摘要
通过铸体薄片分析、扫描电镜、岩芯粒度分析等技术和手段,应用储层沉积学、沉积岩石学、石油地质学等基本理论,对铁边城北地区长7油层组储层的岩石学特征、物性发育特征进行认真分析,认为铁边城北长7油层组砂岩储层主要发育岩屑质长石细砂岩,分选较好,磨圆度中等,结构成熟度中等,粒内孔隙为主,属于低孔特低渗储层,认为影响长7储层的主要控制因素是沉积作用与储层后期成岩作用。
This paper deals with petrologic characteristics, physical property and sedimentary characteristics of the Chang 7 reservoirs in the north of Tie Biancheng, Ordos based on thin section observation, SEM, granulometric analysis. The Chang 7 reservoirs is mainly composed of well-sorted and well-sorted fine-grained lithic arkose characterized by medium maturity and intergranular pore. The reservoir characteristics are controlled by sedimentation and late diagenesis.
出处
《四川地质学报》
2012年第4期432-436,共5页
Acta Geologica Sichuan
关键词
储层
特征
长石细砂岩
铁边城北地区
north of Tiebiancheng
reservoir characteristics
fine-grained lithic arkose
