FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to oil production and can be used in production of viscous oil during bottom-hole zone treatment with high temperature and pressure steam using well temperature distribution measuring devices. The fibre optic cable for measuring the temperature distribution in the steam injection wells comprises an optical fibre with protective coating, loosely laid in a modular metal tube which is accommodated within an outer metal tube. Also the outer metal tube has inside two identical protective metal tubes the ratio of inner diameter of which to the outer diameter of the modular metal tube is more than 3.2, and the modular metal tube with optical fibres is placed inside protective metal tubes.
EFFECT: invention allows to expand the scope of application.
1 dwg
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