Christmas tree assembly with high integrity pipeline protection system

Abstract

A mineral extraction system that includes a christmas tree. The christmas tree includes a valve that controls the flow of hydrocarbons through the christmas tree. A subsea control module couples to the christmas tree. The subsea control module controls the valve to control the flow of hydrocarbons through a conduit in the christmas tree. A high integrity pipeline protection system integrated with the subsea control module. The high integrity pipeline protection system includes a first pressure sensor that emits a first signal indicative of pressure in the conduit. A high integrity pipeline protection controller that receives the first signal indicative of the pressure and automatically controls operation of the valve in response to the pressure exceeding a threshold pressure.

1 . A mineral extraction system, comprising:
 a christmas tree, the christmas tree comprising:
 a valve configured to control a flow of hydrocarbons through the christmas tree; 
   a subsea control module coupled to the christmas tree, wherein the subsea control module is configured to control the valve to control the flow of hydrocarbons through a conduit in the christmas tree;   a high integrity pipeline protection system integrated with the subsea control module, the high integrity pipeline protection system comprising:
 a first pressure sensor configured to emit a first signal indicative of a pressure in the conduit; and 
 a high integrity pipeline protection controller configured to receive the first signal and to automatically control operation of the valve in response to the pressure exceeding a threshold pressure. 
   
     
     
         2 . The system of  claim 1 , wherein subsea control module comprises a first controller configured to control the valve in response to feedback from an operator. 
     
     
         3 . The system of  claim 2 , wherein the subsea control module comprises a power supply configured to provide power to a solenoid driver module. 
     
     
         4 . The system of  claim 3 , comprising a coil configured to receive power from the solenoid driver module, wherein the coil controls operation of a solenoid operated direct control valve to control the valve. 
     
     
         5 . The system of  claim 1 , comprising an actuator coupled to the valve, wherein the actuator is configured to receive hydraulic fluid to block closing of the valve. 
     
     
         6 . The system of  claim 1 , comprising a second pressure sensor, the second pressure sensor is configured to emit a second signal indicative of the pressure in the conduit. 
     
     
         7 . The system of  claim 6 , wherein the first pressure sensor and the second pressure sensor are upstream from the valve. 
     
     
         8 . The system of  claim 1 , comprising a flowline coupled to the christmas tree, wherein the mineral extraction system excludes a second high integrity pipeline protection system between the christmas tree and the flowline. 
     
     
         9 . A subsea control module comprising:
 a first controller configured to control a christmas tree valve that controls a flow of hydrocarbons out of a christmas tree;   a high integrity pipeline protection system, the high integrity pipeline protection system comprising:
 a first pressure sensor configured to emit a first signal indicative of a pressure in a conduit of the christmas tree; and 
 a first high integrity pipeline protection (HIPP) controller configured to receive the first signal indicative of the pressure and to automatically control operation of the christmas tree valve in response to the pressure exceeding a threshold pressure. 
   
     
     
         10 . The subsea module of  claim 9 , comprising a second controller configured to control the christmas tree valve that controls the flow of hydrocarbons out of the christmas tree. 
     
     
         11 . The subsea module of  claim 9 , comprising a solenoid driver module configured to supply power to a first coil and a second coil. 
     
     
         12 . The subsea module of  claim 11 , comprising a solenoid operated direct control valve, wherein the first coil and the second coil are configured to maintain the solenoid operated direct control valve in an open position while energized. 
     
     
         13 . The subsea module of  claim 9 , comprising a second pressure sensor configured to emit a second signal indicative of the pressure. 
     
     
         14 . The subsea module of  claim 13 , wherein the first HIPP controller is configured to use a logic solver to determine whether the pressure in the conduit exceeds the threshold pressure using the first signal and the second signal. 
     
     
         15 . The subsea module of  claim 13 , wherein the second HIPP controller is configured to use a logic solver to determine whether the pressure in the conduit exceeds the threshold pressure using the first signal and the second signal. 
     
     
         16 . A subsea control module comprising:
 a first controller configured to control a christmas tree valve that controls a flow of hydrocarbons out of a christmas tree;   a second controller configured to control the christmas tree valve that controls the flow of hydrocarbons out of the christmas tree;   a high integrity pipeline protection system, the high integrity pipeline protection system comprising:
 a first pressure sensor configured to emit a first signal indicative of a pressure in a conduit of the christmas tree; 
 a second pressure sensor configured to emit a second signal indicative of the pressure in the conduit of the christmas tree; 
 a first high integrity pipeline protection controller configured to receive the first signal and the second signal and to automatically control operation of the christmas tree valve in response to the first signal and the second signal; and 
 a second high integrity pipeline protection controller configured to receive the first signal and the second signal and to automatically control operation of the christmas tree valve in response to the first signal and the second signal. 
   
     
     
         17 . The subsea module of  claim 16 , comprising a solenoid driver module configured to supply power to a first coil and a second coil. 
     
     
         18 . The subsea module of  claim 17 , comprising a solenoid operated direct control valve, wherein the first coil and the second coil are configured to maintain the solenoid operated direct control valve in an open position while energized. 
     
     
         19 . The subsea module of  claim 17 , comprising a first power supply and a second power supply, wherein the first power supply and the second power supply are configured to supply power to the solenoid driver module. 
     
     
         20 . The subsea module of  claim 16 , wherein the first HIPP controller and the second HIPP controller are configured to use a logic solver to determine whether the pressure in the conduit exceeds a threshold pressure using the first signal and the second signal.