摘要
苏里格气田南区盒8^上段储层总体为特低孔超低渗砂岩储层。成岩作用是导致这种低孔低渗的重要因素之一,研究区盒8^上段主要的成岩作用有机械压实作用、溶蚀作用、胶结作用和交代作用。埋深大、压实紧、原生孔少、溶蚀作用强是主要的特点。综合镜质体反射率、岩石热解、粘土矿物及自生矿物特征,判定该区盒8^上储层主要处于中成岩期B阶段,局部处于晚成岩期。
The tight sandstone reservoir in the 8th member of lower Shihezi formation in Southern Sulige gas field shows the general characteristic of extra-low pore and ultra-low permeability. Diagenesis is one of the important factors which lead to this result. The main diagenesis includes mechanical compaction, cementation, dissolution and metasomatism in the study area. And the obvious features are deep buried depth, tight compaction, rare primary porosity and strong dissolution. In this paper,vitrinite reflectance, rock pyrolysis, characteristics of clay mineral and authigenic mineral were analyzed, it＇s pointed out that diagenetic stage should be in B period of middle diagenesis and local area should be in late diagenesis stage.
出处
《辽宁化工》
CAS
2016年第7期939-941,共3页
Liaoning Chemical Industry
关键词
苏里格气田南区
盒8^上段
成岩作用
成岩演化阶段
southern Sulige gas field
the 8th member of lower Shihezi formation
diagenesis
diagenetic stage
