岩性地层圈闭研究综述

Summary on litho-stratigraphic trap

根据岩性地层圈闭的研究历史和进展,将岩性地层圈闭的研究分为初期阶段、探索阶段和地震综合勘探阶段。现今的研究方法主要是进行层序地层学的研究,建立沉积体系模式,指出有利相带,预测隐蔽圈闭的有利区等。根据不同沉积体系的特点,归纳出3类岩性地层圈闭:浅海碳酸盐岩类、陆相硅质碎屑沉积类和深水沉积类。如何有效地利用层序地层学理论和各种资料进行圈闭预测是目前研究的难点和热点。今后的研究方向是不同地区不同沉积体系的岩性地层圈闭的勘探方法、圈闭与层序地层学的关系、岩性圈闭的地球物理检测技术与综合地质因素的结合等。

There are three stages in the study of litho-stratigraphic trap, includeing the initial-, explorative- and synthetically seismic exploration stages according to the studying history and development. Present research methods mainly include those of the sequence stratigraphy, building models of sedimentary system, indicating good facies tract and forecasting the advantageous area of suppressed trap. The authors concluded three kinds of sedimentary settings for the litho-stratigraphic traps, including the shallow marine carbonate setting, continental siliciclastlc setting and deepwater setting. The difficulty and hotspot appear to be how to use the sequence stratigraphy and various data for trap forecast. The further study lies in the exploration means of different traps, the relations of the traps to sequence stratigraphy, and combination of geophysical technology with synthesizing the geofactor.