Wellhead system and method for carbon capture and storage

Abstract

A system and method for carbon capture and storage in a depleted hydrocarbon reservoir or dedicated aquifer is disclosed. A wellhead block includes or supports therewith a barrier subsystem having one or more of at least one isolation gate valve or one or more plugs. The barrier subsystem is to allow access to a well that is associated with the depleted hydrocarbon reservoir or dedicated aquifer. The system includes modulation valves to modulate an injection of a wellhead fluid that includes a carbon component into the wellhead block.

What is claimed is: 
     
         1 . A system for carbon capture and storage in a depleted hydrocarbon reservoir or dedicated aquifer, the system comprising:
 a wellhead block to comprise or support therewith a barrier subsystem of one or more of at least one isolation gate valve or one or more plugs, the barrier subsystem to allow access to a well that is associated with the depleted hydrocarbon reservoir or dedicated aquifer; and   one or more modulation valves to modulate an injection of a wellhead fluid comprising a carbon component into the wellhead block.   
     
     
         2 . The system of  claim 1 , further comprising:
 the one or more modulation valves comprising an insert-retrievable choke valve, the insert-retrievable choke valve comprised or supported within the wellhead block.   
     
     
         3 . The system of  claim 2 , further comprising:
 an in-line high-flow retrievable metering valve subsystem to be associated with the wellhead block and to be used to control injection of the wellhead fluid along with the insert-retrievable choke valve.   
     
     
         4 . The system of  claim 1 , further comprising:
 an in-bore safety valve to be associated with a safety feature of the wellhead block and to enable isolation of a wellbore of the well that supports flow of reservoir fluid, separately from injection of the wellhead fluid.   
     
     
         5 . The system of  claim 1 , further comprising:
 an internal profile for the wellhead block to support or enable the one or more plugs to be set within the wellhead block.   
     
     
         6 . The system of  claim 1 , further comprising:
 a mechanical connector of the wellhead block to couple the wellhead block to a wellhead of the well and a top profile of the wellhead block to allow a connection for an open water riser system, a riserless light well intervention (RLWI) stack, or a blowout preventer (BOP) to the wellhead block.   
     
     
         7 . The system of  claim 1 , wherein the wellhead block comprises a choke wellhead block and a gate wellhead block, the choke wellhead block comprising a flowline connection through a flow spool that is coupled to the isolation gate valve and comprising a hot-stab port for annulus access, and the gate wellhead block comprising the at least one gate valve and comprising a bore-through hole to enable the access to the well for intervention and wireline operations. 
     
     
         8 . The system of  claim 1 , wherein the barrier subsystem and the one or more modulation valves is part of a template structure that is associated, at least in part, with a plurality of wells. 
     
     
         9 . The system of  claim 1 , further comprising:
 the one or more plugs to enable barriers between a bore of the well and an environment outside the well.   
     
     
         10 . The system of  claim 1 , further comprising:
 connections for downhole lines in the wellhead block using flying leads from distribution equipment that are coupled to ports of the wellhead block, wherein access lines feed through the ports and through a tubing hanger associated with the wellhead block.   
     
     
         11 . The system of  claim 1 , further comprising:
 at least one flow measurement device to enable individual well injection rates to be monitored for the wellhead fluid.   
     
     
         12 . A method for carbon capture and storage in a depleted hydrocarbon reservoir or dedicated aquifer, the method comprising:
 providing a wellhead block that comprises or supports therewith a barrier subsystem of one or more of at least one isolation gate valve or one or more plugs;   allowing, using the barrier subsystem, access to a well that is associated with the depleted hydrocarbon reservoir or dedicated aquifer; and   modulating, using one or more modulation valves, an injection of a wellhead fluid comprising a carbon component into the wellhead block.   
     
     
         13 . The method of  claim 12 , wherein the one or more modulation valves comprises an insert-retrievable choke valve, the insert-retrievable choke valve comprised or supported within the wellhead block. 
     
     
         14 . The method of  claim 13 , further comprising:
 associating an in-line high-flow retrievable metering valve subsystem with the wellhead block; and   controlling injection of the wellhead fluid using the in-line high-flow retrievable metering valve subsystem and the insert-retrievable choke valve.   
     
     
         15 . The method of  claim 12 , further comprising:
 associating an in-bore safety valve with a safety feature of the wellhead block; and   enabling isolation of a wellbore of the well using the in-bore safety valve, the wellbore supporting flow of reservoir fluid, separately from injection of the wellhead fluid.   
     
     
         16 . The method of  claim 12 , further comprising:
 providing an internal profile for the wellhead block to support or enable the one or more plugs to be set within the wellhead block.   
     
     
         17 . The method of  claim 12 , further comprising:
 coupling, using a mechanical connector of the wellhead block, the wellhead block to a wellhead of the well; and   allowing, using a top profile of the wellhead block, a connection for an open water riser system, a riserless light well intervention (RLWI) stack, or a blowout preventer (BOP) to the wellhead block.   
     
     
         18 . The method of  claim 12 , wherein the wellhead block comprises a choke wellhead block and a gate wellhead block, the choke wellhead block comprising a flowline connection through a flow spool that is coupled to the isolation gate valve and comprising a hot-stab port for annulus access, and the gate wellhead block comprising the at least one gate valve and comprising a bore-through hole to enable the access to the well for intervention and wireline operations. 
     
     
         19 . The method of  claim 12 , wherein the barrier subsystem and the one or more modulation valves is part of a template structure that is associated, at least in part, with a plurality of wells. 
     
     
         20 . The method of  claim 12 , further comprising:
 enabling, using the one or more plugs, barriers between a bore of the well and an environment outside the well.