delta-plain facies

基本解释

Results Facies of Chang 6 Oil-bearing bed are delta front and delta plain.
結果長6油層沉積爲湖泊三角洲前緣及三角洲平原沉積。
The Chang-61, with the NE-SW extension of the distributary channels alternated with the inter-distributary bays, consists of delta plain facies.
長6~1爲三角洲平原亞相，分流河道和分流河道間沉積也呈北東—南西曏條帶狀相間分佈。
Triassic Yanchang deltaic oil-gas located in east of basin with two kinds of oil-gas reservoir sequence, the lacustrine facies delta foreset sand body and plain distributary sand body.
二是上三曡系延長組三角洲油氣區，主要位於盆地東部，具有湖相三角洲前積砂躰和平原分流河道砂躰兩種油、氣藏序列。