FIELD: oil and gas industry.
SUBSTANCE: device contains heat transfer tubes-containers with refrigerating fluid, which are connected to the housing and placed inside intermediate column; well is equipped with thermal couple, temperature control and registration unit and an element consisting of conducting cable and housing made as a solid cylindrical ring or its segments with Peltie thermoelectric modules installed inside.
EFFECT: prevention of caving, maintenance of well stability.
7 dwg
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