| 634640Amendment | Mar 12, 2007 | Mar 12, 2007 | Southwestern Energy Prod. Co. | Smith | Jesse Randolph Odom Gas Unit 1 #7 | 12,700 | 42332180 |
| 634630 | Mar 9, 2007 | Mar 9, 2007 | Southwestern Energy Prod. Co. | Smith | Jesse Randoph Odom Gas Unit 1 #15 | 12,500 | 42332179 |
| 634630Amendment | Mar 9, 2007 | Mar 9, 2007 | Southwestern Energy Prod. Co. | Smith | Jesse Randoph Odom Gas Unit 1 #15 | 12,500 | 42332179 |
| 634579 | Mar 9, 2007 | Mar 9, 2007 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 2 #11 | 12,200 | 42332178 |
| 634579Amendment | Mar 9, 2007 | Mar 9, 2007 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 2 #11 | 12,200 | 42332178 |
| 634577 | Mar 9, 2007 | Mar 9, 2007 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 2 #12 | 12,400 | 42332177 |
| 634577Amendment | Mar 9, 2007 | Mar 9, 2007 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 2 #12 | 12,400 | 42332177 |
| 634178 | Mar 2, 2007 | Mar 2, 2007 | Southwestern Energy Prod. Co. | Angelina | J. W. Sessions Heirs #10 | 12,300 | 00530295 |
| 633763 | Feb 23, 2007 | Feb 23, 2007 | Southwestern Energy Prod. Co. | Angelina | J. W. Sessions Heirs #6 | 12,000 | 00530294 |
| 633761 | Feb 23, 2007 | Feb 23, 2007 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 2 #16 | 12,400 | 42332173 |
| 633185 | Feb 10, 2007 | Feb 10, 2007 | Southwestern Energy Prod. Co. | Smith | Jerry Cross Gas Unit 1 #15 | 12,500 | 42332171 |
| 632908 | Feb 6, 2007 | Feb 6, 2007 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 2 #13 | 12,200 | 42332170 |
| 631963 | Feb 5, 2007 | Feb 5, 2007 | Southwestern Energy Prod. Co. | Smith | Sallie M. Warren Heirs GU 1 #11 | 12,500 | 42332169 |
| 632441 | Jan 26, 2007 | Jan 26, 2007 | Southwestern Energy Prod. Co. | Angelina | J. W. Sessions Heirs #4 | 12,300 | 00530293 |
| 631478 | Jan 26, 2007 | Jan 26, 2007 | Southwestern Energy Prod. Co. | Angelina | Weddington #3 | 12,900 | 00530292 |
| 631471 | Jan 25, 2007 | Jan 25, 2007 | Southwestern Energy Prod. Co. | Angelina | Aclco #1 | 12,850 | 00530291 |
| 631957 | Jan 18, 2007 | Jan 18, 2007 | Southwestern Energy Prod. Co. | Smith | Waldrop Gas Unit 1 #13 | 12,700 | 42332167 |
| 631283 | Jan 3, 2007 | Jan 3, 2007 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #9 | 12,600 | 42332166 |
| 630374 | Dec 28, 2006 | Dec 28, 2006 | Southwestern Energy Prod. Co. | Smith | Newsome Unit 1 #13 | 12,500 | 42332164 |
| 630406 | Dec 22, 2006 | Dec 22, 2006 | Southwestern Energy Prod. Co. | Nacogdoches | Reavley Gas Unit #4 | 12,400 | 34732454 |
| 630401 | Dec 22, 2006 | Dec 22, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #10 | 12,600 | 07331221 |
| 630345 | Dec 21, 2006 | Dec 21, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #15 | 12,600 | 42332163 |
| 630723 | Dec 20, 2006 | Dec 20, 2006 | Southwestern Energy Prod. Co. | Smith | J. F. Ware Gas Unit 1 #13 | 12,400 | 42332165 |
| 630723Amendment | Dec 20, 2006 | Dec 20, 2006 | Southwestern Energy Prod. Co. | Smith | J. F. Ware Gas Unit 1 #13 | 12,400 | 42332165 |
| 629896 | Dec 15, 2006 | Dec 15, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #8 | 12,600 | 07331219 |
| 629896Amendment | Dec 15, 2006 | Dec 15, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #8 | 12,900 | 07331219 |
| 628136 | Nov 30, 2006 | Nov 30, 2006 | Southwestern Energy Prod. Co. | Smith | Jerry Cross Gas Unit 1 #5 | 12,200 | 42332151 |
| 628737 | Nov 14, 2006 | Nov 14, 2006 | Southwestern Energy Prod. Co. | Cherokee | Shelton #2 | 12,000 | 07331215 |
| 628729 | Nov 8, 2006 | Nov 8, 2006 | Southwestern Energy Prod. Co. | Angelina | Weddington #2 | 12,900 | 00530287 |
| 628536 | Nov 3, 2006 | Nov 3, 2006 | Southwestern Energy Prod. Co. | Cherokee | Sessions, J. W. Heirs #5 | 12,200 | 07331211 |
| 628345 | Nov 1, 2006 | Nov 1, 2006 | Southwestern Energy Prod. Co. | Cherokee | Rube Sessions #3 | 12,200 | 07331208 |
| 628270 | Oct 31, 2006 | Oct 31, 2006 | Southwestern Energy Prod. Co. | Angelina | Weddington #6 | 12,800 | 00530286 |
| 628261 | Oct 30, 2006 | Oct 30, 2006 | Southwestern Energy Prod. Co. | Angelina | Weddington #5 | 12,800 | 00530285 |
| 628254 | Oct 30, 2006 | Oct 30, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #11 | 9,800 | 07331206 |
| 628254Amendment | Oct 30, 2006 | Oct 30, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #11 | 9,800 | 07331206 |
| 628254Amendment | Oct 30, 2006 | Oct 30, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #11 | 9,800 | 07331206 |
| 628198 | Oct 27, 2006 | Oct 27, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #4 | 12,700 | 07331205 |
| 628183 | Oct 27, 2006 | Oct 27, 2006 | Southwestern Energy Prod. Co. | Smith | Newsome Unit 1 #12 | 12,500 | 42332152 |
| 628183Amendment | Oct 27, 2006 | Oct 27, 2006 | Southwestern Energy Prod. Co. | Smith | Newsome Unit 1 #12 | 12,500 | 42332152 |
| 626265 | Oct 27, 2006 | Oct 27, 2006 | Southwestern Energy Prod. Co. | Smith | Shaw Gas Unit 1 #13 | 12,100 | 42332140 |
| 627749 | Oct 18, 2006 | Oct 18, 2006 | Southwestern Energy Prod. Co. | Angelina | Sessions, J. W. Heirs #3 | 12,000 | 00530284 |
| 627664 | Oct 17, 2006 | Oct 17, 2006 | Southwestern Energy Prod. Co. | Angelina | Weddington #4 | 12,500 | 00530283 |
| 627495 | Oct 16, 2006 | Oct 16, 2006 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 1 #14 | 12,500 | 42332147 |
| 627338 | Oct 11, 2006 | Oct 11, 2006 | Southwestern Energy Prod. Co. | Smith | Waldrop Gas Unit 1 #15 | 12,500 | 42332146 |
| 625083 | Oct 6, 2006 | Oct 6, 2006 | Southwestern Energy Prod. Co. | Smith | Waldrop Gas Unit 1 #11 | 12,600 | 42332133 |
| 625083Amendment | Oct 6, 2006 | Oct 6, 2006 | Southwestern Energy Prod. Co. | Smith | Waldrop Gas Unit 1 #11 | 12,600 | 42332133 |
| 626581 | Sep 26, 2006 | Sep 26, 2006 | Southwestern Energy Prod. Co. | Cherokee | Barnes Gas Unit 1 #6 | 12,600 | 07331200 |
| 626581Amendment | Sep 26, 2006 | Sep 26, 2006 | Southwestern Energy Prod. Co. | Cherokee | Barnes Gas Unit 1 #6 | 12,600 | 07331200 |
| 626110 | Sep 18, 2006 | Sep 18, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #9 | 12,250 | 42332139 |
| 626091 | Sep 18, 2006 | Sep 18, 2006 | Southwestern Energy Prod. Co. | Smith | J. F. Ware Gas Unit 1 #12 | 12,250 | 42332138 |
| 625692 | Sep 11, 2006 | Sep 11, 2006 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #10 | 12,400 | 42332136 |
| 625681 | Sep 11, 2006 | Sep 11, 2006 | Southwestern Energy Prod. Co. | Smith | Jesse Randolph Odom Gas Unit 1 #12 | 12,500 | 42332135 |
| 625311 | Sep 1, 2006 | Sep 1, 2006 | Southwestern Energy Prod. Co. | Cherokee | Barnes Gas Unit #1 #5 | 12,500 | 07331195 |
| 624871 | Aug 24, 2006 | Aug 24, 2006 | Southwestern Energy Prod. Co. | Nacogdoches | Blount, L. F. #2 | 12,700 | 34732370 |
| 624653 | Aug 21, 2006 | Aug 21, 2006 | Southwestern Energy Prod. Co. | Smith | Sallie M. Warren Hrs. Gas Unit 1 #13 | 12,400 | 42332132 |
| 624518 | Aug 17, 2006 | Aug 17, 2006 | Southwestern Energy Prod. Co. | Cherokee | Barnes Gas Unit 1 #4 | 12,550 | 07331188 |
| 624457 | Aug 16, 2006 | Aug 16, 2006 | Southwestern Energy Prod. Co. | Nueces | State Tract 433 Gas Unit #1 | 8,500 | 35533437 |
| 624405 | Aug 16, 2006 | Aug 16, 2006 | Southwestern Energy Prod. Co. | Nacogdoches | Reavley #3 | 12,200 | 34732364 |
| 624279 | Aug 14, 2006 | Aug 14, 2006 | Southwestern Energy Prod. Co. | Cherokee | Afton Thrash Unit 1 #15 | 12,600 | 07331186 |
| 624013 | Aug 8, 2006 | Aug 8, 2006 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #6 | 12,400 | 42332130 |
| 623850 | Aug 7, 2006 | Aug 7, 2006 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #8 | 12,300 | 42332129 |
| 623505 | Jul 31, 2006 | Jul 31, 2006 | Southwestern Energy Prod. Co. | Duval | Duval County Ranch Co.-K- #45 | 5,500 | 13131512 |
| 622911 | Jul 20, 2006 | Jul 20, 2006 | Southwestern Energy Prod. Co. | Smith | Jesse Randolph Odom Gas Unit 1 #6 | 12,500 | 42332124 |
| 622911Amendment | Jul 20, 2006 | Jul 20, 2006 | Southwestern Energy Prod. Co. | Smith | Jesse Randolph Odom Gas Unit 1 #6 | 12,500 | 42332124 |
| 622459 | Jul 13, 2006 | Jul 13, 2006 | Southwestern Energy Prod. Co. | Cherokee | Hill, J. C. #2 | 11,900 | 07331181 |
| 622456 | Jul 13, 2006 | Jul 13, 2006 | Southwestern Energy Prod. Co. | Smith | Sallie M. Warren Hrs. Gas Unit 1 #12 | 12,400 | 42332123 |
| 622245 | Jul 11, 2006 | Jul 11, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #17 | 12,300 | 42332122 |
| 622245Amendment | Jul 11, 2006 | Jul 11, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #17 | 12,300 | 42332122 |
| 621742 | Jun 29, 2006 | Jun 29, 2006 | Southwestern Energy Prod. Co. | Smith | Newsome Unit 1 #17 | 12,200 | 42332120 |
| 621736 | Jun 28, 2006 | Jun 28, 2006 | Southwestern Energy Prod. Co. | Smith | Morby Unit 1 #16 | 12,300 | 42332119 |
| 621236 | Jun 20, 2006 | Jun 20, 2006 | Southwestern Energy Prod. Co. | Smith | Arnold Gas Unit 1 #13 | 12,000 | 42332117 |
| 620902 | Jun 14, 2006 | Jun 14, 2006 | Southwestern Energy Prod. Co. | Smith | Waldrop Gas Unit 1 #17 | 12,360 | 42332113 |
| 620887 | Jun 14, 2006 | Jun 14, 2006 | Southwestern Energy Prod. Co. | Smith | Sallie M. Warren Hrs. Gas Unit 1 #9 | 12,200 | 42332112 |
| 620886 | Jun 14, 2006 | Jun 14, 2006 | Southwestern Energy Prod. Co. | Nacogdoches | Griffith Heirs #3 | 11,900 | 34732308 |
| 620881 | Jun 14, 2006 | Jun 14, 2006 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #7 | 12,475 | 42332111 |
| 620881Amendment | Jun 14, 2006 | Jun 14, 2006 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #7 | 12,475 | 42332111 |
| 620630 | Jun 8, 2006 | Jun 8, 2006 | Southwestern Energy Prod. Co. | Smith | Morby Unit 1 #15 | 12,200 | 42332109 |
| 618162 | Jun 7, 2006 | Jun 7, 2006 | Southwestern Energy Prod. Co. | Smith | Jerry Cross Gas Unit 1 #3 | 12,250 | 42332095 |
| 618162Amendment | Jun 7, 2006 | Jun 7, 2006 | Southwestern Energy Prod. Co. | Smith | Jerry Cross Gas Unit 1 #3 | 12,250 | 42332095 |
| 619938 | May 26, 2006 | May 26, 2006 | Southwestern Energy Prod. Co. | Smith | Kickapoo Creek Gas Unit 1 #16 | 12,100 | 42332106 |
| 619936 | May 26, 2006 | May 26, 2006 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #5 | 12,450 | 42332105 |
| 619485 | May 18, 2006 | May 18, 2006 | Southwestern Energy Prod. Co. | Smith | Newsome Unit 1 #14 | 12,500 | 42332104 |
| 619051 | May 10, 2006 | May 10, 2006 | Southwestern Energy Prod. Co. | Smith | Grady Wilson Gas Unit 1 #14 | 12,450 | 42332103 |
| 619048 | May 10, 2006 | May 10, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #12 | 12,300 | 42332102 |
| 619046 | May 10, 2006 | May 10, 2006 | Southwestern Energy Prod. Co. | Smith | Morby Unit 1 #14 | 12,200 | 42332101 |
| 618801 | May 8, 2006 | May 8, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #10 | 12,250 | 42332100 |
| 618801Amendment | May 8, 2006 | May 8, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #10 | 12,250 | 42332100 |
| 618798 | May 8, 2006 | May 8, 2006 | Southwestern Energy Prod. Co. | Smith | Kirkpatrick Gas Unit 1 #3 | 12,300 | 42332099 |
| 618723 | May 5, 2006 | May 5, 2006 | Southwestern Energy Prod. Co. | Smith | Vernon B. Wilson Gas Unit 1 #17 | 12,200 | 42332098 |
| 618541 | May 2, 2006 | May 2, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #13 | 12,450 | 42332097 |
| 617990 | Apr 24, 2006 | Apr 24, 2006 | Southwestern Energy Prod. Co. | Smith | Jerry Cross Gas Unit 1 #13 | 12,400 | 42332094 |
| 616414 | Apr 21, 2006 | Apr 21, 2006 | Southwestern Energy Prod. Co. | Smith | Jesse Randolph Odom Gas Unit 1 #5 | 12,500 | 42332088 |
| 617223 | Apr 11, 2006 | Apr 11, 2006 | Southwestern Energy Prod. Co. | Smith | Perry Gas Unit 1 #7 | 12,400 | 42332092 |
| 617219 | Apr 11, 2006 | Apr 11, 2006 | Southwestern Energy Prod. Co. | Smith | Grady Wilson GU 1 #15 | 12,300 | 42332091 |
| 616485 | Mar 28, 2006 | Mar 28, 2006 | Southwestern Energy Prod. Co. | Smith | McMoyle Unit 1 #14 | 12,600 | 42332089 |
| 616484 | Mar 28, 2006 | Mar 28, 2006 | Southwestern Energy Prod. Co. | Nacogdoches | Holt Heirs #1 | 12,000 | 34732249 |
| 616229 | Mar 22, 2006 | Mar 22, 2006 | Southwestern Energy Prod. Co. | Culberson | State Street State #701 | 9,500 | 10932271 |
| 615241 | Mar 6, 2006 | Mar 6, 2006 | Southwestern Energy Prod. Co. | Nacogdoches | Isaac #2 | 12,200 | 34732236 |
| 612385 | Mar 2, 2006 | Mar 2, 2006 | Southwestern Energy Prod. Co. | Smith | Newsome Unit 1 #11 | 12,200 | 42332070 |
| 612385Amendment | Mar 2, 2006 | Mar 2, 2006 | Southwestern Energy Prod. Co. | Smith | Newsome Unit 1 #11 | 12,200 | 42332070 |