地质科技情报2017，Vol.36Issue(3)：189-196,8.DOI:10.19509/j.cnki.dzkq.2017.0325
超低渗透储层孔隙结构对渗流特征的影响
Impact of Pore Structure on Seepage Characteristics in Ultra-Low Permeability Reservoir
摘要
Abstract
With oil-water relative permeability,micro-water flooding for real sandstone and nuclear magnetic resonance experiments,ultra-low permeability reservoir percolation characteristics of different diagenetic facies of Chang 6 in Heshui area are studied to understand diagenetic facies distribution and microscopic flow characteristics,especially the effect of pore structure on the flow capacity.In addition,the inherent relationship between micro-pore structure and seepage law was reflected on a series of test results,including the technology of constant-rate mercury intrusion and high pressure Hg injection,and oil-producing capacity.The study has revealed whether oil could be driven out depends on throat parameters of interconnected pores.The advantageous diagenetic facies has higher oil displacement efficiency with a large pore throat radius and effective throat volume.Seepage ability and oil displacement efficiency of adverse diagenetic facies reservoir are low with bigger pore throat ratio,narrower pore throat distribution and higer pore structure heterogeneity.关键词
渗流特征/孔隙结构/成岩相/超低渗透储层Key words
seepage characteristics/pore structure/diagenetic facies/ultra-low permeability reservoir分类
天文与地球科学引用本文复制引用
石亮亮,王磊,陈世栋,陈珂,王安成..超低渗透储层孔隙结构对渗流特征的影响[J].地质科技情报,2017,36(3):189-196,8.基金项目
国家科技重大专项“大型油气田及煤层气开发”(2011ZX05044) （2011ZX05044）
陕西省科技统筹创新工程(2011KTZB01-04-01) （2011KTZB01-04-01）
