| 高温高压CO2/原油界面张力及对驱油效率影响 |
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| 引用本文： | 王海涛,王锐,伦增珉,吕成远,骆铭,赵春鹏,潘伟义.高温高压CO2/原油界面张力及对驱油效率影响[J].科学技术与工程,2017,17(34). |
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| 作者姓名： | 王海涛 王锐 伦增珉 吕成远 骆铭 赵春鹏 潘伟义 |
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| 作者单位： | 页岩油气富集机理与有效开发国家重点实验室,页岩油气富集机理与有效开发国家重点实验室,页岩油气富集机理与有效开发国家重点实验室,页岩油气富集机理与有效开发国家重点实验室,页岩油气富集机理与有效开发国家重点实验室,页岩油气富集机理与有效开发国家重点实验室,页岩油气富集机理与有效开发国家重点实验室 |
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| 基金项目： | 国家自然科学基金（批准号：51504283） |
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| 摘 要： | 在油藏温度下,采用ADSA(axisymmetric drop shape analysis)技术测定了不同压力下CO_2/原油动态界面张力和平衡界面张力。界面张力实验发现:原油与超临界CO_2接触的初始阶段存在强烈的扩散作用,原油中的轻质组分被超临界CO_2溶解抽提,并且随着压力的增加,这种溶解抽提作用增强;实验压力范围内,动态界面张力经过25~50 s左右可以达到一稳定值,当P≤19.998 MPa时,动态界面张力曲线波动较大,而当P≥19.998 MPa时,动态界面张力曲线基本保持不变。驱替实验结果表明:CO_2原油体系的平衡界面张力与气驱采收率之间存在关联关系:(1)随着压力升高,体系的平衡界面张力降低,气体突破时的驱油效率和气驱最终驱油效率升高;(2)压力增加到一定值后,体系平衡界面张力降低幅度减小,两种驱油效率增加的幅度也减小;(3)随着压力升高,气驱最终驱油效率与气体突破时的驱油效率之差增大。
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| 关 键 词： | ADSA CO[sub_s]2[sub_e] 界面张力 驱油效率 |
| 收稿时间： | 2017/4/7 0:00:00 |
| 修稿时间： | 2017/5/22 0:00:00 |
Interfacial tension and oil displacement efficiency between CO2 and crude oil under high temperature and high pressure |
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| Haitao Wang,Rui Wang,Zengmin Lun,Chengyuan Lv,Ming Luo,Chunpeng Zhao and Weiyi Pan.Interfacial tension and oil displacement efficiency between CO2 and crude oil under high temperature and high pressure[J].Science Technology and Engineering,2017,17(34). |
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| Authors: | Haitao Wang Rui Wang Zengmin Lun Chengyuan Lv Ming Luo Chunpeng Zhao and Weiyi Pan |
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| Affiliation: | State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development |
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| Abstract: | |
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| Keywords: | ADSA CO2 interfacial tensions displacement efficiency |
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