摘要
根据孔隙度、渗透率等资料,利用薄片观察、阴极发光和电镜扫描等技术,研究克拉玛依油田六中区克下组冲积扇砾岩储层成岩作用类型、阶段及成岩演化序列,划分成岩储集相.结果表明:压实作用、胶结作用、溶蚀作用和交代作用为研究区主要的成岩作用类型,其中溶蚀作用为改善储层性能的关键因素;研究区地层经历早成岩阶段A期、早成岩阶段B期,目前正处于中成岩阶段A期末,为原油生成阶段;储层孔隙空间演化与多种成岩作用关系密切,经过压实作用、胶结作用后保留下来的残余粒间孔,以及溶蚀作用形成的粒内溶蚀孔、粒间溶蚀孔为主要油气储存类型,微裂缝、裂隙为主要运移通道,储集性能主要受沉积和成岩作用控制.该研究结果为预测研究区剩余油分布、改善储层开发效果提供地质依据.
The study of alluvial fan conglomerate reservoir diagenesis,diagenetic stages and sequences of lower Kexia formation in Liuzhong area of Karamay oilfield uses the slice observation cathodoluminescence,electron microscopy scanning technology,combining with the porosity,permeability and other methods.The results showed that compaction,cementation,dissolution and metasomatism are the main diagenesis types in the target area,where dissolution is the key factor to improve the performance of reservoir.The stratigraphic of study area has experienced early diagenetic stage A stage,early diagenetic stage B,which is currently in the middle diagenetic stage A period,crude oil generation phase.Reservoir pore space evolution closely related to a variety of diagenesis.The residual intergranular pores after compaction and cementation,the formation of intergranular dissolution pores and intergranular corrosion holes are the major oil and gas storage types,micro-cracks and fissures are the main migration pathways.Reservoir performance is mainly controlled by sedimentary and diagenetic.The results of the study predict the remaining oil distribution in the study area,provide geological basis for improving reservoir development effect.
出处
《东北石油大学学报》
CAS
北大核心
2014年第3期31-41,7,共11页
Journal of Northeast Petroleum University
基金
国家科技重大专项(2011ZX05009-002)
中央高校基本科研业务费专项资金项目(2011PY0204)
关键词
储层特征
成岩作用
成岩阶段
成岩储集相
克下组
克拉玛依油田
reservoir characteristics
diagenesis
diagenetic stage
diagenesis facies
Kexia formation
Karamay oilfield
