华庆地区长6储层孔隙结构研究

应用岩矿分析技术、高压压汞技术,对华庆地区长6储层孔隙结构特征进行了研究。结果表明,研究区储层砂岩类型以岩屑长石砂岩和长石岩屑砂岩为主;储层岩石成分成熟度低,岩屑成分、填隙物成分都很复杂;孔隙类型以粒间孔、长石溶孔和岩屑溶孔为主,面孔率较大;储层为典型的低孔、低渗、超低渗储层,分选中等-较差;储层孔隙结构总体具有细微孔喉的特点,孔隙形状较规则。

Pore structure research of Chang 6 reservoir in Huaqing area

Through application of rock-mineral analysis technology and high pressure mercury injection technology, the pore structure research of Chang 6 reservoir in Huaqing area has been carried out. The results indicate the sandstone types of the research area are mainly of lithic deldspar sandstone and feldspar lithic sandstone, with the characteristics of low compositional maturity and complex debris composition and filler content composition. The pore types are mainly of intergranular hole, feldspar dissolved pore and lithic dissolved hole, with bigger percent of area pores. The reservoirs are typical low porosity and low, ultra-low permeability, with good physical properties and medium-poor sorting. Generally, the pore structure has the characteristics of thin pore throat and regular pore shape.