CPC E21B 33/068 (2013.01) [E21B 43/12 (2013.01); E21B 43/26 (2013.01)] | 13 Claims |
1. A method of performing an operation in a borehole, comprising:
seating a ball at a seat member in a flow passage of an inner sleeve, the inner sleeve disposed at a first position within an outer sleeve in a locked configuration of a plug, the outer sleeve includes a key slot therein and a key disposed in the key slot and the inner sleeve includes a recess on its outer surface;
moving, via a fluid pressure at the ball, the inner sleeve to an intermediate position between the first position and a second position to axially align the key slot with the recess to allow the key to collapse into the recess;
moving, via the fluid pressure at the ball, the inner sleeve from the intermediate position to the second position within the outer sleeve to place the plug in an unlocked configuration; and
moving the seat member radially outward via the fluid pressure at the ball to open the flow passage with the inner sleeve at the second position.
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