Abstract: A cleaning device connectable to a downhole tool for use within a well bore, the cleaning device comprising: a base member non-rotatably mountable to the downhole tool; and at least one sleeve member rotatably mountable to and around the base member, the sleeve member having a support member and at least one protruding member which protrudes from the support member and which, in use, contacts an inner surface of the well bore, wherein the support member comprises a bearing material.

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 use within a well 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 of the well. A first downhole fluid passage having an upper inlet and a lower outlet is provided in the body. At least one secondary fluid passage extending between the first downhole fluid passage and the annular gap is provided at the body. A sleeve member is 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. The sleeve member is maintained at one or both of the first and second positions upon rotation of the body within the well.

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 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 fibre. Such polymeric fibres 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 (20) is provided for use within a casing (10). The tool includes a collector tool that comprises: a cylindrical body (21) having an external diameter smaller than the casing diameter so as to form an annular gap (5) between the body and the casing; a first downhole fluid passage (30) provided in the body and having an upper inlet (32) and a lower outlet (34); at least one secondary fluid passage (40) extending between the first downhole fluid passage and the annular gap; a filter means (36) arranged between said at least one secondary fluid passage and said outlet; and a first sleeve member (60) provided on 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.

Abstract: A tool for tuning an engine having a fuel injector unit with a follower and a body with a flange portion protruding outward from the body, includes a support structure having a follower contact surface, a plunger member slidably connected to the support structure, for bearing against the flange portion, a light source connected to a power source, a circuit for delivering electric current from the power source to the light source, and a switch which closes the circuit when the plunger member is moved to a predetermined position, and opens the circuit when the plunger member moves out of the predetermined position. The support structure preferably includes a tubular housing having two ends and which receives the plunger member in one end. A spring is preferably provided for biasing the plunger member in an extended position relative to the support structure. The follower contact surface preferably includes an outward projecting arm member, including a plate having a recess for receiving the top of the follower.