Prediction of the Secondary Porosity Zone of Fuyu Oil Layer in the 〖JZ〗West of Daqing Placanticline

Key words: 
• diagenesis /
• organic acid /
• corrosion /
• fault /
• overpressure /
• the secondary porosity

Abstract: In order to find the reservoir which develop the secondary porosity in the context of generally low porosity and low permeability, on the basis of the analysis of contributing factor of secondary porosity and diagenesis research of the reservoir, Combined impact of the formation of secondary porosity factors, we have predicted the porosity developed area of Fuyu oil layer in the West of Daqing placanticline. Research shows that secondary porosity in the region is mainly affected by the formation of carbonate and organic acids which come from Qingshankou group, and by the impact of fault controlled and overpressure, secondary porosity mainly distributed in the surrounding region of Qijia sag, Gulong sag and Longhupao terrace, some secondary porosity distributed in the western slope which developed by meteorological water eluviations.