| 330074 | May 13, 1987 | May 13, 1987 | Amoco Production Company | Ector | North Cowden Unit #129013535549 | 5,065 |
| 330203 | May 12, 1987 | May 12, 1987 | Amoco Production Company | Bee | Heard, C. E. 'B' #1402530032 | 4,900 |
| 330202 | May 12, 1987 | May 12, 1987 | Amoco Production Company | Bee | Heard, C. E. 'B' #502501529 | 5,000 |
| 330201 | May 12, 1987 | May 12, 1987 | Amoco Production Company | Bee | Heard, C. E. 'B' #302501527 | 5,002 |
| 329937 | May 12, 1987 | May 12, 1987 | Amoco Production Company | Ector | North Cowden Unit #131413535543 | 5,115 |
| 329936 | May 12, 1987 | May 12, 1987 | Amoco Production Company | Ector | North Cowden Unit #131513535542 | 5,125 |
| 329935 | May 12, 1987 | May 12, 1987 | Amoco Production Company | Ector | North Cowden Unit #131613535541 | 5,170 |
| 329934 | May 12, 1987 | May 12, 1987 | Amoco Production Company | Ector | North Cowden Unit #131813535544 | 5,085 |
| 329968 | May 8, 1987 | May 8, 1987 | Amoco Production Company | Ector | North Cowden Unit #131213535547 | 5,105 |
| 329967 | May 8, 1987 | May 8, 1987 | Amoco Production Company | Ector | North Cowden Unit #131113535546 | 5,055 |
| 329966 | May 8, 1987 | May 8, 1987 | Amoco Production Company | Andrews | North Cowden Unit #128700335812 | 5,130 |
| 329842Amendment | May 7, 1987 | May 7, 1987 | Amoco Production Company | Andrews | University "CI" #400335810 | 14,700 |
| 329863 | May 6, 1987 | May 6, 1987 | Amoco Production Company | Jefferson | Keith & Dowlen #2224503025 | 6,130 |
| 329863Amendment | May 6, 1987 | May 6, 1987 | Amoco Production Company | Jefferson | Keith & Dowlen #2224503025 | 6,130 |
| 329862 | May 6, 1987 | May 6, 1987 | Amoco Production Company | Refugio | Heard, Ira 'A' #1439130158 | 7,700 |
| 329573 | May 1, 1987 | May 1, 1987 | Amoco Production Company | Yoakum | Ownby Upper Clearfork Unit #1250133112 | 8,600 |
| 328716 | May 1, 1987 | May 1, 1987 | Amoco Production Company | Ector | South Foster Unit #18613535519 | 4,800 |
| 329493 | Apr 29, 1987 | Apr 29, 1987 | Amoco Production Company | Irion | Pfluger, Dora S. "M" #123532797 | 11,400 |
| 329535 | Apr 28, 1987 | Apr 28, 1987 | Amoco Production Company | Brazoria | David M. Townsend Sr. G.U. #103932194 | 22,000 |
| 328188 | Apr 24, 1987 | Apr 24, 1987 | Amoco Production Company | Yoakum | Carleton, A. H. #350133170 | 6,200 |
| 329305 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Ector | North Cowden Unit #131013535530 | 5,110 |
| 329304 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Ector | North Cowden Unit #130613535529 | 5,025 |
| 329303 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Ector | North Cowden Unit #130513535528 | 5,000 |
| 329302 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Ector | North Cowden Unit #129413535527 | 5,170 |
| 329301 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Ector | North Cowden Unit #128913535526 | 5,095 |
| 329300 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Ector | North Cowden Unit #128813535525 | 5,075 |
| 329299 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Andrews | North Cowden Unit #128600335801 | 5,130 |
| 328312 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Refugio | O'Connor, Mary Ellen #2639104027 | 5,950 |
| 328311 | Apr 21, 1987 | Apr 21, 1987 | Amoco Production Company | Refugio | O'Connor, Mary Ellen #4739130597 | 6,400 |
| 329174 | Apr 17, 1987 | Apr 17, 1987 | Amoco Production Company | Matagorda | Old Ocean Unit #2132100764 | 10,248 |
| 328928 | Apr 16, 1987 | Apr 16, 1987 | Amoco Production Company | Glasscock | Powell, E. L. #817331978 | 8,900 |
| 325505 | Apr 13, 1987 | Apr 13, 1987 | Amoco Production Company | Gregg | Castleberry, A. A. #1818330698 | 3,700 |
| 328759 | Apr 7, 1987 | Apr 7, 1987 | Amoco Production Company | Brazoria | Grote, Emil #1403904947 | 5,012 |
| 327205 | Apr 3, 1987 | Apr 3, 1987 | Amoco Production Company | Ector | Witcher, J. E. #8313535502 | 4,625 |
| 327203 | Apr 3, 1987 | Apr 3, 1987 | Amoco Production Company | Ector | Witcher, J. E. #8213535501 | 4,625 |
| 328513 | Apr 1, 1987 | Apr 1, 1987 | Amoco Production Company | Hansford | Kansas City Mineral Royalty Co #A 2A19531011 | 8,700 |
| 328346 | Mar 31, 1987 | Mar 31, 1987 | Amoco Production Company | Ector | South Foster Unit #18513535513 | 4,717 |
| 328381 | Mar 30, 1987 | Mar 30, 1987 | Amoco Production Company | Ector | North Cowden Unit #123613535516 | 4,900 |
| 328380 | Mar 30, 1987 | Mar 30, 1987 | Amoco Production Company | Ector | North Cowden Unit #120413535515 | 5,030 |
| 328379 | Mar 30, 1987 | Mar 30, 1987 | Amoco Production Company | Ector | North Cowden Unit #123513535514 | 4,930 |
| 328378 | Mar 30, 1987 | Mar 30, 1987 | Amoco Production Company | Ector | Witcher, J. E. #6613531053 | 9,050 |
| 328377 | Mar 30, 1987 | Mar 30, 1987 | Amoco Production Company | Ector | Witcher, J. E. #6213530643 | 9,190 |
| 328376 | Mar 30, 1987 | Mar 30, 1987 | Amoco Production Company | Ector | Witcher, J. E. #6113530616 | 9,039 |
| 328310 | Mar 26, 1987 | Mar 26, 1987 | Amoco Production Company | Bee | Heard, Claude E. "B" #1102530014 | 4,926 |
| 328309 | Mar 26, 1987 | Mar 26, 1987 | Amoco Production Company | Refugio | El Oso Cattle Company #2739131217 | 6,150 |
| 327131 | Mar 25, 1987 | Mar 25, 1987 | Amoco Production Company | Ector | South Foster Unit #18313535495 | 4,800 |
| 327130 | Mar 25, 1987 | Mar 25, 1987 | Amoco Production Company | Ector | South Foster Unit #17913535494 | 4,800 |
| 327129 | Mar 25, 1987 | Mar 25, 1987 | Amoco Production Company | Ector | South Foster Unit #18013535493 | 4,800 |
| 327128 | Mar 25, 1987 | Mar 25, 1987 | Amoco Production Company | Ector | South Foster Unit #18413535492 | 4,800 |
| 328072 | Mar 23, 1987 | Mar 23, 1987 | Amoco Production Company | Brazoria | West Hastings Unit #820903932186 | 7,000 |
| 328072Amendment | Mar 23, 1987 | Mar 23, 1987 | Amoco Production Company | Brazoria | West Hastings Unit #820903932186 | 6,600 |
| 328071 | Mar 23, 1987 | Mar 23, 1987 | Amoco Production Company | Brazoria | West Hastings Unit #422203932187 | 7,000 |
| 327937 | Mar 23, 1987 | Mar 23, 1987 | Amoco Production Company | Live Oak | Duty Gas Unit #429731717 | 11,200 |
| 327158 | Mar 23, 1987 | Mar 23, 1987 | Amoco Production Company | Ector | Midland Farms "AV" #513533278 | 10,550 |
| 327962 | Mar 19, 1987 | Mar 19, 1987 | Amoco Production Company | Crane | TXL "A" #210333794 | 10,000 |
| 327656 | Mar 12, 1987 | Mar 12, 1987 | Amoco Production Company | Webb | Killam-Hurd-Amoco 'AF' #147934494 | 7,600 |
| 327655 | Mar 12, 1987 | Mar 12, 1987 | Amoco Production Company | Webb | Killam-Hurd-Amoco 'AE' #147934495 | 8,000 |
| 324565 | Mar 12, 1987 | Mar 12, 1987 | Amoco Production Company | Yoakum | Prentice Southwest Unit #10150133124 | 6,900 |
| 327642 | Mar 11, 1987 | Mar 11, 1987 | Amoco Production Company | Hansford | Kansas City Mineral Royalty Co #A 2GU19531008 | 8,700 |
| 327495 | Mar 11, 1987 | Mar 11, 1987 | Amoco Production Company | Refugio | El Oso Cattle Company #2339131162 | 5,150 |
| 327494 | Mar 11, 1987 | Mar 11, 1987 | Amoco Production Company | Refugio | El Oso Cattle Company #1039103677 | 6,003 |
| 327493 | Mar 11, 1987 | Mar 11, 1987 | Amoco Production Company | Refugio | O'Connor, Mary Ellen #3039130008 | 5,950 |
| 327492 | Mar 11, 1987 | Mar 11, 1987 | Amoco Production Company | Refugio | O'Connor, Mary Ellen #139101977 | 6,000 |
| 327187 | Mar 10, 1987 | Mar 10, 1987 | Amoco Production Company | Ector | South Foster Unit #18213535497 | 4,800 |
| 327186 | Mar 10, 1987 | Mar 10, 1987 | Amoco Production Company | Ector | South Foster Unit #18113535496 | 4,800 |
| 327269 | Mar 3, 1987 | Mar 3, 1987 | Amoco Production Company | Ector | Moss "A" #113535498 | 9,600 |
| 327222 | Mar 3, 1987 | Mar 3, 1987 | Amoco Production Company | Yoakum | Ownby Upper Clearfork Unit #2950131480 | 8,567 |
| 327222Amendment | Mar 3, 1987 | Mar 3, 1987 | Amoco Production Company | Yoakum | Ownby Upper Clearfork Unit #2950131480 | 8,567 |
| 327509 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Refugio | O'Connor, Mary Ellen #4439130585 | 6,400 |
| 327085 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #124713535489 | 5,000 |
| 327084 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #124513535490 | 4,950 |
| 327083 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #123813535491 | 4,950 |
| 327082 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #125313535485 | 4,900 |
| 327081 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #126013535486 | 4,950 |
| 327080 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #127013535487 | 4,865 |
| 327079 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #125213535488 | 4,825 |
| 326893 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #122813535461 | 5,000 |
| 326892 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #122713535460 | 4,950 |
| 326891 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #122413535459 | 5,000 |
| 326890 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #122313535477 | 5,000 |
| 326889 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #122213535476 | 4,950 |
| 326888 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #121913535475 | 5,000 |
| 326887 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #121813535474 | 5,000 |
| 326886 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #121713535473 | 4,950 |
| 326885 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #121413535472 | 5,000 |
| 326884 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #121313535471 | 5,000 |
| 326883 | Mar 2, 1987 | Mar 2, 1987 | Amoco Production Company | Ector | North Cowden Unit #121213535470 | 4,950 |
| 327086 | Feb 26, 1987 | Feb 26, 1987 | Amoco Production Company | Hockley | Slaughter, Alex A. /A/ #5521935042 | 8,550 |
| 326874 | Feb 25, 1987 | Feb 25, 1987 | Amoco Production Company | Ector | North Cowden Unit #120613535458 | 4,855 |
| 326882 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #122613535469 | 4,900 |
| 326881 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #122513535468 | 4,875 |
| 326880 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #122113535467 | 4,910 |
| 326879 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #122013535466 | 4,865 |
| 326878 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #121613535465 | 4,910 |
| 326877 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #121113535464 | 4,910 |
| 326876 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #121013535463 | 4,855 |
| 326875 | Feb 24, 1987 | Feb 24, 1987 | Amoco Production Company | Ector | North Cowden Unit #120713535462 | 4,915 |
| 326939 | Feb 23, 1987 | Feb 23, 1987 | Amoco Production Company | Ector | North Cowden Unit #128013535481 | 4,810 |
| 326938 | Feb 23, 1987 | Feb 23, 1987 | Amoco Production Company | Ector | North Cowden Unit #127313535482 | 4,960 |
| 326937 | Feb 23, 1987 | Feb 23, 1987 | Amoco Production Company | Ector | North Cowden Unit #127213535479 | 4,935 |