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应用地震储层学的理论、方法和技术对准噶尔盆地西北缘乌夏地区二叠系火山岩进行了研究。首先,明确了此类火山岩(熔结角砾凝灰岩)是裂隙式火山喷发的产物,其分布主要受早期火山口和火山喷发前古地貌的控制,储集空间以气孔为主;其次,采用本征值相干分析和古地貌恢复技术明确了火山口及喷发前古地貌特征;最后,综合利用测井、物探技术,对火山岩的有利岩性进行预测,形成了裂隙式喷发火山岩储层综合预测技术,并取得了较好的应用效果。
Permian volcanic rocks in Wuxia area on the northwestern margin of Junggar Basin are studied using the theory, methods and techniques of seismic reservoirs. First of all, it is clear that such volcanic rocks (sinter-brecciated tuff) are the products of fissure-type volcanic eruptions. Their distribution is mainly controlled by the early craters and volcanic eruptions before the eruption. The reservoir space is dominated by stomata. Secondly, The eigenvalue coherence analysis and palaeogeomorphology restoration technology have made clear the crater and pre-eruption palaeogeomorphological features. Finally, the comprehensive utilization of well logging and geophysical techniques to predict the favorable lithology of volcanic rocks has resulted in the comprehensive prediction of fissured eruptive volcanic reservoir , And achieved good results.