摘要
根据铸体薄片、扫描电镜、高压压汞、恒速压汞、核磁共振等分析和化验资料,研究三塘湖盆地牛圈湖区块齐古组、头屯河组砂岩储层特征,结果表明:该套储层岩性为岩屑砂岩,成分和结构成熟度都偏低;储集空间以粒间孔和溶蚀孔为主;储集性能差到中等,原始产能低,非均质性强。结合生产动态状况,选用喉道半径、有效孔隙度、可动流体饱和度、启动压力、孔喉半径比等低渗透储层评价新参数将齐古组、头屯河组储层划分成3类,分类结果适合地区实际。
This article analyzes the sandstone reservoir characteristics of Qigu Formation and Toutunhe Formation in Niuquanhu Area of Santanghu Basin based on the data of cast sections, scanning electron microscope, high pressure mercury penetration, mercury penetration of constant speed,nuclear magnetic resonance. The study results show that the reservoir lithology is lithic sandstone. The pore space is mainly the intergranular pores and denudation pores. The reservoir property is from poor to middle. It has a poor original productivity and strong heterogeneity. The sandstone reservoirs of Qigu Formation and Toutunbe Formation can be divided into three types according to the low-permeability reservoir evaluation parameters, such as throat radius, active porosity, movable fluid saturation, actuating pressure and pore throat ratio. The divided result is fit for the actual situation combined with the production performance in the region.
出处
《断块油气田》
CAS
北大核心
2009年第2期5-8,共4页
Fault-Block Oil & Gas Field
基金
国家科技支撑计划“低(超低)渗透油田高效增产改造和提高采收率技术与产业化示范”(2007BAB17B00)资助
关键词
储层评价
低渗透储层
孔隙结构
三塘湖油田
齐古组
头屯河组
reservoir evaluation, low-permeability reservoir, pore structure, Santanghu Oilfield, Qigu Formation, Toutunhe Formation
