石油钻采工艺2017，Vol.39Issue(3)：267-270,4.DOI:10.13639/j.odpt.2017.03.002
层状厚层油藏水驱效率预测模型
A prediction model of water flooding efficiency for layered thick reservoir
摘要
Abstract
The thick oil reservoir usually featured with strong heterogeneity, thick oil layer and large difference in reservoir physi-cal properties. Water flooding production of thick reservoir will be affected by heterogeneity, resulting in water cut rising rapidly and lowering oil recovery etc. So, prediction of water flooding efficiency is the key to develop the thick reservoir. Considering the fluid channeling and heterogeneity and introducing pseudo relative permeability function, and combined with Weldge-Craig water flooding theory, a method for calculating water flooding efficiency in thick oil reservoir was established. The reliability and practicability of the model were verified by the case calculation at site. Sensitivity analysis indicated that the larger the permeability variation coefficient and mobility ratio, the lower the crude oil displacement efficiency, which causes the poor development effect by water flooding. As for the water flooding development of layered thick reservoir, it is necessary to strengthen the understanding of reservoir heterogeneity vertically, perfect the injection and production well pattern, and increase the displacement efficiency, so as to improve water flooding recovery ratio of thick reservoir.关键词
水驱开发/厚层油藏/纵向非均质性/层内窜流/驱替效率/拟相对渗透率函数Key words
water flooding development/thick reservoir/heterogeneity/cross flow/water flooding efficiency/pseudo relative permeability function分类
能源科技引用本文复制引用
张瑾琳,吴向红,晋剑利,杨轩宇..层状厚层油藏水驱效率预测模型[J].石油钻采工艺,2017,39(3):267-270,4.基金项目
中国石油天然气集团公司课题"乍得厚油层岩性砂岩油藏注水开发技术"(编号:2016D-4402). （编号:2016D-4402）
