http://lakm.us/thesit computer science research log in semi microbloging style Tue, 24 Aug 2010 21:34:55 +0000 http://wordpress.org/?v=2.9 en hourly 1 http://lakm.us/thesit/127/surfactants-may-also-cause-problems-at-l/ http://lakm.us/thesit/127/surfactants-may-also-cause-problems-at-l/#comments Fri, 01 Jan 2010 14:59:02 +0000 Arif http://xp-racy.lan/s2/?p=127 Surfactants may also cause problems at later stages of oil processing. In some cases, especially where the extracted crude is recovered in the presence of a great deal of water, the presence of surfactants produces emulsions or microemulsions that must be broken and the water separated before further processing can occur. Naturally present surface-active materials in the crude plus any added surfactants can produce surprisingly stable emulsion systems. The petroleum engineer dilemma: (1) surfactants are necessary for efficient extraction, (2) but their presence produces difficult problems in subsequent steps.

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