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车排子地区石炭系火山岩地震相特征The Characteristics of Seismic Facies of Carboniferous Volcanic in Chepaizi Area
王兆雷, 张吉辉, 邓西里
石炭系, 火山岩, 岩相, 地震相Carboniferous, Volcanic, Facies, Seismic Facies
《Advances in Geosciences》, Vol.5 No.4, 2015-08-11
The volcanic reservoir space in carboniferous of Chepaizi area is mainly controlled by facies, and different facies have different types of cracks and pores. By the study of the characteristics of seismic facies of volcanic rocks, it can fine identify the volcanic facies, thus fine describing volcanic bodies. By the analysis of seismic facies of drilling in the research area, we summarized that the high-yield wells in carboniferous are characterized as follows: high-yield wells subfacies are mainly near the crater; the occurrence of the volcanic and the interface of the formation constitute a “reversed roof” mode; the multiperiodic volcanism characteristics are obvious; weathering crust reservoir is developed; and the reservoir and caprock have a favorable combination.