| 124460 | Jun 2, 1981 | Jun 2, 1981 | Amoco Production Company | Harris | Drilling District No. 4 (08809) #220106181 | 4,150 |
| 119847 | Jun 2, 1981 | Jun 2, 1981 | Amoco Production Company | Ector | North Cowden Unit #1118 W13533657 | 4,300 |
| 119746 | Jun 2, 1981 | Jun 2, 1981 | Amoco Production Company | Hardin | Bowyer, John M. #119931604 | 11,500 |
| 120901 | Jun 1, 1981 | Jun 1, 1981 | Amoco Production Company | Hidalgo | La Blanca Gas Unit #2221501021 | 9,605 |
| 119708 | Jun 1, 1981 | Jun 1, 1981 | Amoco Production Company | Hardin | Moskowitz, J.L. #3319931602 | 4,897 |
| 119345 | May 26, 1981 | May 26, 1981 | Amoco Production Company | Milam | McDaniel, Daniel D. "A" #133131079 | 5,600 |
| 124901 | May 22, 1981 | May 22, 1981 | Amoco Production Company | Ector | North Cowden Unit #111313533669 | 4,800 |
| 124849 | May 22, 1981 | May 22, 1981 | Amoco Production Company | Ector | North Cowden Unit #111013533675 | 4,850 |
| 124679 | May 22, 1981 | May 22, 1981 | Amoco Production Company | Ector | North Cowden Unit (20164) #110513533673 | 4,450 |
| 124673 | May 22, 1981 | May 22, 1981 | Amoco Production Company | Ector | North Cowden Unit (20164) #110613533674 | 4,800 |
| 120165 | May 22, 1981 | May 22, 1981 | Amoco Production Company | Ector | North Cowden Unit #110413533672 | 4,450 |
| 120164 | May 22, 1981 | May 22, 1981 | Amoco Production Company | Ector | North Cowden Unit #110913533676 | 4,800 |
| 119874 | May 22, 1981 | May 22, 1981 | Amoco Production Company | Ector | North Cowden Unit #111213533677 | 4,850 |
| 118976 | May 21, 1981 | May 21, 1981 | Amoco Production Company | Ector | Ncu Coop Water Injection #9613533665 | 4,525 |
| 118975 | May 21, 1981 | May 21, 1981 | Amoco Production Company | Ector | North Cowden Unit #111413533678 | 4,300 |
| 118972 | May 21, 1981 | May 21, 1981 | Amoco Production Company | Ector | North Cowden Unit #111113533679 | 4,775 |
| 119016 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #111613533655 | 4,300 |
| 119015 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #1096 W13533653 | 4,550 |
| 119014 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #109413533659 | 4,500 |
| 119013 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #111713533662 | 4,300 |
| 119011 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #110713533646 | 4,725 |
| 119010 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #1092 W13533652 | 4,650 |
| 119009 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #1093W13533651 | 4,650 |
| 119008 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #109913533661 | 4,500 |
| 119006 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #1108W13533654 | 4,775 |
| 119004 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #110213533660 | 4,450 |
| 118999 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Ector | North Cowden Unit #111513533656 | 4,375 |
| 118656 | May 20, 1981 | May 20, 1981 | Amoco Production Company | Webb | Killam-Hurd-Amoco Walker #147933036 | 7,500 |
| 118977 | May 18, 1981 | May 18, 1981 | Amoco Production Company | Howard | Echols, Eula B. "A" #422732447 | 9,500 |
| 118673 | May 18, 1981 | May 18, 1981 | Amoco Production Company | Hidalgo | Sweeney, J.J. #621531137 | 8,315 |
| 118443 | May 18, 1981 | May 18, 1981 | Amoco Production Company | Hardin | Borden, Clara #819931598 | 7,000 |
| 124384 | May 13, 1981 | May 13, 1981 | Amoco Production Company | Freestone | Sims, J E #116130553 | 10,260 |
| 117666 | May 12, 1981 | May 12, 1981 | Amoco Production Company | Hockley | Frazier, W.G. #1 D21900675 | 12,675 |
| 117404 | May 7, 1981 | May 7, 1981 | Amoco Production Company | Chambers | Abercrombie, J.S. Fee #107131192 | 6,786 |
| 117854 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #108913533642 | 4,750 |
| 117853 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #108813533643 | 4,750 |
| 117852 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #108713533644 | 4,750 |
| 117812 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #109013533641 | 4,750 |
| 117811 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #109513533640 | 4,450 |
| 117810 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #109713533639 | 4,500 |
| 117809 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #109813533638 | 4,450 |
| 117808 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #110013533637 | 4,400 |
| 117807 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #110113533636 | 4,425 |
| 117806 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #109113533634 | 4,750 |
| 117805 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #110313533635 | 4,425 |
| 117804 | May 6, 1981 | May 6, 1981 | Amoco Production Company | Ector | North Cowden Unit #108613533645 | 4,650 |
| 118369 | May 5, 1981 | May 5, 1981 | Amoco Production Company | Brazoria | S.A. Pennock Estate #1103931685 | 6,200 |
| 118849 | May 4, 1981 | May 4, 1981 | Amoco Production Company | Sherman | Whorton, W. A. "A" #542130255 | 5,600 |
| 117059 | May 4, 1981 | May 4, 1981 | Amoco Production Company | Ector | Fasken, David "BM" #113533647 | 11,000 |
| 118937 | May 1, 1981 | May 1, 1981 | Amoco Production Company | Willacy | A.B. Crane #448930657 | 6,200 |
| 116467 | Apr 30, 1981 | Apr 30, 1981 | Amoco Production Company | Webb | Killam-Hurd-Amoco Fee "D" #147933023 | 7,700 |
| 117388 | Apr 29, 1981 | Apr 29, 1981 | Amoco Production Company | Hidalgo | Sweeney, J.J. #721531131 | 8,300 |
| 116347 | Apr 29, 1981 | Apr 29, 1981 | Amoco Production Company | Webb | Killam-Hurd-Amoco/A/ #147933022 | 8,200 |
| 118738 | Apr 27, 1981 | Apr 27, 1981 | Amoco Production Company | Ector | Cowden, W.F. #3013533461 | 8,100 |
| 116102 | Apr 27, 1981 | Apr 27, 1981 | Amoco Production Company | Andrews | Cowden, Frank R/a "A" #100306276 | 5,378 |
| 116027 | Apr 24, 1981 | Apr 24, 1981 | Amoco Production Company | Freestone | Abington, Cassie Lee Gas Unit #116130664 | 10,500 |
| 116012 | Apr 24, 1981 | Apr 24, 1981 | Amoco Production Company | Harrison | Jackson, W.E. Gas Unit #120330843 | 10,100 |
| 115795 | Apr 23, 1981 | Apr 23, 1981 | Amoco Production Company | Harrison | Chauvin - Landry Gas Unit #120330841 | 10,400 |
| 116268 | Apr 22, 1981 | Apr 22, 1981 | Amoco Production Company | S Padre IS-LB | State of Texas Tract 1045-L SW/4 #170030039 | 19,000 |
| 116518 | Apr 16, 1981 | Apr 16, 1981 | Amoco Production Company | Andrews | University Consolidated X III #1000330667 | 12,665 |
| 118452 | Apr 14, 1981 | Apr 14, 1981 | Amoco Production Company | Upton | A.S. Burleson #2846100175 | 1,600 |
| 115079 | Apr 14, 1981 | Apr 14, 1981 | Amoco Production Company | Milam | Roessler, Roman #133131065 | 4,475 |
| 119068 | Apr 8, 1981 | Apr 8, 1981 | Amoco Production Company | Brazoria | Schmidt, R. J. #303931675 | 6,200 |
| 114238 | Apr 8, 1981 | Apr 8, 1981 | Amoco Production Company | Panola | Burnett Brothers #436580559 | 6,447 |
| 114235 | Apr 8, 1981 | Apr 8, 1981 | Amoco Production Company | Harrison | McGee Gas Unit "B" #120330835 | 10,200 |
| 114235Amendment | Apr 8, 1981 | Apr 8, 1981 | Amoco Production Company | Harrison | McGee Gas Unit "B" #120330835 | 10,125 |
| 114199 | Apr 8, 1981 | Apr 8, 1981 | Amoco Production Company | Rusk | Hilliard Gas Unit #140131175 | 10,900 |
| 114181 | Apr 7, 1981 | Apr 7, 1981 | Amoco Production Company | Harrison | Slater Gas Unit #220330233 | 10,200 |
| 142457 | Apr 6, 1981 | Apr 6, 1981 | Amoco Production Company | Hidalgo | South Weslaco Gas Unit #821501218 | 8,969 |
| 117151 | Apr 6, 1981 | Apr 6, 1981 | Amoco Production Company | Refugio | O'Brien, J. M. "B" #11C39131343 | 1,400 |
| 116435 | Mar 30, 1981 | Mar 30, 1981 | Amoco Production Company | Roberts | Vollmert, J.C. "A" #139380257 | 10,950 |
| 113592 | Mar 30, 1981 | Mar 30, 1981 | Amoco Production Company | Lynn | Wuensche, Herman #130530244 | 9,400 |
| 113699 | Mar 27, 1981 | Mar 27, 1981 | Amoco Production Company | Live Oak | Doebbler, C. F. #129780395 | 8,655 |
| 113470 | Mar 27, 1981 | Mar 27, 1981 | Amoco Production Company | Hidalgo | Sweeney, J.J. #421530221 | 10,000 |
| 119568 | Mar 26, 1981 | Mar 26, 1981 | Amoco Production Company | Gaines | Odc/San Andres/Unit #2716532002 | 5,600 |
| 113376 | Mar 26, 1981 | Mar 26, 1981 | Amoco Production Company | Andrews | Midland Farms Unit #55100332719 | 5,000 |
| 113375 | Mar 26, 1981 | Mar 26, 1981 | Amoco Production Company | Andrews | Midland Farms Unit #55000333296 | 5,000 |
| 113186 | Mar 25, 1981 | Mar 25, 1981 | Amoco Production Company | Brazoria | Ducroz, James L., G.U. #103931674 | 21,000 |
| 112933 | Mar 23, 1981 | Mar 23, 1981 | Amoco Production Company | Harris | Carpenter, Frank A. #5 D20130602 | 6,750 |
| 113006 | Mar 20, 1981 | Mar 20, 1981 | Amoco Production Company | Harrison | Dorsett, W. N. Gas Unit #120330830 | 10,330 |
| 112428 | Mar 18, 1981 | Mar 18, 1981 | Amoco Production Company | Nueces | Shaffer, Katherine L. "B" #835531587 | 4,050 |
| 112425 | Mar 18, 1981 | Mar 18, 1981 | Amoco Production Company | Navarro | Cunningham, John D. #634931671 | 10,400 |
| 112246 | Mar 13, 1981 | Mar 13, 1981 | Amoco Production Company | Ector | Cowden, Elliott F. "A" #14813534093 | 5,000 |
| 112185 | Mar 13, 1981 | Mar 13, 1981 | Amoco Production Company | Robertson | Elm Grove "B" #139530235 | 7,778 |
| 111927 | Mar 12, 1981 | Mar 12, 1981 | Amoco Production Company | Robertson | Elm Grove "C" #139530234 | 7,757 |
| 114713 | Mar 11, 1981 | Mar 11, 1981 | Amoco Production Company | Gaines | Odc/San Andres/Unit #2616532003 | 5,600 |
| 111715 | Mar 10, 1981 | Mar 10, 1981 | Amoco Production Company | Harrison | Tomberlain, Charles W. #120330829 | 9,530 |
| 111686 | Mar 10, 1981 | Mar 10, 1981 | Amoco Production Company | Harrison | Brewster, Nancy Gas Unit #120330828 | 10,400 |
| 111686Amendment | Mar 10, 1981 | Mar 10, 1981 | Amoco Production Company | Harrison | Nancy Brewster Gas Unit #120330828 | 10,275 |
| 111644 | Mar 10, 1981 | Mar 10, 1981 | Amoco Production Company | Burleson | Dillon, Don et Al #105131431 | 8,200 |
| 111606 | Mar 10, 1981 | Mar 10, 1981 | Amoco Production Company | Terry | Prentice Northeast Unit #10244500452 | 7,000 |
| 111597 | Mar 10, 1981 | Mar 10, 1981 | Amoco Production Company | Terry | Prentice Northeast Unit #13144510234 | 7,100 |
| 111593 | Mar 10, 1981 | Mar 10, 1981 | Amoco Production Company | Terry | Prentice Northeast Unit #118 B44500333 | 7,000 |
| 111453 | Mar 9, 1981 | Mar 9, 1981 | Amoco Production Company | Burleson | Box-Kelly Unit #105131423 | 8,300 |
| 111107 | Mar 6, 1981 | Mar 6, 1981 | Amoco Production Company | Harrison | Allen, Lenora Gas Unit #120330827 | 10,400 |
| 110792 | Mar 4, 1981 | Mar 4, 1981 | Amoco Production Company | Roberts | Mahler, G.A. #539330856 | 10,700 |
| 110553 | Mar 3, 1981 | Mar 3, 1981 | Amoco Production Company | Karnes | Belknap, W. P. Jr. #125501186 | 6,817 |
| 110242 | Mar 2, 1981 | Mar 2, 1981 | Amoco Production Company | Matagorda | Old Ocean Unit #1932100743 | 10,830 |
| 110208 | Mar 2, 1981 | Mar 2, 1981 | Amoco Production Company | Panola | Burnett Brothers #1536531238 | 6,800 |
| 110206 | Mar 2, 1981 | Mar 2, 1981 | Amoco Production Company | Nacogdoches | Case, Emmett Gas Unit #134730549 | 11,500 |