Petroleum sulfonates

Details Petroleum sulfonates Petroleum sulfonates

C - Chemistry, Metallurgy

09

K

31/31, 260/504

C09K 8/584 (2006.01)

Patent

CA 1124259

ABSTRACT Petroleum sulfonates yielding improved results in enhanced oil recovery processes are comprised of a reaction product obtained from a mixture of a major proportion of a petroleum oil feed stock, such as a crude or a portion thereof, and a minor proportion of an additive, such as an oxygenated hydrocarbon, i.e., an oxo-alcohol or the like, reacted with SO3 under sulfonation conditions, mixed with about 0.5 to 20%(by reaction mixture weight) of water at the temperature in the range of about 50° to l50°C. for a relatively brief period of time and then neutralizing the resultant material with a base, such as NaOH. The neutralized petroleum sulfonated material thus obtained, which may or may not be extracted to remove unsulfonated organic material or salts, is then formulated into a slug for injection into an oil field for enhanced oil recovery.

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