Certain embodiments provide a system including a heater. The heater includes one or more electrical conductors. The heater is configured to generate a heat output during application of electrical current to the heater. The heater includes a ferromagnetic material. A conduit at least partially surrounds...http://www.google.es/patents/US20050269090?utm_source=gb-gplus-sharePatente US20050269090 - Temperature limited heaters with thermally conductive fluid used to heat subsurface formations
Temperature limited heaters with thermally conductive fluid used to heat ...
Número de solicitud: 11/112,714 Número de publicación: US 2005/0269090 A1 Fecha de presentación: 22 Abr 2005 Patente emitida: US7383877 ( Fecha de emisión 10 Jun 2008)
