FIELD: machine building.
SUBSTANCE: invention relates to collar formations separator. Collar formations separator includes housing with sealing collar installed in it with upper end lowered in well on casing string and fixed on it with locking elements, made in form of funnel. Housing is made in form of casing string centralizer, which upper cylindrical part is made with inner annular groove, in which collar tail part is installed and fixed with locking elements. Collar is made in form of cylinder. Gap between collar upper and lower parts is made corrugated in longitudinal direction with conditional outer diameter smaller, than well shaft diameter, and in working position, its diameter is greater than or equal to well shaft diameter.
EFFECT: technical result is creation of reliable and leak-tight formations in well separation device.
5 cl, 4 dwg
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