Coupling processes between self-oscillation of formation pressure and periodic migration-a

Coupling processes between self-oscillation of formation pressure and periodic migration-accumulation of natural gases in Yinggehai Basin,

South China Sea

作者：龚再升;陈红汉;孙永传;;;;

作者机构：China Offshore Oil Corp.;Beijing 100027;China;China University of Geosciences;Wuhan 430074;China; 来源：中国科学 年：2000 卷：000 期：005

页码：P.494-500 页数：7

中图分类：P618.13 正文语种：CHI

关键词：Yinggehai basin modeling of formation pressure self-oscillation migration-accumulation site.

摘要：The modeling of formation pressure in Yinggehai shows that DF1-1 diapir has oscilla-torily released thermal fluids twice since 5.0 Ma, which may be controlled by the multi-structural subsidences and their accompanying thermal events. Using thermal indicators of formation temperature by DST, I/S mixed clay minerals, homogeneous

temperature of inorganic fluid inclusion and δ13C of methane to trace the thermal fluid migrating order and path, we found that there are two orders of natural gas migration-accumulation in the upper site over the