Phase Behavior Analysis of CO2 and Formation Oil System

被引：1
|
作者：
Tang, Lei [1 ]
Zhang, Tongyao [1 ]
Li, Baogang [1 ]
Zhang, Lu [1 ]
Han, Dong [1 ]
机构：
[1] CNOOC EnerTech Drilling & Prod Co, Tianjin, Peoples R China
来源：
GEOFLUIDS | 2021年 / 2021卷
关键词：
D O I：
10.1155/2021/9985067
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
In this paper, there are nine oil samples to explore the characteristics of formation oil at different CO2 injection rate, and the characteristics include bubble point pressure, volume expansion coefficient, viscosity, density, and average molecular weight, composition of gas and liquid phase, and asphalt sediment. According to the experimental results of early nine oil samples of swelling tests, in high temperature and high pressure conditions, characteristics and changing rules of properties of formation oil, including bubble point pressure, volume expansion coefficient, viscosity, density, and average molecular weight, composition of gas and liquid phase, and asphalt sediment, were evaluated and analyzed at different CO2 injection rate systematically. The research not only can provide guides for petroleum engineers when they need to adjust the injection and production programs, but also can provide comparatively comprehensive experimental rules for researches on enhanced oil recovery (EOR) mechanisms of gas miscible and nonmiscible flooding. Moreover, phase parameters of different formation oil system can be extracted for reservoir numerical simulation.
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页数：6
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