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Title: Enhanced oil recovery method using surfactant compositions for improved oil mobility

Abstract

This patent describes a surfactant composition useful for coacting with an emulsion in a petroleum reservoir which includes at least two surfactant components, one of the components being an anionic surfactant and the other of the components being a nonionic polyether surfactant which is selected from among polyol ethers, polyol esters and phenolic resins, wherein the anionic surfactant comprises an alpha olefin sulfonate dimmer having from 15 to 45 carbon atoms, wherein the ratio of the components is selected to reduce the viscosity of an emulsion in a petroleum reservoir to near, or less than, the viscosity of the oil phase alone and wherein the anionic surfactant component is from 30 to 70 weight percent of the total surfactant composition.

Inventors:
Publication Date:
OSTI Identifier:
5187756
Patent Number(s):
US 5110487; A
Application Number:
PPN: US 7-622197
Assignee:
Chevron Corp., San Francisco, CA (United States)
Resource Type:
Patent
Resource Relation:
Patent File Date: 5 Dec 1990
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; DRILLING FLUIDS; CHEMICAL COMPOSITION; OIL WELLS; ENHANCED RECOVERY; EMULSIONS; PETROLEUM; SURFACTANTS; VISCOSITY; COLLOIDS; DISPERSIONS; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUELS; WELLS; 020300* - Petroleum- Drilling & Production

Citation Formats

Current, S P. Enhanced oil recovery method using surfactant compositions for improved oil mobility. United States: N. p., 1992. Web.
Current, S P. Enhanced oil recovery method using surfactant compositions for improved oil mobility. United States.
Current, S P. 1992. "Enhanced oil recovery method using surfactant compositions for improved oil mobility". United States.
@article{osti_5187756,
title = {Enhanced oil recovery method using surfactant compositions for improved oil mobility},
author = {Current, S P},
abstractNote = {This patent describes a surfactant composition useful for coacting with an emulsion in a petroleum reservoir which includes at least two surfactant components, one of the components being an anionic surfactant and the other of the components being a nonionic polyether surfactant which is selected from among polyol ethers, polyol esters and phenolic resins, wherein the anionic surfactant comprises an alpha olefin sulfonate dimmer having from 15 to 45 carbon atoms, wherein the ratio of the components is selected to reduce the viscosity of an emulsion in a petroleum reservoir to near, or less than, the viscosity of the oil phase alone and wherein the anionic surfactant component is from 30 to 70 weight percent of the total surfactant composition.},
doi = {},
url = {https://www.osti.gov/biblio/5187756}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 05 00:00:00 EDT 1992},
month = {Tue May 05 00:00:00 EDT 1992}
}