吉林大安北油田葡萄花储层岩石基本特征

为了更好地认识大安北油田葡萄花储层特性，并为大安北油田勘探开发提供依据，通过薄片鉴定、Ｘ射线衍射分析和电镜分析等研究手段，详细分析研究了大安北油田葡萄花储层岩石的基本特征．研究结果表明：葡萄花储层岩石类型主要有细砂岩、粉砂岩、中砂岩、不等粒砂岩和砂砾岩，含油砂岩以粉砂岩和细砂岩为主；组成储层砂岩的碎屑成分有岩浆岩、变质岩和沉积岩，主要以岩浆岩岩屑和变质岩岩屑为主，据此可以认为葡萄花油层储层砂岩大多为长石岩屑粉砂岩或长石岩屑细砂岩；储层砂岩的填隙物成分主要为各类粘土矿物和碳酸盐类矿物，由于储层岩石高含泥质和钙质，使储层砂岩具有低孔、低渗的特征；储层的主要损害因素为速敏、微粒运移、酸敏和水敏损害．

Petrologic Characteristics of Putaohua Reservoir in Daanbei Oil Field, Jilin

In order to well know the reservoir and provide a basis for the exploration and development of it, the characteristics of the reservoir are studied by means of thin section identification, X ray diffraction analysis and electron microscopy analysis techniques. The results show that the rock types of the reservoir are fine sandstone, silt sandstone, mesograin sandstone, seriate sandstone and glutenite. Fine sandstone and silt sandstone are main oil bearing rock. The compositions of the reservoir debris are metamorphic rock, magmatic rock and a little of sedimentary rock. It can be deduced that the sandstone of the reservoir is mainly feldspar debris siltstone or feldspar debris fine sandstone. The major compositions of caulking material is clay minerals and carbonate minerals. The sandstone of the reservoir is characterized by low porosity and permeability because of its high mud and calcium contents. Velocity sensitivity, particle movement, water sensitivity and acid sensitivity are main damage factors of the reservoir.