Abstract: The present invention provides methods for increasing the viscosity of the drive fluid for displacing oil from a subterranean formation by the use of microorganisms selected or modified for the ability to produce cell free polymers without the formation of any significant bioplugging biofilm or capsule.
Type:
Grant
Filed:
December 6, 2017
Date of Patent:
March 12, 2019
Assignee:
Geo Fossil Fuels, LLC
Inventors:
William J. Kohr, David J. Galgoczy, Zhaoduo Zhang
Abstract: The present invention provides methods for increasing the viscosity of the drive fluid for displacing oil from a subterranean formation by the use of microorganisms selected or modified for the ability to produce cell free polymers without the formation of any significant bioplugging biofilm or capsule.
Type:
Grant
Filed:
September 11, 2014
Date of Patent:
January 16, 2018
Assignee:
Geo Fossil Fuels, LLC
Inventors:
William J. Kohr, David J. Galgoczy, Zhaoduo Zhang
Abstract: Efficient, economical and environmentally safe microbial methods to enhance oil recovery in existing oil reservoirs, as well as microorganisms useful in such methods. The microorganisms are capable of growing in an environment of high salinity, and are deficient in their ability to degrade short chain hydrocarbons of about 12 carbons or less.