Patent ID: 7350598

Claim:
A downhole tool for use within a well having a diameter and an interior surface, the tool comprising: a body having an external diameter smaller than the diameter of the well so as to form an annular gap between the body and the interior surface; a first downhole fluid passage provided in the body and having an upper inlet and a lower outlet; at least one secondary fluid passage provided at the body and extending between the first downhole fluid passage and the annular gap; a sleeve member provided at the body and adapted to move between a first position in which said at least one secondary fluid passage is closed and a second position in which said at least one secondary fluid passage is open; and retention means comprising a co-operating engagement means having a first key member receivable within a first recess, the retention means being adapted to maintain the sleeve member at at least one of the first and second positions upon rotation of the body within the well when the rate of rotation is above a predetermined value.