地质论评2018，Vol.64Issue(3)：764-776,13.DOI:10.16509/j.georeview.2018.03.020
鄂尔多斯盆地苏里格气田致密砂岩储层孔隙类型及其渗流特征
The Seepage Characteristics of Different Pore Types of Tight Sandstone Gas Reservoir——Taking the Southeast Area of Sulige Gas Field,Ordos Basin As an Example
摘要
Abstract
Objectives:In order to investigate the controlling factors of different pore structures in tight sandstone gas reservoirs and the difference of internal fluid seepage behavior. Methods:Study the reservoir pore types and percolation characteristics of He 8 reservoir in the southeast area of Sulige from qualitative to quantitative perspective respectively by cast thin section,conventional mercury injection nuclear magnetic resonance and gas—water relative permeability. According to the relative content of dissolution pores and intergranular pores, the reservoir can be divided into four categories: intergranular pore, dissolution pore— intergranular pore,intergranular pore— dissolution pore, dissolution pore, and also analyzed the movable fluid characteristics,gas—water relative permeability characteristics of the four kinds of reservoirs. Results:Diagenesis difference is the main factor leading to different pore structure types of reservoir. The pore structure of the reservoir with different pore types is significantly different. From intergranular pore dominant type to dissolution pore dominated reservoir, reservoir pore structure characteristics have obvious improvement trend, the saturation of movable fluid increases obviously, and the disturbance degree of gas and water gradually increases, the sensitivity of gas permeability on water saturation is also increasing. Conclusions: The type of intergranular pore and dissolution pore mixed reservoir is a widely developed reservoir type in the study area,the sedimentary microfacies play an important role in controlling the distribution of reservoirs in different pore types.关键词
致密砂岩气藏/孔隙类型/渗流特征/苏里格气田Key words
tight sandstone gas reservoir/pore type/seepage characteristics引用本文复制引用
盛军,徐立,王奇,阳成,丁晓军,刘燕妮..鄂尔多斯盆地苏里格气田致密砂岩储层孔隙类型及其渗流特征[J].地质论评,2018,64(3):764-776,13.基金项目
本文为国家科技重大专项资助项目——大型油气田及煤层气开发(编号:2011ZX05044)的成果.This paper is the Achievements of the project of large oil/gas fields and coal bed gas development in national science and technology project(2011ZX05044) （编号:2011ZX05044）
