| 399438Amendment | May 21, 1992 | May 21, 1992 | Conoco Inc. | Vaquillas Ranch Co. Ltd #42 | 10,600 | 47935475 |
| 399436 | May 21, 1992 | May 21, 1992 | Conoco Inc. | Vaqillas Ranch - H #96 | 12,800 | 47935473 |
| 399428 | May 21, 1992 | May 21, 1992 | Michael Petroleum Corporation | Martin, Sophie J. #7 | 9,500 | 47934995 |
| 399491 | May 20, 1992 | May 20, 1992 | Enron Oil & Gas Company | Dix Ranch - State A #1536 | 10,000 | 47935476 |
| 399344 | May 15, 1992 | May 15, 1992 | Enron Oil & Gas Company | Dix Ranch A #3 | 9,050 | 47935471 |
| 399263 | May 13, 1992 | May 13, 1992 | Michael Petroleum Corporation | Martin, J. C. III "A" #4 | 10,000 | 47935470 |
| 398987 | May 11, 1992 | May 11, 1992 | Graham Royalty, Ltd. | Lundell Ranch #1 | 11,674 | 47933536 |
| 398939 | May 11, 1992 | May 11, 1992 | Conoco Inc. | Vaquillas Ranch A #94 | 12,600 | 47935462 |
| 398939Amendment | May 11, 1992 | May 11, 1992 | Conoco Inc. | Vaquillas Ranch A #94 | 13,800 | 47935462 |
| 399093 | May 8, 1992 | May 8, 1992 | Transamerican Natural Gas Corp. | Lundell #64 | 10,200 | 47935467 |
| 399092 | May 8, 1992 | May 8, 1992 | Transamerican Natural Gas Corp. | Lundell "C" #3 | 10,200 | 47935466 |
| 399092Amendment | May 8, 1992 | May 8, 1992 | Transamerican Natural Gas Corp. | Lundell "C" #3 | 10,800 | 47935466 |
| 399055 | May 7, 1992 | May 7, 1992 | Transamerican Natural Gas Corp. | Vaquillas "D" #1 | 9,500 | 47935465 |
| 399054 | May 7, 1992 | May 7, 1992 | Transamerican Natural Gas Corp. | Carr #58 | 9,700 | 47935464 |
| 399042 | May 6, 1992 | May 6, 1992 | Enron Oil & Gas Company | Bruni Mineral a NCT #15 | 12,000 | 47935463 |
| 398915 | May 1, 1992 | May 1, 1992 | Enron Oil & Gas Company | Vaquillas Ranch 1184 #2 | 10,450 | 47935458 |
| 398914 | May 1, 1992 | May 1, 1992 | Enron Oil & Gas Company | Vaquillas Ranch 2059 #2 | 10,400 | 47935457 |
| 398701 | Apr 29, 1992 | Apr 29, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #70 | 9,300 | 47935455 |
| 398700 | Apr 29, 1992 | Apr 29, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #71 | 8,350 | 47935453 |
| 398699 | Apr 29, 1992 | Apr 29, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #72 | 8,050 | 47935454 |
| 398656 | Apr 29, 1992 | Apr 29, 1992 | Chevron U. S. A. Inc. | Moreno, Isidro et Al #6 | 9,000 | 47935451 |
| 398655 | Apr 29, 1992 | Apr 29, 1992 | Chevron U. S. A. Inc. | Moreno, Isidro et Al #8 | 9,000 | 47935452 |
| 398740 | Apr 27, 1992 | Apr 27, 1992 | Transamerican Natural Gas Corp. | Hubberd, William "C" #3 | 9,500 | 47935456 |
| 398740Amendment | Apr 27, 1992 | Apr 27, 1992 | Transamerican Natural Gas Corp. | Hubberd, William "C" #3 | 9,500 | 47935456 |
| 398740Amendment | Apr 27, 1992 | Apr 27, 1992 | Transamerican Natural Gas Corp. | Hubberd, William "C" #3 | 9,500 | 47935456 |
| 398740Amendment | Apr 27, 1992 | Apr 27, 1992 | Houston Exploration Company, The | Hubberd, Wm. "C1" #3 | 9,500 | 47935456 |
| 398641 | Apr 22, 1992 | Apr 22, 1992 | Enron Oil & Gas Company | Hubberd-Saldivar Gas Unit #1 | 11,200 | 47935450 |
| 398641Amendment | Apr 22, 1992 | Apr 22, 1992 | Enron Oil & Gas Company | Hubberd-Saldivar Gas Unit #1 | 11,200 | 47935450 |
| 398639 | Apr 22, 1992 | Apr 22, 1992 | TDC Engineering, Inc. | Adami #1 | 1,400 | 47935449 |
| 398638 | Apr 22, 1992 | Apr 22, 1992 | TDC Engineering, Inc. | Adami #2 | 1,400 | 47935448 |
| 398637 | Apr 22, 1992 | Apr 22, 1992 | TDC Engineering, Inc. | Garcia Unit #1 | 1,400 | 47935447 |
| 422577 | Apr 19, 1992 | Apr 19, 1992 | Columbus Energy Corp. | Chamberlain-Gongora #3 | 7,200 | 47936066 |
| 398489 | Apr 17, 1992 | Apr 17, 1992 | Transamerican Natural Gas Corp. | Day #4 | 9,100 | 47935446 |
| 398489Amendment | Apr 17, 1992 | Apr 17, 1992 | Transamerican Natural Gas Corp. | Day #4 | 9,100 | 47935446 |
| 398489Amendment | Apr 17, 1992 | Apr 17, 1992 | Transamerican Natural Gas Corp. | Day #4 | 9,100 | 47935446 |
| 398420 | Apr 17, 1992 | Apr 17, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #35 | 8,600 | 47935099 |
| 398375 | Apr 17, 1992 | Apr 17, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #42 | 8,550 | 47935184 |
| 398375Amendment | Apr 17, 1992 | Apr 17, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #42 | 8,550 | 47935184 |
| 398332 | Apr 16, 1992 | Apr 16, 1992 | Transamerican Natural Gas Corp. | Lechenger #15 | 9,100 | 47935444 |
| 398437 | Apr 15, 1992 | Apr 15, 1992 | Enron Oil & Gas Company | Hein, Luz A. Estate #6 | 11,750 | 47935445 |
| 398265 | Apr 14, 1992 | Apr 14, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #31 | 8,450 | 47935078 |
| 398265Amendment | Apr 14, 1992 | Apr 14, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #31 | 8,450 | 47935078 |
| 398248 | Apr 9, 1992 | Apr 9, 1992 | Enron Oil & Gas Company | Culpepper #7 | 9,050 | 47935443 |
| 398247 | Apr 9, 1992 | Apr 9, 1992 | Enron Oil & Gas Company | Hirsch Estate 1772 #6 | 9,850 | 47935442 |
| 398128 | Apr 8, 1992 | Apr 8, 1992 | Waters Eng. & Operating, Inc. | Biel Ranch #1 | 1,100 | 47935441 |
| 398182 | Apr 7, 1992 | Apr 7, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #66 | 8,125 | 47935440 |
| 398033 | Apr 6, 1992 | Apr 6, 1992 | Transamerican Natural Gas Corp. | Frost National Bank #45 | 8,500 | 47935438 |
| 397975 | Apr 6, 1992 | Apr 6, 1992 | Transamerican Natural Gas Corp. | B. M. T. #33 | 11,000 | 47935437 |
| 397975Amendment | Apr 6, 1992 | Apr 6, 1992 | Transamerican Natural Gas Corp. | B.M.T. #33 | 11,000 | 47935437 |
| 398071 | Apr 3, 1992 | Apr 3, 1992 | Enron Oil & Gas Company | Flores, Daniel #3 | 12,000 | 47935439 |
| 398071Amendment | Apr 3, 1992 | Apr 3, 1992 | Enron Oil & Gas Company | Flores, Daniel #3 | 12,000 | 47935439 |
| 398021 | Apr 2, 1992 | Apr 2, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #30 | 9,275 | 47935133 |
| 398021Amendment | Apr 2, 1992 | Apr 2, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #30 | 9,275 | 47935133 |
| 397920 | Mar 30, 1992 | Mar 30, 1992 | Enron Oil & Gas Company | Flores, Daniel #2 | 10,000 | 47935436 |
| 397920Amendment | Mar 30, 1992 | Mar 30, 1992 | Enron Oil & Gas Company | Flores, Daniel #2 | 11,000 | 47935436 |
| 397887 | Mar 30, 1992 | Mar 30, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #69 | 8,075 | 47935435 |
| 397829 | Mar 26, 1992 | Mar 26, 1992 | Amoco Production Company | Schwarz, Harry D. "B" #1 | 7,500 | 47933735 |
| 397828 | Mar 26, 1992 | Mar 26, 1992 | Amoco Production Company | Williamson, Stanley "B" #1 | 7,600 | 47934253 |
| 397827 | Mar 26, 1992 | Mar 26, 1992 | Amoco Production Company | Schwarz, Harry D. "A" #2 | 8,100 | 47933893 |
| 397801 | Mar 26, 1992 | Mar 26, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #68 | 9,000 | 47935433 |
| 397801Amendment | Mar 26, 1992 | Mar 26, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #68 | 11,000 | 47935433 |
| 397801Amendment | Mar 26, 1992 | Mar 26, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #68 | 11,000 | 47935433 |
| 397799 | Mar 26, 1992 | Mar 26, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #33 | 9,000 | 47935086 |
| 397798 | Mar 26, 1992 | Mar 26, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #67 | 8,325 | 47935432 |
| 397773 | Mar 25, 1992 | Mar 25, 1992 | Enron Oil & Gas Company | Norfleet, A. V. #4 | 9,800 | 47935431 |
| 397764 | Mar 25, 1992 | Mar 25, 1992 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #59 | 7,625 | 47935430 |
| 397693 | Mar 23, 1992 | Mar 23, 1992 | Sanchez-O'Brien Oil & Gas Corp. | Martin, S. J. #1A | 9,600 | 47932414 |
| 397650 | Mar 20, 1992 | Mar 20, 1992 | Transamerican Natural Gas Corp. | Carr "B" #3 | 9,300 | 47935429 |
| 397640 | Mar 19, 1992 | Mar 19, 1992 | Enron Oil & Gas Company | Hughes-State #2 | 10,650 | 47935428 |
| 397589 | Mar 17, 1992 | Mar 17, 1992 | Enron Oil & Gas Company | Dix Ranch #2 | 9,300 | 47935427 |
| 397554 | Mar 17, 1992 | Mar 17, 1992 | Conoco Inc. | Roseberry #3 | 11,800 | 47935426 |
| 397443 | Mar 17, 1992 | Mar 17, 1992 | Enron Oil & Gas Company | Benavides, Rosa V. 861 #2 | 10,100 | 47935424 |
| 397491 | Mar 13, 1992 | Mar 13, 1992 | Castle Gas Corporation | De Los Santos #1D | 2,900 | 47935425 |
| 397462 | Mar 12, 1992 | Mar 12, 1992 | Michael Petroleum Corporation | Alexander, M. M. #4 | 8,000 | 47935423 |
| 397407 | Mar 11, 1992 | Mar 11, 1992 | Enron Oil & Gas Company | Lessor-Norfleet Gas Unit #1 | 9,550 | 47935421 |
| 397406 | Mar 11, 1992 | Mar 11, 1992 | Enron Oil & Gas Company | Hirsch Estate 2071 #5 | 9,600 | 47935422 |
| 397405 | Mar 11, 1992 | Mar 11, 1992 | Enron Oil & Gas Company | McCann-Pena Gas Unit #1 | 10,200 | 47935420 |
| 397355 | Mar 11, 1992 | Mar 11, 1992 | Conoco Inc. | Benavides, Rosa V. "Al" #46 | 9,300 | 47935419 |
| 397320 | Mar 11, 1992 | Mar 11, 1992 | Conoco Inc. | Benavides, Rosa V. "E" #45 | 9,400 | 47935418 |
| 397148 | Mar 9, 1992 | Mar 9, 1992 | Enron Oil & Gas Company | Hirsch Estate 858 #4 | 9,800 | 47935416 |
| 397073 | Mar 9, 1992 | Mar 9, 1992 | XCL-Texas, Inc. | Ruben Gonzalez Gas Unit #2 | 16,005 | 47934414 |
| 397263 | Mar 6, 1992 | Mar 6, 1992 | Transamerican Natural Gas Corp. | Schwarz #16 | 10,500 | 47935417 |
| 397122 | Mar 5, 1992 | Mar 5, 1992 | Hamilton, J. R. & Archer, J.R. | Dcrc 501-1 #1 | 7,000 | 47935415 |
| 397122Amendment | Mar 5, 1992 | Mar 5, 1992 | Hamilton, J. R. & Archer, J.R. | Dcrc 501-1 #1 | 8,000 | 47935415 |
| 396956 | Mar 3, 1992 | Mar 3, 1992 | Chevron U. S. A. Inc. | Bruni Mineral Trust 'A' #28 | 11,500 | 47935411 |
| 396955 | Mar 3, 1992 | Mar 3, 1992 | Chevron U. S. A. Inc. | Bruni Mineral Trust 'A' #35 | 11,500 | 47935410 |
| 397113 | Mar 2, 1992 | Mar 2, 1992 | Conoco Inc. | Benavides, Rosa V. "A2" #47 | 2,231 | 47935414 |
| 397056 | Feb 27, 1992 | Feb 27, 1992 | Enron Oil & Gas Company | Vaquillas Ranch-State 1194 #3 | 10,100 | 47935413 |
| 397055 | Feb 27, 1992 | Feb 27, 1992 | Enron Oil & Gas Company | Hughes Ranch #2 | 10,600 | 47935412 |
| 396958 | Feb 27, 1992 | Feb 27, 1992 | Transamerican Natural Gas Corp. | Rottersman #10 | 10,800 | 47935408 |
| 396954 | Feb 27, 1992 | Feb 27, 1992 | Chevron U. S. A. Inc. | Bruni Mineral Trust 'A' #38 | 11,500 | 47935409 |
| 396842 | Feb 20, 1992 | Feb 20, 1992 | Conoco Inc. | Lundell "A" #11 | 11,000 | 47935407 |
| 396695 | Feb 20, 1992 | Feb 20, 1992 | Lewis Petro Properties, Inc. | Dawson, K. #1H | 10,500 | 47935405 |
| 396695Amendment | Feb 20, 1992 | Feb 20, 1992 | Lewis Petro Properties, Inc. | Dawson, K. #1H | 10,500 | 47935405 |
| 396826 | Feb 19, 1992 | Feb 19, 1992 | Enron Oil & Gas Company | Frost #1 | 11,200 | 47935406 |
| 396571 | Feb 13, 1992 | Feb 13, 1992 | Conoco Inc. | Vaquillas Ranch Co. Ltd #44 | 10,600 | 47935404 |
| 396519 | Feb 10, 1992 | Feb 10, 1992 | Enron Oil & Gas Company | Vaquillas Ranch Co., Ltd. 1647 #1 | 8,900 | 47934375 |
| 396376 | Feb 7, 1992 | Feb 7, 1992 | Hughes, Dan A. Company | Adams Gas Unit "D" #4 | 5,500 | 47935402 |
| 396469 | Feb 5, 1992 | Feb 5, 1992 | Michael Petr. & Hurd Ent., Ltd. | El Gato "A" #4 | 9,500 | 47935403 |
| 396469Amendment | Feb 5, 1992 | Feb 5, 1992 | Michael Petr. & Hurd Ent., Ltd. | El Gato "A" #4 | 9,500 | 47935403 |