Process for the fluid extraction of fossil hydrocarbons from crude oil deposits, oil sands and tar sands, with subsidiary claims for the utilisation of geothermal and solar energy in conjunction with and by conversion via hot-air engines

摘要

The patent application contains, in the main claim, a process for improved crude oil recovery with the use of gases at or above their isopycnic densities and, in independent subsidiary claims and subclaims, processes for the hydrocarbon recovery from oil sands and tar sands by high-pressure extraction via fluid phases, assisted by a special treatment with ultrasonics or in a microwave heater, and a process for the utilisation of geothermal energy from new or not or no longer oil-producing boreholes, without rock fracture by countercurrent flushing at low flow rate. These processes result in technical embodiments which are described in independent subsidiary claims with subclaims and for which patent protection is claimed. These deal with an inversion-flushing head, with hot-air engines which are heated by hot water from geothermal and solar sources or by direct radiant heat absorption, and with combinations of these hot-air engines with current generators, cereal mills, water pumps and large fans. These inventions thus belong to the technical field of energy technology by recovery of fossil hydrocarbons as well as utilisation of terrestrial heat, and to the field of energy conversion into utilisable work output with suitable working machines such as hot-air engines.