摘要
古沉积厚度和古地层压力的恢复是研究沉积盆地发育史、排烃史、油气运移聚集历史的一个极为重要的方面。本文从ＱＤＮ盆地泥岩声波时差资料出发，用泥岩压实的不可逆原理，建立单层组地层的孔隙度一深度，孔隙度－时间的正常压实趋势线，推导出了一套适用于异常高压区的古厚度和古地层压力恢复的方法。并利用此方法分析了该区异常地层压力形成机制、时间，以及油气运移聚集条件。
The reconstruction of paleo-sedimentary thickness and paleo-formation pressure isvery important indeed in studying the history of the basin's evolution, hydrocarbon exploration, migration and accumulation. According to the data of mudstone coustic time of DNBasin, normal-compaction trend lines of single formation pore-depth and pore-time wereset up by application of mudstone compaction irreversible principle, and the reconstructionmethod of paleo-sedimentary thickness and paleo-formation pressure in a abnormal highpressure region was derived in this paper. Finally the author used this method to analysethe mechanism and time of the pressure formation and the condition of hydrocarbon accumulation and migration.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1994年第2期180-185,共6页
Oil & Gas Geology
