FIELD: oil and gas industry.
SUBSTANCE: invention relates to devices for centring of pipes in a well. The centralising system contains the first housing part (204); the second housing part (202); a group of bow-shaped springs connecting the first housing part to the second housing part and a window (208) located in the first housing part. The centralising system also contains the pipe lowered into a wellbore, and also the bulge (304) located in a window. The window width is such that it is greater than the width of the bulge and provides a possibility of the centraliser rotation around the pipe lowered into a wellbore with reference to the named bulge.
EFFECT: decrease of breakaway force, use of the centraliser in wells with small gap, and also simplification of the process of centraliser installation.
24 cl, 7 dwg, 1 tbl
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