Flow control device

A flow control device comprising:

• a body having an inlet in a first end thereof, an outlet in a second end thereof, and a passageway extending between the inlet and the outlet, the flow control device further comprising:
• an injection assembly located at least partially within the passageway such that at least a portion of a fluid flowing through the device passes through the injection assembly, the injection assembly including an injector body, the injector body having an injector inlet at a first end thereof, an injector outlet at a second end thereof, and an injector passageway extending between the injector inlet and the injector outlet, the injector passageway having a diameter smaller than the diameter of the passageway such that a substantially annular bypass flow path is formed between an inner surface of the body and an outer surface of the injector body, wherein the flow control device further comprises:
• a flow control portion adapted to control a proportion of the fluid that passes through the injection assembly, the flow control portion comprising a valve member movable between an open condition in which the flow of the fluid through the annular bypass flow path is substantially unrestricted, and a closed condition in which the flow of fluid through the annular bypass flow path is significantly reduced or substantially precluded, and wherein movement of the valve member between the open condition and the closed condition is in response to changes in hydraulic pressure of the fluid passing through the device and results in a substantially controlled pressure ratio across the injector assembly, and the flow control device further comprising:
• one or more flow adjustment members located at the first end of the body and one or more flow adjustment members located at the second end of the body, wherein the one or more flow adjustment members at the first end of the body are configured to reduce turbulence in the fluid entering the flow control device and the one or more flow adjustment members at the second end of the body are configured to increase turbulence in the fluid exiting the injection assembly and/or the annular bypass flow path.