ELECTRICAL WELL HEATING SYSTEM AND METHOD

WIPO Patent Application WO2001083940

A9

A system for heating an underground hydrocarbon containing formation, such as a coal or shale-oil deposit, comprises an elongate electrical conductor within a heater well traversing the formation to provide radiant heat to at least a portion of the formation during use such that pyrolysis of hydrocarbons is initiated, which conductor is at least partly surrounded by an electrical insulation layer which comprises a granular insulating mineral material which layer is encased in a corrosion resistant sheath, thereby providing an inexpensive and durable electrical heater.

WO/2018/010017	HYDROCARBON RECOVERY COMPOSITION COMPRISING AN N-ALKYL-2-PYRROLIDONE SURFACTANT, METHOD AND SYSTEM
WO/2008/053147	RECOVERY OF OIL
WO/2001/081721	A METHOD FOR TREATING A HYDROCARBON CONTAINING FORMATION

DE ROUFFIGNAC ERIC
WELLINGTON SCOTT LEE
VINEGAR HAROLD J
KARANIKAS JOHN MICHAEL
KEEDY CHARLES ROBERT

PCT/EP2001/004657

May 22, 2003

April 24, 2001

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SHELL INT RESEARCH (NL)
SHELL CANADA LTD (CA)

C09K8/592; E21B36/00; E21B36/04; E21B41/00; E21B43/24; E21B43/243; E21B43/30; (IPC1-7): E21B36/04

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