Abstract: A filter device housed within a body component. The filter device can include an outer filter and an inner filter positioned coaxially within the outer filter. The outer and inner filters may be composed of a material having mesh, slots, holes, or any other openings being of a sufficient size and shape to restrict passage of items of a predetermined size or larger. Formed between the inner and outer filters is a first annular space into which fluid that is provided down the drill string may enter. The filter device may also include a valve within the internal bore which regulates passage of wellbore fluid provided to the drill string, or for a wireline or slickline, to pass through the filter device in order to access other components of the drill string downhole from the filter device.

Abstract: A filter device housed within a body component. The filter device can include an outer filter and an inner filter positioned coaxially within the outer filter. The outer and inner filters may be composed of a material having mesh, slots, holes, or any other openings being of a sufficient size and shape to restrict passage of items of a predetermined size or larger. Formed between the inner and outer filters is a first annular space into which fluid that is provided down the drill string may enter. The filter device may also include a valve within the internal bore which regulates passage of wellbore fluid provided to the drill string, or for a wireline or slickline, to pass through the filter device in order to access other components of the drill string downhole from the filter device.

Abstract: A valve assembly comprising a body having a main passage, and a valve member which is located in the main passage and which is rotatable between an open position in which the main passage is substantially open, and a closed position in which the valve member substantially blocks the main passage, and an actuator which is movable generally parallel to the longitudinal axis of the main passage, the actuator being engaged with the valve member such that movement of the actuator generally parallel to the longitudinal axis of the main passage causes the valve member to rotate between its open and closed positions.

Abstract: An assembly of a drill pipe and a connector (10) for connecting a hose (50) to a side-bore (52) of a the drill pipe (54), the drill pipe (54) having a wall (54a) enclosing a main bore (54b), and the side-bore (52) extending through the wall (54a) from the main bore (54b) to the exterior of the drill pipe (54), the connector (10) comprising a hose connector body (12) which forms a first end of the connector (10) which is adapted to be connected to the hose (50), and a drill pipe connector body (14) which forms a second end of the connector (10) which is connected to the drill pipe (54), the connector (10) having an exterior surface and an interior surface which encloses a bore (20, 22) extending from the first end of the connector (10) to a second end of the connector (10), the drill pipe connector body (12) being provided with at least one bayonet connector formation (44) which extends from the exterior surface of the connector (10) generally radially outwardly relative to the bore (20, 22), the bayonet conne

Abstract: A valve assembly comprising a body having a main passage, and a valve member which is located in the main passage and which is rotatable between an open position in which the main passage is substantially open, and a closed position in which the valve member substantially blocks the main passage, and an actuator which is movable generally parallel to the longitudinal axis of the main passage, the actuator being engaged with the valve member such that movement of the actuator generally parallel to the longitudinal axis of the main passage causes the valve member to rotate between its open and dosed positions.

Abstract: An assembly of a drill pipe and a connector (10) for connecting a hose (50) to a side-bore (52) of a the drill pipe (54), the drill pipe (54) having a wall (54a) enclosing a main bore (54b), and the side-bore (52) extending through the wall (54a) from the main bore (54b) to the exterior of the drill pipe (54), the connector (10) comprising a hose connector body (12) which forms a first end of the connector (10) which is adapted to be connected to the hose (50), and a drill pipe connector body (14) which forms a second end of the connector (10) which is connected to the drill pipe (54), the connector (10) having an exterior surface and an interior surface which encloses a bore (20, 22) extending from the first end of the connector (10) to a second end of the connector (10), the drill pipe connector body (12) being provided with at least one bayonet connector formation (44) which extends from the exterior surface of the connector (10) generally radially outwardly relative to the bore (20, 22), the bayonet conne