Title:
Electric well heater
United States Patent 3207220

Inventors:
Williams, Chester I.
Publication Date:
09/21/1965
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Assignee:
Williams, Chester I.
Primary Class:
166/60
Other Classes:
166/61
International Classes:
E21B36/04; E21B36/00
US Patent References:
1900588Liquid counter-balanced pumping system
1970295Apparatus for treating well fluids
2524933Interface locator
2597261Well clearing apparatus
2608256Heater for oil wells and pipe lines
2670802Reviving or increasing the production of clogged or congested oil wells
2754912Heater for oil wells
2781851Well tubing heater system
2975721Deep well pumping system
2994377In situ combustion in carbonaceous strata