The Study On Comprehensive Evaluation Method Of Heavy-oil Reservoir Log Data In Fine Reservoir Description

With the development of fine logging interpretation method and technologyin reservoir description,logging data comprehensive evaluation plays more andmore important role in oil exploratory development.But about logging fineinterpretation method and software development of heavy oil reservoir isseldomness,many oilfield have wealthy heavy oil resources in china. Heavy oilreservoir is considered as one of ten difficult geology problem to present loggingtechnology.How having comprehensive evaluation and develop correspondentinterpretation software by effective utilize logging,geology etc data, which havevery important value in heavy oil reservoir fine description.This paper choose Liaohe basin Shuyiqu du229 block super heavy oilreservoir as study object,synthesizing geology,core orientation analysis,loggingetc data analyse the block's stratum,structure,sediment character and welllogging response feature,analyzing heavy oil reservoir contributingfactor;slanting logging data adjustment,environmental correction,trend surfacestandardization pretreatment,the study of"four feature analyse"and effectivethickness chart of heavy oil reservoir;Complicate glutenite heavy oil reservoirlithology identification by optimun cut,cluster analyse and neural network mathmethod etc; preliminarily study heavyoil reservoir strata sequence interface bywavelet transformation,wavelet multi-sacle power spectral,R/S analyse,activityfunction;establishing logging twi-interpretation model of heavyoil reservoir bycalssify lithology and zone,the interpretation precision is satisfied with the demands of fine reservoir characterization.Further recognizing oil-water layer by crossplot,electrofacies method;analyzing heavyoil viscosity and temperature data,established heavyoil viscosityforecast model which based on earth surface crude viscosity.As a result thesestudy content settled the foundation for studying deeply heavyoil reservoirmechanism, strata sequence framework, reservoir geology model building,remaining oil distribution etc.