渤海湾盆地隐性断裂带成因类型特征及其对油气聚集的控制作用

周维维, 王伟锋, 安邦, 胡瑜, 董敏

doi:10.11764/j.issn.1672-1926.2014.11.1727

天然气地球科学 >

2014 , Vol. 25 >Issue 11: 1727 - 1734

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.11.1727

天然气地质学

渤海湾盆地隐性断裂带成因类型特征及其对油气聚集的控制作用

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中国石油大学(华东)地球科学与技术学院，山东青岛 266580

周维维(1986-)，男，辽宁朝阳人，博士研究生，主要从事含油气盆地地质构造研究. E-mail:weiwei29100591@163.com.

收稿日期: 2013-11-07

修回日期: 2014-08-13

网络出版日期: 2019-09-20

基金资助

国家自然科学基金项目(编号:41340008)|中央高校基本科研业务费专项资金(编号:14CX06069)联合资助.

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Genetic Types of Potential Fault Zone and Its Significance on Hydrocarbon Accumulation

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School of Geosciences,China University of Petroleum,Qingdao 266580,China

Received date: 2013-11-07

Revised date: 2014-08-13

Online published: 2019-09-20

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摘要

隐性断裂带是区域、局部应力场、基底断裂活动及潜山块体扭动影响下在沉积盆地盖层中产生的具有不同成因及规模的断裂趋势带，它是深走滑断裂的伴生构造，具有较强的隐蔽性。渤海湾盆地的隐性断裂带可以总结为5种成因类型:①板块活动引起的构造应力场变化形成的区域构造应力型隐性断裂带；②基底断裂体系及其活动性形成的基底活动型隐性断裂带；③潜山呈雁列式排列形成的区域隆升型隐性断裂带；④局部应力场变化形成的变换型隐性断裂带；⑤潜山块体之间以及内幕薄弱带扭动形成的潜山扭动型隐性断裂带。研究认为，隐性断裂带控制了储集砂体分布，小断层与中低幅度构造组合形成断鼻、断块等多种类型的隐蔽圈闭带，潜山沿其分布形成构造脊，是油气长期运移指向区。

关键词： 隐性断裂带; 基底断裂; 潜山; 雁列式; 储集砂体; 油气聚集

本文引用格式

周维维, 王伟锋, 安邦, 胡瑜, 董敏 . 渤海湾盆地隐性断裂带成因类型特征及其对油气聚集的控制作用[J]. 天然气地球科学, 2014 , 25(11) : 1727 -1734 . DOI: 10.11764/j.issn.1672-1926.2014.11.1727

Abstract

Potential fault zone refers to the zone bearing fracture tendency with different origin and scale which is caused by regional or local stress field and basement fault activities in the covering of sedimentary.It is a kind of fault zone and has relatively strong concealment.These zones are hidden and exhibit insignificant characteristics.Therefore,they are difficult to be identified and likely to be ignored.The characteristics of the rift system in the covering of sedimentary basin have been repeatedly studied by researchers around the world.The results suggest that potential fault zone is a tectonic phenomenon commonly arising in the covering of sedimentary basins in various states.According to the formation mechanism,potential fault zones can be classified into 5 types:(1)regional tectonic stress type of potential fault zone:formed by the changes of tectonic stress field which is caused by plate,mantle plume activities|(2)basal activity type of potential fault zone:formed by basement rift system and associated activities|(3)regional uplift type of potential fault zone:formed by echelon arranged burial hills|(4)transformation type of potential fault zone:formed by the changes of local stress field|(5)burial hill twist type of potential fault zone:formed by twist between burial hills and inner weak belts.The research indicates that potential fault zone controls the distribution of reservoir sand-bodies.Small faults and medium to low-amplitude structures are combined to form potential traps like fault-noses,fault blocks etc.Burial hill along its distribution formed structure ridge which is the pointing area of long-term hydrocarbon migration.

Key words： Potential fault zone; Basement fault; Buried hill; En-echelon; Reservoir; Hydrocarbon accumulation

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