Method of running a tubing hanger and internal tree cap simultaneously

Abstract

An assembly for the completion of a subsea horizontal tree that includes a tubing hanger, an internal tree cap, and a running tool.

1 . A method of completing a well comprising a treehead comprising a bore, comprising:
 (a) connecting a running tool to an internal tree cap and to a tubing hanger, then lowering the internal tree cap and tubing hanger as an assembly, and landing the tubing hanger in the bore of the treehead; then   (b) locking the tubing hanger to the bore of the treehead by injecting fluidic material into and through the running tool and the tubing hanger; and then   (c) locking the internal tree cap to the bore of the treehead.   
   
   
       2 . The method of  claim 1 , wherein (a) comprises:
 connecting a lifting device of the running tool to the internal tree cap and connecting a linking assembly between the internal tree cap and the tubing hanger so that the internal tree cap supports the weight of the tubing hanger through the linking assembly.   
   
   
       3 . The method of  claim 2 , wherein (a) comprises:
 connecting a pivoting linking assembly between the internal tree cap and the tubing hanger so that the internal tree cap supports the weight of the tubing hanger through the linking assembly.   
   
   
       4 . The method of  claim 3 , wherein (a) comprises:
 connecting internal and external pivoting linking assemblies between the internal tree cap and the tubing hanger so that the internal tree cap supports the weight of the tubing hanger through the linking assembly.   
   
   
       5 . The method of  claim 2 , wherein (a) comprises:
 locking the lifting device of the running tool to an internal recess defined in the internal tree cap.   
   
   
       6 . The method of  claim 1 , wherein the tubing hanger comprises a radially movable locking element and an axially movable actuator; and wherein (b) comprises stroking the actuator of the tubing hanger to cause the locking element of the tubing hanger to move radially into a lower profile formed in the bore of the treehead. 
   
   
       7 . The method of  claim 1 , wherein the internal tree cap comprises a radially movable locking element and an axially movable actuator; and wherein (c) comprises stroking the actuator of the internal tree cap to cause the locking element of the internal tree cap to move radially into an upper profile formed in the bore of the treehead. 
   
   
       8 . The method of  claim 1 , wherein the internal tree cap and the tubing hanger each comprise a radially movable locking element and an axially movable actuator; wherein (b) comprises stroking the actuator of the tubing hanger to cause the locking element of the tubing hanger to move radially into a lower profile formed in the bore of the treehead; and wherein (c) comprises stroking the actuator of the internal tree cap to cause the locking element of the internal tree cap to move radially into an upper profile formed in the bore of the treehead. 
   
   
       9 . The method of  claim 1 , wherein the running tool comprises a longitudinal passage; and wherein the tubing hanger comprises a radial passage coupled thereto. 
   
   
       10 . The method of  claim 1 , further comprising,
 after (c), retrieving the running tool.   
   
   
       11 . The method of  claim 1 , further comprising,
 after (c), retrieving the internal tree cap and the linking assembly.   
   
   
       12 . A well assembly, comprising:
 a treehead comprising a bore comprising upper and lower profiles;   a tubing hanger defining a radial passage and comprising a radially movable locking element and an axially movable actuator for moving the locking element of the tubing hanger into engagement with the lower profile;   an internal tree cap having a radially movable locking element and an axially movable actuator for moving the locking element of the internal tree cap into engagement with the upper profile;   a linking assembly for coupling the tubing hanger and the internal tree cap; and   a running tool defining a longitudinal passage operably coupled to the radial passage of the tubing hanger comprising a lift member that releasably engages a portion of the internal tree cap for lowering the tree cap into the bore of the treehead, and an actuator sleeve that releasably engages the actuator of the internal tree cap to stroke the actuator of the internal tree cap.   
   
   
       13 . The assembly of  claim 12 , wherein the actuator of the tubing hanger is moved axially by fluidic pressure. 
   
   
       14 . The assembly of  claim 12 , wherein the linking assembly engages profiles formed in the tubing hanger and the internal tree cap. 
   
   
       15 . The assembly of  claim 12 , wherein the linking assembly comprises:
 an internal linking assembly; and   an external linking assembly.   
   
   
       16 . The assembly of  claim 12 , wherein the linking assembly is pivotally coupled to the internal tree cap. 
   
   
       17 . The assembly of  claim 12 , wherein the lift member is pivotally coupled to the running tool. 
   
   
       18 . The assembly of  claim 12 , wherein the internal tree cap supports substantially all of the weight of the tubing hanger. 
   
   
       19 . An assembly for completing a treehead that comprises a bore comprising upper and lower profiles, comprising:
 a tubing hanger defining a radial passage and comprising a radially movable locking element and an axially movable actuator for moving the locking element of the tubing hanger into engagement with the lower profile of the treehead;   an internal tree cap having a radially movable locking element and an axially movable actuator for moving the locking element of the internal tree cap into engagement with the upper profile of the treehead; and   a linking assembly for coupling the tubing hanger and the internal tree cap.