| 478507 | Aug 5, 1998 | Aug 5, 1998 | Gruy Petroleum Management Co. | Lilly #144531873 | 8,500 |
| 478507Amendment | Aug 5, 1998 | Aug 5, 1998 | Gruy Petroleum Management Co. | Lilly #144531873 | 8,500 |
| 477977 | Jul 16, 1998 | Jul 16, 1998 | Texland-Rector & Schumacher | Adcock, D. L. #1D44500431 | 9,303 |
| 477721 | Jul 9, 1998 | Jul 9, 1998 | Amerada Hess Corporation | Miller, W. O. #3H44500059 | 5,000 |
| 476603 | Jul 9, 1998 | Jul 9, 1998 | Wiser Oil Company, The | Wellman Unit #51344531872 | 10,500 |
| 477301 | Jun 22, 1998 | Jun 22, 1998 | Quintana Pet. Corp. | Telford #108844531511 | 11,999 |
| 476551 | May 27, 1998 | May 27, 1998 | Amerada Hess Corporation | Willard, W. N. #144500063 | 13,500 |
| 476447 | May 21, 1998 | May 21, 1998 | R K Petroleum Corporation | Keesee #144531871 | 10,100 |
| 475997 | May 5, 1998 | May 5, 1998 | Wiser Oil Company, The | Camelback #144531870 | 13,500 |
| 475997Amendment | May 5, 1998 | May 5, 1998 | Wiser Oil Company, The | Wellman Unit #81044531870 | 10,500 |
| 473895 | Apr 14, 1998 | Apr 14, 1998 | Wiser Oil Company, The | Wellman Unit #8644500423 | 9,700 |
| 473170 | Feb 12, 1998 | Feb 12, 1998 | Yucca Energy, Inc. | Jones #344531869 | 5,200 |
| 473030 | Feb 9, 1998 | Feb 9, 1998 | R K Petroleum Corporation | Wheatley A #144531868 | 10,200 |
| 472645 | Jan 27, 1998 | Jan 27, 1998 | Chevron U. S. A. Inc. | Investors Royalty "A" #3944531867 | 8,900 |
| 471862 | Jan 20, 1998 | Jan 20, 1998 | Trail Mountain, Inc. | Helen #244531866 | 8,300 |
| 471862Amendment | Jan 20, 1998 | Jan 20, 1998 | Trail Mountain, Inc. | Helen #244531866 | 8,300 |
| 471862Amendment | Jan 20, 1998 | Jan 20, 1998 | Trail Mountain, Inc. | Helen #244531866 | 8,300 |
| 470654 | Jan 15, 1998 | Jan 15, 1998 | Pennzoil Exploration & Prod. Co. | Gordon, M. G. #4744531860 | 7,700 |
| 471592 | Dec 23, 1997 | Dec 23, 1997 | Henry Petroleum Corp. | Warhorse #144531865 | 6,200 |
| 470273 | Dec 18, 1997 | Dec 18, 1997 | Pennzoil Exploration & Prod. Co. | Mallet Land & Cattle Co. #11344531859 | 8,200 |
| 471108 | Dec 11, 1997 | Dec 11, 1997 | Santa FE Energy Resources, Inc. | Wellman, West Unit #2944531864 | 5,700 |
| 471107 | Dec 11, 1997 | Dec 11, 1997 | Santa FE Energy Resources, Inc. | Wellman, West Unit #3144531863 | 5,700 |
| 471106 | Dec 11, 1997 | Dec 11, 1997 | Santa FE Energy Resources, Inc. | Wellman, West Unit #3344531861 | 5,700 |
| 471105 | Dec 11, 1997 | Dec 11, 1997 | Santa FE Energy Resources, Inc. | Wellman, West Unit #3244531862 | 5,700 |
| 469859 | Dec 10, 1997 | Dec 10, 1997 | Pennzoil Exploration & Prod. Co. | Mallet Land & Cattle Co. #11244531857 | 8,200 |
| 470276 | Nov 20, 1997 | Nov 20, 1997 | R K Petroleum Corporation | Earnest #1HH44530914 | 12,850 |
| 470169 | Nov 17, 1997 | Nov 17, 1997 | Wiser Oil Company, The | Wellman Unit #41144531858 | 10,500 |
| 469564 | Nov 5, 1997 | Nov 5, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #32944531856 | 7,000 |
| 469130 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #32644531854 | 7,000 |
| 469129 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #32744532057 | 7,000 |
| 469128 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #32844531852 | 7,000 |
| 469127 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #33044531851 | 7,000 |
| 469126 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #33144531850 | 7,000 |
| 469125 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #33244531849 | 7,000 |
| 469124 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #33344531848 | 7,000 |
| 469123 | Nov 4, 1997 | Nov 4, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #33444531847 | 7,000 |
| 469154 | Oct 29, 1997 | Oct 29, 1997 | Pennzoil Exploration & Prod. Co. | Mallett Land & Cattle Co. #11144531855 | 8,700 |
| 469014 | Oct 20, 1997 | Oct 20, 1997 | Yucca Energy, Inc. | Jones #244531846 | 7,200 |
| 468652 | Oct 16, 1997 | Oct 16, 1997 | Landreth, Robert E. | Nystel, J. P. "B" #644531845 | 5,000 |
| 466365 | Oct 14, 1997 | Oct 14, 1997 | Pennzoil Exploration & Prod. Co. | Gordon, M. G. #4644531832 | 7,850 |
| 468059 | Sep 25, 1997 | Sep 25, 1997 | Western Oil and Gas Dev. Corp. | Spradling #144531844 | 13,000 |
| 467610 | Sep 22, 1997 | Sep 22, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #32544531843 | 7,000 |
| 467609 | Sep 22, 1997 | Sep 22, 1997 | Altura Energy Ltd. | Prentice Central Clearfork Unit #21144531842 | 7,000 |
| 466920 | Sep 12, 1997 | Sep 12, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #55444531840 | 7,400 |
| 467326 | Sep 9, 1997 | Sep 9, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #28744531841 | 7,400 |
| 466690 | Aug 29, 1997 | Aug 29, 1997 | Texland-Rector & Schumacher | Amoco-Brown #444531839 | 6,900 |
| 466721 | Aug 27, 1997 | Aug 27, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #61444531838 | 7,400 |
| 466720 | Aug 27, 1997 | Aug 27, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #52944531837 | 7,400 |
| 466719 | Aug 27, 1997 | Aug 27, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #27344531836 | 7,400 |
| 466718 | Aug 27, 1997 | Aug 27, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #26344531835 | 7,400 |
| 466717 | Aug 27, 1997 | Aug 27, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #26244531834 | 7,400 |
| 466602 | Aug 21, 1997 | Aug 21, 1997 | Brigham Oil & Gas, L.P. | Marcie "12" #144531833 | 12,100 |
| 466328 | Aug 18, 1997 | Aug 18, 1997 | R K Petroleum Corporation | Wheatley #144531831 | 10,200 |
| 466008 | Aug 18, 1997 | Aug 18, 1997 | Texland-Rector & Schumacher | Jones, Ray #144531830 | 7,600 |
| 466008Amendment | Aug 18, 1997 | Aug 18, 1997 | Renaud Oil Corporation | Amoco-Brown #444531830 | 7,600 |
| 465671 | Aug 5, 1997 | Aug 5, 1997 | Pennzoil Exploration & Prod. Co. | Mallet Land & Cattle Co. #11044531829 | 8,900 |
| 464096 | Jul 24, 1997 | Jul 24, 1997 | Pennzoil Exploration & Prod. Co. | Mallet Land & Cattle Co. #10844531828 | 5,200 |
| 464080 | Jul 17, 1997 | Jul 17, 1997 | Pennzoil Exploration & Prod. Co. | Mallet Land & Cattle Co. #10944531827 | 5,200 |
| 463414 | Jul 9, 1997 | Jul 9, 1997 | Wiser Oil Company, The | Wellman Unit #41044531825 | 10,500 |
| 463405 | Jul 9, 1997 | Jul 9, 1997 | Wiser Oil Company, The | Wellman Unit #8944531824 | 10,500 |
| 463003 | Jul 9, 1997 | Jul 9, 1997 | Wiser Oil Company, The | Wellman Unit #501044531434 | 10,000 |
| 463002 | Jul 9, 1997 | Jul 9, 1997 | Wiser Oil Company, The | Wellman Unit #4544500087 | 9,800 |
| 463121 | Jun 30, 1997 | Jun 30, 1997 | Parker & Parsley Development L.P | Wisdom #101H44531013 | 12,000 |
| 463498 | Jun 9, 1997 | Jun 9, 1997 | Umc Petroleum Corporation | NE Welch Unit #91144531826 | 5,050 |
| 463294 | Jun 6, 1997 | Jun 6, 1997 | Pennzoil Exploration & Prod. Co. | Mallet Land & Cattle Co. #10744531823 | 8,200 |
| 463018 | May 29, 1997 | May 29, 1997 | Trail Mountain, Inc. | Christine #144531822 | 8,900 |
| 462704 | May 28, 1997 | May 28, 1997 | Trail Mountain, Inc. | Jones #244531753 | 8,500 |
| 462704Amendment | May 28, 1997 | May 28, 1997 | Trail Mountain, Inc. | Jones #244531753 | 8,500 |
| 462182 | May 9, 1997 | May 9, 1997 | R K Petroleum Corporation | Ross #144531821 | 13,500 |
| 462046 | May 9, 1997 | May 9, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #59244531880 | 7,400 |
| 462045 | May 9, 1997 | May 9, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #54544531819 | 7,400 |
| 462044 | May 9, 1997 | May 9, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #60544531818 | 7,400 |
| 462043 | May 9, 1997 | May 9, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #54844531817 | 7,400 |
| 462042 | May 9, 1997 | May 9, 1997 | Cross Timbers Operating Company | Prentice Northeast Unit #54644531816 | 7,400 |
| 460539 | May 6, 1997 | May 6, 1997 | Parker & Parsley Development L.P | Cletus #144531814 | 12,000 |
| 461779 | Apr 30, 1997 | Apr 30, 1997 | Trail Mountain, Inc. | Jones #344531815 | 8,900 |
| 460347 | Mar 27, 1997 | Mar 27, 1997 | Landreth, Robert E. | Nystel, J.P. "A" #344530824 | 11,494 |
| 459803 | Mar 14, 1997 | Mar 14, 1997 | Great Western Drlg. Co. | Jacobson Trail #144531813 | 8,100 |
| 459593 | Mar 7, 1997 | Mar 7, 1997 | Remuda Operating Company | French "B" #644531812 | 5,000 |
| 455415 | Feb 28, 1997 | Feb 28, 1997 | Patrick Exploration Company | Hinson #144531803 | 9,600 |
| 458633 | Feb 18, 1997 | Feb 18, 1997 | Chevron U. S. A. Inc. | Investors Royalty "A" #3844531811 | 8,900 |
| 458511 | Feb 14, 1997 | Feb 14, 1997 | Amerada Hess Corporation | Adair Wolfcamp Unit #50444531810 | 8,700 |
| 457507 | Jan 17, 1997 | Jan 17, 1997 | Gaea Services, Inc. | Alexander #121744531809 | 5,300 |
| 457338 | Jan 17, 1997 | Jan 17, 1997 | Texland-Rector & Schumacher | Amoco-Brown #344531808 | 6,900 |
| 455898 | Jan 17, 1997 | Jan 17, 1997 | Wiser Oil Company, The | Wellman Unit #5944531117 | 10,000 |
| 456789 | Dec 31, 1996 | Dec 31, 1996 | Texland-Rector & Schumacher | Pool-Hannes #153644531807 | 5,300 |
| 456532 | Dec 23, 1996 | Dec 23, 1996 | Limark Corporation | Wagner, L.V. #1H44531217 | 11,830 |
| 456325 | Dec 13, 1996 | Dec 13, 1996 | Parker & Parsley Development L.P | Ramsey #10144530975 | 9,627 |
| 456055 | Dec 10, 1996 | Dec 10, 1996 | Taylor, J. S. Inc. | French #1H44531526 | 4,920 |
| 455971 | Dec 10, 1996 | Dec 10, 1996 | Great Western Drlg. Co. | Jones-David #144531806 | 8,100 |
| 466667 | Dec 3, 1996 | Dec 3, 1996 | Texland-Rector & Schumacher | Young, E. #144530636 | 6,600 |
| 466667Amendment | Dec 3, 1996 | Dec 3, 1996 | Texland-Rector & Schumacher | Young, E. #144530636 | 6,600 |
| 455755 | Dec 2, 1996 | Dec 2, 1996 | Cross Timbers Operating Company | Prentice Northeast Unit #75144531804 | 7,250 |
| 455650 | Dec 2, 1996 | Dec 2, 1996 | Trail Mountain, Inc. | Jones #344531805 | 8,200 |
| 455650Amendment | Dec 2, 1996 | Dec 2, 1996 | Trail Mountain, Inc. | Jones #344531805 | 8,200 |
| 455650Amendment | Dec 2, 1996 | Dec 2, 1996 | Trail Mountain, Inc. | Helen #144531805 | 8,200 |
| 454035 | Oct 21, 1996 | Oct 21, 1996 | Cross Timbers Operating Company | Prentice Northeast Unit #75344531796 | 7,300 |
| 454034 | Oct 21, 1996 | Oct 21, 1996 | Cross Timbers Operating Company | Prentice Northeast Unit #74744531795 | 7,150 |
| 454033 | Oct 21, 1996 | Oct 21, 1996 | Cross Timbers Operating Company | Prentice Northeast Unit #69544531802 | 7,300 |
| 454032 | Oct 21, 1996 | Oct 21, 1996 | Cross Timbers Operating Company | Prentice Northeast Unit #68944531801 | 7,150 |