Liquid gel concentrates and methods of using the same

Patent · Tue Jun 22 04:00:00 EDT 1982

OSTI ID:5334882

Briscoe, J E

High viscosity aqueous well treating fluids to increase the recovery of hydrocarbons from subterranean formations such as by creating fractures in the formations, acidizing the formations, and in well completion fluids having a high density introduced into the well to maintain hydrostatic pressure on the formation are produced as aqueous liquid concentrates of gelling agents (hydratable polymers or copolymers which yield viscosity upon hydration). The hydration rate of the gelling agent or agents is retarded so that the concentrate can be premixed and stored either at the job site or away. When the concentrate is combined with additional water, either in a batch or continuous mixing procedure in a proper ratio and under proper pH and/or temperature conditions, the inhibition of the hydration of the gelling agent is reversed and a high viscosity aqueous fluid is produced. The concentrate also can be utilized directly to produce a high viscosity fluid without the addition of water, and in such use the inhibition of the hydration of the gelling agent or agents in the concentrate is reversed by changing the pH or temperature of the concentrate. 25 claims.

• Assignee: Halliburton Co.
• Patent Number(s): US 4336145
• OSTI ID: 5334882
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACIDIZATION
AQUEOUS SOLUTIONS
COLLOIDS
COMMINUTION
DENSITY
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUIDS
FOSSIL FUELS
FRACTURING
FRACTURING FLUIDS
FUELS
GELS
HYDRATION
HYDRAULIC FRACTURING
MIXTURES
OIL WELLS
PETROLEUM
PH VALUE
PHYSICAL PROPERTIES
RECOVERY
SOLUTIONS
SOLVATION
TEMPERATURE DEPENDENCE
VISCOSITY
WELL COMPLETION
WELLS