FIELD: oil industry.
SUBSTANCE: invention relates to oil and gas industry and can be used for fixation of pipe string in casing string, as well as prevention of downfall of well equipment in process of oil production by submersible pumps. Anchor for tubing string comprises guide pin, hollow shaft on outer surface of which shaped slot is made to move guide pin, and shaped slot has shortened and elongated sections conjugated with inclined section of slot. Cross-section of guide pin is made in form of ellipse, and length of shortened and elongated sections of groove are connected by ratio 1:10.
EFFECT: technical result consists in improvement of operational reliability of anchor during operation of well equipment at high temperature changes of length of pipe string, as well as improving reliability of armature operation by preventing jamming of guide pin moving along shaped groove of armature shaft.
1 cl, 2 dwg
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