| 614861 | Mar 3, 2006 | Mar 3, 2006 | XTO Energy Inc. | Harrison | Bivins Eastman Gas Unit #420334478 | 13,000 |
| 614860 | Mar 3, 2006 | Mar 3, 2006 | XTO Energy Inc. | Leon | Holmes "S" #628931562 | 15,500 |
| 614996 | Mar 1, 2006 | Mar 1, 2006 | XTO Energy Inc. | Tarrant | Hunter Ferrell Unit #1HH43931539 | 11,000 |
| 614996Amendment | Mar 1, 2006 | Mar 1, 2006 | XTO Energy Inc. | Tarrant | Hunter Ferrell Unit #1HH43931539 | 11,000 |
| 614778 | Mar 1, 2006 | Mar 1, 2006 | XTO Energy Inc. | Ector | Goldsmith, C. A. Etal #168013539060 | 8,350 |
| 614778Amendment | Mar 1, 2006 | Mar 1, 2006 | XTO Energy Inc. | Ector | Goldsmith, C. A. Etal #168013539060 | 8,350 |
| 614769 | Mar 1, 2006 | Mar 1, 2006 | XTO Energy Inc. | Ector | Goldsmith, C.A., Etal #161713539052 | 7,200 |
| 614760 | Mar 1, 2006 | Mar 1, 2006 | XTO Energy Inc. | Andrews | State University -At- #600338191 | 10,716 |
| 614951 | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Manning-Trwd Unit #1HH43931538 | 11,000 |
| 614951Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Manning-Trwd Unit #1HH43931538 | 11,000 |
| 614951Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Manning Trwd a Unit #1HH43931538 | 11,000 |
| 614949 | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Crumbie Unit #A 1HH43931537 | 11,000 |
| 614949Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Crumbie Unit #A 1HH43931537 | 11,000 |
| 614948 | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Martin, Don D. #1HH43931536 | 11,000 |
| 614948Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Martin, Don D. #1HH43931536 | 11,000 |
| 614943 | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Hugh White Unit #7HH43931535 | 11,000 |
| 614943Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Hugh White Unit #7HH43931535 | 11,000 |
| 614943Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | Hugh White Unit #7HH43931535 | 11,000 |
| 614943Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Tarrant | White, Hugh #7HH43931535 | 11,000 |
| 614936 | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Parker | Maudi Walsh Roe #C 1HH36733932 | 8,900 |
| 614889 | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Parker | Clary Unit #1HH36733930 | 11,000 |
| 614889Amendment | Feb 28, 2006 | Feb 28, 2006 | XTO Energy Inc. | Parker | Clary Unit #1HH36733930 | 11,000 |
| 614934 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #G 2HH36733931 | 8,900 |
| 614751 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Yoakum | Armstrong, Annie #2050135312 | 8,900 |
| 614749 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Yoakum | Armstrong, Annie #2150135313 | 8,900 |
| 614748 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Yoakum | Armstrong, Annie #1950135311 | 8,900 |
| 614604 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Limestone | Running Branch Gas Unit #129331800 | 14,200 |
| 614604Amendment | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Limestone | Running Branch Gas Unit #129331800 | 14,200 |
| 614471 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Robertson | Pye Gas Unit #139531108 | 15,200 |
| 614469 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Robertson | Hill Gas Unit #139531107 | 16,000 |
| 614315 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Upshur | Jsmj Investments Gas Unit #145931305 | 12,300 |
| 614091 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Andrews | University "9" -B- #8HH00338384 | 10,500 |
| 614405 | Feb 24, 2006 | Feb 24, 2006 | XTO Energy Inc. | Limestone | Reed "R" No. 1 Unit #1729331798 | 13,500 |
| 614405Amendment | Feb 24, 2006 | Feb 24, 2006 | XTO Energy Inc. | Limestone | Reed "R" No. 1 Unit #1729331798 | 13,500 |
| 614311 | Feb 24, 2006 | Feb 24, 2006 | XTO Energy Inc. | Robertson | Thomas Phillips Gas Unit #139531104 | 14,500 |
| 614207 | Feb 22, 2006 | Feb 22, 2006 | XTO Energy Inc. | Yoakum | Mahoney, H.O. #11750135309 | 8,700 |
| 614204 | Feb 22, 2006 | Feb 22, 2006 | XTO Energy Inc. | Yoakum | Mahoney, H.O. #10550135310 | 8,700 |
| 614545 | Feb 21, 2006 | Feb 21, 2006 | XTO Energy Inc. | Tarrant | Brumbaugh #10HH43931529 | 11,000 |
| 614545Amendment | Feb 21, 2006 | Feb 21, 2006 | XTO Energy Inc. | Tarrant | Brumbaugh #10HH43931529 | 11,000 |
| 613953 | Feb 17, 2006 | Feb 17, 2006 | XTO Energy Inc. | Gaines | Russell (Clearfork 7000) Unit #41416536501 | 8,500 |
| 613886 | Feb 17, 2006 | Feb 17, 2006 | XTO Energy Inc. | Tarrant | Arterburn & Crow Unit #3HH43931517 | 11,000 |
| 613886Amendment | Feb 17, 2006 | Feb 17, 2006 | XTO Energy Inc. | Tarrant | Arterburn & Crow Unit #3HH43931517 | 11,000 |
| 614350 | Feb 16, 2006 | Feb 16, 2006 | XTO Energy Inc. | Andrews | State of Texas DD #1HH00307426 | 11,300 |
| 614350Amendment | Feb 16, 2006 | Feb 16, 2006 | XTO Energy Inc. | Andrews | State of Texas DD #1HH00307426 | 11,300 |
| 613958 | Feb 16, 2006 | Feb 16, 2006 | XTO Energy Inc. | Gaines | Russell (Clearfork 7000) Unit #43416536502 | 9,300 |
| 613851 | Feb 16, 2006 | Feb 16, 2006 | XTO Energy Inc. | Terry | Prentice Northeast Unit #80244532115 | 7,600 |
| 613827 | Feb 16, 2006 | Feb 16, 2006 | XTO Energy Inc. | Terry | Prentice Northeast Unit #58844532114 | 7,600 |
| 613822 | Feb 16, 2006 | Feb 16, 2006 | XTO Energy Inc. | Terry | Prentice Northeast Unit #52044532117 | 7,400 |
| 614226 | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Parker | Wiley #6HH36733919 | 11,000 |
| 614226Amendment | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Parker | Wiley #6HH36733919 | 11,000 |
| 614225 | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Tarrant | Walsh Ranch West #S 3HH43931527 | 8,000 |
| 614224 | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Tarrant | Trbp #1HH43931526 | 11,000 |
| 614224Amendment | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Tarrant | Trbp #1HH43931526 | 11,000 |
| 614224Amendment | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Tarrant | Trbp #1HH43931526 | 11,000 |
| 614224Amendment | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Tarrant | Trbp #1HH43931526 | 11,000 |
| 612431 | Feb 15, 2006 | Feb 15, 2006 | XTO Energy Inc. | Robertson | G. H. Ingram Gas Unit 1 #139531095 | 15,000 |
| 613682 | Feb 14, 2006 | Feb 14, 2006 | XTO Energy Inc. | Gaines | Russell (Clearfork 7000) Unit #41816536497 | 9,000 |
| 614038 | Feb 13, 2006 | Feb 13, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #G 1HH36733917 | 8,000 |
| 613704 | Feb 13, 2006 | Feb 13, 2006 | XTO Energy Inc. | Gaines | Russell (Clearfork 7000) Unit #43816536500 | 9,000 |
| 613698 | Feb 13, 2006 | Feb 13, 2006 | XTO Energy Inc. | Gaines | Russell (Clearfork 7000) Unit #43116536499 | 9,000 |
| 614016 | Feb 10, 2006 | Feb 10, 2006 | XTO Energy Inc. | Leon | Gail King #23HH28931559 | 18,500 |
| 613981 | Feb 10, 2006 | Feb 10, 2006 | XTO Energy Inc. | Tarrant | Union Pacific #1HH43931520 | 11,000 |
| 613981Amendment | Feb 10, 2006 | Feb 10, 2006 | XTO Energy Inc. | Tarrant | Union Pacific #1HH43931520 | 11,000 |
| 613981Amendment | Feb 10, 2006 | Feb 10, 2006 | XTO Energy Inc. | Tarrant | Union Pacific #1HH43931520 | 11,000 |
| 613531 | Feb 9, 2006 | Feb 9, 2006 | XTO Energy Inc. | Freestone | J. A. Gilliam GU II #916133472 | 12,800 |
| 613531Amendment | Feb 9, 2006 | Feb 9, 2006 | XTO Energy Inc. | Freestone | J. A. Gilliam GU II #916133472 | 12,800 |
| 613795 | Feb 8, 2006 | Feb 8, 2006 | XTO Energy Inc. | Terry | Prentice Northeast Unit #73144532113 | 7,600 |
| 613362 | Feb 7, 2006 | Feb 7, 2006 | XTO Energy Inc. | Freestone | H. D. Black Gas Unit #316131911 | 12,600 |
| 613361 | Feb 7, 2006 | Feb 7, 2006 | XTO Energy Inc. | Panola | Holmes, S.L. #2SW36536056 | 6,200 |
| 613623 | Feb 6, 2006 | Feb 6, 2006 | XTO Energy Inc. | Ector | Goldsmith San Andres Unit #165413539022 | 6,000 |
| 613462 | Feb 6, 2006 | Feb 6, 2006 | XTO Energy Inc. | Tarrant | Tcu Unit #3HH43931503 | 11,000 |
| 613608 | Feb 3, 2006 | Feb 3, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #H 2HH36733907 | 8,000 |
| 613608Amendment | Feb 3, 2006 | Feb 3, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #H 2HH36733907 | 8,000 |
| 613606 | Feb 3, 2006 | Feb 3, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #H 1HH36733908 | 8,000 |
| 613606Amendment | Feb 3, 2006 | Feb 3, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #H 1HH36733908 | 8,000 |
| 613597 | Feb 3, 2006 | Feb 3, 2006 | XTO Energy Inc. | Tarrant | Walsh Ranch West #S 2HH43931513 | 8,000 |
| 613592 | Feb 3, 2006 | Feb 3, 2006 | XTO Energy Inc. | Andrews | University 9 "AB" #4HH00300289 | 10,600 |
| 613487 | Feb 2, 2006 | Feb 2, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #I 3HH36733901 | 8,000 |
| 613247 | Feb 1, 2006 | Feb 1, 2006 | XTO Energy Inc. | Ector | Goldsmith, C.A. Etal #81813501190 | 11,500 |
| 613060 | Feb 1, 2006 | Feb 1, 2006 | XTO Energy Inc. | Freestone | J. A. Gilliam Unit #1416133469 | 13,500 |
| 613060Amendment | Feb 1, 2006 | Feb 1, 2006 | XTO Energy Inc. | Freestone | J. A. Gilliam Unit #1416133469 | 13,500 |
| 613295 | Jan 31, 2006 | Jan 31, 2006 | XTO Energy Inc. | Tarrant | Panagopoulos Unit #1HH43931497 | 11,000 |
| 613295Amendment | Jan 31, 2006 | Jan 31, 2006 | XTO Energy Inc. | Tarrant | Panagopoulos Unit #1HH43931497 | 11,000 |
| 613294 | Jan 31, 2006 | Jan 31, 2006 | XTO Energy Inc. | Johnson | Harper Cattle #C 3HH25130763 | 11,000 |
| 613294Amendment | Jan 31, 2006 | Jan 31, 2006 | XTO Energy Inc. | Johnson | Harper Cattle #C 3HH25130763 | 11,000 |
| 613107 | Jan 31, 2006 | Jan 31, 2006 | XTO Energy Inc. | Freestone | Orand "a" Gas Unit #216133470 | 13,400 |
| 613238 | Jan 30, 2006 | Jan 30, 2006 | XTO Energy Inc. | Andrews | Texas University "CC" #3000339805 | 14,000 |
| 613199 | Jan 27, 2006 | Jan 27, 2006 | XTO Energy Inc. | Tarrant | Moritz C Unit #3HH43931494 | 11,000 |
| 613199Amendment | Jan 27, 2006 | Jan 27, 2006 | XTO Energy Inc. | Tarrant | Moritz C Unit #3HH43931494 | 11,000 |
| 613186 | Jan 27, 2006 | Jan 27, 2006 | XTO Energy Inc. | Tarrant | Johnson Hubbell #2HH43931493 | 11,000 |
| 613186Amendment | Jan 27, 2006 | Jan 27, 2006 | XTO Energy Inc. | Tarrant | Johnson-Hubbell #2HH43931493 | 11,000 |
| 613179 | Jan 27, 2006 | Jan 27, 2006 | XTO Energy Inc. | Parker | Walsh Cresson Ranch #I 2HH36733892 | 8,000 |
| 613165 | Jan 27, 2006 | Jan 27, 2006 | XTO Energy Inc. | Andrews | University "AA" #500339796 | 11,600 |
| 612624 | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Limestone | Reed "P" No. 1 Gas Unit #1029331794 | 13,800 |
| 612624Amendment | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Limestone | Reed "P" No. 1 Gas Unit #1029331794 | 13,800 |
| 612528 | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Limestone | Gross, Richard H. et Al #929331793 | 13,500 |
| 612528Amendment | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Limestone | Gross, Richard H. et Al #929331793 | 13,500 |
| 612528Amendment | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Limestone | Gross, Richard H. et Al #929331793 | 13,500 |
| 612527 | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Freestone | Orand "a" Gas Unit #316133464 | 13,200 |
| 612527Amendment | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Freestone | Orand "a" Gas Unit #316133464 | 13,400 |