摘要
对鄂尔多斯盆地横山双城地区长61低孔隙度低渗透率储层的形成原因,及优质储层的形成与分布规律研究发现,沉积物偏细、沉积物结构和矿物成熟度低、储层物性差、孔喉半径小、基质渗透率低、成岩差异大、应力敏感性强、裂缝比较发育以及宏观和微观上非均质性强是低渗透储层分布的最基本特征。通过对储层沉积、成岩现象的具体分析,判断微观非均质性的空间分布强弱,建立相应的低孔隙度低渗透率储层模式,为油藏勘探提供依据,以达到正确认识储层内部构型、寻找剩余油和提高采收率的目的。
the thin sediment, low textural maturity and compositional maturity, bad reservoir properties, low porosity and permeability, small pore throat size, great dif-ference of diagenesis, intense stress sensibility, developed fractures and strong heterogenei is basic character of the low--permeability reservoir＇s distributing ,after study on how the low--permeability reservoir come into being and the rule of high quality reservoir＇s distributing in Chang 61 reservoirs of HengshanShuangcheng area of Ordos Basin, Analysis on sediments, diagenesis and the phenomenon of water displacing oil,we estimate the degree of micro- anisotropy, and build the pattern of micro- anisotropy in reservoir, and offer the evidence for explore oil reservoir. At the end ,we can cognizance the internal structure of reservoir correct, search remaining oil and elevation recovery ratio.
出处
《内蒙古石油化工》
CAS
2008年第23期143-145,共3页
Inner Mongolia Petrochemical Industry
关键词
低渗透储层
微观非均质性
成岩作用
Low--permeability Reservoir
Micro--anisotropy
Diagenesis
