西南石油大学学报(自然科学版)

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Cenozoic Fault Structure and Hydrocarbon Accumulation#br# Model in the Banqiao Sag

SONG Fan1*, SU Ni′na1, YAO Ruixiang2, CHU Shumin2, ZHANG Ruixue1   

  1. 1. College of Geoscience and Technology,China University of Petroleum,Qingdao,Shandong 266580,China
    2. No. 4 Oil Production Plant,Dagang Oilfield Company,CNPC,Binhai,Tianjin 300280,China
  • Online:2016-04-11 Published:2016-04-11

Abstract:

In order to reveal the relationship between the Cenozoic fault structure and hydrocarbon accumulation of Banqiao
sag,the fault activity and their reservoir-controlling mechanism are systematically researched using the oilfield structural analysis
method. The results show that the sag can be divided into three structural zones:the faulted tectonic transfer belt in the
north,the faulted nose belt in the central and strike-slip deformation belt in the south. The master faults exhibiting geological
periods vertically and segments horizontally,generate a lot of secondary faults. The fault activities at all levels formed the
panorama of Cenozoic fault structure. Based on comprehensive research of fault activity and carrier systems,as well as the
hydrocarbon distribution,two different models of migration and accumulation are established,which are“deep and shallow
accumulation in contemporaneous faults”and“shallow accumulation in secondary faults”respectively.

Key words: Banqiao Sag, contemporaneous fault, fault activity, structure evolution, hydrocarbon accumulation model

CLC Number: