大情字井油田157井区青三段储层孔隙特征研究  

Eq_3 Reservoir Porosity Characteristics of Wellblock Qian 157 in Daqingzijing Oilfield

作　　者：王安辉[1] 赵全军[1] 

机构地区：[1]中石油吉林油田分公司乾安采油厂,吉林松原138003

出　　处：《石油天然气学报》2011年第7期37-41,5,共5页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(40872099)

摘　　要：利用铸体薄片和扫描电镜资料,特别是运用了恒速压汞孔隙结构分析方法,对大情字井油田乾157井区青三段储层砂体低渗透储层孔隙结构进行了综合研究,重点讨论了孔隙类型、喉道特征、孔隙结构对渗透率的影响以及影响渗透率的主要因素。研究表明,孔隙类型以粒间孔和粒内孔为主;喉道类型可划分为孔隙缩小型喉道、收缩型喉道、片状或弯片状喉道和管束状喉道4类。渗透率的主控因素是喉道体积,其次喉道半径对渗透率有一定的影响,渗透率与孔隙关系不密切。The use of thin sections and electron scanning microscopy data,in particular the use of controlled mercury pore structure analysis method,the pore structures of Eq3 low-permeability sandstone reservoirs in Wellblock Qian 157 of Daqingzijing Oilfield were comprehensively studied,the pore type,the throat characteristics and influence of pore structure on the permeability controlling factors of reservoir permeability were emphatically studied.The results show that intergranular pore and intragranular types are dominated;throat type can be divided into narrow pore throat type,contractile throat,sheet or curved sheet and major controlling factor on permeability is the throat volume,throat radius has certain effect on permeability,but it is not closely related with porosity.

关 键 词：大情字井油田 青三段 孔隙类型 喉道特征 

分 类 号：P618.13[天文地球—矿床学]