DISPOSITIF D'CANCHEITE POUR LA SURFACE EXTERIEURE D'UNE PORTION DE TUYAN

摘要

A segmented housing adapted for clamping about a tubular member, with a resilient packer mounted about the tubular member and within the housing. A fluid actuated piston carried by the housing is adapted to apply an axial engaging force to the packer to sealingly engage it with the tubular member. Also disclosed are circumferentially disposed slips mounted in the housing and arranged to move radially into engagement with the tubular member in response to the axial piston force. A plurality of longitudinally spaced packers and slips and longitudinal inter-packer seals are provided in some embodiments which are useful for clamping about an opening in a tubular member or for use with a tapping apparatus to cut openings in pressurized pipes.