the development features of reservoir space are different in different lithofacies belts. in a word, around volcanic vent is favorable reservoir development position.
不同巖相带储集空间的发育特征不同,火山通道周围是有利储集层发育区。
there is a buried volcanic vent of 10000 years old in the xiaoshan district, whi ch is formed by tuffs resulting from multistage eruptions. this district was once a bay.
小山区域有距今1万余年前的掩埋火山口,小山的巖性为多期喷发的凝灰巖组成。
the upper subfacies of effusive facies and volcanic vent facies well developed in the middle area of huoshiling formation.