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Title:
METHOD OF MANUFACTURE AND USE OF LARGE HYDROPHOBE ETHER SULFATE SURFACTANTS IN ENHANCED OIL RECOVERY (EOR) APPLICATIONS
Document Type and Number:
WIPO Patent Application WO/2011/037975
Kind Code:
A3
Abstract:
The present invention describes the method of making anionic ether sulfate surfactants by alkoxylation of a GA using PO and/or EO followed by a sulfation reaction. The GA of the present invention is made by a facile and inexpensive method that involves high temperature base catalyzed dimerization of a linear alcohol. The ether sulfate surfactants of the present invention find uses in EOR applications where it is used for solubilization and mobilization of oil and for environmental cleanup.

Inventors:
WEERASOORIYA UPALI P (US)
POPE GARY A (US)
NGUYEN QUOC P (US)
Application Number:
PCT/US2010/049784
Publication Date:
July 28, 2011
Filing Date:
September 22, 2010
Export Citation:
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Assignee:
UNIV TEXAS (US)
WEERASOORIYA UPALI P (US)
POPE GARY A (US)
NGUYEN QUOC P (US)
International Classes:
C07C29/34; C07C31/02; C07C303/02; C07C309/10; C09K8/584
Foreign References:
US5777183A1998-07-07
US7074753B22006-07-11
Other References:
VARADARAJ, R. ET AL.: "Fundamental interfacial properties of alkyl-branched sulfate and ethoxy sulfate surfactants derived from Guerbet alcohols. 1. Surface and instantaneous interfacial tensions", J. PHYS. CHEM., vol. 95, no. 4, 28 February 1991 (1991-02-28), pages 1671 - 1676
MINANA-PEREZ, M. ET AL.: "Solubilization of Polar Oils with Extended Surfactants", COLLOIDS AND SURFACES A : PHYSICOCHEMICAL AND ENGINEERING ASPECTS, vol. 100, 25 July 1995 (1995-07-25), pages 217 - 224
JAMALOEI, B. Y.: "Insight into the Chemistry of Surfactant-Based Enhanced Oil Recovery Processes", RECENT PATENTS ON CHEMICAL ENGINEERING, vol. 2, no. 1, 31 January 2009 (2009-01-31), pages 1 - 10
Attorney, Agent or Firm:
GARSSON, Ross, Spencer et al. (Bldg. 1 Suite 110,7004 Bee Cave Roa, Austin Texas, US)
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