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US 12,275,894 B2Granted
Lignin-based fracturing fluids and related methods
AssigneeLignoSol IP Limited
InventorsDesmond Alexander Somerville, Patrick Dieter Waibel
Life of this patent
Estimating the term…
Abstract
Fracturing or fracking fluids for fracturing a subterranean reservoir for hydrocarbon recovery and related methods are described. The fluid comprises lignin, in particular technical lignin, and at least one strain of bacteria capable of biosurfactant production and/or a biosurfactant produced by at least one such isolated strain of bacteria. Also described is a fracturing method for recovering hydrocarbons from a subterranean formation.
Claims19
A method for fracturing a subterranean reservoir having low permeability and/or porosity, the method comprising:
- providing a fracturing fluid comprising lignin and at least one isolated strain of bacteria capable of producing at least one biosurfactant, and/or at least one biosurfactant produced from at least one isolated strain of bacteria capable of producing a biosurfactant, the fracturing fluid having a solids content of about 50% or above;
- and
- injecting the fracturing fluid under high pressure into the subterranean reservoir having low permeability and/or porosity, thereby producing a fractured subterranean reservoir and increasing the flow of hydrocarbons from the fractured subterranean reservoir for recovery.
Dependencies are inferred from the claim text.