异常高压区的古沉积厚度和古地层压力恢复方法探讨

刘福宁

doi:10.11743/ogg19940211

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专辑

异常高压区的古沉积厚度和古地层压力恢复方法探讨
AN APPROACH TO RECONSTRUCTION OF PALEO-SEDIMENTARY THICKNESS AND PALEO-FORMATION PRESSURE IN ABNORMAL HIGH PRESSURE REGION
1994年15卷第2期页码：180-185
网络首发：1994-06-25，

纸质出版：1994
DOI： 10.11743/ogg19940211
稿件说明：

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刘福宁. 异常高压区的古沉积厚度和古地层压力恢复方法探讨[J]. 石油与天然气地质, 1994,15(2):180-185. DOI： 10.11743/ogg19940211.

Liu Funing. AN APPROACH TO RECONSTRUCTION OF PALEO-SEDIMENTARY THICKNESS AND PALEO-FORMATION PRESSURE IN ABNORMAL HIGH PRESSURE REGION[J]. 1994, 15(2): 180-185. DOI： 10.11743/ogg19940211.

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.

Abstract

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.