枣园油田沈家铺区块孔一段火成岩储层特征

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

CHARACTERISTICS OF IGNEOUS RESERVOIR IN THE FIRST MEMBER OF KONGDIAN FORMATION IN SHENJIAPU DISTRICT OF ZAOYUAN OIL FIELD

he core analysis and thin|section identification using polarization microscope, seismic sections and drilling data explanations are used to study on igneous rock. The characteristics of igneous reservoir in the first member of Kongdian Formation in Shengjiapu district are described, including the distribution of igneous rock, petrography of igneous reservoir, space types of igneous reservoir and their distribution laws. Two kinds of igneous rocks, namely volcanic rock and hypabyssal intrusive rock, have been recognized. They are distributed in the downthrow wall of Kongxi fault and its uplifted wall respectively. The reservoir space of igneous rock is mainly composed of pore and fracture. They are subdivided into gas bubbles, intra|amygdaloidal pore, intercrystalline pore, intracrystalline pore, solution pore, structural fracture, diagenetic fracture and weathering fracture. Their distributions are mainly controlled by the type of igneous rock and transformation of fault movement.=