THERMAL EXPANSION ACCOMMODATION FOR SYSTEMS WITH CIRCULATING FLUID MEDIUM, USED FOR ROCKS THICKNESS HEATING Russian patent published in 2017 - IPC E21B36/00 E21B43/24 

FIELD: mining.

SUBSTANCE: group of inventions relates to methods and systems for extracting of hydrocarbons, hydrogen and/or other products from various underground formations, such as layers, containing hydrocarbons. Method of heater thermal expansion accommodation in formation, according to which providing heat carrier flow through channel, to transfer heat into formation. Providing, substantially, constant tension of channel end section, which passes beyond formation. Besides, at least, part of channel end section is wound on movable wheel. At that, movable wheel is movable in, at least, vertical plane, while channel end section is wound on movable wheel. At that, movable wheel is displaced in vertical plane to provide, substantially, constant tension of channel end section.

EFFECT: technical result is increasing efficiency of hydrocarbons extraction, simplification of heating system installation and avoiding damage to channel.

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