Closed system hydraulic expander

摘要: The present invention provides an apparatus and method for expanding a first tubular against second tubular. In one aspect, expander tool includes mandrel coupled to spline assembly such that annular space is formed between the same. Seals are placed retain fluid in space. may be used actuate or more members disposed on assembly. movably connected housing, which torque anchor. operation, rotated, which, turn, rotates members. Rotation of also causes extend axially, thereby pulling seal closer seal. As result, pressure rises due compression rise extends into contact with expands