石油地球物理勘探2025，Vol.60Issue(3)：752-760,9.DOI:10.13810/j.cnki.issn.1000-7210.20240508
断砂配置输导—封闭连续转换部位预测方法及应用
Method for determining transitional zones between migration path-ways and sealing sections based on transport direction in fault-sand configuration and its application:A case study of Niuju area in eastern Liaohe Depression
摘要
Abstract
To elucidate the characteristics of hydrocarbon migration along source faults and their distribution pat-terns in different sand bodies on both sides of the faults,a predictive method is developed based on the classifica-tion of fault-sand configurations.This method determines the hydrocarbon migration pathways by identifying the sealing sections of regional mudstone cap rocks and the sealing sections by assessing the degree of sealing in the fault fill material at the fault-sand configurations.The method utilizes the fault-connection thickness and the degree of sealing in the fault fill material to determine transport direction in fault-sand configuration and thereby predict the distribution of transitional zones between migration pathways and sealing sections.This method is applied to the Niuju area in the eastern part of the Liaohe Depression,Bohai Bay Basin.The results indicate that the transitional zones between migration pathways and sealing sections in the fault-sand configurations of the Niuxi fault and the upper Es3 sand bodies are mainly distributed in the central part,with a minor distribution in the eastern part.This distribution favors the accumulation of hydrocarbons generated from the Es3 source rocks within the traps of the upper Es3,which aligns with the currently discovered hydrocarbon distribution near the Niuxi fault.This demonstrates that the method is suitable for delineating the distribution of transitional zones between migration pathways and sealing sections in fault-sand configurations.关键词
断砂配置/输导油气/封闭油气/连续转换/部位分布/刻画方法Key words
fault-sand configuration/transporting oil and gas/sealing oil and gas/continuous transition/distribu-tion of sites/delineating method分类
天文与地球科学引用本文复制引用
于雪峰,于福生,郭强,韩宏伟..断砂配置输导—封闭连续转换部位预测方法及应用[J].石油地球物理勘探,2025,60(3):752-760,9.基金项目
本项研究受国家自然科学基金项目"负反构造成因演化主控因素物理模拟和离散元数值模拟"(42072144)资助. （42072144）
