Methods of using geothermal energy to treat subsurface formations are described herein. Methods for using geothermal energy to treat a subsurface treatment area containing or proximate to hydrocarbons may include producing geothermally heated fluid from at least one subsurface region. Heat from at least...http://www.google.de/patents/US7730945?utm_source=gb-gplus-sharePatent US7730945 - Using geothermal energy to heat a portion of a formation for an in situ heat treatment process
