Lithologic Reservoirs ›› 2013, Vol. 25 ›› Issue (4): 101-105.doi: 10.3969/j.issn.1673-8926.2013.04.019

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Application of seismic attribute analysis technique to the identification of mudstone interbeds

GAO Lei，MING Jun，YAN Tao，ZHAO Haifeng，LI Bin   

  1. Research Institute of Exploration and Development，Tianjin Branch，CNOOC，Ti anjin 300452，China
  • Online:2013-10-08 Published:2013-10-08

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Abstract:

The development of mudstone interbeds affected the high-efficiency development of sand 4-1992 in Bozhong 26 oilfield of Bohai. In order to predict the lateral distribution of mudstone interbeds, we used the method of integrative analysis of strata slice and seismic attributes to study the interbeds genesis based on the fine analysis of interbeds geophysical response. Based on the different seismic attributes calculation methods for several experimental analyses, we optimized three kinds of seismic attributes: RMS amplitude, sum negative amplitude and energy half time. We used the method of seismic attributes cluster analysis to identify and depict the lateral distribution of interbeds. It is considered that mudstone interbeds in the study area are mainly developed in the central part of sand body and presents unstable transverse distribution characteristics. This research idea has certain referential significance for identifying and characterizing the interbeds in complex fault block oilfield, and can provide technical assurance for the efficient development of similar oilfields.

Key words: reservoir differences, karstification, fluid, Yingshan Formation, northern slope of Tazhong

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