石油与天然气化工Issue(6)：624-628,5.DOI:10.3969/j.issn.1007-3426.2013.06.016
界面消失技术确定注 CO2驱油混相条件
Determination of miscibility conditions by vanishing interfacial tension between CO2 and crude oil
彭宝仔 1张倩2
作者信息
- 1. 北京低碳清洁能源研究所
- 2. 中海油研究总院
- 折叠
摘要
Abstract
Injecting recovered CO2 from fuel gases into the reservoir crude oil at or near the condition of miscibility is one of the main methods to realize CO 2 sequestration and utilization . Minimum miscibility pressure (MMP) is often considered as a key parameter for the design of a gas injection project .In this paper ,the interfacial tension between CO2 and four kinds of reser-voir crude oil were measured by the pendant drop method at stratum temperature ,and the MMPs for the four kinds of reservoir crude oil were determined directly with visually observed miscibili-ty appearance as 24 .12 MPa ,24 .81 MPa ,26 .87 MPa and 31 .69 MPa ,respectively .At the same time ,the polynomial extrapolation method was also used to determine their MMPs .The results showed that the error of MMPs determined by polynomial extrapolation method was within 3% , and corresponding to lower error value at higher MMP .It indicated that MMP determined by vanishing interfacial tension had the advances of low error and cost ,convenience and easy opera-tio n .关键词
CO2/界面张力/驱油/混相/最小混相压力Key words
carbon dioxide/interfacial tension/oil displacement/miscible phase/minimum miscibility pressure分类
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彭宝仔,张倩..界面消失技术确定注 CO2驱油混相条件[J].石油与天然气化工,2013,(6):624-628,5.
