Santanghu Basin Malang Depression Carboniferous System Harjiawu Formation Volcanic Reservoir Logging Evaluationg

With the development of global oil industry and the improving of the technique ingeophysical prospecting in recent years, Many diffirent various volcanic reservoir had beenfound both at home and abroad, and volcanic plays important roles in the hydrocarbonaccumulation process, More and more attention was paid on volcanic reservoir at boundariesof oil exploration, it has become a new fields of the increasing reserves of oil and gas in theinternational oil and gas exploration.This subject is base on volcanic rock petrophysics research at Santanghu basin Malangdepression carboniferous system Harjiawu formation. Developing researchon reservoircombine data of coring well and logging data characteristics, to make clear the lithology,Physical Properties and reservoirs characteristics of the volcanic in Santanghu basin Malangdepression carboniferous system Harjiawu formation; Using the logging data of reservoir coresamples in the research area, by using of intersection graphs recognize lithology of volcanic,build the model of log interpretation reservoir parameter in the research area. Analyse the fourbehaviors relationship of reservoir of Harjiawu formation in the research area and loggingcomprehensive evaluating the reservoir. The results show that oil-bearing property ofvolcanics in Harjiawu formation volcanic breccias and basalt is best and andesite takes secondplace. All of C2h1-1,C2h1-2,C2h2-1at Harjiawu formation shows good reservoir property. C2h2-1,C2h2-2belongs to medium porosity and low permeability reservoir. Reservoir in C2h1-2,C2h2-1in the tectonic uplifting region Harjiawu formation which in northeast depression growswell,it may become Class Ⅱ and Ⅲ reservoir.