天然气地质学

油源断裂古转换带恢复及其输导油气的有利条件——以南堡凹陷2号构造F10断裂为例

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  • 东北石油大学,黑龙江 大庆 163318
王浩然(1989-),男,河北深州人,博士研究生,主要从事油气藏形成与保存研究. E-mail:〖WTBZ〗wanghaoranpro@163.com.

收稿日期: 2015-09-22

  修回日期: 2015-11-12

  网络出版日期: 2019-09-10

基金资助

国家自然科学基金项目(编号:41372153);东北石油大学研究生创新科研项目(编号:YJSCX2014-007NEPU)联合资助.

Recovery of oil-source fault ancient transfer zone and its favorable conditionsto oil-gas transportation:Taking fault F10 in No.2 structure of Nanpu Sag as an example

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  • Northeast Petroleum University,Daqing 163318,China

Received date: 2015-09-22

  Revised date: 2015-11-12

  Online published: 2019-09-10

摘要

为了研究油源断裂对油气聚集的控制作用,以南堡凹陷2号构造F10断裂为例,在油源断裂厘定、断裂转换带识别的基础上,通过最大断距相减法对F10断裂的古转换带进行了恢复,结果表明:F10断裂上现今5个转换带在油气成藏期——明化镇组沉积时期已形成,且至今变化不大。通过断裂古转换带流体势、砂体、裂缝分布特征与油气分布之间关系研究,对F10断裂古转换带输导油气的有利条件进行了研究,结果表明:F10断裂古转换带输导油气的有利条件主要表现在以下3个方面:①油源断裂古转换带断面呈凸面状,为流体势的汇聚脊,有利于油气垂向汇聚运移;②油源断裂古转换带控制分支河道流向,砂体发育,有利于油气穿过断层进行侧向运移;③油源断裂古转换带应力集中,裂缝发育,有利于油气垂向和侧向运移。

本文引用格式

王浩然, 付广, 孙同文 . 油源断裂古转换带恢复及其输导油气的有利条件——以南堡凹陷2号构造F10断裂为例[J]. 天然气地球科学, 2016 , 27(10) : 1848 -1854 . DOI: 10.11764/j.issn.1672-1926.2016.10.1848

Abstract

In order to study oil-gas accumulation controlling effect of oil-source fault,taking fault F10 in No.2 structure of Nanpu Sag as an example,based on the determination of oil-source fault and recognition of fault transfer zones,ancient transfer zones of fault F10 were recovered through maximum throw subtraction method.The result indicates that:5 present transfer zones of fault F10 have formed in oil-gas reservoir period(sedimentation period of Nm),and change little up to now.Through the study of distribution relation between oil-gas and fluid potential,sandbodies and fracture features of fault ancient transfer zones,favorable conditions for oil-gas transportation of ancient transfer zones of fault F10 were studied.The result indicates that favorable conditions for oil-gas transportation of ancient transfer zones of fault F10 are mainly as following:(1)oil-source fault ancient transfer zones have convex fault planes,which are fluid potential cumulative ridges,and they are in favor of oil-gas vertical migration;(2)oil-source fault ancient transfer zones control the flow direction of branch river,with much sandbodies deposited,which is in favor of oil-gas lateral migration through fault;(3)oil-source ancient fault transfer zones concentrate stress,with much fracture developed,which is in favor of oil-gas vertical and lateral migration.

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