Chemical injection system

Abstract

A technique facilitates controlling fluid flows, such as fluid flows in a downhole well zone or zones. A flow control valve is employed to control a fluid flow and is operationally linked with an injection valve. Actuation of the flow control valve is used to automatically actuate the injection valve between corresponding positions allowing or blocking fluid injection. Closing or opening of the flow control valve thus results in a desired corresponding action of the injection valve, such as blocking flow or allowing flow through the injection valve.

What is claimed is: 
     
         1 . A system for controlling flow, comprising
 a flow control valve configured to control flow of fluid between a tubing and a wellbore; and   an injection point operatively coupled to the flow control valve, the injection point configured to receive an injection of fluid from an injection line and deliver the injection of fluid into the tubing or an annulus.   
     
     
         2 . A system for controlling flow in a well, comprising
 a flow control valve operable between an open and a closed position; and   a chemical injection system configured to injection chemicals into the well, wherein the operation of the flow control valve actuates the chemical injection system.   
     
     
         3 . The system of  claim 2  wherein the flow control valve is controlled by a hydraulic control line. 
     
     
         4 . The system of  claim 2 , further comprising a hydraulic control line operatively coupled to the flow control valve and to the chemical injection system. 
     
     
         5 . The system of  claim 4  wherein the hydraulic control line is configured to selectively operate the flow control valve, the chemical injection system, or both the flow control valve and the chemical injection system.