,600 | 42935901 |
| 510570 | Jun 22, 2001 | Jun 22, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 21 #A 28 | 4,600 | 42935902 |
| 509836 | Jun 6, 2001 | Jun 6, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 26 | 4,600 | 42935898 |
| 509835 | Jun 6, 2001 | Jun 6, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 21 #A 25 | 4,600 | 42935897 |
| 509591 | Jun 5, 2001 | Jun 5, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 11 #A24 #A 24 | 4,600 | 42935894 |
| 509593 | Jun 1, 2001 | Jun 1, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #A 22 | 4,600 | 42935892 |
| 509592 | Jun 1, 2001 | Jun 1, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 11 #A 23 | 4,600 | 42935893 |
| 509407 | May 29, 2001 | May 29, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #A 21 | 4,600 | 42935891 |
| 509056 | May 16, 2001 | May 16, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 7 #A 19 | 4,600 | 42935890 |
| 508307 | May 15, 2001 | May 15, 2001 | Winn Exploration Co., Inc. | Stephens | County Line "A" #A 17 | 4,600 | 42935885 |
| 508660 | May 8, 2001 | May 8, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #A 20 | 4,600 | 42935888 |
| 508212 | Apr 25, 2001 | Apr 25, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #A 18 | 4,600 | 42935883 |
| 507770 | Apr 13, 2001 | Apr 13, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #A 16 | 4,600 | 42935877 |
| 507691 | Apr 11, 2001 | Apr 11, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 7 #15 | 4,600 | 42935876 |
| 507690 | Apr 11, 2001 | Apr 11, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #14 | 4,600 | 42935875 |
| 507226 | Mar 30, 2001 | Mar 30, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #13A | 4,600 | 42935871 |
| 507064 | Mar 27, 2001 | Mar 27, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #12A | 4,600 | 42935870 |
| 506737 | Mar 20, 2001 | Mar 20, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #11A | 4,900 | 42935867 |
| 506737Amendment | Mar 20, 2001 | Mar 20, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 22 #11A | 4,900 | 42935867 |
| 505804 | Feb 26, 2001 | Feb 26, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #10A | 4,600 | 42935864 |
| 504524 | Jan 25, 2001 | Jan 25, 2001 | Winn Exploration Co., Inc. | Bee | Green #1 | 8,200 | 02533089 |
| 504319 | Jan 19, 2001 | Jan 19, 2001 | Winn Exploration Co., Inc. | Stephens | County Line 9 #9A | 4,100 | 42935849 |
| 503297 | Dec 20, 2000 | Dec 20, 2000 | Winn Exploration Co., Inc. | Stephens | County Line 7 #A 8 | 5,200 | 42935846 |
| 503237 | Dec 19, 2000 | Dec 19, 2000 | Winn Exploration Co., Inc. | Shelby | O'Rear #2HH | 11,500 | 41930769 |
| 502057 | Nov 16, 2000 | Nov 16, 2000 | Winn Exploration Co., Inc. | Shelby | O'Rear #1HH | 11,500 | 41930767 |
| 500509 | Oct 6, 2000 | Oct 6, 2000 | Winn Exploration Co., Inc. | Shelby | Cassell #1HH | 6,200 | 41930763 |
| 498709 | Aug 21, 2000 | Aug 21, 2000 | Winn Exploration Co., Inc. | Shelby | Locke #1HH | 6,400 | 41930753 |
| 496759 | Jun 30, 2000 | Jun 30, 2000 | Winn Exploration Co., Inc. | Aransas | Grant #1 | 11,600 | 00730847 |
| 496759Amendment | Jun 30, 2000 | Jun 30, 2000 | Winn Exploration Co., Inc. | Aransas | Grant #1 | 14,200 | 00730847 |
| 496486 | Jun 23, 2000 | Jun 23, 2000 | Winn Exploration Co., Inc. | Jim Wells | Meyer #1 | 5,500 | 24932374 |
| 496295 | Jun 16, 2000 | Jun 16, 2000 | Winn Exploration Co., Inc. | Live Oak | Lyne #1 | 3,600 | 29734401 |
| 496295Amendment | Jun 16, 2000 | Jun 16, 2000 | Winn Exploration Co., Inc. | Live Oak | Lyne #1 | 3,600 | 29734401 |
| 496054 | Jun 12, 2000 | Jun 12, 2000 | Winn Exploration Co., Inc. | Duval | Martinez #1 | 3,600 | 13138413 |
| 493467 | Mar 24, 2000 | Mar 24, 2000 | Winn Exploration Co., Inc. | Hidalgo | Garcia Heirs Unit #2 | 4,000 | 21532752 |
| 493005 | Mar 13, 2000 | Mar 13, 2000 | Winn Exploration Co., Inc. | Bee | Dugat #1 | 11,900 | 02533004 |
| 493004 | Mar 13, 2000 | Mar 13, 2000 | Winn Exploration Co., Inc. | Bee | Finley #1 | 9,100 | 02533003 |
| 492939 | Mar 10, 2000 | Mar 10, 2000 | Winn Exploration Co., Inc. | Bee | Finley #2 | 3,700 | 02533002 |
| 490762 | Dec 30, 1999 | Dec 30, 1999 | Winn Exploration Co., Inc. | Nueces | McMurry #1 | 5,600 | 35533206 |
| 490543 | Dec 21, 1999 | Dec 21, 1999 | Winn Exploration Co., Inc. | Nueces | Taylor #1 | 14,200 | 35533204 |
| 489331Amendment | Nov 16, 1999 | Nov 16, 1999 | Winn Exploration Co., Inc. | Cameron | State Lease 713 #1 | 13,000 | 06130512 |
| 489331Amendment | Nov 16, 1999 | Nov 16, 1999 | Winn Exploration Co., Inc. | Cameron | State Lease 713 #1 | 13,000 | 06130512 |
| 487421 | Sep 16, 1999 | Sep 16, 1999 | Winn Exploration Co., Inc. | Victoria | Rydolph Heirs #1 | 6,800 | 46933340 |
| 487513 | Sep 13, 1999 | Sep 13, 1999 | Winn Exploration Co., Inc. | Stephens | Winn #1 | 4,316 | 42935773 |
| 487513Amendment | Sep 13, 1999 | Sep 13, 1999 | Winn Exploration Co., Inc. | Stephens | Winn #1H | 4,316 | 42935773 |
| 487513Amendment | Sep 13, 1999 | Sep 13, 1999 | Winn Exploration Co., Inc. | Stephens | Winn #1H | 4,316 | 42935773 |