An economic method for in situ maturing and production of oil shale or other deep-lying, impermeable resources containing immobile hydrocarbons. Vertical fractures are created using horizontal or vertical wells. The same or other wells are used to inject pressurized fluids heated to less than approximately...http://www.google.es/patents/US7857056?utm_source=gb-gplus-sharePatente US7857056 - Hydrocarbon recovery from impermeable oil shales using sets of fluid-heated fractures
Hydrocarbon recovery from impermeable oil shales using sets of fluid-heated ...
