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Study on production decline model after pattern infilling in low permeability reservoir

ZHANG Feng-lian1,HAN Ling-chun2,WANG Xiao-da3,HAN De-jin1,2 (1.China University of Geosciences,Beijing 100083,China;2.Exploration and Development Research Insitute of Daqing Oilfield Company Ltd.,Daqing 163712,China;3.Subsurface Resources Development Company of Daqing Oilfield,Daqing 163700,China)  
Arps decline curve is basic mathematic model used for studying oil/gas production decline rules,but it has disadvantage factors for production decline after well pattern infilling in low permeability reservoir.Based on basal reservoir engineering preciples and method of superposition,this paper presents a new mathematic method to analyze production decline curves.Using this method can improve greatly accuracy of production prediction and evaluate development effect after pattern infilling.It provides guidance evidence for further well pattern infilling.
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