A开发区扶余油层微观孔隙结构特征研究

The Microscopic Pore Structural Characteristics of Fuyu Reservoir in A Development Zone Area

通过普通薄片、铸体薄片、扫描电镜、X衍射和高压压汞等技术对扶余油层储层样品进行测试分析,研究了A开发区扶余油层微观孔隙结构特征。研究表明,A开发区扶余储层主要为细粒长石岩屑砂岩,岩石成分成熟度低,岩石粒径小;孔隙类型为原生粒间孔和少量粒内孔,孔隙结构以低孔微细喉为主,渗透率与孔喉半径相关性较好。

Through thin sections,cast thin sections,scanning electron microscope,X-ray diffraction and high pressure mercury injection and other technology to test and analysis Fuyu reservoir samples,the microscopic pore structure characteristics of Fuyu reservoir in A Development Zone area are studied.Research shows that,Fuyu reservoir A Development Zone is mainly consisted of fine-grained feldspathic lithic sandstone.The rock compositional maturity is low and its particle size is small.Pore types are primarily intergranular pores and a small amount of intragranular pore.Pore structure are is mainly of low pore and micro-fine throat.The permeability and pore throat radius have a good correlation.