FIELD: heating; oil and gas industry.
SUBSTANCE: present invention relates to temperature controlled pipelines. A flexible multilayer structure pipe contains the following layers from inside to outside: an inner liner, at least two reinforcing layers of metal and outer envelope, wherein between the two reinforcing layers there is a layer of an electrically conductive molding composition, which is in electrical contact with the two reinforcing layers, and the two reinforcing layers can be connected to an electrical power source.
EFFECT: this allows to effectively heat a pipe and can used in oil production in cold regions.
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Authors
Dates
2016-09-20—Published
2012-04-27—Filed