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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.
In order to better understand the characteristics of Putaohua reservoir in Da’anbei Oilfield and provide the basis for the exploration and development of Da’AnBei Oilfield, the authors analyzed the Dahua North oilfield Putaohua reservoir in detail by means of thin-section identification, X-ray diffraction and electron microscope analysis, The basic characteristics of rock. The results show that the main types of the Putaohua reservoir rock are fine sandstone, siltstone, middle sandstone, unequal sandstone and conglomerate. The main oil sandstone is siltstone and fine sandstone. The composition of the reservoir sandstone is magmatic Rocks, metamorphic rocks and sedimentary rocks, mainly magmatic rock cuttings and metamorphic rock cuttings. Therefore, it can be considered that most of the reservoir sandstone in the Putaohua Reservoir is feldspar lithic siltstone or feldspar cuttings fine sandstone; reservoir sandstone Of the main components of the caving are clay minerals and carbonate minerals. Because of the high content of argillaceous and calcareous, the reservoir sandstone has the characteristics of low porosity and low permeability. The main damage factors of the reservoir are speed Sensitive, Particle Transport, Acid Sensitive and Water Sensitive Damage.