Subsea production cooler

Abstract

A subsea production cooler module comprising: a core; a coiled tubing disposed around the core, wherein the coiled tubing comprises an inlet and an outlet; and a shroud at least partially encasing the core and the coiled tubing.

1 . A subsea production cooler module comprising:
 a core;   a coiled tubing disposed around the core, wherein the coiled tubing comprises an inlet and an outlet; and   a shroud at least partially encasing the core and the coiled tubing.   
     
     
         2 . The subsea production cooler module of  claim 1 , further comprising a control valve at the top of the shroud capable of regulating the flow of fluid through the shroud. 
     
     
         3 . The subsea production cooler module of  claim 1 , wherein the core and the shroud are insulated. 
     
     
         4 . The subsea production cooler module of  claim 1 , wherein the shroud comprises a conical roof. 
     
     
         5 . The subsea production cooler module of  claim 1 , wherein the coiled tubing comprises an inner coating and an outer coating. 
     
     
         6 . The subsea production cooler module of  claim 1 , wherein the coiled tubing comprises multiple coils of tubing in close proximity to each other. 
     
     
         7 . The subsea production cooler module of  claim 1 , wherein the coiled tubing comprises an inner coil and an outer coil spiraled around the core in opposite directions. 
     
     
         8 . The subsea production cooler module of  claim 1 , further comprising a thermal reservoir disposed in a cavity defined by the coiled tubing. 
     
     
         9 . The subsea production cooler module of  claim 1 , further comprising a cooling fluid chiller disposed about a top portion of the core. 
     
     
         10 . The subsea production cooler module of  claim 9 , wherein the fluid chiller comprises a chiller tubing and a chiller shroud 
     
     
         11 . The subsea production cooler module of  claim 1 , wherein the shroud is removable. 
     
     
         12 . A subsea production cooler comprising:
 a subsea production cooler module; wherein the subsea production cooler module comprises:
 a core; 
 a coiled tubing disposed around the core, wherein the coiled tubing comprises an inlet and an outlet; and 
 a shroud at least partially encasing the core and the coiled tubing; 
   a base; and   a piping system.   
     
     
         13 . The subsea production cooler of  claim 12 , wherein the subsea production cooler comprises multiple subsea production cooler modules arranged in series. 
     
     
         14 . The subsea production cooler of  claim 12 , wherein the subsea production cooler comprises multiple subsea production cooler modules arranged in parallel. 
     
     
         15 . The subsea production cooler module of  claim 12 , wherein the piping system comprises a separator comprising a hot production line, a hot liquid line, and a hot gas line comprising a flow control valve. 
     
     
         16 . A method of cooling a subsea production stream, the method comprising:
 providing a subsea production stream and   cooling the subsea production stream with a subsea production cooler module, wherein the subsea production cooler module comprises:
 a core; 
 a coiled tubing disposed around the core, wherein the coiled tubing comprises an inlet and an outlet; and 
 a shroud at least partially encasing the core and the coiled tubing. 
   
     
     
         17 . The method of  claim 16 , wherein cooling the subsea production stream with the subsea production cooler module comprises:
 separating the subsea production stream into a hot liquid stream and a hot gas stream;   cooling the hot liquid stream with the subsea production cooler module thereby forming a cooled liquid stream; and   combining the cooled liquid stream and the hot gas stream to form a cooled subsea production stream.   
     
     
         18 . The method of  claim 16 , wherein cooling the subsea production stream with the subsea production cooler comprises flowing the production stream upward through the coiled tubing. 
     
     
         19 . The method of  claim 18 , wherein cooling the subsea production stream with the subsea production cooler further comprises allowing cooling fluid to naturally convect within the shroud. 
     
     
         20 . The method of  claim 19 , wherein cooling the subsea production stream with a subsea production cooler is performed without pumping the subsea production stream or the cooling fluid.