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Methods, additives and compositions for temporarily sealing high temperature permeable formations

Patent ·
OSTI ID:6276380
;

Methods, additives and compositions for selectively temporarily sealing high temperature permeable formations penetrated by well bores. The compositions are formed by dispersing a granular additive into an aqueous medium which contains a galactomannan gum treated with potassium pyroantimonate whereby the hydration rate of the gum is retarded at temperatures below about 120/sup 0/ F but increases at temperatures thereabove. When the composition is introduced into a high temperature permeable formation, it is heated whereby the treated galactomannan gum hydrates and the composition is formed into a stiff gel.

Assignee:
Halliburton Co
Patent Number(s):
US 4378049
OSTI ID:
6276380
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
04 OIL SHALES AND TAR SANDS
040300 -- Oil Shales & Tar Sands-- Drilling
Fracturing & Mining
15 GEOTHERMAL ENERGY
150303 -- Geothermal Exploration & Exploration Technology-- Exploratory Drilling & Well Logging
ADDITIVES
CHEMICAL COMPOSITION
COLLOIDS
DISPERSIONS
GELS
GEOTHERMAL WELLS
GUMS
HEATING
HIGH TEMPERATURE
HYDRATION
NATURAL GAS WELLS
OIL WELLS
PERMEABILITY
PH VALUE
PLUGGING
RESERVOIR ROCK
SOLVATION
WELLS