Fluted rotating tubing hanger for cemented completion applications - btf hanger

Abstract

A hydrocarbon production system including a casing hanger positioned within a casing head spool, a casing attached to the casing hanger and cemented into the wellbore, and a production tubing hanger positioned within a tubing head spool above the casing head spool. The production tubing hanger includes a rotating inner mandrel within a non-rotating housing. The rotating inner mandrel includes a mandrel collar in contact with a bearing positioned between the rotating inner mandrel and the non-rotating housing. The non-rotating housing includes flutes integrally formed into a first end of the non-rotating housing to improve fluid flow. Upper seal element and lower seal elements are positioned within an annular space between the rotating inner mandrel and the non-rotating housing. A production tubing string is positioned within the casing, where the production tubing string is rotated by rotating a landing joint attached to an upper end of the rotating inner mandrel.

What is claimed: 
     
         1 . A method comprising:
 positioning a casing into a wellbore;   pumping cement through the casing to cement the casing in the wellbore;   positioning a casing hanger within a casing head spool that is part of a surface wellhead assembly at an uphole end of the wellbore, wherein the casing hanger is attached to an uphole end of the casing;   positioning a production tubing string within the casing within the wellbore, the production tubing string comprising a plurality of production tubing segments;   attaching an uphole end of the production tubing string to a lower end of a rotating inner mandrel of a production tubing hanger, wherein the production tubing hanger is configured be positioned within a tubing head spool positioned above the casing head spool within the surface wellhead assembly, wherein the rotating inner mandrel is configured to rotate within a non-rotating housing of the production tubing hanger, and wherein the non-rotating housing of the production tubing hanger is fluted;   rotating the production tubing string by rotating a landing joint attached to an upper end of the rotating inner mandrel, wherein the landing joint comprises a production tubing segment; and   while rotating the production tubing string, pumping cement through the production tubing string to at least partially cement the production tubing string within the wellbore.   
     
     
         2 . The method of  claim 1 , further comprising rotating the production tubing string before landing the production tubing string at a final depth by rotating the rotating inner mandrel with the landing joint before positioning the production tubing hanger within the tubing head spool. 
     
     
         3 . The method of  claim 1 , further comprising producing hydrocarbons through the production tubing string, wherein produced hydrocarbons are in contact with an interior surface of the production tubing string. 
     
     
         4 . The method of  claim 1 , wherein the production tubing hanger further comprises a plurality of anti-rotation locks within the non-rotating housing which limit rotation of the rotating inner mandrel to one of a clockwise direction or a counterclockwise direction. 
     
     
         5 . The method of  claim 4 , wherein the plurality of anti-rotation locks comprises a plurality of wedge-shaped profiles within the non-rotating housing. 
     
     
         6 . The method of  claim 1 , wherein the rotating inner mandrel further comprises a mandrel collar extending circumferentially from an outer surface of the rotating inner mandrel, and wherein the production tubing hanger further comprises:
 a bearing in contact with the mandrel collar and positioned between the rotating inner mandrel and the non-rotating housing;   an upper seal element and a lower seal element positioned within the production tubing hanger and within an annular space between the rotating inner mandrel and the non-rotating housing, the upper seal element positioned above the mandrel collar and the lower seal element positioned below the mandrel collar.   
     
     
         7 . The method of  claim 1 , wherein the landing joint is attached to the rotating inner mandrel with threads. 
     
     
         8 . The method of  claim 1 , wherein a bottom portion of the production tubing string is cemented into the wellbore, thereby forming a partially cemented long-string completion. 
     
     
         9 . A hydrocarbon production system comprising;
 a casing hanger positioned within a casing head spool that is part of a surface wellhead assembly at an uphole end of a wellbore;   a casing cemented into the wellbore, wherein an upper end of the casing is attached to the casing hanger;   a production tubing hanger configured to be positioned within a tubing head spool positioned above the casing head spool within the surface wellhead assembly, wherein the production tubing hanger comprises:   a rotating inner mandrel within a non-rotating housing, the rotating inner mandrel comprising a mandrel collar extending circumferentially from an outer surface of the rotating inner mandrel and in contact with a bearing positioned between the rotating inner mandrel and the non-rotating housing,   wherein the non-rotating housing comprises one or more flutes integrally formed into a first end of the non-rotating housing, wherein the one or more flutes are configured to improve fluid flow;   an upper seal element and a lower seal element positioned within the production tubing hanger and within an annular space between the rotating inner mandrel and the non-rotating housing, the upper seal element positioned above the mandrel collar and the lower seal element positioned below the mandrel collar; and   a production tubing string positioned within the casing, wherein an upper end of the production tubing string is attached to a lower end of the rotating inner mandrel, wherein the production tubing string comprises a plurality of production tubing segments, and wherein the production tubing string is at least partially cemented into the wellbore by pumping cement into the production tubing string while the production tubing string is rotated, and wherein rotation of the production tubing string is by rotating a landing joint comprising a production tubing segment attached to an upper end of the rotating inner mandrel.   
     
     
         10 . The hydrocarbon production system of  claim 9 , wherein the production tubing hanger further comprises a plurality of anti-rotation locks within the non-rotating housing which limit rotation of the rotating inner mandrel to one of a clockwise direction or a counterclockwise direction. 
     
     
         11 . The hydrocarbon production system of  claim 10 , wherein the plurality of anti-rotation locks comprises a plurality of wedge-shaped profiles within the non-rotating housing. 
     
     
         12 . The hydrocarbon production system of  claim 9 , wherein the landing joint is attached to the rotating inner mandrel with threads. 
     
     
         13 . The hydrocarbon production system of  claim 9 , further comprising tie bolts to lock the production tubing hanger within the tubing head spool. 
     
     
         14 . The hydrocarbon production system of  claim 9 , wherein a bottom portion of the production tubing string is cemented into the wellbore, thereby forming a partially cemented long-string completion. 
     
     
         15 . The hydrocarbon production system of  claim 9 , wherein hydrocarbons are produced through the production tubing string, wherein produced hydrocarbons are in contact with an interior surface of the production tubing string. 
     
     
         16 . A production tubing hanger, comprising:
 a non-rotating housing, comprising one or more flutes integrally formed into a first end of the non-rotating housing, wherein the one or more flutes are configured to improve fluid flow;   a rotating inner mandrel disposed within the non-rotating housing;   a bearing section configured to rotate the rotating inner mandrel within the non-rotating housing;   a rotation lock;   one or more upper seal elements disposed in an annulus formed between the non-rotating housing and the rotating inner mandrel; and   one or more lower seal elements disposed in the annulus formed between the non-rotating housing and the rotating inner mandrel.   
     
     
         17 . The production tubing hanger of  claim 16 , further comprising a tubing string extending through the rotating inner mandrel. 
     
     
         18 . The production tubing hanger of  claim 16 , wherein the rotation lock is configured to limit rotation of the rotating inner mandrel to one of a clockwise direction or a counterclockwise direction. 
     
     
         19 . The production tubing hanger of  claim 16 , wherein the rotation lock is configured to optionally back-off a landing joint. 
     
     
         20 . The production tubing hanger of  claim 16 , wherein the one or more upper seal elements and the one or more lower seal elements are configured to protect the rotating inner mandrel from dust and debris.