摘要
通过对合川气田须二段储层常规物性分析、压汞、普通薄片、铸体薄片、扫描电镜等多种资料进行综合研究,阐述了储层特征、主要的成岩作用及其对储层物性的影响。须二段储集砂岩所经历成岩作用使原生孔隙几乎全部被破坏,主要储集空间为次生溶蚀孔隙。须二段为特低渗储层,其形成的主要原因为压实作用和胶结作用。溶蚀作用和破裂作用对储层储集性能的改善起到了积极作用。
The diagenesis and its effect on reservoir physical property of Hechuan Gas Field were studied by using of physical property analysis,mercury injection experiment,thin section appraisal,and scanning electron microscope.The reservoir space was mainly of secondary dissolution pore because of destruction of primary pore caused by diagenesis of T3x2 reservoir.It was characterized by ultra-low permeability,which was formed through compaction and cementation,improved by denudation and cataclasis.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2011年第6期166-169,12,共4页
Journal of Oil and Gas Technology
关键词
合川气田
孔隙类型
成岩作用
须家河组二段
储层物性
Hechuan Gas Field
pore type
diagenesis
T3x2 reservoir
reservoir physical property
