关键词: 枣35断块, 火山岩储层, 裂缝, 岩相, 喷发期次, 储集空间

Abstract: The characteristics of volcanic reservoir were studied with some geological and logging methods.Zao 35 Block was classified into two lithofacies and four microfacies on the basis of lithology and log features of volcanic rock in this area.The eruption periods of volcanic rock in Zao 35 Block were marked off by clay beds and volcanic formation rhythm.There are four categories of reservoir spaces including 14 types which formed five relationships between reservoir spaces and flow paths.The pores and throat of volcanic reservoir in Zao 35 Block are relatively broad,and the properties of volcanic reservoir in this area were characterized by high porosity and permeability.Many factors controlled the reservoir features of volcanic rocks.The lithofacies and tectonic stress were specially discussed.

Key words: Zao 35 Block, volcanic reservoir, fracture, lithofacies, eruption period, reservoir spaces