摘要
郯庐断裂带在新构造运动时期表现非常活跃,在强烈构造背景下,郯庐断裂带渤中-渤南段形成多个大中型油田,断层活动性对油气运聚与保存起到重要作用。利用断层活动速率的方法,从主次断层活动性在不同构造部位的差异方面入手,分析并总结郯庐断裂带渤中-渤南段新构造运动期断层活动性与油气运聚保存的关系,揭示在强烈活动构造背景下晚期油气成藏机理。研究表明,郯庐断裂带断层活动具有分段性,主干断裂活动性较弱区易于油气汇聚保存,主干断裂活动性较强区油气易散失不利于油气的保存。活跃主干断层与活动性较弱次级断层的有效组合,有利于油气的运聚和保存。
The Tanlu fault zone was very active in the process of the Neotectonic movement. Although the tectonic movement was intense, several medium- and large-sized oil fields were formed in the Bozhong-Bonan segments of the Tanlu fault zone,indicating that fault activity played a key role in the migration and accumulation of hydrocarbons during this period. This paper, starting with the activity differences between the major and secondary faults in different tectonic settings, uses the fault activity rate （FAR） method to analyze and summarize the re- lationship between fault activities and hydrocarbon migration ＆ accumulation during the Neotectonic period and to reveal the mechanism of late hydrocarbon accumulation in the study area. The results show that fault activities vary across different segments of the zone. The main faults with weaker activities are favorable for hydrocarbon accumulations,while those with stronger activities are the opposite, as it is easy for hydrocarbons to escape. A combination of active main faults with secondary faults of weaker activity is considered good for hydrocarbon migration, accumulation, and preservation.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2009年第4期462-468,482,共8页
Oil & Gas Geology
基金
中海石油(中国)有限公司项目(SC06TJ-TQL-004)
作者简介
姜丽娜（1984-），女，硕士，矿产普查与勘探。
