特种油气藏2024，Vol.31Issue(1)：87-93,7.DOI:10.3969/j.issn.1006-6535.2024.01.011
超稠油油藏热化学驱油水渗流特征
Study on Oil and Water Flow Characteristics of Thermochemical Flooding in Ultra-Thick Oil Reservoirs
摘要
Abstract
Oil-water flow characteristics in different temperature regions are unknown during the thermochemical flooding in ultra-heavy oil reservoirs.The effects of hot water and oil displacement agents on oil displacement effi-ciency and the change rule of relative permeability at different temperatures were quantitatively investigated,and the impact of hot water and oil displacement agents on the oil flooding and their interaction were analyzed by using microscopic visualization experiments and one-dimensional physical simulation experiments.The experimental re-sults show that the oil phase relative permeability increases in high-temperature oil displacement agent flooding when the temperature is 70℃,and the water phase relative permeability changes are negligible when the tempera-ture is 150℃,the synergistic effect of hot water and oil displacement agent is more significant,and the relative permeability of the oil phase and water phase increases significantly under high-temperature oil displacement agent flooding after hot water flooding and direct high-temperature oil displacement agent flooding;the role of oil dis-placement agent weakens at the high-temperature restriction,and the hot water significantly enhances the oil dis-placement efficiency after the temperature is more than 200℃.The oil displacement efficiency of the oil displace-ment agent increases first and then decreases After the temperature exceeds 200℃.Thermochemical flooding can realize the beneficial development of ultra-heavy oil reservoirs through the successive driving and synergistic action of hot water and oil displacement agents in different temperature regions.This study can provide a reference for thermochemical flooding to enhance the recovery of ultra-heavy oil reservoirs.关键词
超稠油/热水驱/热化学驱/驱油机理/渗流特征Key words
ultra-heavy oil/hot water flooding/thermochemical flooding/oil diplacement mechanism/flow char-acteristics分类
能源科技引用本文复制引用
孙宝泉,杨勇,吴光焕,赵红雨,张民,孙超,张贺捷..超稠油油藏热化学驱油水渗流特征[J].特种油气藏,2024,31(1):87-93,7.基金项目
国家自然科学基金"难采稠油多元热复合高效开发机理与关键技术基础研究"(U20B6003) （U20B6003）
中国石化股份公司科研课题"深层稠油多元热复合提高采收率技术研究与应用"(P21037-3) （P21037-3）
