可视装置中CO<sub>2</sub>与正戊烷或原油接触特征和表征方法

章星; 王珍珍; 王帅; 李芳; 刘红现

doi:10.11781/sysydz201703402

可视装置中CO₂与正戊烷或原油接触特征和表征方法

doi: 10.11781/sysydz201703402

1.
中国石油大学(北京)克拉玛依校区石油学院, 新疆克拉玛依 834000
2. 新疆油田公司采油一厂地质所, 新疆克拉玛依 834000
3. 新疆油田公司采油二厂地质所, 新疆克拉玛依 834000

基金项目: 国家科技重大专项项目（2011ZX05023-003）资助。

详细信息

作者简介:
章星(1984-),男,博士,讲师,从事油气田开发研究。E-mail:zhangxingchina@126.com。

中图分类号: TE341
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- 被引次数: 0
出版历程
- 收稿日期: 2016-12-06
- 修回日期: 2017-03-30
- 刊出日期: 2017-05-28

Visual contact characteristics and characterization of the CO₂ and n-pentane/crude oil interface

1.
Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay, Xinjiang 834000, China
2. Geological Research Institute, No. 1 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
3. Geological Research Institute, No. 2 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China

摘要

摘要: CO₂混相驱油过程复杂，其中包括传质、对流和相变等问题，有些机理尚不明确，需要进行深入研究。采用联合研制的CO₂混相可视驱油实验装置，恒定不同的实验压力，研究CO₂在不同相态下与正戊烷、原油的垂直静态变化特征。CO₂和正戊烷、原油在不同压力下表现为不同的接触形态，正戊烷、原油相对高度-时间曲线为幂函数关系，低压时曲线也可为近似线性变化。提出了“溶解膨胀速率”，不同压力条件下CO₂-正戊烷、原油溶解膨胀速率随着时间变化呈减小趋势，变化曲线均为负对数关系；影响正戊烷、原油相对高度和CO₂-正戊烷、原油溶解膨胀速率的因素主要是压力和流体。
- 溶解膨胀速率 /
- 正戊烷 /
- 原油 /
- CO₂混相驱油 /
- 油田开发
Abstract: CO₂ miscible flooding is complex, including mass transfer, convection, phase transition and other issues. Some mechanisms are not clear and need in-depth study. The static characteristics of n-pentane or crude oil and CO₂ in different phases were studied by using a CO₂ miscible flooding visual device under different experimental pressures. CO₂ and n-pentane or crude oil show different contact characteristics under different pressures. The relationship between n-pentane or crude oil relative height and time is a power function, and the curve at low pressure can also be approximately linear. The dissolution swelling rate of CO₂ vs. n-pentane or crude oil under different pressure conditions shows a decreasing trend with time, and the curves are negative logarithmic. The factors influencing the relative height of n-pentane or crude oil and the dissolution swelling rate of CO₂ vs. n-pentane or crude oil are mainly pressure and fluid properties.
- dissolution swelling rate /
- n-pentane /
- crude oil /
- CO₂ miscible flooding /
- oil field exploration

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