公开(公告)号：US20180291880A1

公开(公告)日：2018-10-11

申请号：US15935016

申请日：2018-03-25

申请人： PAUL CAIRNS ,  JEFF SMITH

发明人： PAUL CAIRNS ,  JEFF SMITH

IPC分类号： F03G7/04 ,  F24T10/13 ,  F24T10/30 ,  F24T50/00

摘要： A method and apparatus for recycling unused or suspended wells and areas with predetermined suitability for well installation. In one embodiment, existing unused well sites are repurposed for contact in or adjacent a geothermal zone. Drilling extends horizontally in direct contact with the geothermal zone for heat transfer and subsequently terminates at a newly drilled well. The heated working liquid within the sealed annulus is cooled within a sealed top loop at or below the surface and recirculated for further heat transfer. The closed loop is continuous above and below the geothermal formation and can cluster several such arrangements and also consolidate clusters in a drilling field of unused wells. The loop may be incorporated in areas with predetermined suitability (greenfield) for well installation.