Application of n, n-dialkylamides to reduce precipitation of...

Details Application of n, n-dialkylamides to reduce precipitation of... Application of n, n-dialkylamides to reduce precipitation of...

E - Fixed Constructions

21

B

E21B 37/06 (2006.01) C09K 8/524 (2006.01) E21B 43/16 (2006.01)

Patent

CA 2155512

A method of reducing, preferably preventing, precipitation of asphalt from crude oil. In one aspect crude oil is contacted in the borehole with at least one N,N-dialkylamide of a fatty acid having 8 to 22 carbon atoms. In a second aspect, precipitation is reduced during miscible flooding in an EOR process by adding to the flooding solvent at least one N,N-dialkylamide of a fatty acid having 8 to 22 carbon atoms.

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