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Title: Aqueous flooding methods for tertiary oil recovery

Abstract

A method of aqueous flooding of subterranean oil bearing formation for tertiary oil recovery involves injecting through a well into the formation a low alkaline pH aqueous sodium bicarbonate flooding solution. The flooding solution's pH ranges from about 8.25 to 9.25 and comprises from 0.25 to 5 weight percent and preferably about 0.75 to 3.0 weight percent of sodium bicarbonate and includes a petroleum recovery surfactant of 0.05 to 1.0 weight percent and between 1 and 20 weight percent of sodium chloride. After flooding, an oil and water mixture is withdrawn from the well and the oil is separated from the oil and water mixture.

Inventors:
 [1]
  1. (Bartlesville, OK)
Issue Date:
Research Org.:
IIT Research Institute (Chicago, IL)
OSTI Identifier:
866900
Patent Number(s):
4817715
Assignee:
IIT Research Institute (Chicago, IL) NETL
DOE Contract Number:  
FC22-83FE60149
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
aqueous; flooding; methods; tertiary; oil; recovery; method; subterranean; bearing; formation; involves; injecting; alkaline; ph; sodium; bicarbonate; solution; ranges; 25; comprises; weight; percent; preferably; 75; petroleum; surfactant; 05; 20; chloride; water; mixture; withdrawn; separated; ph range; oil bearing; sodium bicarbonate; tertiary oil; water mixture; sodium chloride; oil recovery; weight percent; subterranean oil; aqueous sodium; bearing formation; ph aqueous; petroleum recovery; alkaline ph; aqueous flooding; involves injecting; /166/507/

Citation Formats

Peru, Deborah A. Aqueous flooding methods for tertiary oil recovery. United States: N. p., 1989. Web.
Peru, Deborah A. Aqueous flooding methods for tertiary oil recovery. United States.
Peru, Deborah A. Sun . "Aqueous flooding methods for tertiary oil recovery". United States. https://www.osti.gov/servlets/purl/866900.
@article{osti_866900,
title = {Aqueous flooding methods for tertiary oil recovery},
author = {Peru, Deborah A.},
abstractNote = {A method of aqueous flooding of subterranean oil bearing formation for tertiary oil recovery involves injecting through a well into the formation a low alkaline pH aqueous sodium bicarbonate flooding solution. The flooding solution's pH ranges from about 8.25 to 9.25 and comprises from 0.25 to 5 weight percent and preferably about 0.75 to 3.0 weight percent of sodium bicarbonate and includes a petroleum recovery surfactant of 0.05 to 1.0 weight percent and between 1 and 20 weight percent of sodium chloride. After flooding, an oil and water mixture is withdrawn from the well and the oil is separated from the oil and water mixture.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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