Lithologic Reservoirs ›› 2007, Vol. 19 ›› Issue (2): 93-96.doi: 10.3969/j.issn.1673-8926.2007.02.019

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Using seismic attributes to identify channel sand body

CAO Qingrong1,LI Pei2,SUN Kai1,LI Nan1   

  1. 1. Research Institute of Petroleum Exploration & Development,Jilin Oilfield Company,PetroChina,Songyuan 138001,China;
    2. Institute of Geosciences of Xinmu Oil Production Plant,Jilin Oilfield Company,PetroChina,Songyan 131106,China
  • Online:2007-06-15 Published:2007-06-15

Abstract:

Lithologic reservoir has been the main reservoir type in shallow and middle strata exploration in southern Songliao Basin,but the identification of channel sand body is stilla challenge for the geophysical researchers for a long time.On the basis of 3D seismic newly finished in Chahuagan area and the new idea of“searching for river rather than sand,then river for sand”,calibrating the target is to carry out the interpretation accurately. Using seismic attributes analysis technique to divide seismic facies and identify the stream channel in order to find out the channel sand body was carried out.The results howed that it is possible to identify the stream channel by using the seismic attributes under the semi-shallow and shallow lake sedimentary environments,and that the lateral information ofthe seismic data supports the vertical resolution.This technique makes a high oil production.

Key words: hydrocarbon heterogeneous distribution , reservoir heterogeneity , lithologic hydrocarbon reservoirs , complex hydrocarbon reservoirs , theory of hydrocarbon accumulation

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