TENSIONER LATCH WITH PIVOTING SEGMENTED BASE

摘要

A tensioner assembly for applying tension to a tubular member, such as a riser, can include an upper latch connected to the tubular member, a platform with a bore, and a plurality of lower latch segments, each having a base that is pivotally connected to the platform. After applying tension to the tubular member, the segments pivot inward to form an annular lower latch ring having an inner diameter less than an outer diameter of the upper latch. The assembly can include a locking mechanism that prevents axial movement of the upper latch, relative to the lower latch ring, after engagement. The upper latch can self-center on the lower latch as it is moved into the latching position.

主权项

1. An apparatus for providing tension to a riser, the apparatus comprising:
a platform having a bore therethrough; a tubular member extending through the bore; an annular upper latch member connected to an outer diameter of the tubular member, the upper latch member having an end surface; an annular centralizer ring connected to an outer diameter of the tubular member, axially below the upper latch member. a plurality of latch segments positioned circumferentially around the bore, each of the plurality of latch segments being moveable between an open position and an engaged position, the plurality of latch segments, in the open position, defining an inner diameter greater than an outer diameter of the centralizer ring, and in the engaged position, an engagement end of each of the latch segments being nearer an axis of the bore than in the open position to define an annular latch ring having an inner diameter smaller than the outer diameter of the upper latch member.