Petroleum sulfonates

Details Petroleum sulfonates Petroleum sulfonates

1978-03-03

1979-12-04

Siegel, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505R, 252 855D, C07C13900, C09K 300

Patent

active

041772075

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 SO.sub.3 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.degree. to 150.degree. C. for a relatively brief period of time and then neutralizing the resultant material with an 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.

REFERENCES:
patent: 3887611 (1975-06-01), Sweeney

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