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《Progress in Geophysics》 2012-01
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Classification and conventional logging identification of inhomogeneous reservoir in DB gas field

HAN Xue-hui1,CUI Yu-feng1,LI Feng-bi1,ZHI Le-fei2(1.School of Earth Science & Technology,China University of Petroleum,Shandong,Qingdao,266555 China; 2.Dongsheng Group CO.LTD.of Shengli Oilfield,Dongying 257000,China)  
Reservoir in DB gas field is mainly fracture-porosity type and porosity type.It has strong nonuniformity in this field.The degree of fractures development is one of the key factors in decision hydrocarbon productivity.Based on logging data,core analysis data,geology data and well logging data of reservoir,the methods are developed for reservoir classification and conventional logging identification.First,productivity index per meter is defined as standardized productivity parameter.Second,based on the relationship between productivity parameter and reservoir physical properties,comprehensive physical properties parameter(the product of pore and permeability)is used as evaluation criterion of reservoir levels.The reservoir in DB gas field is thus classified into 2 levels,and the physical properties classification standard is provided.Last,comprehensive principle components are calculated using principle component method.Based on the cross plot of comprehensive principle components vs productivity index per meter,reservoir classification standard developed by conventional logging is established.The application on 2 wells shows that the results of classification and identification reservoir level agree with the production.
【Fund】: 山东省自然科学基金项目Y2008E08资助
【CateGory Index】: P631.84;P618.13
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