Abstract: A downhole cleaning tool comprising: a substantially cylindrical body; at least one cleaning member extending from the cylindrical body and being movable between a retracted position and an active position in which the cleaning member is positioned to clean an internal surface of the well bore; and switching means adapted to receive a force applied in a first direction and responsively move the at least one cleaning member from the retracted position to the active position.

Abstract: A downhole tool for use within a well has a body with a first downhole fluid passage provided in the body. The first downhole fluid passage has an upper inlet and a lower outlet. A first sleeve member is slidably mounted to the body such that the first sleeve member is movable between a first position in which the first sleeve member extends from the body and a second position in which the first sleeve member is substantially retracted into the first downhole fluid passage of the body. A guide adapted to guide an object travelling within the first downhole fluid passage to the first sleeve member is provided.

Abstract: A method of cleaning a pipe provides a tool within the pipe. The tool has a body of smaller diameter than the pipe such that the body and pipe define an annulus and a fluid guiding member located at the annulus and movable relative to the pipe. The fluid guiding member moves relative to the pipe to guide fluid forward of the fluid guiding member to a pipe outlet.

Abstract: A downhole tool for use within a well has a body with a first downhole fluid passage provided in the body. The first downhole fluid passage has an upper inlet and a lower outlet. A first sleeve member is slidably mounted to the body such that the first sleeve member is movable between a first position in which the first sleeve member extends from the body and a second position in which the first sleeve member is substantially retracted into the first downhole fluid passage of the body. A guide adapted to guide an object travelling within the first downhole fluid passage to the first sleeve member is provided.

Abstract: A downhole impeller device for use within a well, comprising: a body connectable to a drill string and having an external diameter smaller than the well diameter so as to form an annulus between the body and the well; and one or more impeller members extending from the outer surface of the body such that rotation of the or each impeller member impels drilling fluid within the annulus.

Abstract: A downhole tool for conditioning a casing or liner. The tool includes blades having a circumferential peripheral edge for 360 degree contact with the casing or liner and are formed from a composite material which comprises a polymeric fiber. Such polymeric fibers include Kevlar®, Twaron®, Dyneema®, Spectra® and Diolen®. Bypass channels for fluid flow past the tool are provided in either the tool body or the blades.

Abstract: A downhole tool for conditioning a casing or liner. The tool includes blades having a a circumferential peripheral edge for 360 degree contact with the casing or liner and are formed from a composite material which comprises a polymeric fiber. Such polymeric fibers include Kevlar®, Twaron®, Dyneema®, Spectra® and Diolen®. Bypass channels for fluid flow past the tool are provided in either the tool body or the blades.

Abstract: A downhole tool is provided for use within a casing. The tool includes a collector tool that has a cylindrical body having an external diameter smaller than the casing diameter so as to form an annular gap between the body and the casing. A first downhole fluid passage is provided in the body, which has an upper inlet and a lower outlet. At least one secondary fluid passage extends between the first downhole fluid passage and the annular gap, with a filter arranged between the at least one secondary fluid passage and outlet. A first sleeve member is provided on the body and adapted to move between a first position in which the at least one secondary fluid passage is closed, and a second position in which the at least one secondary fluid passage is open.

Abstract: A pig for use with a tubular bore wherein the pig is comprised of a body which supports a plurality of turbine blades wherein the blades mechanically break down and remove debris from the tubular bore. The blades have a profile which allows forward movement and rotation about a longitudinal axis when acted upon by a propulsion fluid traveling through the tubular. In an alternative embodiment the blades are mounted on a stabilizer body to allow simultaneous centralization and cleaning.