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引用“封存箱”概念,研究了南海北部大陆架典型富油气凹陷的地层超压特征。根据封存箱的超压强度及顶面埋深特征,将研究区内的封存箱划分为5类。各典型凹陷的封存箱类型对油气藏的纵向分布起着重要的控制作用。封存箱类型研究有助于从压力条件方面预测油气藏勘探的有利层系及有利地区。
The concept of “storage box” was used to study the stratigraphic overpressure characteristics of the typical oil and gas depressions in the northern continental shelf of the South China Sea. According to the overpressure intensity of the storage box and the characteristics of the top buried depth, the storage boxes in the research area are divided into five categories. The type of the reservoir in each typical depression plays an important role in controlling the vertical distribution of the reservoir. The study on the type of enclosure will help to predict favorable stratigraphy and favorable areas of hydrocarbon exploration from the pressure conditions.