| 490701Amendment | Dec 28, 1999 | Dec 28, 1999 | North Central Oil Corp. | Jacaman Cattle Company #4 | 11,750 | 47937395 |
| 490693 | Dec 28, 1999 | Dec 28, 1999 | Michael Petroleum Corporation | Fausto #5 | 10,500 | 47937394 |
| 490651 | Dec 27, 1999 | Dec 27, 1999 | Geonatural Resources, Inc. | Bruni Mecom #1 | 8,000 | 47937393 |
| 490340 | Dec 20, 1999 | Dec 20, 1999 | Kerns O & G, Inc. | Petty Ranch #8021 | 5,500 | 47937390 |
| 490475 | Dec 17, 1999 | Dec 17, 1999 | Conoco Inc. | Villarreal State a 768 #2 | 11,100 | 47937392 |
| 490391 | Dec 15, 1999 | Dec 15, 1999 | Sonat Exploration Co. - Houston | Vaquillas Ranch 1627 A #6 | 10,000 | 47937391 |
| 489461 | Dec 15, 1999 | Dec 15, 1999 | North Central Oil Corp. | H. B. Zachry Unit #2 | 6,975 | 47936202 |
| 490217 | Dec 9, 1999 | Dec 9, 1999 | Conoco Inc. | Lechenger #72 | 9,900 | 47937389 |
| 490019 | Dec 9, 1999 | Dec 9, 1999 | Cliffwood Production Co. | The Dinn Mineral Trusts #2 | 12,000 | 47934726 |
| 489992 | Dec 3, 1999 | Dec 3, 1999 | Kerns O & G, Inc. | Gates Ranch "W" #6032 | 5,900 | 47937388 |
| 489971 | Dec 2, 1999 | Dec 2, 1999 | Conoco Inc. | Vaquillas Ranch A1 #187 | 11,500 | 47937387 |
| 489948 | Dec 1, 1999 | Dec 1, 1999 | Conoco Inc. | Frost National Bank #68 | 11,190 | 47937386 |
| 489538 | Nov 24, 1999 | Nov 24, 1999 | Killam Oil Co., Ltd. | Slaughter, Lilia Bruni #3 | 9,730 | 47932806 |
| 489791 | Nov 23, 1999 | Nov 23, 1999 | EOG Resources, Inc. | Villarreal #1 | 11,200 | 47937385 |
| 489664 | Nov 18, 1999 | Nov 18, 1999 | Conoco Inc. | Vaquillas Ranch Co. Ltd. #59 | 10,880 | 47937384 |
| 489663 | Nov 18, 1999 | Nov 18, 1999 | Conoco Inc. | Vaquillas Ranch Co. Ltd. #61 | 10,000 | 47937382 |
| 489662 | Nov 18, 1999 | Nov 18, 1999 | Conoco Inc. | Vaquillas Ranch Co. Ltd. #62 | 10,450 | 47937383 |
| 489661 | Nov 18, 1999 | Nov 18, 1999 | Conoco Inc. | Vaquillas Ranch "A" #186 | 11,500 | 47937381 |
| 489602 | Nov 17, 1999 | Nov 17, 1999 | Cody Energy LLC | Benavides, Rosa V. "C" #9 | 9,800 | 47937380 |
| 489567 | Nov 16, 1999 | Nov 16, 1999 | Michael Petroleum Corporation | South Callaghan Ranch #175 | 10,000 | 47937379 |
| 489455 | Nov 15, 1999 | Nov 15, 1999 | Kerns O & G, Inc. | Gates Ranch 5 #1288 | 5,800 | 47937378 |
| 489268 | Nov 8, 1999 | Nov 8, 1999 | Conoco Inc. | Vaquillas Ranch A1 #185 | 11,650 | 47937377 |
| 489266 | Nov 8, 1999 | Nov 8, 1999 | Conoco Inc. | Vaquillas Ranch A1 #184 | 11,450 | 47937376 |
| 489194 | Nov 5, 1999 | Nov 5, 1999 | EOG Resources, Inc. | Slator Ranch #G1 | 12,000 | 47937374 |
| 489193 | Nov 5, 1999 | Nov 5, 1999 | EOG Resources, Inc. | Slator Ranch #A3 | 11,300 | 47937375 |
| 489134 | Nov 5, 1999 | Nov 5, 1999 | Kerns O & G, Inc. | Petty Ranch #434 | 5,850 | 47933244 |
| 489134Amendment | Nov 5, 1999 | Nov 5, 1999 | Kerns O & G, Inc. | Petty Ranch #434 | 5,850 | 47933244 |
| 488978 | Oct 29, 1999 | Oct 29, 1999 | Conoco Inc. | Vergara #22 | 10,000 | 47937373 |
| 488969 | Oct 28, 1999 | Oct 28, 1999 | Conoco Inc. | Carr #128 | 10,400 | 47937372 |
| 488859 | Oct 26, 1999 | Oct 26, 1999 | Michael Petroleum Corporation | M.M.A. Cattle Co. #8 | 10,000 | 47937371 |
| 488796 | Oct 25, 1999 | Oct 25, 1999 | Conoco Inc. | B. M. T. #120 | 12,600 | 47937370 |
| 488760 | Oct 25, 1999 | Oct 25, 1999 | Kerns O & G, Inc. | Gates Ranch "Le" #107A | 5,800 | 47937369 |
| 488689 | Oct 20, 1999 | Oct 20, 1999 | Conoco Inc. | B. M. T. #117 | 10,600 | 47937368 |
| 488688 | Oct 20, 1999 | Oct 20, 1999 | Conoco Inc. | B. M. T. #116 | 10,600 | 47937367 |
| 488688Amendment | Oct 20, 1999 | Oct 20, 1999 | Conoco Inc. | B.M.T. #116 | 11,850 | 47937367 |
| 488687 | Oct 20, 1999 | Oct 20, 1999 | Conoco Inc. | B. M. T. #115 | 10,600 | 47937366 |
| 488686 | Oct 20, 1999 | Oct 20, 1999 | Conoco Inc. | B. M. T. #112 | 11,500 | 47937364 |
| 488623 | Oct 18, 1999 | Oct 18, 1999 | Columbus Energy Corp. | Clark-Hereford #8 | 7,000 | 47937365 |
| 488623Amendment | Oct 18, 1999 | Oct 18, 1999 | Columbus Energy Corp. | Clark-Hereford #8 | 7,000 | 47937365 |
| 488485 | Oct 14, 1999 | Oct 14, 1999 | Conoco Inc. | Lundell D #2 | 11,656 | 47937363 |
| 488276 | Oct 6, 1999 | Oct 6, 1999 | Kerns O & G, Inc. | Petty Ranch #8034 | 5,900 | 47937362 |
| 488236 | Oct 6, 1999 | Oct 6, 1999 | Michael Petroleum Corporation | Hein, Luz A. Estate #14 | 11,000 | 47937361 |
| 488227 | Oct 6, 1999 | Oct 6, 1999 | Conoco Inc. | B.M.T. #114 | 10,600 | 47937360 |
| 488189 | Oct 6, 1999 | Oct 6, 1999 | Killam Oil Co., Ltd. | Bruni Minerals "B" #16 | 10,300 | 47937358 |
| 488215 | Oct 5, 1999 | Oct 5, 1999 | Eex Corporation | Vergara 1674 #2ST | 11,500 | 47933823 |
| 488211 | Oct 5, 1999 | Oct 5, 1999 | Eex Corporation | Alley #6ST | 10,600 | 47934085 |
| 488131 | Oct 1, 1999 | Oct 1, 1999 | Ricochet Energy, Inc. | Cantu, Vidal Jr. Trust #1 | 6,409 | 47936585 |
| 488125 | Oct 1, 1999 | Oct 1, 1999 | Conoco Inc. | Lundell #90 | 10,500 | 47937357 |
| 488116 | Oct 1, 1999 | Oct 1, 1999 | Ricochet Energy, Inc. | Alexander #1 | 8,000 | 47937356 |
| 488002 | Sep 28, 1999 | Sep 28, 1999 | Columbus Energy Corp. | Clark-Hereford #6 | 7,100 | 47937355 |
| 488002Amendment | Sep 28, 1999 | Sep 28, 1999 | Columbus Energy Corp. | Clark-Hereford #6 | 7,100 | 47937355 |
| 487883 | Sep 23, 1999 | Sep 23, 1999 | Geonatural Resources, Inc. | Ortiz Ranch #6 | 7,500 | 47937354 |
| 487659 | Sep 23, 1999 | Sep 23, 1999 | Conoco Inc. | Benavides, Rosa V. A3 #77 | 9,700 | 47937344 |
| 487658 | Sep 23, 1999 | Sep 23, 1999 | Conoco Inc. | Rottersman #6 | 10,600 | 47937345 |
| 487736 | Sep 20, 1999 | Sep 20, 1999 | Conoco Inc. | Lechenger #27 | 10,100 | 47937353 |
| 487735 | Sep 20, 1999 | Sep 20, 1999 | Conoco Inc. | Lechenger #71 | 10,100 | 47937352 |
| 487735Amendment | Sep 20, 1999 | Sep 20, 1999 | Conoco Inc. | Lechenger #71 | 10,100 | 47937352 |
| 487734 | Sep 20, 1999 | Sep 20, 1999 | Conoco Inc. | Lechenger #73 | 9,600 | 47937351 |
| 487733 | Sep 20, 1999 | Sep 20, 1999 | Conoco Inc. | Lechenger #74 | 9,900 | 47937350 |
| 487716 | Sep 17, 1999 | Sep 17, 1999 | Enron Oil & Gas Company | Slator Ranch #A 2 | 11,000 | 47937349 |
| 487700 | Sep 17, 1999 | Sep 17, 1999 | Precio Energy, LLC | Kirkpatrick #1 | 1,450 | 47937348 |
| 487699 | Sep 17, 1999 | Sep 17, 1999 | Precio Energy, LLC | Kirkpatrick "A" #2 | 1,800 | 47937347 |
| 487660 | Sep 17, 1999 | Sep 17, 1999 | Conoco Inc. | B.M.T. #113 | 11,200 | 47937346 |
| 487448 | Sep 17, 1999 | Sep 17, 1999 | Killam Oil Co., Ltd. | Bruni Minerals Trust "D" #4 | 11,000 | 47937338 |
| 487631 | Sep 16, 1999 | Sep 16, 1999 | Conoco Inc. | Dix Ranch C #1004 | 8,700 | 47937343 |
| 487631Amendment | Sep 16, 1999 | Sep 16, 1999 | Conoco Inc. | Dix Ranch C100 #4 | 8,700 | 47937343 |
| 487601 | Sep 15, 1999 | Sep 15, 1999 | Conoco Inc. | Vaquillas Ranch L2 #183 | 9,500 | 47937342 |
| 487327 | Sep 15, 1999 | Sep 15, 1999 | Pg&e Texas Pipeline, L.P. | Rectifier PH2-74 #206 | 260 | 47937340 |
| 487324 | Sep 15, 1999 | Sep 15, 1999 | Pg&e Texas Pipeline, L.P. | Rectifier Wlo-2 #204 | 270 | 47937339 |
| 487561 | Sep 14, 1999 | Sep 14, 1999 | Petro-Hunt, L.L.C. | Bruni, A. M. #20 | 11,500 | 47937341 |
| 487559 | Sep 14, 1999 | Sep 14, 1999 | Michael Petroleum Corporation | Hein, Luz A. Estate #12ST | 10,800 | 47937214 |
| 487428 | Sep 10, 1999 | Sep 10, 1999 | High Island Oil Corporation | Palafox Exploration #4039 | 6,900 | 47937337 |
| 487420 | Sep 10, 1999 | Sep 10, 1999 | Kerns O & G, Inc. | Petty Ranch #805 | 5,800 | 47937336 |
| 487375 | Sep 8, 1999 | Sep 8, 1999 | Enron Oil & Gas Company | Slator Ranch #E 1 | 8,000 | 47937335 |
| 487238 | Sep 2, 1999 | Sep 2, 1999 | Dynamic Production, Inc. | Hilltop Farm #1 | 7,500 | 47937334 |
| 487199 | Sep 2, 1999 | Sep 2, 1999 | Michael Petroleum Corporation | Hein, Luz A. #13 | 12,500 | 47937333 |
| 487175 | Sep 1, 1999 | Sep 1, 1999 | Thorp Petroleum Corporation | Benavides #1 | 9,600 | 47937332 |
| 487175Amendment | Sep 1, 1999 | Sep 1, 1999 | Thorp Petroleum Corporation | Benavides, R. V. C #1 | 9,600 | 47937332 |
| 487122 | Aug 31, 1999 | Aug 31, 1999 | Grimes Energy Company | Martin-Volz #1 | 8,000 | 47937331 |
| 487105 | Aug 31, 1999 | Aug 31, 1999 | Samedan Oil Corporation | Dolores #1 | 4,800 | 47937330 |
| 487057 | Aug 27, 1999 | Aug 27, 1999 | Columbus Energy Corp. | Clark, N. H. #16 | 6,900 | 47937329 |
| 487028 | Aug 27, 1999 | Aug 27, 1999 | Conoco Inc. | 7B Cattle Co. E #2 | 13,100 | 47937328 |
| 487028Amendment | Aug 27, 1999 | Aug 27, 1999 | Conoco Inc. | 7B Cattle Co. E #2 | 13,100 | 47937328 |
| 486824 | Aug 26, 1999 | Aug 26, 1999 | Killam Oil Co., Ltd. | Bruni Minerals C/a-NCT G.U. #15 | 11,100 | 47937326 |
| 486824Amendment | Aug 26, 1999 | Aug 26, 1999 | Killam Oil Co., Ltd. | Bruni Minerals C/a-NCT G.U. #15 | 11,100 | 47937326 |
| 486884 | Aug 23, 1999 | Aug 23, 1999 | High Island Oil Corporation | Palafox Exploration #4042 | 6,900 | 47937327 |
| 486843 | Aug 20, 1999 | Aug 20, 1999 | Chevron U. S. A. Inc. | Bruni Mineral Trust North TR "A" #5 | 9,500 | 47937325 |
| 486613 | Aug 12, 1999 | Aug 12, 1999 | High Island Oil Corporation | Palafox Exploration #3039 | 3,800 | 47937324 |
| 486613Amendment | Aug 12, 1999 | Aug 12, 1999 | High Island Oil Corporation | Palafox Exploration #3039 | 6,900 | 47937324 |
| 455044Amendment | Aug 12, 1999 | Aug 12, 1999 | Cordele Development Corporation | Vastar Resources Mineral Fee #2 | 8,800 | 47936588 |
| 486586 | Aug 11, 1999 | Aug 11, 1999 | Conoco Inc. | Vaquillas Ranch Co Ltd. #58 | 10,000 | 47937323 |
| 486555 | Aug 10, 1999 | Aug 10, 1999 | Ricochet Energy, Inc. | Cantu "A" #2 | 7,000 | 47937322 |
| 486532 | Aug 10, 1999 | Aug 10, 1999 | Dynamic Production, Inc. | McNary-Ramsay #2 | 7,300 | 47937321 |
| 486479 | Aug 10, 1999 | Aug 10, 1999 | Killam Oil Co., Ltd. | Benavides, Alma 29 #1 | 8,000 | 47937318 |
| 486502 | Aug 9, 1999 | Aug 9, 1999 | Conoco Inc. | Hubberd #34 | 10,500 | 47937320 |
| 486502Amendment | Aug 9, 1999 | Aug 9, 1999 | Conoco Inc. | Hubberd #34 | 10,500 | 47937320 |
| 486501 | Aug 9, 1999 | Aug 9, 1999 | Conoco Inc. | Lundell #89 | 10,500 | 47937319 |
| 486380 | Aug 9, 1999 | Aug 9, 1999 | Killam Oil Co., Ltd. | Bruni Minerals Trust "a" Gas Ut. #1 | 10,250 | 47937315 |
| 486493 | Aug 6, 1999 | Aug 6, 1999 | Thorp Petroleum Corporation | Laurel, Angel #1 | 10,000 | 47937317 |
| 486491 | Aug 6, 1999 | Aug 6, 1999 | Teal Energy USA, Inc. | Kathleen Marie #1 | 9,000 | 47937316 |