Dissolving capacity and volume expansion of carbon dioxide in chain n-alkanes

被引：0

作者：

Han, Haishui ^{[1
,2
]}

Yuan, Shiyi ^{[3
]}

Li, Shi ^{[1
,2
]}

Liu, Xiaolei ^{[4
]}

Chen, Xinglong ^{[1
,2
]}

机构：

[1] PetroChina Research Institute of Petroleum Exploration & Development, Beijing

[2] State Key Laboratory of Enhanced Oil Recovery, Beijing

[3] Science & Technology Management Department, CNPC, Beijing

[4] Institue of Porous Flow & Fluid Mechanics, Chinese Academy of Sciences, Langfang

来源：

Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development | 2015年 / 42卷 / 01期

关键词：

Carbon dioxide; CCE experiment; n-alkanes; Solubility; Volume swelling;

D O I：

10.11698/PED.2015.01.11

中图分类号：

学科分类号：

摘要：

Five kinds of n-alkanes, which have high proportions in crude oil from China, were mixed with CO2 of different molar fractions forming oil-gas systems. The dissolution of CO2 in the five n-alkanes and the system volume swelling were studied through the constant component expansion (CCE) experiments in different temperatures. The pressure-volume curves of the n-alkanes-CO2 systems are not strictly two-part straight lines. The bending degree is affected by the parameters of temperature, pressure, CO2 molar fraction and n-alkanes. Saturation pressure and the temperature of the oil-CO2 system is a linear relationship. Besides, as the CO2 fraction increases, the saturation pressure goes up largely. There is a fact that the CO2 solubility in different kinds of alkanes is nearly the same in low pressure condition, while the solubility is inversely proportional to the carbon number in high pressure. The dissolution of CO2 may swell the system, and temperature and pressure are not the main reasons. However, the swelling factor increases quickly as the CO2 molar fraction goes up, and lowers with the carbon number increase. The oil swelling has a great significance for oilfield development and well production. ©, 2015, Science Press. All right reserved.

引用

页码：88 / 93

页数：5

共 13 条

[1]

Yang C., Yue Q., Shen P., Enhance Oil Recovery by Miscible Flooding, pp. 26-102, (1991)

[2]

Shen P., Liao X., Geological Storage and Enhanced Oil Recovery, pp. 128-161, (2009)

[3]

Whorton L.P., Brownscombe E.R., Dyes A.B., Method for producing oil by means of carbon dioxide

[4]

Dong M., Huang S.S., Srivastava R., A laboratory study on near-miscible CO2 injection in Steelman reservoir, JCPT, 40, 2, pp. 53-61, (2001)

[5]

Xie S., CO2 flooding experiment in laboratory for Daqing oilfield, Petroleum Geology & Oilfield Development in Daqing, 10, 4, pp. 32-35, (1991)

[6]

Wang L., Guo T., High pressure viscosity measurement of Jianghan reservoir oil and its carbon dioxide injected system, Journal of the University of Petroleum, China: Edition of Natural Science, 18, 4, pp. 125-130, (1994)

[7]

Yang S., Wang L., He J., Et al., Oil production enhancing mechanism and field applying result of carbon dioxide huff-puff, Journal of Xi'an Shiyou University: Science & Technology Edition, 19, 6, pp. 23-26, (2004)

[8]

Nematilay E., Taghikhani V., Ghotbi C., Measurement and correlation of CO2 solubility in the systems of CO2/Toluene, CO2/benzene, and CO2/n-hexane at near-critical and supercritical conditions, Journal of Chemical & Engineering Data, 51, 6, pp. 2197-2200, (2006)

[9]

Wagner Z., Wichterle I., High-pressure vapor-liquid equilibrium in systems containing carbon dioxide, 1-hexene, and n-hexane, Fluid Phase Equilibria, 33, 1, pp. 109-123, (1987)

[10]

Lay E.N., Measurement and correlation of bubble point pressure in (CO2 + C6H6), (CO2 + CH3C6H5), (CO2 + C6H14), and (CO2 + C7H16) at temperatures from 293.15 to 313.15 K, Journal of Chemical & Engineering Data, 55, 1, pp. 223-227, (2010)

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