Capillary Number - Christopher Sparages: Difference between revisions

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==Capillary Number Theory==
==Capillary Number Theory==
[[Image:oil recovery capillary.jpg|thumb|upright=1|left|Figure 2: Shows the use of aquifers on and offshore being used for oil/gas recovery. The blue corresponds to injected carbon dioxide and the red corresponds to the recovered oil/gas. Reused from the Asia Pacific Economic Cooperation.<ref name="five"> Gerbis, M., Gunter, W. D., & Harwood, J. (n.d.). Introduction CO2 capture and geological storage in energy and climate policy. Global CCS Institute, Retrieved February 23, 2018, from https://www.globalccsinstitute.com/archive/hub/publications/114711/building-capacity-co2-capture-and-storage-apec-region.pdf.</ref>]]
 
The capillary number theory was originally developed by basing the idea off of capillary tube bundles and Darcy's law.<ref name="two">Guo, H., Dou, M., Hanqing, W., Wang, F., Yuanyuan, G., Yu, Z., Li, Y. (2017). Proper Use of Capillary Number in Chemical Flooding. Journal of Chemistry, 2017, 1-11. https://dx.doi.org/10.1155/2017/4307368</ref> Darcy's law predicts that residual oil will not be able to be moved until it reaches a critical capillary number. The goal of the experiments driving this theoretical discovery was to determine the saturation movement of this residual oil after it is in contact with water forcing imbibition, which is the expansion of solid when it absorbs water.<ref name="four">Ding, M., & Kantzas, A. (2004). Capillary Number Correlations for Gas-Liquid Systems. Canadian International Petroleum Conference, 46(2), 27-32. https://dx.doi.org/10.2118/2004-062
The capillary number theory was originally developed by basing the idea off of capillary tube bundles and Darcy's law.<ref name="two">Guo, H., Dou, M., Hanqing, W., Wang, F., Yuanyuan, G., Yu, Z., Li, Y. (2017). Proper Use of Capillary Number in Chemical Flooding. Journal of Chemistry, 2017, 1-11. https://dx.doi.org/10.1155/2017/4307368</ref> Darcy's law predicts that residual oil will not be able to be moved until it reaches a critical capillary number. The goal of the experiments driving this theoretical discovery was to determine the saturation movement of this residual oil after it is in contact with water forcing imbibition, which is the expansion of solid when it absorbs water.<ref name="four">Ding, M., & Kantzas, A. (2004). Capillary Number Correlations for Gas-Liquid Systems. Canadian International Petroleum Conference, 46(2), 27-32. https://dx.doi.org/10.2118/2004-062
</ref> Putting this theory to the test through experiments has made it possible for progress to be made in developing enhanced methods to contribute towards gas recovery operations. The capillary number is used for example in chemical flooding situations where a decrease in capillary number corresponds to a decrease in remaining oil saturation.<ref name="two" />
</ref> Putting this theory to the test through experiments has made it possible for progress to be made in developing enhanced methods to contribute towards gas recovery operations. The capillary number is used for example in chemical flooding situations where a decrease in capillary number corresponds to a decrease in remaining oil saturation.<ref name="two" />
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