The reservoir sandbody of Dujiatai oil formation in the study area can be genetically attributed to anear--sourced and rapidly accumulated fan delta.

• 究区杜家台油层的储集砂体属近源、快速堆积的扇三角洲成因，主要的储集岩石类型包括细砾岩类、不等粒砂岩类、砂岩类及粉砂岩类。