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Thermal-operated valve for control of coolant rate of flow in oil wells

Patent ·
OSTI ID:5770813
A thermally operated valve for automatic control of the rate of flow of a fluid coolant for hot gases produced by underground gasification of solid fuel deposits or by in situ combustion in oil wells, incorporating a temperature-sensitive element comprising a metal tube several meters long to be incorporated in a pipe for supplying coolant to the well, and a rod of a metal having a low coefficient of expansion coaxial with the pipe, the upper end of which rod is attached to the upper part of the metal tube and the lower end of which rod is flexibly connected to a valve member by a connecting element having adjustable clearance or play.
Assignee:
Institut National Des Ind Extractives (Belgium)
Patent Number(s):
US 4209065
OSTI ID:
5770813
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION PRODUCTS
CONTROL EQUIPMENT
COOLANTS
COOLING
DESIGN
ENERGY SOURCES
ENHANCED RECOVERY
EQUIPMENT
FLOW RATE
FLOW REGULATORS
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
IN-SITU COMBUSTION
IN-SITU GASIFICATION
IN-SITU PROCESSING
MATERIALS
OXIDATION
PETROLEUM
PIPES
PROCESSING
RECOVERY
SPRAY COOLING
TEMPERATURE DEPENDENCE
THERMAL RECOVERY
THERMOCHEMICAL PROCESSES
VALVES