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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

王浩然，付广，孙同文   

  1. 东北石油大学，黑龙江 大庆 163318
  • 收稿日期:2015-09-22 修回日期:2015-11-12 出版日期:2016-10-10 发布日期:2016-10-10
  • 通讯作者: 付广(1962-)，男，辽宁新宾人，教授，博士生导师，博士，主要从事油气藏形成与保存研究. E-mail:〖WTBZ〗fuguang2008@126.com.
  • 作者简介: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.
  • 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

Wang Hao-ran，Fu Guang，Sun Tong-wen   

  1. Northeast Petroleum University,Daqing 163318,China
  • Received:2015-09-22 Revised:2015-11-12 Online:2016-10-10 Published:2016-10-10

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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。

关键词: 油源断裂, 转换带, 输导油气, 有利条件, 南堡凹陷, F10断裂

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.

Key words: Oil-source fault, Transfer zone, Oil-gas transportation, Favorable conditions, Nanpu Sag, Fault F10

中图分类号: 

  • TE122.1+2

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