| 497146 | Jul 12, 2000 | Jul 12, 2000 | Apache Corporation | Knolle Georgetown G.um #1HH | 13,500 | 05132052 |
| 496734 | Jun 30, 2000 | Jun 30, 2000 | Williams, Clayton Energy, Inc. | Alford-Seilevco H Unit #1H | 7,500 | 05133584 |
| 496734Amendment | Jun 30, 2000 | Jun 30, 2000 | Williams, Clayton Energy, Inc. | Alford-Seilevco H Unit #1H | 6,500 | 05133584 |
| 495949 | Jun 8, 2000 | Jun 8, 2000 | Union Pacific Resources Company | Porter, J. Holland #1REH | 14,000 | 05133139 |
| 495546 | May 26, 2000 | May 26, 2000 | Apache Corporation | T.A.M.U. #3H | 15,500 | 05133364 |
| 495254 | May 19, 2000 | May 19, 2000 | Bar-Mac Investments Inc. | Watson "A" #1 | 4,500 | 05133583 |
| 494944 | May 11, 2000 | May 11, 2000 | Union Pacific Resources Company | Bush-Bush Unit #1REH | 14,000 | 05133320 |
| 494673 | May 3, 2000 | May 3, 2000 | Apache Corporation | T.A.M.U. #4H | 13,500 | 05133363 |
| 494673Amendment | May 3, 2000 | May 3, 2000 | Apache Corporation | Reveille #2H | 13,427 | 05133363 |
| 494085 | Apr 14, 2000 | Apr 14, 2000 | Union Pacific Resources Company | Knox #2REH | 14,500 | 05132825 |
| 494084 | Apr 14, 2000 | Apr 14, 2000 | Union Pacific Resources Company | Lightsey-Trcalek Unit #1H | 8,000 | 05133582 |
| 494032 | Apr 13, 2000 | Apr 13, 2000 | Union Pacific Resources Company | Lightsey, Walter #2REH | 10,000 | 05133023 |
| 493863 | Apr 12, 2000 | Apr 12, 2000 | Ginger Petroleum Company, Inc. | Giddings #2H | 12,000 | 05133312 |
| 493617 | Mar 30, 2000 | Mar 30, 2000 | Apache Corporation | Reveille #1H | 15,500 | 05133169 |
| 493617Amendment | Mar 30, 2000 | Mar 30, 2000 | Apache Corporation | Reveille #1H | 15,464 | 05133169 |
| 493564 | Mar 29, 2000 | Mar 29, 2000 | Union Pacific Resources Company | Loehr Unit #3H | 14,000 | 05133581 |
| 492944 | Mar 10, 2000 | Mar 10, 2000 | Williams, Clayton Energy, Inc. | Porter-Trask #1H | 8,000 | 05133580 |
| 492942 | Mar 10, 2000 | Mar 10, 2000 | Union Pacific Resources Company | Loehr, A. #1HH | 7,484 | 05131076 |
| 492399 | Feb 25, 2000 | Feb 25, 2000 | Williams, Clayton Energy, Inc. | Cotrone-Jewish Welfare Unit #2H | 7,500 | 05133579 |
| 492399Amendment | Feb 25, 2000 | Feb 25, 2000 | Williams, Clayton Energy, Inc. | Cotrone-Jewish Welfare Unit #2H | 7,500 | 05133579 |
| 492149 | Feb 16, 2000 | Feb 16, 2000 | Williams, Clayton Energy, Inc. | Demny-Japhet Unit #1H | 7,000 | 05133477 |
| 492149Amendment | Feb 16, 2000 | Feb 16, 2000 | Williams, Clayton Energy, Inc. | Demny-Japhet Unit #1H | 7,000 | 05133477 |
| 491479 | Jan 27, 2000 | Jan 27, 2000 | Union Pacific Resources Company | Stefka R. E. - Orsag #1H | 8,000 | 05133019 |
| 491127 | Jan 18, 2000 | Jan 18, 2000 | Williams, Clayton Energy, Inc. | James Wood Unit #2H | 7,500 | 05133578 |
| 491127Amendment | Jan 18, 2000 | Jan 18, 2000 | Williams, Clayton Energy, Inc. | James Wood Unit #2H | 7,500 | 05133578 |
| 491048 | Jan 13, 2000 | Jan 13, 2000 | Union Pacific Resources Company | Calvin-Fachorn Unit #1H | 8,000 | 05133577 |
| 491048Amendment | Jan 13, 2000 | Jan 13, 2000 | Union Pacific Resources Company | Calvin-Fachorn Unit #1H | 8,000 | 05133577 |
| 489966 | Dec 2, 1999 | Dec 2, 1999 | Union Pacific Resources Company | Colt #1H | 6,655 | 05133572 |
| 489553 | Nov 16, 1999 | Nov 16, 1999 | Union Pacific Resources Company | Moehlman, Henry Jr. #1H | 9,955 | 05133237 |
| 488861 | Oct 26, 1999 | Oct 26, 1999 | Great West Energy & Expl., Inc. | Heine #1HH | 8,585 | 05132285 |
| 488111 | Oct 4, 1999 | Oct 4, 1999 | Williams, Clayton Energy, Inc. | Mecom Unit #2H | 7,500 | 05133576 |
| 488111Amendment | Oct 4, 1999 | Oct 4, 1999 | Williams, Clayton Energy, Inc. | Mecom Unit #2H | 7,500 | 05133576 |
| 488111Amendment | Oct 4, 1999 | Oct 4, 1999 | Williams, Clayton Energy, Inc. | Mecom Unit #2H | 7,500 | 05133576 |
| 487116 | Sep 2, 1999 | Sep 2, 1999 | Union Pacific Resources Company | BI - County #4H | 6,500 | 05133575 |
| 486900 | Aug 24, 1999 | Aug 24, 1999 | Union Pacific Resources Company | Smith, Jessie #1REH | 14,500 | 05133060 |
| 486900Amendment | Aug 24, 1999 | Aug 24, 1999 | Union Pacific Resources Company | Smith, Jessie #1REH | 14,500 | 05133060 |
| 486094 | Aug 17, 1999 | Aug 17, 1999 | Cox & Perkins Exploration, Inc. | Leggio-Schubert Unit #1REH | 9,000 | 05131207 |
| 486452 | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Filippone #2REH | 12,500 | 05130386 |
| 486452Amendment | Aug 6, 1999 | Aug 6, 1999 | Union Pacific Resources Company | Filippone #2REH | 12,500 | 05130386 |
| 486329 | Aug 4, 1999 | Aug 4, 1999 | Cox & Perkins Exploration, Inc. | Crook Unit #3REH | 9,000 | 05133098 |
| 484923 | Jun 2, 1999 | Jun 2, 1999 | Bar-Mac Investments Inc. | Becvar-Watson Unit #1 | 4,500 | 05133574 |
| 482980 | Mar 25, 1999 | Mar 25, 1999 | Apache Corporation | Dillon, Don et Al #1 | 8,200 | 05131431 |
| 482293 | Jan 29, 1999 | Jan 29, 1999 | Union Pacific Resources Company | Yegua-Ware Unit #1REH | 12,000 | 05133342 |
| 482293Amendment | Jan 29, 1999 | Jan 29, 1999 | Union Pacific Resources Company | Yegua-Ware Unit #1REH | 12,000 | 05133342 |
| 480384 | Oct 22, 1998 | Oct 22, 1998 | Keystone Exploration, Inc | Lightsey-Urbanowsky #1HH | 9,040 | 05131477 |
| 479408 | Sep 11, 1998 | Sep 11, 1998 | Henry, John Petroleum | Hester #1HH | 10,008 | 05132115 |
| 478715 | Aug 13, 1998 | Aug 13, 1998 | Diamond Oil and Gas, Inc. | Lecour, Joe L. Jr. #1X | 8,900 | 05131091 |
| 476615 | Aug 10, 1998 | Aug 10, 1998 | Ginger Petroleum Company, Inc. | Thompson-Provazek Unit #1HH | 10,300 | 05132205 |
| 476615Amendment | Aug 10, 1998 | Aug 10, 1998 | Ginger Petroleum Company, Inc. | Thompson-Provazek Unit #1HH | 10,300 | 05132205 |
| 478363 | Jul 30, 1998 | Jul 30, 1998 | 7711 Corporation, The | Buffalo Ranch #1HH | 9,777 | 05133380 |
| 478356 | Jul 30, 1998 | Jul 30, 1998 | Goldrus Producing Company | Russell-Loehr Unit #1H | 7,400 | 05131211 |
| 478094 | Jul 21, 1998 | Jul 21, 1998 | Sage Energy Company | Piwonka, Lillian #4H | 8,200 | 05133300 |
| 477996 | Jul 21, 1998 | Jul 21, 1998 | Union Pacific Resources Company | Zgabay, Edwin C #1REH | 8,500 | 05131678 |
| 477525 | Jun 30, 1998 | Jun 30, 1998 | Sage Energy Company | Hicks, W. B. #3H | 7,800 | 05133244 |
| 477285 | Jun 29, 1998 | Jun 29, 1998 | Union Pacific Resources Company | Last Chance #1H | 18,600 | 05133568 |
| 477036 | Jun 18, 1998 | Jun 18, 1998 | Ginger Petroleum Company, Inc. | Lee, Mary #2HH | 10,500 | 05131378 |
| 477036Amendment | Jun 18, 1998 | Jun 18, 1998 | Ginger Petroleum Company, Inc. | Lee, Mary #2HH | 10,500 | 05131378 |
| 477037 | Jun 12, 1998 | Jun 12, 1998 | Sage Energy Company | Glidewell-Proske #1H | 11,500 | 05133276 |
| 476772 | Jun 2, 1998 | Jun 2, 1998 | Sage Energy Company | Lehde-Lela Unit #1H | 8,100 | 05133330 |
| 476671 | May 29, 1998 | May 29, 1998 | 7711 Corporation, The | Fabian Unit #1HH | 7,777 | 05133573 |
| 476671Amendment | May 29, 1998 | May 29, 1998 | 7711 Corporation, The | Fabian Unit #1HH | 7,777 | 05133573 |
| 474899 | Apr 3, 1998 | Apr 3, 1998 | Union Pacific Resources Company | J. D. Autrey Unit #1REH | 13,000 | 05133063 |
| 474815 | Mar 30, 1998 | Mar 30, 1998 | Union Pacific Resources Company | Colt Unit #1H | 7,000 | 05133572 |
| 474439 | Mar 20, 1998 | Mar 20, 1998 | Union Pacific Resources Company | Lisa -B- #4REH | 8,600 | 05130554 |
| 474022 | Mar 4, 1998 | Mar 4, 1998 | Bar-Mac Investments Inc. | Armstrong "A" #2 | 4,450 | 05133571 |
| 473859 | Feb 27, 1998 | Feb 27, 1998 | Union Pacific Resources Company | Herrmann, Roy #5REH | 9,000 | 05131704 |
| 473716 | Feb 24, 1998 | Feb 24, 1998 | Great West Energy & Expl., Inc. | Heine #1HH | 8,585 | 05132285 |
| 470648 | Jan 27, 1998 | Jan 27, 1998 | Sage Energy Company | Frank Unit #1HH | 7,900 | 05132722 |
| 472317 | Jan 20, 1998 | Jan 20, 1998 | Westlands Resources Corporation | Kubena #3HH | 7,900 | 05133570 |
| 472045 | Jan 9, 1998 | Jan 9, 1998 | Williams, Clayton Energy, Inc. | Erickson OL Unit #1H | 6,850 | 05133569 |
| 472045Amendment | Jan 9, 1998 | Jan 9, 1998 | Williams, Clayton Energy, Inc. | Erickson OL Unit #1H | 6,850 | 05133569 |
| 472045Amendment | Jan 9, 1998 | Jan 9, 1998 | Williams, Clayton Energy, Inc. | Erickson OL Unit #1H | 7,200 | 05133569 |
| 470129 | Dec 23, 1997 | Dec 23, 1997 | Westlands Resources Corporation | DRC VI #1H | 8,500 | 05133399 |
| 471213 | Dec 16, 1997 | Dec 16, 1997 | Union Pacific Resources Company | Last Chance #1H | 18,600 | 05133568 |
| 470512 | Nov 24, 1997 | Nov 24, 1997 | Williams, Clayton Energy, Inc. | Rathjen OL Unit #1H | 7,500 | 05133567 |
| 470512Amendment | Nov 24, 1997 | Nov 24, 1997 | Williams, Clayton Energy, Inc. | Rathjen OL Unit #1H | 7,500 | 05133567 |
| 469606 | Nov 3, 1997 | Nov 3, 1997 | Akg Operating Company | Lewis, Hubert #1HH | 9,268 | 05133190 |
| 469348 | Oct 27, 1997 | Oct 27, 1997 | Bar-Mac Investments Inc. | Becvar #1 | 4,700 | 05133566 |
| 468491 | Oct 6, 1997 | Oct 6, 1997 | Diamond Oil and Gas, Inc. | Suda-Luska #2H | 8,850 | 05131841 |
| 468491Amendment | Oct 6, 1997 | Oct 6, 1997 | Diamond Oil and Gas, Inc. | Suda #2HH | 8,850 | 05131841 |
| 467835 | Sep 19, 1997 | Sep 19, 1997 | Atasca Resources, Inc. | Spearman-Alford Unit #1H | 10,799 | 05133333 |
| 467508 | Sep 15, 1997 | Sep 15, 1997 | Williams, Clayton Energy, Inc. | TCB Rader Unit #2H | 7,100 | 05133565 |
| 467548 | Sep 12, 1997 | Sep 12, 1997 | Akg Operating Company | B-S Unit #1HH | 8,947 | 05131145 |
| 465139 | Sep 5, 1997 | Sep 5, 1997 | Ginger Petroleum Company, Inc. | Provazek #1 | 8,152 | 05132252 |
| 467178 | Sep 4, 1997 | Sep 4, 1997 | Akg Operating Company | K-J Unit #1HH | 9,186 | 05130642 |
| 467090 | Sep 2, 1997 | Sep 2, 1997 | Landmark Exploration Inc. | Chmelar, Emanuel #1H | 9,000 | 05133564 |
| 467090Amendment | Sep 2, 1997 | Sep 2, 1997 | Landmark Exploration Inc. | Chmelar, Emanuel #1H | 9,000 | 05133564 |
| 467090Amendment | Sep 2, 1997 | Sep 2, 1997 | Landmark Exploration Inc. | Chmelar, Emanuel #1H | 9,000 | 05133564 |
| 466789 | Aug 26, 1997 | Aug 26, 1997 | Akg Operating Company | K-J Unit #1HH | 9,250 | 05130495 |
| 466696 | Aug 25, 1997 | Aug 25, 1997 | Bar-Mac Investments Inc. | Arm-Du Unit #1 | 4,700 | 05133563 |
| 466308 | Aug 15, 1997 | Aug 15, 1997 | Gsi Oil & Gas, Inc. | M & B SWD #1 | 7,500 | 05133562 |
| 466308Amendment | Aug 15, 1997 | Aug 15, 1997 | Gsi Oil & Gas, Inc. | M & B SWD #1 | 7,700 | 05133562 |
| 465916 | Aug 7, 1997 | Aug 7, 1997 | Union Pacific Resources Company | Weeber #1H | 7,500 | 05132276 |
| 465916Amendment | Aug 7, 1997 | Aug 7, 1997 | Union Pacific Resources Company | Weeber #1H | 7,500 | 05132276 |
| 465912 | Aug 7, 1997 | Aug 7, 1997 | Williams, Clayton Energy, Inc. | Lewis-Monical #1H | 8,100 | 05132664 |
| 465559 | Jul 28, 1997 | Jul 28, 1997 | Akg Operating Company | Knesek-Bohacek Unit #1HH | 8,961 | 05131759 |
| 465559Amendment | Jul 28, 1997 | Jul 28, 1997 | Akg Operating Company | Knesek-Bohacek Unit #1HH | 8,961 | 05131759 |
| 465069 | Jul 18, 1997 | Jul 18, 1997 | Union Pacific Resources Company | Lois #3AH | 10,500 | 05132773 |
| 465069Amendment | Jul 18, 1997 | Jul 18, 1997 | Adams Resources Expl. Corp. | Lois Unit #3AH | 10,500 | 05132773 |
| 463953 | Jul 16, 1997 | Jul 16, 1997 | Bar-Mac Investments Inc. | De-Ann #1 | 4,600 | 05133561 |