| 481173 | Dec 3, 1998 | Dec 3, 1998 | Duncan Oil Properties, Inc. | Worley -B- #1034 | 3,250 | 17932371 |
| 481174 | Dec 2, 1998 | Dec 2, 1998 | Duncan Oil Properties, Inc. | Worley -B- #2034 | 3,250 | 17932372 |
| 478510 | Oct 5, 1998 | Oct 5, 1998 | Gruy Petroleum Management Co. | Patterson #1 | 3,000 | 17980151 |
| 478509 | Oct 5, 1998 | Oct 5, 1998 | Gruy Petroleum Management Co. | Barker -A- #1 | 2,769 | 17901927 |
| 478155 | Oct 5, 1998 | Oct 5, 1998 | Gruy Petroleum Management Co. | Fowler -C- #1 | 3,000 | 17901984 |
| 479859 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Fowler -F- #2 | 4,000 | 17932370 |
| 479859 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Fowler -F- #2 | 4,000 | 17932370 |
| 479858 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Brazos River Gas #2 | 4,000 | 17932367 |
| 479858 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Brazos River Gas #2 | 4,000 | 17932367 |
| 479857 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Noel #2 | 4,000 | 17932368 |
| 479857 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Noel #2 | 4,000 | 17932368 |
| 479856 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Fowler -E- #2 | 4,000 | 17932369 |
| 479856 | Oct 1, 1998 | Oct 1, 1998 | Gruy Petroleum Management Co. | Fowler -E- #2 | 4,000 | 17932369 |
| 479615 | Sep 21, 1998 | Sep 21, 1998 | Gruy Petroleum Management Co. | Darsey #3 | 4,000 | 17932366 |
| 479614 | Sep 21, 1998 | Sep 21, 1998 | Gruy Petroleum Management Co. | Yoes #2 | 4,000 | 17932365 |
| 479613 | Sep 21, 1998 | Sep 21, 1998 | Gruy Petroleum Management Co. | Darsey -A- #2 | 4,000 | 17932364 |
| 479420 | Sep 14, 1998 | Sep 14, 1998 | Gruy Petroleum Management Co. | Cousins #2 | 4,000 | 17932363 |
| 479419 | Sep 14, 1998 | Sep 14, 1998 | Gruy Petroleum Management Co. | Wilson -A- #2 | 4,000 | 17932362 |
| 479377 | Sep 10, 1998 | Sep 10, 1998 | Gruy Petroleum Management Co. | Stubbs #2 | 4,000 | 17932361 |
| 477765 | Aug 19, 1998 | Aug 19, 1998 | Seagull Energy E&P Inc. | Parker #26 | 2,400 | 17932359 |
| 477764 | Aug 19, 1998 | Aug 19, 1998 | Seagull Energy E&P Inc. | Parker #25 | 2,250 | 17932358 |
| 477764 | Aug 19, 1998 | Aug 19, 1998 | The Operating Co. | Parker #25 | 2,400 | 17932358 |
| 478156 | Aug 14, 1998 | Aug 14, 1998 | Gruy Petroleum Management Co. | Dwyer #1 | 2,800 | 17901047 |
| 478154 | Aug 14, 1998 | Aug 14, 1998 | Gruy Petroleum Management Co. | Major -A- #1 | 3,000 | 17901046 |
| 478153 | Aug 14, 1998 | Aug 14, 1998 | Gruy Petroleum Management Co. | Hudgins #1 | 3,000 | 17901045 |
| 478511 | Aug 12, 1998 | Aug 12, 1998 | Gruy Petroleum Management Co. | Cubine #1 | 3,000 | 17901080 |
| 478348 | Jul 31, 1998 | Jul 31, 1998 | Phillips Petroleum Company | Hessey #1R | 2,550 | 17932360 |
| 475952 | Jul 6, 1998 | Jul 6, 1998 | Smith, W.T. | McLarty Estate "A" #1 | 2,425 | 17901508 |
| 477446 | Jun 25, 1998 | Jun 25, 1998 | Gruy Petroleum Management Co. | Moreman #2 | 4,000 | 17932357 |
| 477258 | Jun 18, 1998 | Jun 18, 1998 | Gruy Petroleum Management Co. | Hudgins -B- #3 | 4,000 | 17932356 |
| 477181 | Jun 15, 1998 | Jun 15, 1998 | Gruy Petroleum Management Co. | Callham #2 | 4,000 | 17932355 |
| 476173 | Jun 8, 1998 | Jun 8, 1998 | Gruy Petroleum Management Co. | Herrington #1 | 3,000 | 17901945 |
| 476740 | Jun 4, 1998 | Jun 4, 1998 | Gruy Petroleum Management Co. | Hibler #1 | 3,000 | 17980126 |
| 476556 | May 22, 1998 | May 22, 1998 | Gruy Petroleum Management Co. | Coffield #2 | 4,000 | 17932353 |
| 476556 | May 22, 1998 | May 22, 1998 | Gruy Petroleum Management Co. | Coffield #2 | 4,000 | 17932353 |
| 476515 | May 21, 1998 | May 21, 1998 | Gruy Petroleum Management Co. | Kennedy #2 | 3,000 | 17932352 |
| 475732 | May 1, 1998 | May 1, 1998 | Gruy Petroleum Management Co. | Willis -A- #1 | 2,800 | 17980166 |
| 475863 | Apr 30, 1998 | Apr 30, 1998 | Gruy Petroleum Management Co. | Johnson -A- #2 | 3,000 | 17932351 |
| 475809 | Apr 29, 1998 | Apr 29, 1998 | Pantera Energy Company | Powers #1R | 2,900 | 17932350 |
| 475671 | Apr 27, 1998 | Apr 27, 1998 | Gruy Petroleum Management Co. | Williams -H- #3 | 3,000 | 17932349 |
| 475353 | Apr 22, 1998 | Apr 22, 1998 | Gruy Petroleum Management Co. | Hibler -A- #1 | 2,560 | 17901073 |
| 474412 | Apr 10, 1998 | Apr 10, 1998 | Gruy Petroleum Management Co. | Lewis #1 | 3,000 | 17901072 |
| 474411 | Apr 10, 1998 | Apr 10, 1998 | Gruy Petroleum Management Co. | Rice #1 | 3,000 | 17901983 |
| 474410 | Apr 10, 1998 | Apr 10, 1998 | Gruy Petroleum Management Co. | Hunt #1 | 3,000 | 17901048 |
| 475162 | Apr 9, 1998 | Apr 9, 1998 | Beta-Tex, AN Oklahoma Corp. | Parker Fee "A" #62 | 3,000 | 17932348 |
| 474741 | Mar 30, 1998 | Mar 30, 1998 | Texaco E & P Inc. | Davis, M. B. #51 | 2,950 | 17932094 |
| 473687 | Mar 27, 1998 | Mar 27, 1998 | Gruy Petroleum Management Co. | Glass #1 | 2,425 | 17902593 |
| 473582 | Mar 27, 1998 | Mar 27, 1998 | Gruy Petroleum Management Co. | Willis #1 | 3,000 | 17980165 |
| 473581 | Mar 27, 1998 | Mar 27, 1998 | Gruy Petroleum Management Co. | Hornsby #1 | 3,000 | 17980129 |
| 473580 | Mar 27, 1998 | Mar 27, 1998 | Gruy Petroleum Management Co. | Hanner #1X | 3,000 | 17980121 |
| 474721 | Mar 25, 1998 | Mar 25, 1998 | Gruy Petroleum Management Co. | Sullivan #2 | 2,750 | 17932347 |
| 474568 | Mar 20, 1998 | Mar 20, 1998 | E R Operating Company | Melton #17 | 3,600 | 17932346 |
| 474567 | Mar 20, 1998 | Mar 20, 1998 | E R Operating Company | Melton #18 | 3,600 | 17932345 |
| 474565 | Mar 20, 1998 | Mar 20, 1998 | E R Operating Company | Melton #21 | 3,600 | 17932344 |
| 474564 | Mar 20, 1998 | Mar 20, 1998 | E R Operating Company | Melton #22 | 3,700 | 17932343 |
| 474563 | Mar 20, 1998 | Mar 20, 1998 | Gruy Petroleum Management Co. | Tibbets #2 | 2,750 | 17932342 |
| 474407 | Mar 17, 1998 | Mar 17, 1998 | Gruy Petroleum Management Co. | Johnson #2 | 2,750 | 17932341 |
| 473945 | Mar 3, 1998 | Mar 3, 1998 | E R Operating Company | Davidson #7 | 3,800 | 17932340 |
| 473944 | Mar 3, 1998 | Mar 3, 1998 | E R Operating Company | Davidson #8 | 3,800 | 17932339 |
| 473688 | Feb 26, 1998 | Feb 26, 1998 | Gruy Petroleum Management Co. | Hess #1 | 3,000 | 17902123 |
| 473684 | Feb 26, 1998 | Feb 26, 1998 | Gruy Petroleum Management Co. | Krouch #1 | 3,000 | 17901081 |
| 466715 | Feb 23, 1998 | Feb 23, 1998 | O'Neal Cattle Company | Jarvis #2012 | 3,461 | 17931374 |
| 473226 | Feb 11, 1998 | Feb 11, 1998 | Gruy Petroleum Management Co. | Cubine #2 | 2,750 | 17932338 |
| 473166 | Feb 9, 1998 | Feb 9, 1998 | Pantera Energy Company | Bell #1R | 3,406 | 17931142 |
| 473113 | Feb 9, 1998 | Feb 9, 1998 | Gruy Petroleum Management Co. | Patterson #2 | 3,000 | 17932337 |
| 473102 | Feb 9, 1998 | Feb 9, 1998 | E R Operating Company | Davidson #5 | 3,800 | 17932336 |
| 473101 | Feb 9, 1998 | Feb 9, 1998 | E R Operating Company | Davidson #4 | 3,800 | 17932334 |
| 473100 | Feb 9, 1998 | Feb 9, 1998 | E R Operating Company | Davidson #6 | 3,800 | 17932335 |
| 472914 | Feb 4, 1998 | Feb 4, 1998 | E R Operating Company | Melton #12 | 3,600 | 17932333 |
| 472588 | Jan 23, 1998 | Jan 23, 1998 | Gruy Petroleum Management Co. | Barker -A- #2 | 3,000 | 17932332 |
| 472310 | Jan 22, 1998 | Jan 22, 1998 | Gruy Petroleum Management Co. | Magee #1 | 3,000 | 17980144 |
| 472321 | Jan 20, 1998 | Jan 20, 1998 | E R Operating Company | Melton #11 | 3,800 | 17932330 |
| 472320 | Jan 20, 1998 | Jan 20, 1998 | E R Operating Company | Melton #16 | 3,800 | 17932331 |
| 471599 | Jan 20, 1998 | Jan 20, 1998 | Gruy Petroleum Management Co. | Wilson #1 | 3,000 | 17980163 |
| 472311 | Jan 16, 1998 | Jan 16, 1998 | Gruy Petroleum Management Co. | Hibler #2 | 3,000 | 17932329 |
| 472073 | Jan 12, 1998 | Jan 12, 1998 | E R Operating Company | Melton #10 | 3,800 | 17932327 |
| 472072 | Jan 12, 1998 | Jan 12, 1998 | E R Operating Company | Melton #9 | 3,800 | 17932328 |
| 471927 | Jan 7, 1998 | Jan 7, 1998 | Gruy Petroleum Management Co. | Dwyer #2 | 3,000 | 17932326 |
| 471883 | Jan 6, 1998 | Jan 6, 1998 | Raydon Exploration, Inc. | Cook #1 | 10,000 | 17932325 |
| 471883 | Jan 6, 1998 | Jan 6, 1998 | Raydon Exploration, Inc. | Cook #1 | 10,000 | 17932325 |
| 471882 | Jan 6, 1998 | Jan 6, 1998 | Gruy Petroleum Management Co. | Major -A- #2 | 3,000 | 17932324 |
| 471600 | Jan 5, 1998 | Jan 5, 1998 | Gruy Petroleum Management Co. | Gross #1 | 3,000 | 17907356 |
| 471598 | Jan 5, 1998 | Jan 5, 1998 | Gruy Petroleum Management Co. | Lewis #2 | 3,000 | 17901070 |
| 471729 | Dec 30, 1997 | Dec 30, 1997 | Gruy Petroleum Management Co. | Hudgins #2 | 3,000 | 17932323 |
| 471375 | Dec 17, 1997 | Dec 17, 1997 | Gruy Petroleum Management Co. | Willis -A- #2 | 3,000 | 17932322 |
| 470884 | Dec 5, 1997 | Dec 5, 1997 | Gruy Petroleum Management Co. | Glass -A- #2 | 3,000 | 17932321 |
| 470818 | Dec 4, 1997 | Dec 4, 1997 | Gruy Petroleum Management Co. | Hibler -A- #2 | 3,000 | 17932319 |
| 470817 | Dec 4, 1997 | Dec 4, 1997 | Gruy Petroleum Management Co. | Glass #2 | 3,000 | 17932320 |
| 470510 | Nov 24, 1997 | Nov 24, 1997 | Pantera Energy Company | Pinnell #1 R | 2,900 | 17932318 |
| 470510 | Nov 24, 1997 | Nov 24, 1997 | Pantera Energy Company | Pinnell #1 R | 2,900 | 17932318 |
| 470267 | Nov 20, 1997 | Nov 20, 1997 | Caprock Engineering, Inc. | Kayla #2 | 3,407 | 17931675 |
| 469822 | Nov 13, 1997 | Nov 13, 1997 | Mon Corp. | Jackson, Wm. #15 | 3,300 | 17932317 |
| 469862 | Nov 12, 1997 | Nov 12, 1997 | Phillips Petroleum Company | Hope, B.L. #1 | 3,300 | 17904228 |
| 469749 | Nov 6, 1997 | Nov 6, 1997 | Gruy Petroleum Management Co. | Lewis #8 | 3,000 | 17932316 |
| 469671 | Nov 4, 1997 | Nov 4, 1997 | Gruy Petroleum Management Co. | Hess #2 | 3,000 | 17932315 |
| 469669 | Nov 4, 1997 | Nov 4, 1997 | Gruy Petroleum Management Co. | Krouch #2 | 3,000 | 17932314 |
| 469076 | Oct 23, 1997 | Oct 23, 1997 | Gruy Petroleum Management Co. | Beasley #2 | 2,750 | 17900458 |
| 469075 | Oct 23, 1997 | Oct 23, 1997 | Gruy Petroleum Management Co. | Castleberry #1 | 2,500 | 17901043 |
| 469074 | Oct 23, 1997 | Oct 23, 1997 | Gruy Petroleum Management Co. | Stewart #1 | 2,500 | 17901068 |
| 469073 | Oct 23, 1997 | Oct 23, 1997 | Gruy Petroleum Management Co. | Massey #1 | 2,500 | 17901078 |