| 673261Amendment | Oct 21, 2008 | Oct 21, 2008 | Chesapeake Operating, Inc. | Welliver #2HH | 9,000 | 25133390 |
| 673255 | Oct 21, 2008 | Oct 21, 2008 | Chesapeake Operating, Inc. | Mize Family #24HH | 9,000 | 25133386 |
| 665085Amendment | Oct 21, 2008 | Oct 21, 2008 | Chesapeake Operating, Inc. | Mize Family #33HH | 9,000 | 25133089 |
| 673154 | Oct 20, 2008 | Oct 20, 2008 | Chesapeake Operating, Inc. | Welliver #6HH | 9,000 | 25133385 |
| 673142 | Oct 20, 2008 | Oct 20, 2008 | EOG Resources, Inc. | Raam Unit #7HH | 10,000 | 25133384 |
| 673142Amendment | Oct 20, 2008 | Oct 20, 2008 | EOG Resources, Inc. | Raam Unit #7HH | 10,000 | 25133384 |
| 673142Amendment | Oct 20, 2008 | Oct 20, 2008 | EOG Resources, Inc. | Raam #7HH | 10,000 | 25133384 |
| 673131 | Oct 20, 2008 | Oct 20, 2008 | Chesapeake Operating, Inc. | Kenah #8HH | 9,000 | 25133382 |
| 673117 | Oct 20, 2008 | Oct 20, 2008 | EOG Resources, Inc. | Raam Unit #5HH | 10,000 | 25133381 |
| 673117Amendment | Oct 20, 2008 | Oct 20, 2008 | EOG Resources, Inc. | Raam Unit #5HH | 10,000 | 25133381 |
| 673117Amendment | Oct 20, 2008 | Oct 20, 2008 | EOG Resources, Inc. | Raam #5HH | 10,000 | 25133381 |
| 657074Amendment | Oct 20, 2008 | Oct 20, 2008 | Chesapeake Operating, Inc. | Trinity Forge #1HH | 9,000 | 25132735 |
| 672952 | Oct 17, 2008 | Oct 17, 2008 | XTO Energy Inc. | Graystone Unit #3HH | 11,000 | 25133376 |
| 672952Amendment | Oct 17, 2008 | Oct 17, 2008 | XTO Energy Inc. | Graystone Unit #3HH | 11,000 | 25133376 |
| 672603 | Oct 16, 2008 | Oct 16, 2008 | Richey, Ray Management Co., Inc. | Space Acres Unit #1HH | 10,600 | 25133366 |
| 672590 | Oct 16, 2008 | Oct 16, 2008 | Chesapeake Operating, Inc. | Mattingly #4HH | 9,000 | 25133370 |
| 660441Amendment | Oct 16, 2008 | Oct 16, 2008 | Williams Prod. Gulf Coast, L.P. | Bransom #3HH | 7,705 | 25132896 |
| 672839 | Oct 15, 2008 | Oct 15, 2008 | XTO Energy Inc. | Graystone Unit #2HH | 11,000 | 25133375 |
| 672839Amendment | Oct 15, 2008 | Oct 15, 2008 | XTO Energy Inc. | Graystone Unit #2HH | 11,000 | 25133375 |
| 672785 | Oct 15, 2008 | Oct 15, 2008 | Williams Prod. Gulf Coast, L.P. | Bransom South #5HH | 8,120 | 25133378 |
| 672783 | Oct 15, 2008 | Oct 15, 2008 | Williams Prod. Gulf Coast, L.P. | Bransom South #4HH | 8,120 | 25133377 |
| 672753 | Oct 15, 2008 | Oct 15, 2008 | Chesapeake Operating, Inc. | Mize Family #27HH | 9,000 | 25133374 |
| 672708 | Oct 15, 2008 | Oct 15, 2008 | Rimrock Energy, LLC | Double Dollar Lease #C 7HH | 8,500 | 25133373 |
| 672697 | Oct 15, 2008 | Oct 15, 2008 | Rimrock Energy, LLC | Double Dollar Lease #C 2HH | 8,500 | 25133371 |
| 672575 | Oct 15, 2008 | Oct 15, 2008 | Chesapeake Operating, Inc. | Goex #10HH | 9,000 | 25133364 |
| 672702 | Oct 14, 2008 | Oct 14, 2008 | Rimrock Energy, LLC | Double Dollar Lease #C 6HH | 8,500 | 25133372 |
| 672354 | Oct 14, 2008 | Oct 14, 2008 | XTO Energy Inc. | Harper Cattle C Unit #11BHH | 11,000 | 25133380 |
| 672284 | Oct 14, 2008 | Oct 14, 2008 | Devon Energy Production Co, L.P. | Griswell #2HH | 9,000 | 25133379 |
| 672284Amendment | Oct 14, 2008 | Oct 14, 2008 | Devon Energy Production Co, L.P. | Griswell-Nowlin (SA) #2H | 9,000 | 25133379 |
| 671070 | Oct 14, 2008 | Oct 14, 2008 | Chief Oil & Gas LLC | Springwood Unit #5HH | 8,900 | 25133289 |
| 672627 | Oct 13, 2008 | Oct 13, 2008 | XTO Energy Inc. | McKee Unit #1HH | 11,000 | 25133369 |
| 672627Amendment | Oct 13, 2008 | Oct 13, 2008 | XTO Energy Inc. | McKee Unit #1HH | 11,000 | 25133369 |
| 672613 | Oct 13, 2008 | Oct 13, 2008 | Arrington,david H. Oil & Gas,inc | Platinum Blonde #2HH | 8,500 | 25133368 |
| 672613Amendment | Oct 13, 2008 | Oct 13, 2008 | Arrington,david H. Oil & Gas,inc | Platinum Blonde #2HH | 8,500 | 25133368 |
| 672606 | Oct 13, 2008 | Oct 13, 2008 | Arrington,david H. Oil & Gas,inc | Platinum Blonde #1HH | 8,500 | 25133367 |
| 672581 | Oct 13, 2008 | Oct 13, 2008 | Chesapeake Operating, Inc. | Johns Manville #8HH | 9,000 | 25133365 |
| 672312 | Oct 13, 2008 | Oct 13, 2008 | Devon Energy Production Co, L.P. | Griswell #5HH | 9,000 | 25133359 |
| 672305 | Oct 13, 2008 | Oct 13, 2008 | Devon Energy Production Co, L.P. | Griswell #4HH | 9,000 | 25133358 |
| 672305Amendment | Oct 13, 2008 | Oct 13, 2008 | Devon Energy Production Co, L.P. | Griswell #4H | 9,000 | 25133358 |
| 672302 | Oct 13, 2008 | Oct 13, 2008 | Devon Energy Production Co, L.P. | Griswell #3HH | 9,000 | 25133357 |
| 672302Amendment | Oct 13, 2008 | Oct 13, 2008 | Devon Energy Production Co, L.P. | Griswell-Nowlin (SA) #3H | 9,000 | 25133357 |
| 659221Amendment | Oct 13, 2008 | Oct 13, 2008 | Chesapeake Operating, Inc. | Tantarra Estates #4HH | 9,000 | 25132850 |
| 672496 | Oct 11, 2008 | Oct 11, 2008 | Williams Prod. Gulf Coast, L.P. | Duckett #1HH | 8,500 | 25133363 |
| 672451 | Oct 11, 2008 | Oct 11, 2008 | EOG Resources, Inc. | KTV Caddo Unit #4HH | 10,000 | 25133362 |
| 672235 | Oct 10, 2008 | Oct 10, 2008 | Chesapeake Operating, Inc. | Chevy #3HH | 9,000 | 25133353 |
| 672235Amendment | Oct 10, 2008 | Oct 10, 2008 | Chesapeake Operating, Inc. | Chevy #3HH | 9,000 | 25133353 |
| 672233 | Oct 10, 2008 | Oct 10, 2008 | Chesapeake Operating, Inc. | Chevy #2HH | 9,000 | 25133352 |
| 671672 | Oct 10, 2008 | Oct 10, 2008 | Chesapeake Operating, Inc. | Forsberg #5HH | 9,000 | 25133338 |
| 661596Amendment | Oct 10, 2008 | Oct 10, 2008 | XTO Energy Inc. | KWS Unit #1HH | 11,500 | 25132930 |
| 672207 | Oct 9, 2008 | Oct 9, 2008 | EOG Resources, Inc. | Schultz B Unit #3HH | 10,000 | 25133350 |
| 672204 | Oct 9, 2008 | Oct 9, 2008 | EOG Resources, Inc. | Schultz B Unit #2HH | 10,000 | 25133351 |
| 672060 | Oct 8, 2008 | Oct 8, 2008 | EOG Resources, Inc. | Southard Farms Unit #5HH | 10,000 | 25133346 |
| 672056 | Oct 8, 2008 | Oct 8, 2008 | EOG Resources, Inc. | Southard Farms Unit #4HH | 10,000 | 25133347 |
| 671367 | Oct 8, 2008 | Oct 8, 2008 | Devon Energy Production Co, L.P. | Griswell #1HH | 9,000 | 25133324 |
| 671367Amendment | Oct 8, 2008 | Oct 8, 2008 | Devon Energy Production Co, L.P. | Griswell-Nowlin (SA) #1H | 9,000 | 25133324 |
| 671948 | Oct 7, 2008 | Oct 7, 2008 | Chesapeake Operating, Inc. | Otra Baca B #17HH | 9,000 | 25133345 |
| 671948Amendment | Oct 7, 2008 | Oct 7, 2008 | Chesapeake Operating, Inc. | Otra Baca B #17HH | 9,000 | 25133345 |
| 671888 | Oct 6, 2008 | Oct 6, 2008 | Chesapeake Operating, Inc. | Chevy #1HH | 9,000 | 25133344 |
| 671862 | Oct 6, 2008 | Oct 6, 2008 | EOG Resources, Inc. | Lowrance Unit #2HH | 10,000 | 25133343 |
| 671853 | Oct 6, 2008 | Oct 6, 2008 | EOG Resources, Inc. | Lowrance B Unit #2HH | 10,000 | 25133342 |
| 671204 | Oct 6, 2008 | Oct 6, 2008 | Devon Energy Production Co, L.P. | Bennett, Donald #12HH | 9,000 | 25133317 |
| 671813 | Oct 4, 2008 | Oct 4, 2008 | Range Production Company | Ochoa #1HH | 9,000 | 25133340 |
| 671746 | Oct 4, 2008 | Oct 4, 2008 | Williams Prod. Gulf Coast, L.P. | Crouch Dairy Unit #7HH | 7,600 | 25133341 |
| 671745 | Oct 4, 2008 | Oct 4, 2008 | Williams Prod. Gulf Coast, L.P. | Crouch Diary Unit #6HH | 7,600 | 25133339 |
| 671648 | Oct 4, 2008 | Oct 4, 2008 | Devon Energy Production Co, L.P. | Beustring #4HH | 9,000 | 25133337 |
| 671628 | Oct 4, 2008 | Oct 4, 2008 | Devon Energy Production Co, L.P. | Beustring #3HH | 9,000 | 25133336 |
| 671556 | Oct 4, 2008 | Oct 4, 2008 | Bosque Disposal Systems, LLC | Luna #2 | 11,000 | 25133335 |
| 671556Amendment | Oct 4, 2008 | Oct 4, 2008 | Bosque Disposal Systems, LLC | Luna #2 | 11,000 | 25133335 |
| 671458 | Oct 4, 2008 | Oct 4, 2008 | Devon Energy Production Co, L.P. | B. R. Hurd #3HH | 9,000 | 25133332 |
| 671454 | Oct 4, 2008 | Oct 4, 2008 | Devon Energy Production Co, L.P. | B. R. Hurd #1HH | 9,000 | 25133333 |
| 671448 | Oct 4, 2008 | Oct 4, 2008 | XTO Energy Inc. | Williams Smith Unit #A 4HH | 10,500 | 25133334 |
| 671455 | Oct 3, 2008 | Oct 3, 2008 | Devon Energy Production Co, L.P. | B. R. Hurd #2HH | 9,000 | 25133331 |
| 671396 | Oct 3, 2008 | Oct 3, 2008 | EOG Resources, Inc. | Wilson Unit #10HH | 10,000 | 25133328 |
| 671394 | Oct 3, 2008 | Oct 3, 2008 | Chesapeake Operating, Inc. | Upchurch #8HH | 9,000 | 25133330 |
| 671394Amendment | Oct 3, 2008 | Oct 3, 2008 | Chesapeake Operating, Inc. | Upchurch #8HH | 9,000 | 25133330 |
| 671392 | Oct 3, 2008 | Oct 3, 2008 | Chesapeake Operating, Inc. | Upchurch #7HH | 9,000 | 25133329 |
| 671392Amendment | Oct 3, 2008 | Oct 3, 2008 | Chesapeake Operating, Inc. | Upchurch #7HH | 9,000 | 25133329 |
| 671391 | Oct 3, 2008 | Oct 3, 2008 | Chesapeake Operating, Inc. | Upchurch #6HH | 9,000 | 25133326 |
| 671391Amendment | Oct 3, 2008 | Oct 3, 2008 | Chesapeake Operating, Inc. | Upchurch #6HH | 9,000 | 25133326 |
| 671380 | Oct 3, 2008 | Oct 3, 2008 | EOG Resources, Inc. | Wilson Unit #11HH | 10,000 | 25133327 |
| 671360 | Oct 3, 2008 | Oct 3, 2008 | EOG Resources, Inc. | Wilson Unit #9HH | 10,000 | 25133325 |
| 671363 | Oct 2, 2008 | Oct 2, 2008 | Devon Energy Production Co, L.P. | Hill Top Ranch #8HH | 9,000 | 25133323 |
| 671363Amendment | Oct 2, 2008 | Oct 2, 2008 | Devon Energy Production Co, L.P. | Hill Top Ranch #8HH | 9,000 | 25133323 |
| 671348 | Oct 2, 2008 | Oct 2, 2008 | EOG Resources, Inc. | Wilson Unit #8HH | 10,000 | 25133322 |
| 671301 | Oct 2, 2008 | Oct 2, 2008 | Devon Energy Production Co, L.P. | Hooper #10HH | 9,000 | 25133321 |
| 671298 | Oct 2, 2008 | Oct 2, 2008 | Chesapeake Operating, Inc. | Little Hoss #Q 1HH | 9,000 | 25133320 |
| 671231 | Oct 2, 2008 | Oct 2, 2008 | Bosque Disposal Systems, LLC | Rose #2 | 11,500 | 25133319 |
| 671186 | Oct 1, 2008 | Oct 1, 2008 | Chesapeake Operating, Inc. | City of Cleburne #9HH | 9,000 | 25133316 |
| 671185 | Oct 1, 2008 | Oct 1, 2008 | Chesapeake Operating, Inc. | City of Cleburne #8HH | 9,000 | 25133315 |
| 671182 | Oct 1, 2008 | Oct 1, 2008 | Chesapeake Operating, Inc. | City of Cleburne #7HH | 9,000 | 25133314 |
| 671110 | Oct 1, 2008 | Oct 1, 2008 | Rimrock Energy, LLC | Double Dollar Lease #C 5HH | 8,500 | 25133311 |
| 671102 | Oct 1, 2008 | Oct 1, 2008 | Rimrock Energy, LLC | Double Dollar Lease #C 4HH | 8,500 | 25133312 |
| 671055 | Sep 30, 2008 | Sep 30, 2008 | Rimrock Energy, LLC | Double Dollar Lease #C 3HH | 8,500 | 25133310 |
| 670902 | Sep 26, 2008 | Sep 26, 2008 | Devon Energy Production Co, L.P. | Moreno, Donna #1HH | 9,000 | 25133306 |
| 670880 | Sep 26, 2008 | Sep 26, 2008 | Chesapeake Operating, Inc. | Forsberg #4HH | 9,000 | 25133308 |
| 663600Amendment | Sep 26, 2008 | Sep 26, 2008 | Chesapeake Operating, Inc. | Shioleno #3HH | 9,000 | 25133037 |
| 670788 | Sep 25, 2008 | Sep 25, 2008 | Chesapeake Operating, Inc. | Clear Creek #7HH | 9,000 | 25133305 |
| 670787 | Sep 25, 2008 | Sep 25, 2008 | Chesapeake Operating, Inc. | Clear Creek #6HH | 9,000 | 25133304 |
| 670787Amendment | Sep 25, 2008 | Sep 25, 2008 | Chesapeake Operating, Inc. | Clear Creek #6HH | 9,000 | 25133304 |
| 670731 | Sep 25, 2008 | Sep 25, 2008 | Devon Energy Production Co, L.P. | Gill Crossing #4HH | 9,000 | 25133302 |