corrugated heating duct and method of use in thermal extension and subsidence mitigation

摘要

corrugated heating duct and method of use in thermal expansion and subsidence mitigation a method of maintaining the structural integrity of a heating duct used for heating a permeable body of hydrocarbon material involved in a built-in permeability control infrastructure. the method (200) includes obtaining (202) a heating duct with corrugated walls and configured to transport a heat transfer fluid, burying (204) the heating duct to a depth in the permeable body of hydrocarbon and with an inlet end extending from the boundary of the built-in permeability control infrastructure (206) operatively coupling the inlet end of the heating duct to a heat source of the heat transfer fluid, and (208) the passage of the heat transfer fluid through the heating conduit for the heat transfer from the heat transfer fluid to the permeable body, with the corrugations in the corrugated walls mitigating the thermal expansion of the heating conduit iongitudinal geometric axis and allowing the heating duct flexes accordingly, in response to the subsidence of the permeable body.