成都理工大学学报（自然科学版）2018，Vol.45Issue(4)：501-505,5.DOI:10.3969/j.issn.1671-9727.2018.04.10
多孔介质中CO2驱油相态及驱替特征
Study on the phase behavior and displacement characteristics of CO2flooding in porous media
摘要
Abstract
Application of a set of visible PVT device,CT device and scanning electron microscope device to the study of phase change of miscible and immiscible flooding under the condition of different injection rates and different injection volume is carried out so as to provide visualized test results and to support the reliability of the critical miscible pressure predicting method.It shows that the change rules of the gas-liquid interface are as follows:interphase mass transfer －mass transfer enhancement－ violent mass transfer －miscibility.The study reveals that the miscible flooding is obviously better than the non-miscible phase displacement,and there is an optimal value of the injected volume.When the oil and CO2are miscible,they are almost the first contact miscibility.The miscible phase formed a piston displacement,increased the oil displacement efficiency and slowed down the gas fingering. Under the same conditions, Increasing CO2injection rate can not significantly improve the displacement efficiency,but decrease the gas breakthrough and displacement efficiency.关键词
相态变化/驱油效率/驱替特征/一次接触混相Key words
phase change/displacement efficiency/displacement characteristics/first contact miscibility分类
能源科技引用本文复制引用
李南,谭先红,田虓丰,吴昊,李西..多孔介质中CO2驱油相态及驱替特征[J].成都理工大学学报（自然科学版）,2018,45(4):501-505,5.基金项目
国家重点基础研究发展计划(973)项目(2011CB707305-005) （973）
国家科技重大专项(2011ZX05024-002-006). （2011ZX05024-002-006）
