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利用火成岩岩心的观察和镜下鉴定方法，结合地震、钻井等资料，从火成岩体的分布、火成岩储层岩石学特征、储集空间类型及其分布规律等方面，对沈家铺区块孔一段火成岩储层的特征进行了研究。识别出火山喷发岩和浅成侵入岩两种火成岩类型，它们分别发育于孔西断层的下降盘和上升盘。火成岩储集空间主要有孔隙和裂缝两大类，进一步分为气孔、杏仁体内孔、晶间孔、晶内孔、溶蚀孔、构造裂缝、成岩裂缝、风化裂缝等８种类型，它们的分布主要受火成岩类型和断裂活动改造的控制
Based on the observation of igneous rock core and microscopic identification method and the data of seismic and drilling, the distribution of igneous rock body, the petrological characteristics of igneous rocks, the types of reservoir space and their distribution are analyzed. The characteristics of igneous reservoirs have been studied. Two types of igneous rocks, volcanic eruptions and shallow intrusive rocks, have been identified. They are respectively developed on the descending plate and the ascending plate of the Kongxi Fault. There are mainly two types of igneous reservoirs, such as pores and cracks, which are further divided into eight types: stomata, almond body pores, intergranular pores, intragranular pores, dissolution pores, structural fractures, diagenetic fractures and weathering fractures. Their distribution mainly Controlled by transformation of igneous rocks and faulting