Telemetric chemical injection assembly

Abstract

A chemical injection assembly with telemetric capacity and a single fluid injection line capable of reaching multiple downhole injection points. The assembly may take advantage of downhole power telemetry modules so as to intelligently power and direct actuator valves at any of a number of different injection points. So, for example, the need for cumbersome and expensive usage of different delivery lines dedicated to serve different delivery points with the same fluid may be avoided.

1 . A telemetric chemical injection assembly for disposal in a well at an oilfield, the assembly comprising:
 an injection sub;   an actuator valve disposed within said sub to govern fluid injection therefrom;   a power and telemetry module coupled to said valve;   a telemetric line configured to run from a surface of the oilfield to said module; and   a fluid injection line configured to run from a surface of the oilfield to said valve for the fluid injection.   
     
     
         2 . The assembly of  claim 1  wherein said module is disposed within said sub. 
     
     
         3 . The assembly of  claim 1  wherein said module serves as a monitor for well conditions. 
     
     
         4 . The assembly of  claim 3  wherein the well conditions include one of pressure and temperature. 
     
     
         5 . The assembly of  claim 1  wherein said actuator valve is electrically powered via said module. 
     
     
         6 . The assembly of  claim 1  wherein said actuator valve is selected from a group consisting of a plunger valve, a sliding sleeve, a gas lift valve, a solenoid valve, an electric motor and a metering valve. 
     
     
         7 . The assembly of  claim 1  wherein the fluid injection line is configured to supply a chemical injection fluid mix to said valve. 
     
     
         8 . The assembly of  claim 1  further comprising a secondary line configured to run from a surface of the oilfield to said valve for supplying of a secondary fluid. 
     
     
         9 . The assembly of  claim 8  wherein the secondary fluid is a stimulation fluid. 
     
     
         10 . The assembly of  claim 1  wherein said sub and said actuator valve are a first sub and a first actuator valve, the assembly further comprising a second actuator valve coupled to said injection line disposed within a second sub at a different depth of the well than said first sub. 
     
     
         11 . The assembly of  claim 1  wherein said valve is a first valve, the assembly further comprising a second valve coupled to said injection line within the sub. 
     
     
         12 . A telemetric chemical injection system comprising for disposal in a well at an oilfield, the system comprising:
 a tubular with a channel running therethrough and disposed within the well, the well defined by multiple formation regions;   a zonal isolation packer defining a first annulus thereabove and a second annulus therebelow, said packer positioned at a depth between at least portions of the regions;   a first injection sub and power module coupled to said tubular within the first annulus;   a second injection sub and power module coupled to said tubular within the second annulus;   a telemetric line configured to run from a surface of the oilfield to said modules; and   a fluid injection line configured to run from the oilfield surface to said subs.   
     
     
         13 . The system of  claim 12  further comprising:
 a first flow control valve incorporated into said tubular at a location of the first annulus; and 
 a second flow control valve incorporated into said tubular at a location of the second annulus. 
 
     
     
         14 . The system of  claim 12  wherein said subs comprise actuator valves for delivery of fluid from the fluid injection line. 
     
     
         15 . The system of  claim 14  wherein the delivery is directed at one of the channel and a formation interface with the well. 
     
     
         16 . A method of delivering chemical injection fluid to a well at an oilfield, the method comprising:
 directing an actuator valve to open from a surface of the oilfield over a telemetric line running therefrom:   powering said directing through a power telemetry module coupled to the telemetric line and the valve; and   supplying the fluid for the delivering through a fluid injection line coupled to the valve.   
     
     
         17 . The method of  claim 16  wherein the actuator valve is a first actuator valve, said directing further comprising maintaining closure of a second actuator valve coupled to the telemetric and fluid injection lines. 
     
     
         18 . The method of  claim 16  wherein the actuator valve is a first actuator valve, said directing further comprising opening a second actuator valve coupled to the telemetric and fluid injection lines. 
     
     
         19 . The method of  claim 16  further comprising supplying another fluid through a secondary injection line coupled to the valve for another application. 
     
     
         20 . The method of  claim 16  further comprising recovering fluids including the injection fluid through production to a surface at the oilfield.