Reducing the minimum miscibility pressure of CO2 and crude oil using alcohols
Reducing the minimum miscibility pressure of CO2 and crude oil using alcohols
复制标题
使用醇降低二氧化碳和原油的最小混溶压力
DOI：
10.1016/j.colsurfa.2019.02.004
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发表时间：
2019-05
期刊：
影响因子：
--
通讯作者：
Juan Zhang
中科院分区：
文献类型：
--
作者：
Zihao Yang;Wei Wu;Zhaoxia Dong;Meiqin Lin;Shuwei Zhang;Juan Zhang
CO2与原油形成混相可显著提高CO2驱油效率。然而，CO2与原油之间的最小渗透压（MMP）通常高于地层破裂压力，如何降低CO2与原油之间的最小渗透压显得非常重要，相关研究较少。我们降低MMP的灵感来自于CO2在醇中独特的分散特性，醇的存在可能会降低原油的分子间力。本文采用可见高温高压电池，在343.15 K下，从7 MPa到20 MPa范围内，测量了CO2溶解度和添加多种醇（1-丁醇、1-戊醇和1-己醇）时油的体积膨胀。通过测定343.15 K时CO2与原油之间的界面张力（IFT）（2 ~ 43.3 MPa），预测了CO2与原油之间的界面张力。结果表明，醇类的加入大大提高了CO2在原油中的溶解度，提高了原油的体积膨胀率。特别是正丁醇、正戊醇和正己醇按8：1：1（体积比）混合，在原油中加入5%（体积比）的混合醇，在345.15 K和19 MPa下CO2在原油中的溶解度提高了28.74%，原油在345.15 K和14 MPa下的体积膨胀系数也提高了4.45%。在原油中加入5%的醇类混合物后，CO2与原油之间的MMP降低了9.21%。本文的研究为三次采油领域降低CO2与原油间的MMP提供了一种新的技术。
The establishment of a miscible phase between CO2and crude oil can significantly improve CO2flooding efficiency. However, the minimum miscibility pressure (MMP) between CO2and crude oil is usually higher than the fracture pressure of the formation, how to reduce the MMP between CO2and crude oil is very important, and there are fewer related studies. Our inspiration for reducing MMP comes from the unique dispersion characteristics of CO2in alcohol, the intermolecular force of crude oil may decrease due to the existence of alcohols. In this paper, the CO2solubility and the oil volume expansion with adding a variety of alcohols (1-butanol, 1-pentanol and 1-hexanol) were measured by a visible high temperature and high pressure cell from 7 MPa to 20 MPa at 343.15 K. The MMP between CO2and crude oil is predicted by measuring the interfacial tension (IFT) between CO2and crude oil from 2 MPa to 43.3 MPa at 343.15 K. The results showed that the CO2solubility in crude oil and the oil volume expansion were greatly improved due to the addition of alcohols. Especially 1-butanol, 1-pentanol and 1-hexanol were mixed by 8:1:1(volume ratio), 5% (volume ratio) alcohols mixture was added to the crude oil, the CO2solubility in crude oil increased by 28.74% at 345.15 K and 19 MPa, and the volume expansion coefficient of crude oil also increased by 4.45% at 345.15 K and 14 MPa. It is encouraging to note that the MMP between CO2and crude oil decreases by 9.21% after adding 5% alcohols mixture into crude oil. This article is able to provide a new technique for reducing the MMP between CO2and crude oil in the field of enhanced oil recovery.
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DOI：
10.1016/j.colsurfa.2018.03.062
发表时间：
2018-07
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子：
--
作者：
M. Irfan;Teresa M. Bisson;E. Bobicki;F. J. Argüelles-Vivas;Zhenghe Xu;Qingxia Liu;T. Babadagli
通讯作者：
M. Irfan;Teresa M. Bisson;E. Bobicki;F. J. Argüelles-Vivas;Zhenghe Xu;Qingxia Liu;T. Babadagli
影响因子：
7.4
作者：
Barati-Harooni, Ali;Najafi-Marghmaleki, Adel;Mohammadi, Amir H.
通讯作者：
Mohammadi, Amir H.
影响因子：
--
作者：
M. Escrochi;N. Mehranbod;S. Ayatollahi
通讯作者：
M. Escrochi;N. Mehranbod;S. Ayatollahi
影响因子：
--
作者：
Dandina N Rao;J.I Lee
通讯作者：
Dandina N Rao;J.I Lee
中国准噶尔盆地低渗透油藏CO2封存及提高采收率潜力评价
影响因子：
5.3
作者：
Wang, Huan;Liao, Xinwei;Chen, Xiaoming
通讯作者：
Chen, Xiaoming