| 461890 | May 2, 1997 | May 2, 1997 | Transtexas Gas Corporation | Hubberd #19 | 10,200 | 47936683 |
| 461890Amendment | May 2, 1997 | May 2, 1997 | Conoco Inc. | Hubberd #19 | 10,200 | 47936683 |
| 461583 | May 1, 1997 | May 1, 1997 | Columbus Energy Corp. | BMT #9 | 7,700 | 47936678 |
| 461802 | Apr 30, 1997 | Apr 30, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #155 | 10,500 | 47936682 |
| 461802Amendment | Apr 30, 1997 | Apr 30, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #155 | 10,500 | 47936682 |
| 461802Amendment | Apr 30, 1997 | Apr 30, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #155 | 10,500 | 47936682 |
| 461800 | Apr 30, 1997 | Apr 30, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #153 | 10,500 | 47936681 |
| 461800Amendment | Apr 30, 1997 | Apr 30, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #153 | 10,500 | 47936681 |
| 461800Amendment | Apr 30, 1997 | Apr 30, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #153 | 10,500 | 47936681 |
| 461695 | Apr 28, 1997 | Apr 28, 1997 | Michael Petroleum Corporation | Bruni-Summers #7 | 10,500 | 47936680 |
| 461598 | Apr 25, 1997 | Apr 25, 1997 | Transtexas Gas Corporation | McKendrick, W. H. #22 | 7,500 | 47936679 |
| 461403 | Apr 24, 1997 | Apr 24, 1997 | Conoco Inc. | Vergara, G. B. #13 | 11,600 | 47936676 |
| 461403Amendment | Apr 24, 1997 | Apr 24, 1997 | Conoco Inc. | Vergara, G. B. #13 | 11,600 | 47936676 |
| 461486 | Apr 22, 1997 | Apr 22, 1997 | Enron Oil & Gas Company | Briscoe "N" 2046 #2 | 9,800 | 47936677 |
| 461217 | Apr 22, 1997 | Apr 22, 1997 | Conoco Inc. | Benavides, Rosa V. B4 #66 | 9,600 | 47936675 |
| 461211 | Apr 22, 1997 | Apr 22, 1997 | Columbus Energy Corp. | B.M.T. #10 | 7,900 | 47936674 |
| 461232 | Apr 16, 1997 | Apr 16, 1997 | Enron Oil & Gas Company | Briscoe N #1 | 11,020 | 47936673 |
| 461232Amendment | Apr 16, 1997 | Apr 16, 1997 | EOG Resources, Inc. | Briscoe N #1 | 11,020 | 47936673 |
| 461196 | Apr 16, 1997 | Apr 16, 1997 | Union Pacific Resources Company | Dcrc Section 101F #6 | 4,322 | 47936332 |
| 461141 | Apr 15, 1997 | Apr 15, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #150 | 10,000 | 47936672 |
| 460978 | Apr 15, 1997 | Apr 15, 1997 | Conoco Inc. | Vaquillas Ranch H #96 | 12,250 | 47935473 |
| 460911 | Apr 11, 1997 | Apr 11, 1997 | Conoco Inc. | Vaquillas Ranch A4 #121 | 12,223 | 47936004 |
| 460854 | Apr 9, 1997 | Apr 9, 1997 | Killam Oil Co., Ltd. | K & H Fee "1690" #3 | 10,000 | 47936671 |
| 460854Amendment | Apr 9, 1997 | Apr 9, 1997 | Killam Oil Co., Ltd. | Killam & Hurd "1690" #3 | 10,000 | 47936671 |
| 460811 | Apr 7, 1997 | Apr 7, 1997 | Michael Petroleum Corporation | Martin, J. C. III #14 | 8,750 | 47936119 |
| 460754 | Apr 4, 1997 | Apr 4, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #147 | 10,000 | 47936668 |
| 460753 | Apr 4, 1997 | Apr 4, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #148 | 10,000 | 47936669 |
| 460752 | Apr 4, 1997 | Apr 4, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #152 | 10,000 | 47936670 |
| 460752Amendment | Apr 4, 1997 | Apr 4, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #152 | 10,000 | 47936670 |
| 460752Amendment | Apr 4, 1997 | Apr 4, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #152 | 10,000 | 47936670 |
| 460669 | Apr 3, 1997 | Apr 3, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #149 | 10,000 | 47936667 |
| 460651 | Apr 3, 1997 | Apr 3, 1997 | Chevron U. S. A. Inc. | Macmahon, P. A. #10 | 7,500 | 47936666 |
| 460651Amendment | Apr 3, 1997 | Apr 3, 1997 | Chevron U. S. A. Inc. | Macmahon, P. A. #10 | 6,747 | 47936666 |
| 460648 | Apr 3, 1997 | Apr 3, 1997 | Chevron U. S. A. Inc. | Chevron - Edith Carr #5 | 10,500 | 47936665 |
| 460645 | Apr 3, 1997 | Apr 3, 1997 | Chevron U. S. A. Inc. | Macmahon, P. A. #7ST | 7,500 | 47935775 |
| 460512 | Apr 2, 1997 | Apr 2, 1997 | Sonat Exploration Co. - Houston | Vaquillas Ranch 1631 #3 | 10,000 | 47936664 |
| 460420 | Mar 27, 1997 | Mar 27, 1997 | Enron Oil & Gas Company | Pena, H. L. #1 | 7,704 | 47935752 |
| 460414 | Mar 27, 1997 | Mar 27, 1997 | Columbus Energy Corp. | Martinez, D.S. #5 | 7,900 | 47936663 |
| 460368 | Mar 26, 1997 | Mar 26, 1997 | Conoco Inc. | Carr, Edith J. #6 | 9,700 | 47936662 |
| 460218 | Mar 21, 1997 | Mar 21, 1997 | Michael Petroleum Corporation | Martin, Sophie J. #9 | 10,500 | 47936661 |
| 460218Amendment | Mar 21, 1997 | Mar 21, 1997 | Michael Petroleum Corporation | Martin, Sophie J. #9 | 10,500 | 47936661 |
| 460217 | Mar 21, 1997 | Mar 21, 1997 | Michael Petroleum Corporation | Martin, J. C. III #15 | 10,500 | 47936660 |
| 460108 | Mar 20, 1997 | Mar 20, 1997 | Michael Petroleum Corporation | Bruni, Lilia #6 | 10,000 | 47936659 |
| 457289 | Mar 18, 1997 | Mar 18, 1997 | Samson Lone Star LP | Zimmerman #1 | 10,600 | 47936210 |
| 459832 | Mar 12, 1997 | Mar 12, 1997 | Conoco Inc. | Vaquillas Ranch Ltd #50 | 10,100 | 47936658 |
| 459831 | Mar 12, 1997 | Mar 12, 1997 | Conoco Inc. | Vaquillas Ranch Ltd #51 | 10,600 | 47936657 |
| 459628 | Mar 12, 1997 | Mar 12, 1997 | Conoco Inc. | Vaquillas Ranch G #34 | 12,490 | 47933582 |
| 459643 | Mar 11, 1997 | Mar 11, 1997 | Marquee Corporation | Lopez, Alonzo #1 | 8,702 | 47933460 |
| 459621 | Mar 10, 1997 | Mar 10, 1997 | Transtexas Gas Corporation | Hubberd "F" #1 | 9,800 | 47936656 |
| 459621Amendment | Mar 10, 1997 | Mar 10, 1997 | Transtexas Gas Corporation | Hubberd "F" #1 | 9,800 | 47936656 |
| 459551 | Mar 7, 1997 | Mar 7, 1997 | Columbus Energy Corp. | Prevost #5 | 7,600 | 47936655 |
| 459551Amendment | Mar 7, 1997 | Mar 7, 1997 | Columbus Energy Corp. | Prevost #5 | 7,825 | 47936655 |
| 459470 | Mar 7, 1997 | Mar 7, 1997 | Killam Oil Co., Ltd. | Range-Rodriguez Gas Unit #1 | 9,000 | 47936653 |
| 459470Amendment | Mar 7, 1997 | Mar 7, 1997 | Killam Oil Co., Ltd. | Rodriguez - Range Gas Unit #1 | 9,000 | 47936653 |
| 459470Amendment | Mar 7, 1997 | Mar 7, 1997 | Killam Oil Co., Ltd. | Rodriguez - Range Gas Unit #1 | 9,000 | 47936653 |
| 459442 | Mar 7, 1997 | Mar 7, 1997 | Union Pacific Resources Company | D.C.R.C. 101B #20 | 5,500 | 47936654 |
| 459376 | Mar 6, 1997 | Mar 6, 1997 | Killam Oil Co., Ltd. | Bruni-Killam "2184" #1 | 11,000 | 47936651 |
| 459339 | Mar 6, 1997 | Mar 6, 1997 | Conoco Inc. | Roseberry, D. L. #1 | 11,100 | 47933773 |
| 459447 | Mar 5, 1997 | Mar 5, 1997 | Chevron U. S. A. Inc. | Chevron - Carr, Edith #4 | 10,700 | 47936652 |
| 459292 | Feb 28, 1997 | Feb 28, 1997 | Michael Petroleum Corporation | S. J. Martin GU #A 6 | 11,000 | 47936650 |
| 459292Amendment | Feb 28, 1997 | Feb 28, 1997 | Michael Petroleum Corporation | S.J. Martin GU #A 6 | 11,000 | 47936650 |
| 459172 | Feb 26, 1997 | Feb 26, 1997 | Transtexas Gas Corporation | Benavides, R.V. "C" #1 | 12,000 | 47936649 |
| 459172Amendment | Feb 26, 1997 | Feb 26, 1997 | Transtexas Gas Corporation | Benavides, Rosa V. "C" #1 | 12,000 | 47936649 |
| 459172Amendment | Feb 26, 1997 | Feb 26, 1997 | Transtexas Gas Corporation | Benavides, Rosa V. "C" #1 | 12,000 | 47936649 |
| 457779 | Feb 26, 1997 | Feb 26, 1997 | Sonat Exploration Co. - Houston | Vaquillas Ranch 1631 A #6 | 10,000 | 47936448 |
| 459150 | Feb 25, 1997 | Feb 25, 1997 | Enron Oil & Gas Company | Briscoe-Olmitos GU #1A | 10,800 | 47936648 |
| 459093 | Feb 25, 1997 | Feb 25, 1997 | Union Pacific Resources Company | Dcrc 3B #36 | 5,500 | 47936647 |
| 458908 | Feb 24, 1997 | Feb 24, 1997 | Union Pacific Resources Company | Dcrc 101F #19 | 3,000 | 47936646 |
| 458908Amendment | Feb 24, 1997 | Feb 24, 1997 | Union Pacific Resources Company | Dcrc 101F #19 | 3,000 | 47936646 |
| 458597 | Feb 18, 1997 | Feb 18, 1997 | Sonat Exploration Co. - Houston | Vaquillas Ranch 1645 #3 | 10,000 | 47936645 |
| 458263 | Feb 18, 1997 | Feb 18, 1997 | Union Pacific Resources Company | Chimichanga #1H | 12,500 | 47936641 |
| 458441 | Feb 13, 1997 | Feb 13, 1997 | Columbus Energy Corp. | Prevost #7 | 7,500 | 47936642 |
| 458441Amendment | Feb 13, 1997 | Feb 13, 1997 | Columbus Energy Corp. | Prevost #7 | 7,716 | 47936642 |
| 458489 | Feb 10, 1997 | Feb 10, 1997 | Chevron U. S. A. Inc. | Villareal #1 | 9,700 | 47936644 |
| 458488 | Feb 10, 1997 | Feb 10, 1997 | Chevron U. S. A. Inc. | Pena-Rodriquez 'A' #1 | 8,000 | 47936643 |
| 458280 | Feb 6, 1997 | Feb 6, 1997 | Lewis Petro Properties, Inc. | Webb County School Land #6 | 5,400 | 47930855 |
| 458235 | Feb 6, 1997 | Feb 6, 1997 | Union Pacific Resources Company | D.C.R.C. 3C #42 | 2,800 | 47936640 |
| 458247 | Feb 5, 1997 | Feb 5, 1997 | Lewis Petro Properties, Inc. | Laurel, F. D. # 1390 #6A | 6,600 | 47936639 |
| 458222 | Feb 5, 1997 | Feb 5, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #146 | 9,500 | 47936638 |
| 458181 | Feb 5, 1997 | Feb 5, 1997 | Union Pacific Resources Company | D.C.R.C. 100B #4 | 2,000 | 47936637 |
| 458180 | Feb 5, 1997 | Feb 5, 1997 | Union Pacific Resources Company | D.C.R.C. 100B #3 | 6,500 | 47936636 |
| 458179 | Feb 5, 1997 | Feb 5, 1997 | Union Pacific Resources Company | D.C.R.C. 100B #5 | 1,800 | 47936635 |
| 457964 | Jan 30, 1997 | Jan 30, 1997 | Killam Oil Co., Ltd. | Killam & Hurd Fee "1690" #2 | 10,000 | 47936634 |
| 457843 | Jan 29, 1997 | Jan 29, 1997 | Sonat Exploration Co. - Houston | Vaquillas Ranch 136A #4 | 10,500 | 47936633 |
| 457843Amendment | Jan 29, 1997 | Jan 29, 1997 | Sonat Exploration Co. - Houston | Vaquillas Ranch 136A #4 | 10,500 | 47936633 |
| 457755 | Jan 23, 1997 | Jan 23, 1997 | Conoco Inc. | Hirsch Estate 1771 #5 | 9,200 | 47936632 |
| 457737 | Jan 23, 1997 | Jan 23, 1997 | Chevron U. S. A. Inc. | Chevron - Edith Carr #3 | 10,600 | 47936631 |
| 457659 | Jan 23, 1997 | Jan 23, 1997 | Killam Oil Co., Ltd. | K & H Fee "573" #3 | 9,000 | 47936629 |
| 456613 | Jan 23, 1997 | Jan 23, 1997 | Conoco Inc. | Vaquillas Ranch A-1 #145 | 11,300 | 47936605 |
| 457697 | Jan 22, 1997 | Jan 22, 1997 | Transtexas Gas Corporation | B.M.T. #55 | 11,600 | 47936630 |
| 457697Amendment | Jan 22, 1997 | Jan 22, 1997 | Conocophillips Company | B.M.T. #55 | 11,600 | 47936630 |
| 457478 | Jan 22, 1997 | Jan 22, 1997 | Union Pacific Resources Company | D.C.R.C. 3B #34 | 3,000 | 47936618 |
| 457565 | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #143 | 9,500 | 47936627 |
| 457565Amendment | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #143 | 9,500 | 47936627 |
| 457565Amendment | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #143 | 9,500 | 47936627 |
| 457564 | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #145 | 9,500 | 47936626 |
| 457564Amendment | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #145 | 9,500 | 47936626 |
| 457564Amendment | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #145 | 10,500 | 47936626 |
| 457564Amendment | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #145 | 10,500 | 47936626 |
| 457563 | Jan 21, 1997 | Jan 21, 1997 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #144 | 9,500 | 47936628 |