HOLE IN THE GROUND FOR TRANSFER OF GEOTHERMAL ENERGY TO AN ENERGY-CARRYING LIQUID AND A METHOD FOR PRODUCTION OF THE HOLE

摘要

A hole in the earth for transferring geothermal energy from the earth aroundthe hole to an energy carrier fluid which is introducedinto the hole. According to the invention the lower ends (7, 8) of at leasttwo substantially vertically extending hole sections (2, 4) whichhave been used as wells for the recovery of oil or gas, are interconnected bymeans of an additional hole section (3).