【摘要】 通过岩心观察、薄片鉴定、物性分析和扫描电镜观察等技术手段,研究了该地区新安村组碎屑岩储层的岩石学特征、孔隙结构、储层物性及影响因素。研究结果表明,储层岩石类型主要为岩屑砂岩及岩屑长石砂岩,成分成熟度较低,结构成熟度中等。粘土矿物以高岭石为主,伊利石次之。孔隙类型主要有残余原生粒间孔、粒内溶孔、压裂隙和微裂隙四种。孔喉以微细喉和特细喉为主,孔隙的连通性较差。储层孔隙大小分布不均,具有低孔、特低渗特性。沉积环境和成岩作用是影响储层物性的主要因素。更多还原

【Abstract】 With core observation,thin section analysis,physical property analysis and scanning electron microscope observation,lithology characteristics,pore structure,physical properties and influence factors of clastic reservoir of Xin An Cun formation in this area were studied. Studies show that the major parts of reservoir rock styles is made of volcaniclastic sandstone and volcaniclastic feldspar sandstone.Composi- tional maturation of the Houhe reservoir is low.The textural maturity is middle.Most parts of Clay minerals is Kaolinite,short parts of Clay minerals is illite.There are four kinds of pores,such as:remainder intergranular pore,secondarypore,micro-pore andmicro-fissure.Micro -fine throat and ultra-mini throat are major pore throats with little connectivity.The distribution of pores is odds,Reservoir characteristics are low porosity and ultra-low permeability.Sedimentary facies zone and diagenesis are major affecting factors.更多还原