摘要
长庆油田某区块的沉积相是辫状河、曲流河亚相沉积,具有成分成熟度低、结构成熟度高的岩石学特征。孔隙类型为长石—原生粒间孔组合;物性特点为中孔,中—高渗透性,部分地区为低渗透层型;孔隙结构为大孔—中孔细吼型。影响储集性能的因素主要为两方面:储集性在平面上的分布主要受沉积相带的控制;纵向上的分布主要受成岩作用、构造作用和储层非均质性的影响。通过研究分析该区块致密储层,适合滑溜水压裂或者钻水平井进行分段体积压裂改造。
The sedimentary facies of a block in Changqing oilfield is braided and meandering river subfacies,which has the petrological characteristics of low composition maturity and high structure maturity.The pore type is feldspar-primary intergranular pore assemblage;the physical properties are medium pore,medium-high permeability,and low permeability in some areas;the pore structure is large pore-medium pore fine roar type.The main factors affecting reservoir performance are two aspects：the distribution of reservoir property in plane is mainly controlled by sedimentary facies zone;the vertical distribution is mainly affected by diagenesis,tectonics and reservoir heterogeneity.Through the study and analysis of the tight reservoir in this block,it is suitable for slip water fracturing or horizontal well fracturing.
作者
杨静雯
Yang Jingwen(School of petroleum engineering,Xi＇an Petroleum University,Xi＇an710065,China)
出处
《云南化工》
CAS
2018年第9期112-113,共2页
Yunnan Chemical Technology
基金
国家自然科学基金资助项目(51874242)
国家科技重大专项资助项目(2016ZX05050-009)
关键词
储层物性
沉积相
孔隙度
reservoir physical properties
sedimentary facies
porosity
