| 621467Amendment | Jun 27, 2006 | Jun 27, 2006 | Transatlantic Petr (USA) Corp. | South Gillock Unit #96 | 10,500 | 16731432 |
| 621467Amendment | Jun 27, 2006 | Jun 27, 2006 | Transatlantic Petr (USA) Corp. | South Gillock Unit #96 | 10,500 | 16731432 |
| 621467Amendment | Jun 27, 2006 | Jun 27, 2006 | Denbury Onshore, LLC | South Gillock Unit #96 | 9,761 | 16731432 |
| 621091 | Jun 16, 2006 | Jun 16, 2006 | Hunt, Hassie Exploration Company | Aronsfeld Gas Unit #3 | 12,134 | 16731384 |
| 621091Amendment | Jun 16, 2006 | Jun 16, 2006 | Hunt, Hassie Exploration Company | Aronsfeld Gas Unit #3 | 12,134 | 16731384 |
| 621091Amendment | Jun 16, 2006 | Jun 16, 2006 | Hunt, Hassie Exploration Company | Aronsfeld Gas Unit #3 | 12,134 | 16731384 |
| 620526 | Jun 8, 2006 | Jun 8, 2006 | Stroud Production LLC | Marrs McLean D #6 | 4,800 | 16731431 |
| 620111 | May 30, 2006 | May 30, 2006 | Tema Oil and Gas Company | Nadkarni & Durant #1 | 9,750 | 16730093 |
| 618839 | May 10, 2006 | May 10, 2006 | Davis Petroleum Corp. | State Tract 116-A #1 | 15,500 | 16731422 |
| 618839Amendment | May 10, 2006 | May 10, 2006 | Davis Petroleum Corp. | State Tract 116-A #1 | 15,500 | 16731422 |
| 618839Amendment | May 10, 2006 | May 10, 2006 | Davis Petroleum Corp. | State Tract 116-A #1 | 15,500 | 16731422 |
| 618419 | Apr 28, 2006 | Apr 28, 2006 | Hunt, Hassie Exploration Company | M. Gilby et al GU #2 | 11,900 | 16731315 |
| 617380 | Apr 17, 2006 | Apr 17, 2006 | El Paso Production Oil & Gas Co. | Halls Bayou Ranch "a" Gas Unit #1 | 20,000 | 16731429 |
| 617380Amendment | Apr 17, 2006 | Apr 17, 2006 | Reef Exploration, L.P. | Halls Bayou Ranch "a" Gas Unit #1 | 14,292 | 16731429 |
| 616379 | Mar 29, 2006 | Mar 29, 2006 | KCS Resources, Inc. | Bayou Development #B 20 | 9,500 | 16731428 |
| 613952 | Mar 22, 2006 | Mar 22, 2006 | KCS Resources, Inc. | Bayou Development #B 21 | 9,500 | 16731427 |
| 615958 | Mar 20, 2006 | Mar 20, 2006 | Hunt, Hassie Exploration Company | Ghinaudo, M., et Al #3 | 11,720 | 16731355 |
| 614390 | Feb 23, 2006 | Feb 23, 2006 | Transatlantic Petr (USA) Corp. | South Gillock #17 | 8,708 | 16701229 |
| 610994 | Feb 6, 2006 | Feb 6, 2006 | Tema Oil and Gas Company | Willaert & Durant #1 | 9,750 | 16730128 |
| 612735 | Feb 1, 2006 | Feb 1, 2006 | St. Mary Land & Exploration Co. | State Tract 130A #1 | 12,500 | 16731423 |
| 613026 | Jan 26, 2006 | Jan 26, 2006 | National Onshore LP | Blow Fish Gas Unit #3292 | 16,700 | 16731426 |
| 613026Amendment | Jan 26, 2006 | Jan 26, 2006 | National Onshore LP | Blow Fish Gas Unit 329 #2 | 16,700 | 16731426 |
| 613025 | Jan 26, 2006 | Jan 26, 2006 | Erskine Energy, LLC | State Tract 343 #1 | 14,000 | 16731425 |
| 611686 | Jan 4, 2006 | Jan 4, 2006 | Transatlantic Petr (USA) Corp. | South Gillock #1 | 8,280 | 16701158 |
| 611686Amendment | Jan 4, 2006 | Jan 4, 2006 | Transatlantic Petr (USA) Corp. | South Gillock #1 | 8,280 | 16701158 |
| 611018 | Dec 14, 2005 | Dec 14, 2005 | Rosetta Resources Operating LP | State Tract 116-A #1 | 15,500 | 16731422 |
| 606875 | Sep 23, 2005 | Sep 23, 2005 | Hunt, Hassie Exploration Company | M. Gilby et al Unit #1 | 10,705 | 16701425 |
| 606393 | Sep 15, 2005 | Sep 15, 2005 | Hunt, Hassie Exploration Company | M. Ghinaudo et al Gas Unit #5 | 12,110 | 16731364 |
| 606057 | Sep 12, 2005 | Sep 12, 2005 | St. Mary Land & Exploration Co. | State Tract 345 #1 | 14,000 | 16731418 |
| 606057Amendment | Sep 12, 2005 | Sep 12, 2005 | St. Mary Land & Exploration Co. | State Tract 345 #1 | 14,000 | 16731418 |
| 604924 | Aug 15, 2005 | Aug 15, 2005 | Reef Exploration, Inc. (A-1) | State of Texas #4 | 13,000 | 16731417 |
| 604924Amendment | Aug 15, 2005 | Aug 15, 2005 | Reef Exploration, Inc. (A-1) | State of Texas #4 | 16,350 | 16731417 |
| 603808 | Jul 22, 2005 | Jul 22, 2005 | Elliott Oil & Gas Operating Co. | Tacquard #1 | 14,515 | 16730988 |
| 603808Amendment | Jul 22, 2005 | Jul 22, 2005 | Elliott Oil & Gas Operating Co. | Tacquard #1 | 9,600 | 16730988 |
| 603757 | Jul 21, 2005 | Jul 21, 2005 | EOG Resources, Inc. | Brittany Lakes #1 | 17,500 | 16731416 |
| 603757Amendment | Jul 21, 2005 | Jul 21, 2005 | EOG Resources, Inc. | Lakes, Brittany #1 | 17,500 | 16731416 |
| 603545 | Jul 18, 2005 | Jul 18, 2005 | Houston Oil Prod Enterprises,inc | Cade, E. K. #68ST | 8,100 | 16700289 |
| 603545Amendment | Jul 18, 2005 | Jul 18, 2005 | Houston Oil Prod Enterprises,inc | Cade, E. K. #68ST | 8,342 | 16700289 |
| 603389 | Jul 15, 2005 | Jul 15, 2005 | Hunt, Hassie Exploration Company | Gordon #3 | 12,038 | 16731374 |
| 603018 | Jul 6, 2005 | Jul 6, 2005 | Azimuth Energy, LLC | State Tract 322 #1 | 10,700 | 16731415 |
| 602854 | Jul 1, 2005 | Jul 1, 2005 | KCS Resources, Inc. | Bayou Development #B 19 | 9,700 | 16731414 |
| 602174 | Jun 17, 2005 | Jun 17, 2005 | Houston Oil Prod Enterprises,inc | Cade, E.K. #75ST | 8,300 | 16700296 |
| 602174Amendment | Jun 17, 2005 | Jun 17, 2005 | Houston Oil Prod Enterprises,inc | Cade, E. K. #75ST | 7,780 | 16700296 |
| 600483 | May 10, 2005 | May 10, 2005 | Transtexas Gas Corporation | State Tract 331 #1 | 17,905 | 16731282 |
| 600366 | May 9, 2005 | May 9, 2005 | Devon Energy Production Co, L.P. | HBR Rubel #1 | 17,000 | 16731413 |
| 560502 | Apr 20, 2005 | Apr 20, 2005 | Stroud Production LLC | League, Nellie B. #15ST | 5,500 | 16730136 |
| 560503 | Apr 18, 2005 | Apr 18, 2005 | Stroud Production LLC | Smith, G. E. "B" R/a "A" #20ST | 5,800 | 16700820 |
| 556907 | Mar 16, 2005 | Mar 16, 2005 | Wagner Oil Company | Galveston Townsite Unit 3 #1 | 9,606 | 16730026 |
| 558566 | Mar 4, 2005 | Mar 4, 2005 | Hunt, Hassie Exploration Co. | M.ghinaudo et al Gas Unit #5 | 12,110 | 16731364 |
| 557532 | Feb 10, 2005 | Feb 10, 2005 | Peoples Energy Prod.-TX, L.P. | Sunny Ernst GU #1 | 14,845 | 16731352 |
| 550446 | Dec 2, 2004 | Dec 2, 2004 | Hilcorp Energy Company | Tacquard #3 | 13,300 | 16731407 |
| 554149 | Dec 1, 2004 | Dec 1, 2004 | New Century Exploration, Inc. | Taub, Ben #1 | 9,600 | 16731412 |
| 553546 | Nov 12, 2004 | Nov 12, 2004 | Hunt, Hassie Exploration Co. | Gordon #5 | 12,500 | 16731411 |
| 553546Amendment | Nov 12, 2004 | Nov 12, 2004 | Hunt, Hassie Exploration Company | Gordon #5 | 12,500 | 16731411 |
| 553220 | Nov 4, 2004 | Nov 4, 2004 | Stroud Production LLC | McNeill "A" #3ST | 5,500 | 16730690 |
| 552387 | Oct 28, 2004 | Oct 28, 2004 | KCS Resources, Inc. | Maco Stewart A #32S | 11,905 | 16701564 |
| 552914 | Oct 27, 2004 | Oct 27, 2004 | Stroud Production LLC | Smith, George E. -B- R/a -A- #56 | 5,900 | 16731410 |
| 552383 | Oct 26, 2004 | Oct 26, 2004 | KCS Resources, Inc. | Dickinson Gas Unit #12 | 9,230 | 16730837 |
| 552557 | Oct 20, 2004 | Oct 20, 2004 | Reef Exploration, Inc. (A-1) | Halls Bayou Ranch Tr. 4 Unit #2 | 15,355 | 16731409 |
| 551361 | Sep 22, 2004 | Sep 22, 2004 | KCS Resources, Inc. | Maco-Stewart #A 37 S | 9,650 | 16701569 |
| 551361Amendment | Sep 22, 2004 | Sep 22, 2004 | KCS Resources, Inc. | Maco-Stewart #A 37 S | 9,650 | 16701569 |
| 549317 | Sep 8, 2004 | Sep 8, 2004 | Capco Offshore, Inc. | Zinn & Forman #11 | 7,780 | 16700922 |
| 549317Amendment | Sep 8, 2004 | Sep 8, 2004 | Packard Gas Company | Zinn & Forman #11 | 7,780 | 16700922 |
| 550163 | Aug 26, 2004 | Aug 26, 2004 | A.O.E. Operators, Inc. | Vee, Arlene #1 | 6,000 | 16731406 |
| 549528 | Aug 12, 2004 | Aug 12, 2004 | Hunt, Hassie Exploration Co. | Aronsfeld Gas Unit #1 | 11,700 | 16731212 |
| 547744 | Jul 6, 2004 | Jul 6, 2004 | Northstar Gulfsands, LLC | Galveston 215 #1 | 5,975 | 70630236 |
| 547281 | Jun 24, 2004 | Jun 24, 2004 | Masters Resources, L.L.C. | State Tract 343 #14 | 9,000 | 16730855 |
| 546067 | Jun 24, 2004 | Jun 24, 2004 | KCS Resources, Inc. | Stewart, Maco "A" #45 | 9,400 | 16731057 |
| 547221 | Jun 21, 2004 | Jun 21, 2004 | Transtexas Gas Corporation | State Tract 331 #8 | 17,750 | 16731405 |
| 546960 | Jun 15, 2004 | Jun 15, 2004 | Stroud Production LLC | McNeill "B" #8 | 5,800 | 16730905 |
| 546842 | Jun 14, 2004 | Jun 14, 2004 | Rutherford Oil Corporation | State Tract 179 #1 | 9,000 | 16731404 |
| 544568 | Apr 16, 2004 | Apr 16, 2004 | Hilcorp Energy Company | Tacquard #1 | 12,850 | 16731358 |
| 544450 | Apr 14, 2004 | Apr 14, 2004 | Hunt, Hassie Exploration Co. | Federal Delange Gas Unit #3 | 12,200 | 16731403 |
| 544450Amendment | Apr 14, 2004 | Apr 14, 2004 | Hunt, Hassie Exploration Company | Federal Delange Gas Unit #3ST | 12,200 | 16731403 |
| 544449 | Apr 14, 2004 | Apr 14, 2004 | Hunt, Hassie Exploration Company | Federal Brooks Gas Unit #2 | 12,200 | 16731401 |
| 544448 | Apr 14, 2004 | Apr 14, 2004 | Hunt, Hassie Exploration Co. | Federal Brooks Gas Unit #3 | 12,000 | 16731402 |
| 544447 | Apr 14, 2004 | Apr 14, 2004 | Hunt, Hassie Exploration Company | Federal Brooks Gas Unit #1 | 12,000 | 16731400 |
| 544249 | Apr 8, 2004 | Apr 8, 2004 | New Century Exploration, Inc. | Bofysil #2 | 9,950 | 16731399 |
| 544249Amendment | Apr 8, 2004 | Apr 8, 2004 | New Century Exploration, Inc. | Greyhound #1 | 9,950 | 16731399 |
| 543285 | Mar 17, 2004 | Mar 17, 2004 | Stroud Production LLC | Barker #1 | 5,500 | 16731398 |
| 542634 | Mar 1, 2004 | Mar 1, 2004 | Hunt, Hassie Exploration Co. | C. E. Franks Gas Unit #5 | 11,850 | 16731347 |
| 542634Amendment | Mar 1, 2004 | Mar 1, 2004 | Hunt, Hassie Exploration Co. | C. E. Franks Gas Unit #5 | 11,850 | 16731347 |
| 542507 | Feb 25, 2004 | Feb 25, 2004 | Kiawah Resources, LLC | State of Texas #3 | 12,608 | 16731397 |
| 542237 | Feb 19, 2004 | Feb 19, 2004 | KCS Resources, Inc. | Stewart, Maco #A 32S | 10,400 | 16701564 |
| 542237Amendment | Feb 19, 2004 | Feb 19, 2004 | KCS Resources, Inc. | Stewart, Maco #A 32S | 11,515 | 16701564 |
| 542124 | Feb 17, 2004 | Feb 17, 2004 | Reef Exploration, Inc. (A-1) | State of Texas #3 | 14,400 | 16731396 |
| 542124Amendment | Feb 17, 2004 | Feb 17, 2004 | Reef Exploration, Inc. (A-1) | State of Texas #3 | 14,400 | 16731396 |
| 542124Amendment | Feb 17, 2004 | Feb 17, 2004 | Reef Exploration, Inc. (A-1) | State of Texas #3 | 14,400 | 16731396 |
| 541811 | Feb 6, 2004 | Feb 6, 2004 | Tristar Exploration, Inc | Henck "A" #1 | 10,976 | 16701376 |
| 540407 | Jan 6, 2004 | Jan 6, 2004 | Hunt, Hassie Exploration Co. | Cortese Unit #1 | 10,918 | 16731219 |
| 540407Amendment | Jan 6, 2004 | Jan 6, 2004 | Hunt, Hassie Exploration Co. | Cortese Unit #1 | 10,918 | 16731219 |
| 540407Amendment | Jan 6, 2004 | Jan 6, 2004 | Hunt, Hassie Exploration Co. | Cortese Unit #1 | 10,918 | 16731219 |
| 539471 | Dec 17, 2003 | Dec 17, 2003 | Palace Operating Company | State Tract 312 #1 | 17,500 | 16731395 |
| 538079 | Dec 1, 2003 | Dec 1, 2003 | Tepco Resources, Inc. | State of Texas #3 | 15,000 | 16731394 |
| 538229 | Nov 4, 2003 | Nov 4, 2003 | Hunt, Hassie Exploration Co. | Green, S. H. #2 | 10,800 | 16701902 |
| 537793 | Oct 22, 2003 | Oct 22, 2003 | Newfield Exploration Company | State Tract #332 #1 | 17,000 | 16731393 |
| 537793Amendment | Oct 22, 2003 | Oct 22, 2003 | Transtexas Gas Corporation | State Tract #332 #1 | 16,000 | 16731393 |
| 537551 | Oct 15, 2003 | Oct 15, 2003 | Hunt, Hassie Exploration Co. | Federal Delange Gas Unit #1 | 13,000 | 16731392 |
| 537549 | Oct 15, 2003 | Oct 15, 2003 | Hunt, Hassie Exploration Co. | Federal Delange Gas Unit #2 | 13,000 | 16731391 |
| 537032 | Oct 3, 2003 | Oct 3, 2003 | Stroud Production LLC | Cade, Henshaw #1 | 5,500 | 16731390 |