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1. (WO2018184090) METHOD AND SYSTEM FOR RECYCLING WELLS FOR ENERGY PRODUCTION IN A GEOTHERMAL ENVIRONMENT

Pub. No.:    WO/2018/184090    International Application No.:    PCT/CA2018/000063
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Sat Mar 24 00:59:59 CET 2018
IPC: F24T 10/10
E21B 41/00
E21B 43/30
Applicants: EAVOR TECHNOLOGIES INC.
Inventors: CAIRNS, Paul
SMITH, Jeff
Title: METHOD AND SYSTEM FOR RECYCLING WELLS FOR ENERGY PRODUCTION IN A GEOTHERMAL ENVIRONMENT
Abstract:
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.