三角洲前缘相（delta-front facies）是三角洲相沉积亚相类型之一。三角洲沉积相共分为三个亚相，即三角洲平原亚相（delta-plain facies)、三角洲前缘亚相（delta-front facies）、前三角洲亚相（prodelta facies）。其中，三角洲平原亚相是三角洲的水上部分，三角洲前缘亚相和前三角洲亚相为水下部分。
含油气砂岩段主要以三角洲前缘水下分流河道和水下分流河口砂坝沉积微相为主。
The environment of sandstone containing oil and gas includes underwater distributary's channel and estuary dam in the delta frontier.
该构造储层属三角洲前缘亚相的水下分流河道微相沉积，并存在由成岩作用形成的次生孔隙发育带。
Its reservoir with secondary porosity zone is also a key for petroleum pool formation, which is of distributary channel of fan delta front.
建议今后勘探应注重三角洲平原亚相和前缘亚相的分支河道砂、河口砂坝中的块状粗—中砂岩储层。
It suggests that the reservoirs with the branch channel sand in the delta plain and front and coarse to medium sandstones are the important exploration targets in the future.
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