| 488411 | Oct 11, 1999 | Oct 11, 1999 | Corenergy Operating Group, LLC | Lewis Ranch #2 | 5,140 | 02532976 |
| 488180 | Oct 4, 1999 | Oct 4, 1999 | Corenergy Operating Group, LLC | Blackburn, L. K. #2 | 3,100 | 02532974 |
| 488079 | Sep 30, 1999 | Sep 30, 1999 | Pennzenergy Exp. & Prod., L.L.C. | Npu (Ray -6) #31 | 9,500 | 02500103 |
| 487712 | Sep 17, 1999 | Sep 17, 1999 | Corenergy Operating Group, LLC | Pagel, C. C. #1 | 4,800 | 02532973 |
| 486980 | Sep 17, 1999 | Sep 17, 1999 | Pioneer Natural Res. USA, Inc. | Henry Bues Gas Unit #2H | 13,975 | 02532501 |
| 487587 | Sep 15, 1999 | Sep 15, 1999 | Aurora Resources Corporation | McMillan, Martha Welder #3 | 2,718 | 02501295 |
| 487586 | Sep 15, 1999 | Sep 15, 1999 | Aurora Resources Corporation | McMillan, Martha Welder #2 | 2,700 | 02501333 |
| 487558 | Sep 14, 1999 | Sep 14, 1999 | Columbus Energy Corp. | Long #4 | 13,600 | 02532972 |
| 487558Amendment | Sep 14, 1999 | Sep 14, 1999 | Columbus Energy Corp. | Long #4 | 13,600 | 02532972 |
| 487529 | Sep 13, 1999 | Sep 13, 1999 | Republic Resources, LLC, | Hoyer #1 | 4,500 | 02532971 |
| 487101 | Sep 13, 1999 | Sep 13, 1999 | Prime Operating Company | Shinn Gas Unit SWD #1 | 10,750 | 02532676 |
| 487237 | Sep 2, 1999 | Sep 2, 1999 | Corenergy Operating Group, LLC | Blackburn, L. K. #1 | 2,700 | 02532970 |
| 486954 | Aug 27, 1999 | Aug 27, 1999 | Welder-Heyer Energy, Inc. | Wicker, E. H. #B 1 | 5,000 | 02532969 |
| 486979 | Aug 25, 1999 | Aug 25, 1999 | Pioneer Natural Res. USA, Inc. | Tomasek Gas Unit #3H | 14,000 | 02530538 |
| 486979Amendment | Aug 25, 1999 | Aug 25, 1999 | Pioneer Natural Res. USA, Inc. | Tomasek Gas Unit #3H | 15,592 | 02530538 |
| 486941 | Aug 25, 1999 | Aug 25, 1999 | Tidal Petroleum, Inc. | Federer #1 | 4,500 | 02532968 |
| 486941Amendment | Aug 25, 1999 | Aug 25, 1999 | Tidal Petroleum, Inc. | Federer #1 | 4,500 | 02532968 |
| 486728 | Aug 17, 1999 | Aug 17, 1999 | Famcor Oil, Inc | Griffith #1 | 5,600 | 02532474 |
| 486654 | Aug 13, 1999 | Aug 13, 1999 | Pioneer Natural Res. USA, Inc. | Tomasek Gas Unit #5H | 13,950 | 02532967 |
| 486490 | Aug 6, 1999 | Aug 6, 1999 | Corenergy Operating Group, LLC | Roark, A. W. #1 | 6,000 | 02532966 |
| 486387 | Aug 6, 1999 | Aug 6, 1999 | Welder-Heyer Energy, Inc. | Breidenbach #1 | 5,000 | 02532965 |
| 486387Amendment | Aug 6, 1999 | Aug 6, 1999 | Welder-Heyer Energy, Inc. | Breidenbach #1 | 5,000 | 02532965 |
| 486368 | Aug 3, 1999 | Aug 3, 1999 | Sonat Exploration Co. - Houston | Dunn #1 | 13,500 | 02532964 |
| 485586 | Jul 19, 1999 | Jul 19, 1999 | Welder-Heyer Energy, Inc. | Traylor, C. T. III #1 | 5,000 | 02532960 |
| 485586Amendment | Jul 19, 1999 | Jul 19, 1999 | Welder-Heyer Energy, Inc. | Traylor, C. T. III #1 | 5,000 | 02532960 |
| 485894 | Jul 16, 1999 | Jul 16, 1999 | Welder-Heyer Energy, Inc. | O'Brien, J. M. III #05 | 5,000 | 02532962 |
| 485832 | Jul 13, 1999 | Jul 13, 1999 | Legacy Oil & Gas, Inc. | La Rose #1 | 5,400 | 02532961 |
| 485583 | Jul 1, 1999 | Jul 1, 1999 | Tidal Petroleum, Inc. | Norwell #5 | 4,500 | 02532959 |
| 485362 | Jun 23, 1999 | Jun 23, 1999 | Staples, James W. Prod. Co. | Moore, Lon S. #2 | 3,700 | 02531828 |
| 485245 | Jun 16, 1999 | Jun 16, 1999 | Bandera Exploration Company | Schoolfield #1A | 8,864 | 02501742 |
| 485008 | Jun 14, 1999 | Jun 14, 1999 | Felderhoff Production Co. | Duty East #3 | 5,500 | 02532957 |
| 485008Amendment | Jun 14, 1999 | Jun 14, 1999 | Felderhoff Production Co. | Duty East #3 | 5,310 | 02532957 |
| 485141 | Jun 11, 1999 | Jun 11, 1999 | Pearl, Bill H. Productions, Inc. | Staples, James W. Sr. #1 | 4,500 | 02532958 |
| 484999 | Jun 7, 1999 | Jun 7, 1999 | Corenergy Operating Group, LLC | McKinney, F. G. Estate #1 | 4,600 | 02532956 |
| 484999Amendment | Jun 7, 1999 | Jun 7, 1999 | Corenergy Operating Group, LLC | McKinney, F. G. Estate #1 | 4,900 | 02532956 |
| 484810 | May 27, 1999 | May 27, 1999 | Corenergy Operating Group, LLC | Wilhite, M. E. #1 | 5,600 | 02532954 |
| 484809 | May 27, 1999 | May 27, 1999 | Corenergy Operating Group, LLC | Handy, R. E. #1 | 2,400 | 02532955 |
| 484809Amendment | May 27, 1999 | May 27, 1999 | Corenergy Operating Group, LLC | Handy, R. E. #1 | 2,900 | 02532955 |
| 484809Amendment | May 27, 1999 | May 27, 1999 | Corenergy Operating Group, LLC | Handy, R. E. #1 | 2,900 | 02532955 |
| 484560 | May 17, 1999 | May 17, 1999 | Corenergy Operating Group, LLC | Ferrell, D. L. #1 | 2,700 | 02532953 |
| 484475 | May 13, 1999 | May 13, 1999 | C & E Operating, Inc. | Hughes, J. W. F. L. P. #2 | 5,600 | 02532952 |
| 484414 | May 11, 1999 | May 11, 1999 | C & E Operating, Inc. | O'Brien-Harkins #4 | 4,800 | 02532951 |
| 484316 | May 7, 1999 | May 7, 1999 | Welder-Heyer Energy, Inc. | Wicker, E. H. #2 | 5,000 | 02532950 |
| 484126 | Apr 26, 1999 | Apr 26, 1999 | Legacy Oil & Gas, Inc. | May #5 | 4,150 | 02532949 |
| 484126Amendment | Apr 26, 1999 | Apr 26, 1999 | Apex Energy, Inc. | May #5 | 4,150 | 02532949 |
| 483825 | Apr 20, 1999 | Apr 20, 1999 | Enco Exploration Company | Long #1 | 4,300 | 02532947 |
| 483794 | Apr 16, 1999 | Apr 16, 1999 | C & E Operating, Inc. | Thomson-Barrow Corp. C #14 | 3,200 | 02532945 |
| 483895 | Apr 15, 1999 | Apr 15, 1999 | Tidal Petroleum, Inc. | Norwell #4 | 4,500 | 02532948 |
| 483796 | Apr 14, 1999 | Apr 14, 1999 | CNG Producing Company | Heard, C. E. #1 | 9,200 | 02532946 |
| 483755 | Apr 9, 1999 | Apr 9, 1999 | Pennzenergy Exp. & Prod., L.L.C. | Npu (Ray-8) #29 | 7,700 | 02530234 |
| 483683 | Apr 8, 1999 | Apr 8, 1999 | Great Texas Crude Inc. | Thyssen #2 | 3,600 | 02532944 |
| 483682 | Apr 8, 1999 | Apr 8, 1999 | Great Texas Crude Inc. | Double Sevens #1 | 4,900 | 02532943 |
| 483118 | Apr 6, 1999 | Apr 6, 1999 | Goldston Oil Corp. | Wolters #2 | 9,947 | 02532815 |
| 483468 | Mar 24, 1999 | Mar 24, 1999 | Columbus Energy Corp. | Long #3 | 10,900 | 02532942 |
| 483468Amendment | Mar 24, 1999 | Mar 24, 1999 | Columbus Energy Corp. | Long #3 | 12,700 | 02532942 |
| 483468Amendment | Mar 24, 1999 | Mar 24, 1999 | Columbus Energy Corp. | Long #3 | 12,500 | 02532942 |
| 483468Amendment | Mar 24, 1999 | Mar 24, 1999 | Columbus Energy Corp. | Long #3ST | 12,500 | 02532942 |
| 482878 | Mar 2, 1999 | Mar 2, 1999 | Fredonia Resources Inc. | Heldenfels, F. W. #1 | 2,334 | 02532802 |
| 482950 | Mar 1, 1999 | Mar 1, 1999 | C & E Operating, Inc. | O'Brien, J. M. #8 | 5,000 | 02532941 |
| 482926 | Feb 25, 1999 | Feb 25, 1999 | C & E Operating, Inc. | O'Brien, J. M. #4 | 4,870 | 02532795 |
| 482496 | Feb 9, 1999 | Feb 9, 1999 | Welder-Heyer Energy, Inc. | Obrien, J. M. III #4 | 5,000 | 02532940 |
| 482495 | Feb 9, 1999 | Feb 9, 1999 | Welder-Heyer Energy, Inc. | Obrien, Mick & Dick #1 | 5,000 | 02532939 |
| 482492 | Feb 9, 1999 | Feb 9, 1999 | Inland Ocean, Inc. | Roberts, Geo. T. Jr. #1 | 4,600 | 02532938 |
| 482375 | Feb 1, 1999 | Feb 1, 1999 | Legacy Oil & Gas, Inc. | May #4R | 5,600 | 02532937 |
| 482358 | Jan 29, 1999 | Jan 29, 1999 | Pennzoil Exploration & Prod. Co. | N.P.U. (Ray 98) #39 | 10,500 | 02532936 |
| 482322 | Jan 29, 1999 | Jan 29, 1999 | C & E Operating, Inc. | Thomson-Barrow Corp. "C" #13 | 6,000 | 02532935 |
| 482322Amendment | Jan 29, 1999 | Jan 29, 1999 | C & E Operating, Inc. | Thomson-Barrow Corp. "C" #13 | 6,010 | 02532935 |
| 482229 | Jan 25, 1999 | Jan 25, 1999 | Discovery Energy Corp. CC | May #4 | 5,600 | 02532934 |
| 482167 | Jan 22, 1999 | Jan 22, 1999 | Tidal Petroleum, Inc. | Norwell #3 | 4,500 | 02532933 |
| 482167Amendment | Jan 22, 1999 | Jan 22, 1999 | Tidal Petroleum, Inc. | Norwell #3 | 4,500 | 02532933 |
| 481992 | Jan 14, 1999 | Jan 14, 1999 | Great Texas Crude Inc. | Midway #3 | 5,000 | 02532932 |
| 481991 | Jan 14, 1999 | Jan 14, 1999 | Great Texas Crude Inc. | Royal #2 | 4,000 | 02532931 |
| 481577 | Dec 16, 1998 | Dec 16, 1998 | York & Price Petroleum Corp. | Gingerich, George C. #1D | 2,720 | 02531990 |
| 481577Amendment | Dec 16, 1998 | Dec 16, 1998 | Republic Resources, LLC, | Gingerich, George C. #1D | 2,720 | 02531990 |
| 481573 | Dec 16, 1998 | Dec 16, 1998 | York & Price Petroleum Corp. | Robinson #2B | 2,720 | 02531981 |
| 480942 | Nov 17, 1998 | Nov 17, 1998 | Tidal Petroleum, Inc. | Dirks #2 | 4,500 | 02532930 |
| 480884 | Nov 16, 1998 | Nov 16, 1998 | Republic Resources, LLC, | Staples, Jr. J. #1 | 4,500 | 02532929 |
| 480778 | Nov 12, 1998 | Nov 12, 1998 | Welder-Heyer Energy, Inc. | Welder, R. J. #1 #1 | 5,000 | 02532928 |
| 480569 | Nov 12, 1998 | Nov 12, 1998 | C & E Operating, Inc. | Thomson-Barrow Corp. #8 | 5,259 | 02532789 |
| 480698 | Nov 10, 1998 | Nov 10, 1998 | Great Texas Crude Inc. | Independence #1 | 8,500 | 02532927 |
| 480656 | Nov 4, 1998 | Nov 4, 1998 | Pennzoil Exploration & Prod. Co. | Npu (Ray -9L) #11L | 7,000 | 02530303 |
| 480592 | Nov 2, 1998 | Nov 2, 1998 | Welder-Heyer Energy, Inc. | Obrien, J. M. III #3 | 5,000 | 02532926 |
| 480584 | Oct 30, 1998 | Oct 30, 1998 | Columbus Energy Corp. | Long #2 | 11,200 | 02532925 |
| 480377 | Oct 29, 1998 | Oct 29, 1998 | Mesa Chica Corp. | Foster #1S | 5,000 | 02532921 |
| 480400 | Oct 28, 1998 | Oct 28, 1998 | Prime Operating Company | Chandler #1 | 9,300 | 02532922 |
| 480400Amendment | Oct 28, 1998 | Oct 28, 1998 | Prime Operating Company | Chandler Gas Unit #1 | 9,100 | 02532922 |
| 480492 | Oct 27, 1998 | Oct 27, 1998 | Carrizo Oil & Gas, Inc. | Ray #1 | 4,400 | 02532924 |
| 480491 | Oct 27, 1998 | Oct 27, 1998 | Carrizo Oil & Gas, Inc. | Welder #1 | 4,400 | 02532923 |
| 480491Amendment | Oct 27, 1998 | Oct 27, 1998 | Carrizo Oil & Gas, Inc. | Welder #1 | 4,400 | 02532923 |
| 480223 | Oct 20, 1998 | Oct 20, 1998 | C & E Operating, Inc. | O'Brien, J. M. #3 | 4,630 | 02532791 |
| 480012 | Oct 9, 1998 | Oct 9, 1998 | C & E Operating, Inc. | O'Brien, J. M. #9 | 5,000 | 02532920 |
| 479712 | Sep 25, 1998 | Sep 25, 1998 | Strand Energy, L.C. | Sugarek #2 | 3,750 | 02532841 |
| 479562 | Sep 18, 1998 | Sep 18, 1998 | Ultra Oil & Gas, Inc. | Simons #1 | 14,000 | 02532480 |
| 479270 | Sep 4, 1998 | Sep 4, 1998 | Corenergy Operating Group, LLC | Barnhart #2 | 4,800 | 02532919 |
| 479270Amendment | Sep 4, 1998 | Sep 4, 1998 | Corenergy Operating Group, LLC | Barnhart #2 | 4,800 | 02532919 |
| 479229 | Sep 3, 1998 | Sep 3, 1998 | Tidal Petroleum, Inc. | Norwell #2 | 4,500 | 02532918 |
| 479206 | Sep 3, 1998 | Sep 3, 1998 | C & E Operating, Inc. | Thomson-Barrow Corp. "C" #12 | 6,000 | 02532917 |
| 479205 | Sep 3, 1998 | Sep 3, 1998 | C & E Operating, Inc. | Thomson-Barrow Corp. #20 | 6,000 | 02532916 |
| 479088 | Aug 28, 1998 | Aug 28, 1998 | Sanchez Oil & Gas Corporation | Dirks Unit #1 | 15,500 | 02532915 |
| 478971 | Aug 25, 1998 | Aug 25, 1998 | Welder-Heyer Energy, Inc. | Wicker, E. H. #1 | 5,100 | 02532914 |