| 623901 | Aug 7, 2006 | Aug 7, 2006 | Petrohawk Operating Company | C.E. Heard "B" #25 | 5,500 | 02533420 |
| 623901Amendment | Aug 7, 2006 | Aug 7, 2006 | Petrohawk Operating Company | Heard, C. E. "B" #25 | 5,500 | 02533420 |
| 623804 | Aug 3, 2006 | Aug 3, 2006 | Jennings Exploration Company | Normanna Townsite Unit II #2 | 3,800 | 02533419 |
| 623461 | Jul 31, 2006 | Jul 31, 2006 | Welder Exploration & Prod., Inc. | O'Brien Ranch #1C | 5,000 | 02533417 |
| 623457 | Jul 31, 2006 | Jul 31, 2006 | Welder Exploration & Prod., Inc. | O'Brien Ranch #1A | 5,000 | 02533418 |
| 622965 | Jul 28, 2006 | Jul 28, 2006 | Enco Exploration Company | Collier G. U. #10 | 11,000 | 02502526 |
| 623164 | Jul 25, 2006 | Jul 25, 2006 | Welder Exploration & Prod., Inc. | O'Brien Ranch #1B | 5,000 | 02533416 |
| 622996 | Jul 24, 2006 | Jul 24, 2006 | Britanco, L.L.C. | Goree, Audrey C. #1C | 11,210 | 02531159 |
| 622653 | Jul 19, 2006 | Jul 19, 2006 | Tidal Petroleum, Inc. | Elliott #1 | 10,000 | 02533415 |
| 622283 | Jul 13, 2006 | Jul 13, 2006 | United Resources LP | Knight Ranch #1 | 11,000 | 02533414 |
| 622412 | Jul 12, 2006 | Jul 12, 2006 | Hughes, Dan A. Company, L.P. | Green, Helen #1 | 12,000 | 02533413 |
| 622412Amendment | Jul 12, 2006 | Jul 12, 2006 | Hughes, Dan A. Company, L.P. | Green, Helen #1 | 12,000 | 02533413 |
| 621648 | Jul 3, 2006 | Jul 3, 2006 | Dewbre Petroleum Corporation | Goree #1 | 9,000 | 02533411 |
| 621855 | Jun 30, 2006 | Jun 30, 2006 | Enduring Resources, LLC | Flame #1H | 13,080 | 02533412 |
| 621563 | Jun 29, 2006 | Jun 29, 2006 | Legend Natural Gas II, LP | Ray, George A. #104 | 9,000 | 02533125 |
| 621377 | Jun 27, 2006 | Jun 27, 2006 | Bridwell Oil Co. | Murphy, John -A- #7R | 3,400 | 02533410 |
| 620925 | Jun 16, 2006 | Jun 16, 2006 | Bridwell Oil Co. | Murphy, John #15 | 3,400 | 02533409 |
| 620924 | Jun 16, 2006 | Jun 16, 2006 | Bridwell Oil Co. | Murphy, Willie #11 | 3,400 | 02533408 |
| 620816 | Jun 16, 2006 | Jun 16, 2006 | Enco Exploration Company | Collier #8 | 2,000 | 02532072 |
| 620444 | Jun 16, 2006 | Jun 16, 2006 | Legend Natural Gas II, LP | Ray, George A. #99D | 9,000 | 02533032 |
| 620746 | Jun 15, 2006 | Jun 15, 2006 | West Tuleta Operating Corp. | Wtu Stauss #2 | 10,500 | 02533406 |
| 620987 | Jun 14, 2006 | Jun 14, 2006 | Petrohawk Operating Company | Heard, C.E. "B" #24 | 5,500 | 02533407 |
| 620987Amendment | Jun 14, 2006 | Jun 14, 2006 | Petrohawk Operating Company | Heard, C.E. "B" #24 | 5,500 | 02533407 |
| 620745 | Jun 12, 2006 | Jun 12, 2006 | Petrohawk Operating Company | Heard, C.E. "B" #27 | 5,500 | 02533405 |
| 620744 | Jun 12, 2006 | Jun 12, 2006 | Petrohawk Operating Company | Heard, C.E. "B" #26 | 5,500 | 02533404 |
| 620743 | Jun 12, 2006 | Jun 12, 2006 | Petrohawk Operating Company | Heard, C.E. "B" #23 | 5,500 | 02533403 |
| 619684 | May 31, 2006 | May 31, 2006 | Pioneer Natural Res. USA, Inc. | Tomasek Gas Unit #1H | 17,000 | 02500473 |
| 619486 | May 18, 2006 | May 18, 2006 | Tidal Petroleum, Inc. | Shelton #1 | 8,500 | 02533402 |
| 619062 | May 17, 2006 | May 17, 2006 | Tidal Petroleum, Inc. | Grissom Unit #4 | 10,500 | 02533401 |
| 619062Amendment | May 17, 2006 | May 17, 2006 | Tidal Petroleum, Inc. | Grissom Unit #4 | 10,500 | 02533401 |
| 618355 | May 9, 2006 | May 9, 2006 | West Tuleta Operating Corp. | Wtu Robinson #6 | 8,703 | 02533384 |
| 618314 | May 3, 2006 | May 3, 2006 | Pioneer Natural Res. USA, Inc. | Turner Gas Unit #7H | 17,000 | 02533246 |
| 618550 | May 2, 2006 | May 2, 2006 | Hughes, Dan A. Company, L.P. | Helm-Arburn Unit #1ST | 12,000 | 02533304 |
| 618409 | Apr 28, 2006 | Apr 28, 2006 | Anderson Oil Ltd | Eberstadt #7 | 5,900 | 02533400 |
| 617185 | Apr 11, 2006 | Apr 11, 2006 | Welder Exploration & Prod., Inc. | Breidenbach-Welder Unit #1 | 6,500 | 02533398 |
| 617182 | Apr 11, 2006 | Apr 11, 2006 | Welder Exploration & Prod., Inc. | Welder #1D | 6,500 | 02533397 |
| 617180 | Apr 11, 2006 | Apr 11, 2006 | Welder Exploration & Prod., Inc. | Breidenbach #1 | 6,500 | 02533396 |
| 617172 | Apr 11, 2006 | Apr 11, 2006 | Enco Exploration Company | Collier #7 | 6,000 | 02533399 |
| 617172Amendment | Apr 11, 2006 | Apr 11, 2006 | Enco Exploration Company | Collier #7 | 6,000 | 02533399 |
| 616222 | Apr 11, 2006 | Apr 11, 2006 | Riddle Engineering Corp. | Blackburn #2 | 2,700 | 02533216 |
| 617070 | Apr 5, 2006 | Apr 5, 2006 | Hughes, Dan A. Company | Keller Unit #2 | 12,500 | 02533395 |
| 615964 | Mar 28, 2006 | Mar 28, 2006 | Pioneer Natural Res. USA, Inc. | Hoyt Gentry Gas Unit #2 | 17,000 | 02533394 |
| 615600 | Mar 15, 2006 | Mar 15, 2006 | Legend Natural Gas II, LP | Npu (Ray 106) #41 C | 11,600 | 02533239 |
| 615438 | Mar 15, 2006 | Mar 15, 2006 | Welder Exploration & Prod., Inc. | Wicker B #7 | 6,500 | 02533393 |
| 615437 | Mar 15, 2006 | Mar 15, 2006 | Welder Exploration & Prod., Inc. | Wicker A #6 | 6,500 | 02533392 |
| 615671 | Mar 14, 2006 | Mar 14, 2006 | Wagner Oil Company | Walton-Ray Wilcox Unit #1 | 8,346 | 02502885 |
| 615590 | Mar 10, 2006 | Mar 10, 2006 | Anderson Oil Ltd | Wolters #1 | 8,600 | 02533391 |
| 615323 | Mar 7, 2006 | Mar 7, 2006 | Modern Exploration, Inc. | Shinn #1 | 4,600 | 02533390 |
| 615012 | Mar 7, 2006 | Mar 7, 2006 | Enco Exploration Company | Bear Creek #1 | 6,000 | 02533389 |
| 614728 | Feb 27, 2006 | Feb 27, 2006 | Welder Exploration & Prod., Inc. | Welder #1F | 7,000 | 02533388 |
| 614103 | Feb 22, 2006 | Feb 22, 2006 | Pioneer Natural Res. USA, Inc. | Schroeder #4 | 13,912 | 02533346 |
| 614026 | Feb 22, 2006 | Feb 22, 2006 | Legend Natural Gas II, LP | Npu (Ray 109) #44 | 10,500 | 02533386 |
| 613870 | Feb 21, 2006 | Feb 21, 2006 | Legend Natural Gas II, LP | Ray, George A. #99 F | 9,000 | 02533032 |
| 613311 | Jan 31, 2006 | Jan 31, 2006 | Hughes, Dan A. Company | Chandler #1 | 12,500 | 02533385 |
| 612497 | Jan 17, 2006 | Jan 17, 2006 | West Tuleta Operating Corp. | Wtu Robinson #6 | 9,000 | 02533384 |
| 611361 | Dec 28, 2005 | Dec 28, 2005 | Pioneer Natural Res. USA, Inc. | Henry Bues Gas Unit #15H | 17,000 | 02533383 |
| 611262 | Dec 27, 2005 | Dec 27, 2005 | Welder Exploration & Prod., Inc. | Heard, C. E. #1A | 9,000 | 02533382 |
| 611126 | Dec 20, 2005 | Dec 20, 2005 | Enco Exploration Company | Collier #6 | 6,000 | 02533381 |
| 611120 | Dec 16, 2005 | Dec 16, 2005 | Tidal Petroleum, Inc. | Dugat #1 | 10,200 | 02533379 |
| 611120Amendment | Dec 16, 2005 | Dec 16, 2005 | Tidal Petroleum, Inc. | Dugat #1 | 5,206 | 02533379 |
| 611120Amendment | Dec 16, 2005 | Dec 16, 2005 | Tidal Petroleum, Inc. | Dugat #1 | 10,200 | 02533379 |
| 611059 | Dec 16, 2005 | Dec 16, 2005 | Welder Exploration & Prod., Inc. | Wicker #5 | 7,000 | 02533380 |
| 610630 | Dec 14, 2005 | Dec 14, 2005 | Inland Ocean, Inc. | Mutchler-Roth Unit #2 | 4,500 | 02533377 |
| 610460 | Dec 14, 2005 | Dec 14, 2005 | Enco Exploration Company | Bowden Unit #1 | 5,000 | 02533378 |
| 610904 | Dec 13, 2005 | Dec 13, 2005 | Kaler Energy Corp | Holzmark #B 1 | 9,500 | 02533376 |
| 610770 | Dec 9, 2005 | Dec 9, 2005 | Hughes, Dan A. Company | Charco Ranch #1 | 4,700 | 02533375 |
| 610679 | Dec 7, 2005 | Dec 7, 2005 | Hughes, Dan A. Company | Helm - Arburn Unit #2 | 12,500 | 02533374 |
| 610452 | Dec 7, 2005 | Dec 7, 2005 | LMP Exploration Operating, LLC | Martin Unit #2 | 10,500 | 02533373 |
| 609594 | Nov 16, 2005 | Nov 16, 2005 | Hughes, Dan A. Company | McKinney-Johnston #1 | 5,000 | 02533372 |
| 608908 | Nov 7, 2005 | Nov 7, 2005 | Pioneer Natural Res. USA, Inc. | O'Neal Gas Unit #12H | 17,000 | 02533371 |
| 608882 | Nov 3, 2005 | Nov 3, 2005 | Kaler Energy Corp | Carpenter #2 | 10,000 | 02533370 |
| 608605 | Nov 1, 2005 | Nov 1, 2005 | Braman, D. H., Jr. | Bowman #1 | 5,000 | 02533369 |
| 608349 | Oct 31, 2005 | Oct 31, 2005 | Reh Energy, Inc. | Bunch, Donald #1 | 2,100 | 02533368 |
| 608466 | Oct 26, 2005 | Oct 26, 2005 | Crawford Energy Operating Co | Carlson-Danforth #1H | 13,700 | 02533367 |
| 608422 | Oct 26, 2005 | Oct 26, 2005 | Anderson Oil Ltd | Eberstadt #6 | 5,900 | 02533366 |
| 605355 | Oct 18, 2005 | Oct 18, 2005 | Pioneer Natural Res. USA, Inc. | Gordon Gas Unit #9H | 17,000 | 02533357 |
| 607906 | Oct 14, 2005 | Oct 14, 2005 | Modern Exploration, Inc. | Staples #1 | 9,350 | 02533365 |
| 607906Amendment | Oct 14, 2005 | Oct 14, 2005 | Modern Exploration, Inc. | Staples #1 | 9,500 | 02533365 |
| 607846 | Oct 13, 2005 | Oct 13, 2005 | Petro-Hunt, L.L.C. | Johnston - Dirks #1 | 16,500 | 02533364 |
| 607846Amendment | Oct 13, 2005 | Oct 13, 2005 | Petro-Hunt, L.L.C. | Johnston - Dirks #1 | 16,500 | 02533364 |
| 607846Amendment | Oct 13, 2005 | Oct 13, 2005 | Petro-Hunt, L.L.C. | Johnston - Dirks Gas Unit #1 #1 | 16,068 | 02533364 |
| 607720 | Oct 12, 2005 | Oct 12, 2005 | Hughes, Dan A. Company | Keller #1 | 12,500 | 02533363 |
| 606776 | Oct 6, 2005 | Oct 6, 2005 | Gulfstar Properties, Inc. | Spindletop #2 | 9,950 | 02533362 |
| 606251 | Sep 14, 2005 | Sep 14, 2005 | Pioneer Natural Res. USA, Inc. | Henry Bues Gas Unit #14H | 17,000 | 02533361 |
| 606240 | Sep 14, 2005 | Sep 14, 2005 | Pioneer Natural Res. USA, Inc. | Henry Bues Gas Unit #13H | 17,000 | 02533360 |
| 606235 | Sep 13, 2005 | Sep 13, 2005 | Pioneer Natural Res. USA, Inc. | Turner GU #12H | 17,000 | 02533359 |
| 604685 | Sep 8, 2005 | Sep 8, 2005 | Dirnett, Inc. | Rapp #4 | 3,496 | 02500937 |
| 605793 | Sep 1, 2005 | Sep 1, 2005 | Enco Exploration Company | Long-Culli-McKay Unit #1 | 6,000 | 02533358 |
| 605325 | Aug 23, 2005 | Aug 23, 2005 | Hughes, Dan A. Company | Grissom #3 | 12,000 | 02533356 |
| 605325Amendment | Aug 23, 2005 | Aug 23, 2005 | Hughes, Dan A. Company | Grissom #3 | 12,000 | 02533356 |
| 605325Amendment | Aug 23, 2005 | Aug 23, 2005 | Hughes, Dan A. Company | Grissom #3 | 11,000 | 02533356 |
| 605219 | Aug 19, 2005 | Aug 19, 2005 | Hughes, Dan A. Company | Hill-Rose Gas Unit #2 | 10,500 | 02533355 |
| 605209 | Aug 19, 2005 | Aug 19, 2005 | Pioneer Natural Res. USA, Inc. | Schroeder Gas Unit #5H | 17,000 | 02533354 |
| 605006 | Aug 16, 2005 | Aug 16, 2005 | Hughes, Dan A. Company | Mansker-Shell Unit #1 | 9,357 | 02533065 |
| 604839 | Aug 11, 2005 | Aug 11, 2005 | Petrohawk Operating Company | Heard, C.E. "B" #22 | 5,500 | 02533353 |
| 604508 | Aug 5, 2005 | Aug 5, 2005 | Morris, W. Dale Inc. | Nichols Gas Unit #1H | 13,500 | 02533352 |
| 604054 | Jul 28, 2005 | Jul 28, 2005 | Enco Exploration Company | Schauer #1 | 4,500 | 02533351 |
| 559327 | Jul 27, 2005 | Jul 27, 2005 | AC Exploration, LLC | McFall Kerby #5 | 8,200 | 02533199 |
| 603575 | Jul 20, 2005 | Jul 20, 2005 | Halex Oil Corporation | McFall-Kerby #1 | 7,120 | 02532096 |
| 602912 | Jul 7, 2005 | Jul 7, 2005 | Salida Exploration, LLC | Thomson-Barrow #4 | 6,000 | 02533350 |