Hydrocarbon recovery comprising injecting a slug comprising oil

Details Hydrocarbon recovery comprising injecting a slug comprising oil Hydrocarbon recovery comprising injecting a slug comprising oil

1990-01-12

1993-07-27

Geist, Gary L.

Compositions

Leather or fur treating

166274, 530502, E21B 4322

Patent

active

052308146

ABSTRACT:
A method of producing oil soluble surfactants from lignin is disclosed, along with a method for recovering oil from underground formations by means of a surfactant flooding system containing these lignin surfactants. Lignin is reduced in the presence of a carbon monoxide or hydrogen reducing agent at high temperature and pressure, alkoxylated with an .alpha.-olefin epoxide and then changed into oil soluble lignin surfactants by a reaction selected from the group consisting of sulfonation, sulfation and alkoxysulfation.

REFERENCES:
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patent: 3149085 (1964-09-01), Ball et al.
patent: 3763139 (1973-10-01), Falkehag
patent: 4731491 (1988-03-01), Urban et al.
patent: 4739040 (1988-04-01), Naae et al.
patent: 4781251 (1988-11-01), Naae et al.
Morrison & Boyd, Organic Chemistry, Boston, Allyn and Bacon Inc., 1973, p. 567.

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