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Analyze interwell communication by rate correlation

WANG Zhi-guo1,ZHANG Ji-cheng1,SONG Kao-ping1,HUANG Xiao-lu2,ZHANG Xiao-hui3(1.Northeast Petroleum University,Daqing,Heilongjiang 163318,China;2.Daqing Oilfield Co.,Ltd.,PetroChina,Daqing,Heilongjiang 163000,China;3.Jilin Oilfield Company,PetroChina,Songyuan,Jilin 138000,China)  
In the process of oilfield development,a good understanding of interwell communication,water drive direction and breakthrough direction is the premise of formulating development plan and adjusting production measures.The rate correlation method of grey theory is applied to calculate the correlation degree between water injection and water/oil production,and to quantitatively describe interwell communication.This method avoids the tedious work of sedimentary microfacies study and numerical simulation,and overcomes the shortcoming of being affected by extreme value as in absolute correlation degree analysis.Application shows that rate correlation method is practicable.
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