Use of wired tubulars for communications/power in an in-riser application

Abstract

A method for controlling a subsea valve assembly includes connecting a subsea riser between a wellhead and a surface vessel. An in-riser control unit is attached to a wired pipe string and disposed within the subsea riser, resulting in the in-riser control unit being deployed in-riser. The wired pipe string is connected to a surface control unit and a communication signal is transmitted through the wired pipe string between the surface control unit and the in-riser control unit to control the subsea valve assembly.

1 . A method for controlling a subsea valve assembly, comprising:
 connecting a subsea riser between a wellhead and a surface vessel;   attaching an in-riser control unit to a wired pipe string;   disposing the wired pipe string within the subsea riser, resulting in the in-riser control unit being deployed in-riser;   connecting the wired pipe string to a surface control unit;   transmitting, through the wired pipe string, a communication signal between the surface control unit and the in-riser control unit to control the subsea valve assembly.   
     
     
         2 . The method of  claim 1 , wherein a wire of the wired pipe string comprises a coaxial cable. 
     
     
         3 . The method of  claim 1 , wherein the wired pipe string comprises production pipe string. 
     
     
         4 . The method of  claim 1 , further comprising monitoring the subsea test tree through the wired pipe string. 
     
     
         5 . The method of  claim 4 , wherein at least one of a pressure, temperature, tension, torsion, flow rate, voltage, and current are monitored. 
     
     
         6 . The method of  claim 1 , wherein the method is employed for communication during in-riser well completion. 
     
     
         7 . The method of  claim 1 , wherein the method is employed for communication during in-riser well production. 
     
     
         8 . The method of  claim 1 , further comprising installing one or more amplifiers along the wired pipe string, resulting in a signal amplification of signals communicated along the wired pipe string. 
     
     
         9 . The method of  claim 1 , further comprising installing one or more sensors along the wired pipe string, resulting in sensing along the wired pipe string. 
     
     
         10 . The method of  claim 9 , wherein at least one of a pressure, temperature, tension, torsion, flow rate, voltage, and current are monitored by the one or more sensors. 
     
     
         11 . A control system of a subsea valve assembly, the system comprising:
 a subsea riser connected between a wellhead and a vessel;   a controller disposed on a wired pipe string wherein the wired pipe string is disposed in the subsea riser and configured to control the subsea valve assembly;   a surface control unit disposed on the vessel and configured to communicate with the controller through the wired pipe string.   
     
     
         12 . The control system of  claim 11 , wherein a wire of the wired pipe string comprises a coaxial cable. 
     
     
         13 . The control system of  claim 11 , wherein the wired pipe string comprises production pipe string. 
     
     
         14 . The control system of  claim 11 , wherein the controller is configured to monitor at least one of a pressure, temperature, tension, torsion, flow rate, voltage, and current. 
     
     
         15 . The control system of  claim 11 , further comprising one or more amplifiers disposed along the wired pipe string configured to amplify signals communicated along the wired pipe string. 
     
     
         16 . The control system of  claim 11 , further comprising one or more sensors disposed along the wired pipe string. 
     
     
         17 . The control system of  claim 16 , wherein at least one of a pressure, temperature, tension, torsion, flow rate, voltage, and current are monitored by the one or more sensors.