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Title: Microbial enhanced oil recovery and compositions therefor

Abstract

A method is provided for microbial enhanced oil recovery, wherein a combination of microorganisms is empirically formulated based on survivability under reservoir conditions and oil recovery efficiency, such that injection of the microbial combination may be made, in the presence of essentially only nutrient solution, directly into an injection well of an oil bearing reservoir having oil present at waterflood residual oil saturation concentration. The microbial combination is capable of displacing residual oil from reservoir rock, which oil may be recovered by waterflooding without causing plugging of the reservoir rock. Further, the microorganisms are capable of being transported through the pores of the reservoir rock between said injection well and associated production wells, during waterflooding, which results in a larger area of the reservoir being covered by the oil-mobilizing microorganisms.

Inventors:
 [1]
  1. Bartlesville, OK
Publication Date:
Research Org.:
IIT Research Institute (Chicago, IL)
OSTI Identifier:
867287
Patent Number(s):
US 4905761
Assignee:
IIT Research Institute (Chicago, IL)
DOE Contract Number:  
FC22-83FE60149
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
microbial; enhanced; oil; recovery; compositions; method; provided; combination; microorganisms; empirically; formulated; based; survivability; reservoir; conditions; efficiency; injection; presence; essentially; nutrient; solution; directly; bearing; waterflood; residual; saturation; concentration; capable; displacing; rock; recovered; waterflooding; causing; plugging; transported; pores; associated; production; results; larger; covered; oil-mobilizing; recovery efficiency; oil bearing; oil recovery; enhanced oil; residual oil; reservoir rock; microbial enhanced; reservoir conditions; /166/435/

Citation Formats

Bryant, Rebecca S. Microbial enhanced oil recovery and compositions therefor. United States: N. p., 1990. Web.
Bryant, Rebecca S. Microbial enhanced oil recovery and compositions therefor. United States.
Bryant, Rebecca S. Mon . "Microbial enhanced oil recovery and compositions therefor". United States. https://www.osti.gov/servlets/purl/867287.
@article{osti_867287,
title = {Microbial enhanced oil recovery and compositions therefor},
author = {Bryant, Rebecca S},
abstractNote = {A method is provided for microbial enhanced oil recovery, wherein a combination of microorganisms is empirically formulated based on survivability under reservoir conditions and oil recovery efficiency, such that injection of the microbial combination may be made, in the presence of essentially only nutrient solution, directly into an injection well of an oil bearing reservoir having oil present at waterflood residual oil saturation concentration. The microbial combination is capable of displacing residual oil from reservoir rock, which oil may be recovered by waterflooding without causing plugging of the reservoir rock. Further, the microorganisms are capable of being transported through the pores of the reservoir rock between said injection well and associated production wells, during waterflooding, which results in a larger area of the reservoir being covered by the oil-mobilizing microorganisms.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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