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Keith Donald Woodford

An injection device comprises a housing comprising an inlet and an outlet and an outlet sleeve mounted within the housing and comprising at least one radial flow port therethrough for permitting fluid communication between the inlet and the outlet. A flow sleeve is mounted over the outlet sleeve and is arranged to move between a first position in which the at least one radial flow port is at least partially closed and a second position in which the at least one radial flow port is opened. The injection device also includes a flow sleeve actuator operable by a biasing arrangement and inlet pressure at the inlet of the housing to permit the flow sleeve to be selectively moved between its first and second positions to vary flow through the at least one radial flow port between the inlet and the outlet.

Injection device

A flow system comprises a system flow path extending from a system inlet to a system outlet. A pressure module is provided within the system flow path to establish a differential pressure between upstream and downstream sides thereof during flow from the system inlet to the system outlet The system also comprises a valve provided within the system flow path, and a valve actuator in pressure communication with the system flow path on upstream and downstream sides of the pressure module. The valve actuator is driven by a differential pressure established by the pressure module to move between a first position in which the valve is closed, and a second position in which the valve is opened.

Flow system

An injection device for use in injecting a fluid into a target location comprises a housing and a valve assembly located within the housing. The housing defines an inlet for communicating with an injection line, an outlet for communicating with a target location, and an injection fluid flow path extending between the inlet and outlet. The valve assembly located is configured to control the flow of injection fluid along the flow path and comprises first and second valve members both arranged to move within the housing, wherein in an open configuration to permit flow the first and second members are disengaged, and in a closed configuration to prevent flow the first and second members are engaged and the first valve member is biased against the second member by inlet fluid pressure to assist sealing therebetween.

An apparatus for regulating the flow of a fluid from a source to a target location comprises a housing defining a fluid inlet configured to communicate with a fluid source and a fluid outlet configured to communicate with a target location, and a flow path extending between the fluid inlet and fluid outlet. An inlet valve assembly is mounted in the flow path and comprises a valve seat and a valve member configured to cooperate with the valve seat to regulate flow through the flow path. A balance arrangement is provided and is configured to balance the effect of fluid pressure acting on the inlet valve assembly.

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Aberdeen, United Kingdom

Keith Donald Woodford