FIELD: measuring technology.
SUBSTANCE: invention relates to measuring technology and can be used as an optical sensor cable for measuring the temperature distribution in a well during oil and gas production. The optical sensor cable contains a protective shell in the form of an external and at least one internal sealed metal tubes arranged coaxially. At the same time, at least one optical fiber made with a metal coating is freely laid inside the central internal sealed metal tube along the length of the entire cable. At the same time, the central internal sealed tube is filled with a metal melt that retains a liquid state in the temperature range of cable operation.
EFFECT: increasing the durability of the optical sensor cable, ensuring the prevention of ejection through a metal tube with fiber in case of loss of tube tightness and increasing the temperature range of operation of the optical sensor cable.
7 cl, 4 dwg
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