The environment of sandstone containing oil and gas includes underwater distributary's channel and estuary dam in the delta frontier.
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。
2
The water area outside of North Passage is part of the submerged delta in Changjiang estuary, and there is the outlet of the outer navigation channel in North Passage.