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OwnerKonstantin V. Meling, Jury A. Safonov +6inventors
InventorsKonstantin V. Meling, Jury A. Safonov, Gabdrashit S. Abdrakhmanov, Jury G. Mikhailin, Rodion M. Bogomolov, Valentin V. Salomatin, Almaz A. Mukhametshin, Salikhzyan M. Mingazov
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The device is intended for expanding profile pipes set in a well for patching off a troublesome zone, and also for straightening crumpled casings. The device comprises a housing (1) having an expanding member (3) mounted thereon in bearings (4, 5) on a journal (2) extending at an acute angel to the longitudinal axis of the housing (1). The expanding member (3) is shaped as a spherical segment (9) having its external surface defined by alternating portions of a spherical surface (10) and the lateral surfaces of cylinders (11) whose geometric axes being to a plane perpendicular to the axis (13) of the journal (2).
A device for expanding pipes, comprising a housing (1) having an expending member (3) mounted thereon in bearings (4, 5) on a journal (2) at an angle with respect to the longitudinal axis of the housing (1), characterized in that the expanding member (3) is shaped as a spherical segment (9) having its external surface defined by alternating portions of a spherical surface (10) and the lateral surfaces of cylinders (11) whose geometric axes (12) belong to a plane perpendicular to the axis (13) of the journal (2).
Dependencies are inferred from the claim text.