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Method for consolidating unconsolidated subsurface formations

Patent ·
OSTI ID:6485765
;
In a method for consolidating unconsolidated subsurface formations, steam and air are mixed at conditions and in proportions causing a portion of the steam to condense (condensate) and the resulting mixture is displaced down a well and into the incompetent formation. Injection of the mixture and air into the formation is continued for a period adequate to bond the incompetent formation with coke for a desired distance from the borehole wall. The mixture of steam, condensate, and air is injected at temperatures ranging from 300 to 500/sup 0/F to produce a coke insoluble in the cokable oil and having adequate strength to prevent flow of sand into the well. Air can be mixed with superheated steam to provide the mixture to be run down into the well.
Assignee:
Gulf Research and Development Co.
Patent Number(s):
US 3254716
OSTI ID:
6485765
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AIR
CARBONIZATION
CHEMICAL REACTIONS
COKING
CONTROL
CRACKING
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HEATING
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
OIL WELLS
OXYGEN COMPOUNDS
PETROLEUM
PYROLYSIS
SAND
STEAM
SUPERHEATING
THERMOCHEMICAL PROCESSES
WATER
WELL COMPLETION
WELLS