| 461957 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #821 | 7,000 | 13537422 |
| 461957Amendment | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #821 | 7,000 | 13537422 |
| 461956 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #822 | 7,000 | 13537421 |
| 461955 | May 13, 1997 | May 13, 1997 | Anadarko Petroleum Corp. | TXL North Unit #820 | 7,000 | 13537420 |
| 461769 | May 9, 1997 | May 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #246 | 7,000 | 13537409 |
| 461768 | May 9, 1997 | May 9, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #245 | 7,000 | 13537408 |
| 461993 | May 8, 1997 | May 8, 1997 | Phillips Petroleum Company | Frank A #2 | 4,400 | 13503125 |
| 461904 | May 7, 1997 | May 7, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #5007 | 6,100 | 13537419 |
| 460783 | May 7, 1997 | May 7, 1997 | McClure Oil Company, Inc. | York #1 | 4,000 | 13537407 |
| 459828 | May 7, 1997 | May 7, 1997 | Cleveland Oil Company,l.l.c.,the | TXL E #2 | 9,800 | 13505418 |
| 461882 | May 1, 1997 | May 1, 1997 | Enron Oil & Gas Company | Holt #1210 | 12,972 | 13537252 |
| 461510 | Apr 23, 1997 | Apr 23, 1997 | Phillips Petroleum Company | Fortune 500 #1 | 8,900 | 13536522 |
| 461221 | Apr 22, 1997 | Apr 22, 1997 | Phillips Petroleum Company | Goldsmith Andector Unit #V 15 | 6,000 | 13508794 |
| 461221Amendment | Apr 22, 1997 | Apr 22, 1997 | Phillips Petroleum Company | Embar #42M | 5,200 | 13508794 |
| 459330 | Apr 17, 1997 | Apr 17, 1997 | Amoco Production Company | South Foster Unit #199 | 4,500 | 13535042 |
| 461046 | Apr 14, 1997 | Apr 14, 1997 | Chevron U. S. A. Inc. | Goldsmith San Andres Unit #286 | 4,300 | 13500696 |
| 460957 | Apr 14, 1997 | Apr 14, 1997 | Enron Oil & Gas Company | Holt, Bobby #1001 | 13,500 | 13537373 |
| 460701 | Apr 4, 1997 | Apr 4, 1997 | OXY USA Inc. | Slator, Paul 38 #1 | 11,000 | 13537406 |
| 460501 | Apr 3, 1997 | Apr 3, 1997 | Enron Oil & Gas Company | Holt, Bobby #1102 | 10,000 | 13537404 |
| 460502 | Apr 2, 1997 | Apr 2, 1997 | Enron Oil & Gas Company | Holt, Bobby #1602 | 10,000 | 13537405 |
| 460502Amendment | Apr 2, 1997 | Apr 2, 1997 | Enron Oil & Gas Company | Holt, Bobby #1602 | 9,760 | 13537405 |
| 460307 | Mar 25, 1997 | Mar 25, 1997 | OXY USA Inc. | Harper Devonian Unit #708 | 10,506 | 13520325 |
| 460240 | Mar 21, 1997 | Mar 21, 1997 | Seaboard Oil Company | Parker T #2 | 5,800 | 13537403 |
| 459892 | Mar 18, 1997 | Mar 18, 1997 | Rexene Corporation | Odessa Petrochemical #970 | 400 | 13537402 |
| 459891 | Mar 18, 1997 | Mar 18, 1997 | Rexene Corporation | Odessa Petrochemical #971 | 400 | 13537401 |
| 459734 | Mar 18, 1997 | Mar 18, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #239 | 6,500 | 13537396 |
| 459734Amendment | Mar 18, 1997 | Mar 18, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #239 | 7,000 | 13537396 |
| 459733 | Mar 18, 1997 | Mar 18, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #238 | 6,500 | 13537397 |
| 459733Amendment | Mar 18, 1997 | Mar 18, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #238 | 7,000 | 13537397 |
| 459732 | Mar 18, 1997 | Mar 18, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #237 | 6,500 | 13537398 |
| 459732Amendment | Mar 18, 1997 | Mar 18, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #237 | 7,000 | 13537398 |
| 459779 | Mar 14, 1997 | Mar 14, 1997 | Chevron U. S. A. Inc. | Goldsmith San Andres Unit #1106 | 5,850 | 13520097 |
| 459778 | Mar 14, 1997 | Mar 14, 1997 | Chevron U. S. A. Inc. | Goldsmith San Andres Unit #1105 | 5,850 | 13520096 |
| 459737 | Mar 14, 1997 | Mar 14, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #242 | 6,500 | 13537393 |
| 459737Amendment | Mar 14, 1997 | Mar 14, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #242 | 7,000 | 13537393 |
| 459736 | Mar 14, 1997 | Mar 14, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #241 | 6,500 | 13537394 |
| 459736Amendment | Mar 14, 1997 | Mar 14, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #241 | 7,000 | 13537394 |
| 459735 | Mar 14, 1997 | Mar 14, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #240 | 6,500 | 13537395 |
| 459735Amendment | Mar 14, 1997 | Mar 14, 1997 | Anadarko Petroleum Corp. | Goldsmith Cummins Deep Unit #240 | 7,000 | 13537395 |
| 459870 | Mar 13, 1997 | Mar 13, 1997 | Costilla Energy, Inc. | Kelly "C" #4201 | 10,800 | 13537400 |
| 459793 | Mar 12, 1997 | Mar 12, 1997 | Duncan Oil Properties, Inc. | Stariad #1 | 4,750 | 13537399 |
| 459565 | Mar 11, 1997 | Mar 11, 1997 | Texaco E & P Inc. | Holt, O. B. #62 | 13,130 | 13510686 |
| 459565Amendment | Mar 11, 1997 | Mar 11, 1997 | Texaco E & P Inc. | Holt, O. B. #62 | 13,130 | 13510686 |
| 459469 | Mar 10, 1997 | Mar 10, 1997 | Baxter, D. B. Inc. | Pinnacle #1 | 14,000 | 13537392 |
| 459341 | Mar 3, 1997 | Mar 3, 1997 | Costilla Energy, Inc. | Ward "D" #3401 | 10,800 | 13537391 |
| 459243 | Mar 3, 1997 | Mar 3, 1997 | Anadarko Petroleum Corp. | Slator -C- #2 | 9,762 | 13504583 |
| 459055 | Feb 28, 1997 | Feb 28, 1997 | Texaco E & P Inc. | Holt, O. B. #63 | 9,140 | 13521179 |
| 459055Amendment | Feb 28, 1997 | Feb 28, 1997 | Texaco E & P Inc. | Holt, O. B. #63 | 9,140 | 13521179 |
| 459199 | Feb 26, 1997 | Feb 26, 1997 | Anadarko Petroleum Corp. | TXL 'L' #1 | 5,500 | 13537390 |
| 459198 | Feb 26, 1997 | Feb 26, 1997 | Anadarko Petroleum Corp. | TXL 'Q' #1 | 5,500 | 13537389 |
| 459011 | Feb 26, 1997 | Feb 26, 1997 | Texaco E & P Inc. | Holt, O. B. '11' #1 | 13,200 | 13537387 |
| 458993 | Feb 26, 1997 | Feb 26, 1997 | Walsh & Watts, Inc. | Moss #22 | 4,500 | 13537388 |
| 459043 | Feb 24, 1997 | Feb 24, 1997 | Anadarko Petroleum Corp. | TXL North Unit #802 | 6,700 | 13537386 |
| 459042 | Feb 24, 1997 | Feb 24, 1997 | Anadarko Petroleum Corp. | TXL North Unit #801 | 6,700 | 13537385 |
| 459041 | Feb 24, 1997 | Feb 24, 1997 | Anadarko Petroleum Corp. | TXL North Unit #800 | 6,700 | 13537384 |
| 459041Amendment | Feb 24, 1997 | Feb 24, 1997 | Anadarko Petroleum Corp. | TXL North Unit #800 | 7,000 | 13537384 |
| 458815 | Feb 18, 1997 | Feb 18, 1997 | OXY USA Inc. | TXL #1 | 7,870 | 13505960 |
| 458470 | Feb 13, 1997 | Feb 13, 1997 | McClure Oil Company, Inc. | Rhodes #1 | 4,000 | 13537381 |
| 455808 | Feb 13, 1997 | Feb 13, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #4805 | 6,100 | 13537382 |
| 455807 | Feb 13, 1997 | Feb 13, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #4908 | 6,100 | 13537383 |
| 457789 | Jan 29, 1997 | Jan 29, 1997 | Texaco E & P Inc. | Holt, O.B. #122 | 4,775 | 13536243 |
| 457923 | Jan 28, 1997 | Jan 28, 1997 | Titan Resources I, Inc. | North Foster Unit #89 | 9,000 | 13531268 |
| 457607 | Jan 28, 1997 | Jan 28, 1997 | Arrington,david H. Oil & Gas,inc | Holt, O. B. Sr., et al /NCT-C/ #3 | 4,475 | 13508573 |
| 455815 | Jan 27, 1997 | Jan 27, 1997 | GRB Properties, Inc. | Jordan San Andres Unit #7919 | 5,000 | 13533267 |
| 457694 | Jan 22, 1997 | Jan 22, 1997 | Arco Permian | Cowden #1401 | 13,000 | 13537380 |
| 457635 | Jan 21, 1997 | Jan 21, 1997 | Titan Resources I, Inc. | North-Foster Unit #22A | 4,300 | 13537379 |
| 457635Amendment | Jan 21, 1997 | Jan 21, 1997 | Titan Resources I, Inc. | North-Foster Unit #22A | 4,450 | 13537379 |
| 457391 | Jan 17, 1997 | Jan 17, 1997 | Anadarko Petroleum Corp. | Cummins, H.E. -A- #2 | 6,250 | 13500048 |
| 457391Amendment | Jan 17, 1997 | Jan 17, 1997 | Anadarko Petroleum Corp. | Cummins, H. E. -A- #2 | 6,276 | 13500048 |
| 457081 | Jan 7, 1997 | Jan 7, 1997 | Texaco E & P Inc. | Ector "BI" Fee #1 | 10,000 | 13537378 |
| 457073 | Jan 7, 1997 | Jan 7, 1997 | Marathon Oil Company | Rigel #1 | 10,450 | 13536949 |
| 457073Amendment | Jan 7, 1997 | Jan 7, 1997 | Marathon Oil Company | Rigel #1 | 10,450 | 13536949 |
| 456976 | Jan 7, 1997 | Jan 7, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #3408 | 6,100 | 13537376 |
| 456975 | Jan 7, 1997 | Jan 7, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #2205 | 6,100 | 13537375 |
| 456974 | Jan 7, 1997 | Jan 7, 1997 | National Energy Group, Inc. | Goldsmith Adobe Unit #3309 | 6,100 | 13537377 |
| 456491 | Jan 6, 1997 | Jan 6, 1997 | Phillips Petroleum Company | Frank-A #5 | 7,660 | 13503128 |
| 456967 | Jan 3, 1997 | Jan 3, 1997 | Titan Resources I, Inc. | North Foster Unit #155 | 4,200 | 13537374 |
| 456961 | Jan 3, 1997 | Jan 3, 1997 | Enron Oil & Gas Company | Holt, Bobby #1001 | 13,500 | 13537373 |
| 455496 | Dec 30, 1996 | Dec 30, 1996 | Anadarko Petroleum Corp. | TXL -E- #9 | 8,648 | 13505978 |
| 456719 | Dec 27, 1996 | Dec 27, 1996 | Titan Resources I, Inc. | J.L. Johnson, Jr Unit/EO #57 | 5,500 | 13537372 |
| 456599 | Dec 20, 1996 | Dec 20, 1996 | Titan Resources I, Inc. | J.L. Johnson, Jr. Unit/EO #56 | 4,300 | 13537371 |
| 456278 | Dec 17, 1996 | Dec 17, 1996 | Anadarko Petroleum Corp. | Cummins, H.E. -J- #1 | 5,766 | 13500052 |
| 456278Amendment | Dec 17, 1996 | Dec 17, 1996 | Anadarko Petroleum Corp. | Cummins, H.E. -J- #1 | 5,766 | 13500052 |
| 456277 | Dec 17, 1996 | Dec 17, 1996 | Anadarko Petroleum Corp. | Cummins, H.E. -J- #2 | 5,777 | 13500053 |
| 456357 | Dec 16, 1996 | Dec 16, 1996 | Lario Oil & Gas Company | Wallace "C" #3Q | 4,100 | 13537370 |
| 456158 | Dec 13, 1996 | Dec 13, 1996 | National Energy Group, Inc. | Goldsmith Adobe Unit #3811 | 6,100 | 13537368 |
| 456157 | Dec 13, 1996 | Dec 13, 1996 | National Energy Group, Inc. | Goldsmith Adobe Unit #3409 | 6,100 | 13537367 |
| 456156 | Dec 13, 1996 | Dec 13, 1996 | National Energy Group, Inc. | Goldsmith Adobe Unit #3407 | 6,100 | 13537366 |
| 456155 | Dec 13, 1996 | Dec 13, 1996 | National Energy Group, Inc. | Goldsmith Adobe Unit #3915 | 6,100 | 13537369 |
| 453220 | Dec 13, 1996 | Dec 13, 1996 | B & B Production Co | Ector -AM- Fee #1 | 4,300 | 13510338 |
| 455944 | Dec 11, 1996 | Dec 11, 1996 | Texaco E & P Inc. | Holt, O. B. #59 | 4,514 | 13501810 |
| 455038 | Dec 10, 1996 | Dec 10, 1996 | Texaco E & P Inc. | Connell, W.E., NCT-2 #143 | 9,050 | 13501375 |
| 455038Amendment | Dec 10, 1996 | Dec 10, 1996 | Texaco E & P Inc. | Connell, W.E., NCT-2 #143 | 9,050 | 13501375 |
| 456030 | Dec 9, 1996 | Dec 9, 1996 | Enron Oil & Gas Company | Holt, Bobby #1101 | 10,500 | 13537237 |
| 455960 | Dec 9, 1996 | Dec 9, 1996 | Phillips Petroleum Company | Eidson "B" #1 | 4,400 | 13503015 |
| 455346 | Dec 2, 1996 | Dec 2, 1996 | Lion Production, Inc. | Mobil-Millard Eidson #1Q | 3,590 | 13530041 |
| 454765 | Dec 2, 1996 | Dec 2, 1996 | Trey Services, Inc. | Holt, O.B. Sr. et Al #2 | 4,300 | 13508574 |
| 455541 | Nov 25, 1996 | Nov 25, 1996 | Chevron U. S. A. Inc. | Goldsmith, C. A. et Al #1395E | 3,800 | 13534333 |
| 455541Amendment | Nov 25, 1996 | Nov 25, 1996 | Chevron U. S. A. Inc. | Goldsmith, C. A. et Al #1395G | 3,800 | 13534333 |
| 455330 | Nov 25, 1996 | Nov 25, 1996 | Anadarko Petroleum Corp. | TXL South Unit #6001 | 6,550 | 13508338 |