Mandrel Arrangement and Method of Operating Same
AssigneeWtw Solutions AS
InventorBard Martin Tinnen
Life of this patent
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Abstract
A mandrel arrangement is for use in a wellbore tubing. A method is for using the same. A mandrel body houses at least one piston, the at least one piston being movable in relation to the mandrel body between a first position and a second position by a fluid force acting on the piston. A cavity is arranged adjacent the piston for communicating wellbore fluid pressure between the wellbore tubing and the piston. The cavity is provided with drainage means for facilitating removal of any particles present in at least a lower portion of the cavity.
Claims12
A mandrel arrangement for use in a wellbore tubing, the arrangement comprising:
- a mandrel body housing at least one piston, the at least one piston being movable in relation to the mandrel body between a first position and a second position by a fluid force acting on the piston;
- and
- a cavity arranged adjacent the piston for communicating wellbore fluid pressure between the wellbore tubing, and the piston, wherein the cavity is provided with drainage means comprising an opening arranged for communicating fluid between the cavity and the wellbore tubing, thereby facilitating removal of any particles present in at least a lower portion of the cavity.
A method for facilitating operation of a mandrel arrangement for use in a. wellbore tubing, wherein the arrangement comprises:
- a mandrel body housing at least one piston, the at least one piston being movable in relation to the mandrel body between a first position and a second position by a fluid force acting on the piston;
- and a cavity arranged adjacent the piston for communicating wellbore fluid, pressure between the wellbore tubing and the piston, the method comprising providing the cavity with drainage means flowing removal of any particles present in at least a lower portion of the cavity.
Dependencies are inferred from the claim text.