Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1979-05-14
1983-01-25
Spear, Jr., Frank A.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
208188, C10G 3304
Patent
active
043702384
ABSTRACT:
The water content of a crude oil containing surfactant is reduced to less than 0.5 weight percent by first conventionally drying the crude oil to a water concentration less than about 10%, then contacting the crude oil with a low molecular weight alcohol to effect a phase separation into an aqueous layer and an oil layer, thereafter separating these layers to obtain a dried oil and an aqueous alcoholic surfactant solution. The alcohol can then be separated from the aqueous alcoholic surfactant solution. The recovered alcohol can be recycled through the system and the recovered surfactant can be reused in another micellar flood.
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"Analysis of Oil Soluble Sodium Petroleum Sulfonates", ASTM Procedure D855, from ASTM Standards for Petroleum Products, Part 18, 1/68.
Hummel Jack L.
Marathon Oil Company
Spear, Jr. Frank A.
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