Patent ID: 8820418

Claim:
A shifting tool for use in a hydrocarbon production well, the shifting tool comprising: an upwell end and a downwell end; a housing assembly having an annular sidewall, at least one pad port disposed through said sidewall, and at least one collet port disposed through said sidewall; at least one friction pad aligned with said at least one pad port; a mandrel having an upper end, a lower end, and an outer mandrel surface having a minimum outer diameter, said mandrel defining a flowpath extending between said upper end and said lower end around a longitudinal axis, said mandrel being positioned at least partially within said housing assembly, said mandrel further having a piston section and a collet section, said collet section comprising a first enlarged portion having a first outer diameter larger than said minimum outer diameter and a second enlarged portion downwell of said first enlarged portion and having a second outer diameter larger than said minimum outer diameter; wherein said mandrel and said housing assembly partially define an annular space between said upwell end and said downwell end; a collet having an upper end, a lower end, and at least one of key having an inner portion and an outer portion; a collet spring positioned in said annular space longitudinally between said collet and said upwell end; and a return spring having an upper and lower end, said return spring positioned in said annular space longitudinally between said collet spring and said downwell end.