| 511501Amendment | Jul 17, 2001 | Jul 17, 2001 | Conoco Inc. | Benavides, Rosa V. B #84 | 9,925 | 47937882 |
| 511487 | Jul 17, 2001 | Jul 17, 2001 | Conoco Inc. | Frost Trust 9 #2 | 11,350 | 47937881 |
| 511456 | Jul 17, 2001 | Jul 17, 2001 | Kerns O & G, Inc. | Gates Ranch "Y" #1012A | 5,900 | 47937883 |
| 511430 | Jul 17, 2001 | Jul 17, 2001 | Crimson Energy Company, LC | Briscoe "A" #630 | 5,468 | 47932048 |
| 511430Amendment | Jul 17, 2001 | Jul 17, 2001 | Crimson Energy Company, LC | Briscoe "A" #630 | 5,468 | 47932048 |
| 511429 | Jul 17, 2001 | Jul 17, 2001 | Crimson Energy Company, LC | Briscoe "E" #95 | 6,100 | 47937880 |
| 511429Amendment | Jul 17, 2001 | Jul 17, 2001 | Crimson Energy Company, LC | Briscoe "E" #95 | 6,100 | 47937880 |
| 511422 | Jul 17, 2001 | Jul 17, 2001 | Crimson Energy Company, LC | Briscoe "E" #113 | 6,100 | 47937879 |
| 511421 | Jul 17, 2001 | Jul 17, 2001 | Crimson Energy Company, LC | Briscoe "B" #1 | 6,200 | 47935094 |
| 511415 | Jul 13, 2001 | Jul 13, 2001 | Conoco Inc. | Frost National Bank #79 | 11,400 | 47937877 |
| 511415Amendment | Jul 13, 2001 | Jul 13, 2001 | Conoco Inc. | Frost National Bank #79 | 11,400 | 47937877 |
| 511334 | Jul 11, 2001 | Jul 11, 2001 | Michael Petroleum Corporation | Martin, J. C. #18 | 10,000 | 47937876 |
| 511333 | Jul 11, 2001 | Jul 11, 2001 | Conoco Inc. | Dix Ranch C 899 #1 | 7,850 | 47937875 |
| 511270 | Jul 10, 2001 | Jul 10, 2001 | Eex Operating, L.P. | Alley #13 | 12,000 | 47937874 |
| 511269 | Jul 10, 2001 | Jul 10, 2001 | Eex Operating, L.P. | Alley #12 | 12,000 | 47937873 |
| 511043 | Jul 10, 2001 | Jul 10, 2001 | Columbus Energy Corp. | Clark #18 | 6,100 | 47937871 |
| 511043Amendment | Jul 10, 2001 | Jul 10, 2001 | Columbus Energy Corp. | Clark #18 | 9,000 | 47937871 |
| 511172 | Jul 9, 2001 | Jul 9, 2001 | Conoco Inc. | Hein Trust B #11 | 11,200 | 47937872 |
| 511034 | Jul 6, 2001 | Jul 6, 2001 | Kerns O & G, Inc. | Petty Ranch #1227 | 5,600 | 47937788 |
| 511030 | Jul 5, 2001 | Jul 5, 2001 | Conoco Inc. | Benavides, Rosa V. B #83 | 9,750 | 47937870 |
| 511008 | Jul 3, 2001 | Jul 3, 2001 | EOG Resources, Inc. | Villarreal #8 | 9,800 | 47937869 |
| 510949 | Jul 3, 2001 | Jul 3, 2001 | Kerns O & G, Inc. | Petty Ranch #1206 | 5,800 | 47937226 |
| 510986 | Jul 2, 2001 | Jul 2, 2001 | Key Energy of Colorado, Inc. | Hooks #1 | 8,000 | 47937868 |
| 510762 | Jun 29, 2001 | Jun 29, 2001 | EOG Resources, Inc. | Despain 8 #2 | 11,000 | 47937867 |
| 510794 | Jun 27, 2001 | Jun 27, 2001 | Lewis Petro Properties, Inc. | Rachal, Ed Foundation #1 | 8,590 | 47936599 |
| 510782 | Jun 27, 2001 | Jun 27, 2001 | Conoco Inc. | Frost Trust 7 #1 | 11,700 | 47937866 |
| 510777 | Jun 26, 2001 | Jun 26, 2001 | Michael Petroleum Corporation | Bruni-Summers #21 | 11,000 | 47937865 |
| 510634 | Jun 26, 2001 | Jun 26, 2001 | Crimson Energy Company, LC | Briscoe "E" #100 | 5,700 | 47937864 |
| 510659 | Jun 22, 2001 | Jun 22, 2001 | Lewis Petro Properties, Inc. | Booth, W. V. et al 2292 #4 | 9,000 | 47937863 |
| 510658 | Jun 22, 2001 | Jun 22, 2001 | Lewis Petro Properties, Inc. | Booth, W. V. et al 2292 #5 | 9,000 | 47937862 |
| 510650 | Jun 22, 2001 | Jun 22, 2001 | Michael Petroleum Corporation | Volz-Martin #2 | 11,000 | 47937861 |
| 510647 | Jun 22, 2001 | Jun 22, 2001 | EOG Resources, Inc. | Billings B #1 | 13,200 | 47937860 |
| 510418 | Jun 22, 2001 | Jun 22, 2001 | Crimson Energy Company, LC | Briscoe "E" #83 | 4,885 | 47934417 |
| 510419 | Jun 21, 2001 | Jun 21, 2001 | Crimson Energy Company, LC | Briscoe "E" #107 | 5,900 | 47937857 |
| 510511 | Jun 20, 2001 | Jun 20, 2001 | Kerns O & G, Inc. | Petty Ranch #404 | 5,900 | 47937859 |
| 510473 | Jun 19, 2001 | Jun 19, 2001 | EOG Resources, Inc. | BMT/K&H "H" #1 | 11,750 | 47937858 |
| 510371 | Jun 18, 2001 | Jun 18, 2001 | Kerns O & G, Inc. | Petty Ranch #8025 | 5,700 | 47937856 |
| 510327 | Jun 14, 2001 | Jun 14, 2001 | Michael Petroleum Corporation | Luz A. Hein Estate #18 | 11,500 | 47937854 |
| 510316 | Jun 14, 2001 | Jun 14, 2001 | Lewis Petro Properties, Inc. | Saunders-Eisenhauer #1 | 10,000 | 47935278 |
| 510314 | Jun 14, 2001 | Jun 14, 2001 | Lewis Petro Properties, Inc. | Gates "N" 2182 13-A #18 | 6,000 | 47937855 |
| 510224 | Jun 14, 2001 | Jun 14, 2001 | Awp Operating Company | Moglia #1 | 6,500 | 47937853 |
| 510195 | Jun 12, 2001 | Jun 12, 2001 | Lewis Petro Properties, Inc. | Booth, W. V. et Al #3AH | 11,000 | 47937852 |
| 510195Amendment | Jun 12, 2001 | Jun 12, 2001 | Lewis Petro Properties, Inc. | Booth, W. V. et Al #3AH | 12,000 | 47937852 |
| 510151 | Jun 11, 2001 | Jun 11, 2001 | Lewis Petro Properties, Inc. | Gonzalez, David et al 100 "B" #5 | 8,000 | 47937850 |
| 510150 | Jun 11, 2001 | Jun 11, 2001 | Lewis Petro Properties, Inc. | Gonzalez, David et al 100 "B" #4 | 8,000 | 47937851 |
| 510146 | Jun 11, 2001 | Jun 11, 2001 | Michael Petroleum Corporation | Volz-Martin #1 | 11,000 | 47937849 |
| 510065 | Jun 11, 2001 | Jun 11, 2001 | Conoco Inc. | Bruni Ranch #79 | 10,600 | 47937848 |
| 510050 | Jun 8, 2001 | Jun 8, 2001 | Vastar Resources, Inc. | Stroman-Armstrong #1 | 10,407 | 47904001 |
| 510048 | Jun 8, 2001 | Jun 8, 2001 | Conoco Inc. | Schwarz, N. C. #1 | 8,000 | 47937847 |
| 510009 | Jun 8, 2001 | Jun 8, 2001 | EOG Resources, Inc. | BMT/K&H "A" #6 | 12,000 | 47937846 |
| 509997 | Jun 7, 2001 | Jun 7, 2001 | Calpine Natural Gas Company | Lundell Ranch #9 | 12,000 | 47937845 |
| 509939 | Jun 7, 2001 | Jun 7, 2001 | Lewis Petro Properties, Inc. | Gonzalez, David et al 1047 "A" #3 | 8,000 | 47937844 |
| 509709 | Jun 7, 2001 | Jun 7, 2001 | Killam Oil Co., Ltd. | Bruni, A. M. (Texaco) "295" #1 | 10,500 | 47937837 |
| 509868 | Jun 5, 2001 | Jun 5, 2001 | EOG Resources, Inc. | BMT/K&H "V" #2 | 11,900 | 47937843 |
| 509859 | Jun 5, 2001 | Jun 5, 2001 | Michael Petroleum Corporation | Martin, Sophie J. "B" #6 | 10,000 | 47936012 |
| 509809 | Jun 5, 2001 | Jun 5, 2001 | Conoco Inc. | Bruni Ranch #43 | 12,900 | 47937842 |
| 509806 | Jun 4, 2001 | Jun 4, 2001 | Columbus Energy Corp. | Martinez, D. S. #7 | 9,000 | 47937839 |
| 509802 | Jun 4, 2001 | Jun 4, 2001 | Conoco Inc. | Huisache Cattle Co. #2 | 11,450 | 47937841 |
| 509777 | Jun 4, 2001 | Jun 4, 2001 | Conoco Inc. | Benavides Family Mineral Trust B #82 | 14,400 | 47937840 |
| 509777Amendment | Jun 4, 2001 | Jun 4, 2001 | Conoco Inc. | Benavides, Rosa V. B4 #82 | 14,400 | 47937840 |
| 509754 | Jun 4, 2001 | Jun 4, 2001 | Conoco Inc. | Frost Trust 13 #2 | 11,600 | 47937838 |
| 509689 | May 31, 2001 | May 31, 2001 | Michael Petroleum Corporation | Villarreal #2 | 9,500 | 47937835 |
| 509689Amendment | May 31, 2001 | May 31, 2001 | Michael Petroleum Corporation | Villarreal #2 | 10,500 | 47937835 |
| 509685 | May 31, 2001 | May 31, 2001 | Columbus Energy Corp. | McKendrick #4 | 7,500 | 47937836 |
| 509675 | May 31, 2001 | May 31, 2001 | Eex Operating, L.P. | Vergara 1679 #9 | 12,000 | 47937834 |
| 509674 | May 31, 2001 | May 31, 2001 | Eex Operating, L.P. | Vergara 1679 #8 | 12,000 | 47937833 |
| 509228 | May 31, 2001 | May 31, 2001 | Southern Royalty Inc. | Adami A #2 | 500 | 47937825 |
| 509608 | May 30, 2001 | May 30, 2001 | Conoco Inc. | Bruni Ranch #40 | 10,900 | 47937829 |
| 509589 | May 30, 2001 | May 30, 2001 | Conoco Inc. | Hein Trust #12 | 11,800 | 47937832 |
| 509571 | May 30, 2001 | May 30, 2001 | Conoco Inc. | Marrs McLean C #10 | 12,700 | 47937831 |
| 509418 | May 25, 2001 | May 25, 2001 | Calpine Natural Gas Company | Lundell Ranch #8R | 11,200 | 47937830 |
| 509234 | May 25, 2001 | May 25, 2001 | Crimson Energy Company, LC | Briscoe "E" #111 | 6,200 | 47937826 |
| 509313 | May 23, 2001 | May 23, 2001 | Lewis Petro Properties, Inc. | Gonzalez, M. A. #8 | 8,000 | 47937828 |
| 509219 | May 23, 2001 | May 23, 2001 | Crimson Energy Company, LC | Briscoe "E" #103 | 6,200 | 47937823 |
| 509256 | May 22, 2001 | May 22, 2001 | Conoco Inc. | Bruni Ranch #63 | 12,500 | 47937824 |
| 509145 | May 18, 2001 | May 18, 2001 | Conoco Inc. | B.M.T. #151 | 10,800 | 47937822 |
| 509137 | May 18, 2001 | May 18, 2001 | Conoco Inc. | Culpepper, A.B. 2063 #1 | 8,600 | 47937821 |
| 508634 | May 18, 2001 | May 18, 2001 | Crimson Energy Company, LC | Briscoe "E" #87 | 5,500 | 47934615 |
| 509123 | May 17, 2001 | May 17, 2001 | Michael Petroleum Corporation | South Callaghan Ranch #177 | 8,500 | 47937820 |
| 509113 | May 17, 2001 | May 17, 2001 | EOG Resources, Inc. | Horton #1 | 11,000 | 47937819 |
| 509094 | May 17, 2001 | May 17, 2001 | Crimson Energy Company, LC | Briscoe "E" #110 | 6,200 | 47937818 |
| 508951 | May 17, 2001 | May 17, 2001 | Cox, Martin Regan | Armstrong Bros. #2S | 2,250 | 47937814 |
| 508950 | May 17, 2001 | May 17, 2001 | Cox, Martin Regan | Armstrong Bros. #1S | 2,250 | 47937813 |
| 509043 | May 16, 2001 | May 16, 2001 | Kerns O & G, Inc. | Petty Ranch #1020 | 5,500 | 47937817 |
| 508989 | May 16, 2001 | May 16, 2001 | Cox, Martin Regan | Armstrong Bros. #1D | 10,500 | 47934506 |
| 509011 | May 15, 2001 | May 15, 2001 | Conoco Inc. | Hirsch Estate 2096 #7 | 14,450 | 47937812 |
| 508928 | May 15, 2001 | May 15, 2001 | Conoco Inc. | Bruni Ranch #70 | 11,900 | 47937811 |
| 508909 | May 14, 2001 | May 14, 2001 | Conoco Inc. | B.M.T. #139 | 10,800 | 47937810 |
| 508892 | May 14, 2001 | May 14, 2001 | Conoco Inc. | B.M.T. #156 | 10,850 | 47937809 |
| 508743 | May 9, 2001 | May 9, 2001 | EOG Resources, Inc. | BMT/K&H "C" #5 | 11,500 | 47937808 |
| 508709 | May 9, 2001 | May 9, 2001 | Kerns O & G, Inc. | Petty Ranch #1217 | 5,500 | 47937807 |
| 508671 | May 8, 2001 | May 8, 2001 | Calpine Natural Gas Company | Lundell Ranch #8 | 11,200 | 47937806 |
| 508657 | May 8, 2001 | May 8, 2001 | Lewis Petro Properties, Inc. | Palafox 2182 - F #34 | 9,000 | 47937804 |
| 508656 | May 8, 2001 | May 8, 2001 | Lewis Petro Properties, Inc. | Palafox 2182 - 8 E #32 | 7,000 | 47937805 |
| 508639 | May 8, 2001 | May 8, 2001 | Conoco Inc. | Vaquillas Ranch Co. Ltd #67 | 10,400 | 47937803 |
| 508540 | May 4, 2001 | May 4, 2001 | Lewis Petro Properties, Inc. | Palafox 2182 18 F #23 | 5,800 | 47937802 |
| 508352 | May 4, 2001 | May 4, 2001 | Virtex Petroleum Company, Inc. | Briscoe "F" #209 | 5,000 | 47937796 |
| 508351 | May 4, 2001 | May 4, 2001 | Virtex Petroleum Company, Inc. | Briscoe "F" #2011 | 5,000 | 47937797 |
| 508465 | May 2, 2001 | May 2, 2001 | Conoco Inc. | Despain, Walter #3 | 12,155 | 47937801 |
| 508446 | May 2, 2001 | May 2, 2001 | Conoco Inc. | Bruni Ranch #62 | 12,200 | 47937800 |