Well completion system with an annular bypass and a solid stopper means

Abstract

A well completion system having a spool tree body defining a vertical bore extending therethrough. The vertical bore defines an annular recess adjacent to the lateral production fluid outlet port in the spool tree body. A tubing hanger is connected to the spool tree body. The tubing hanger defines a vertical production bore extending therethrough and has at least a lateral production fluid flow port. The tubing hanger is positioned within the vertical bore such that the lateral production fluid flow port in the tubing hanger is in flow communication with the lateral production fluid outlet port in the spool tree body. There is a removable plug that seals the vertical production bore extending through the tubing hanger above the lateral production fluid outlet port in the spool tree body. A stopper means seals the vertical bore extending through the spool tree body above the removable plug. A workover port extends laterally through the spool tree body and penetrates into the vertical bore above the stopper means. A tubing annulus fluid flow port extends laterally through the spool tree body from beneath the second sealing means from a tubing annulus. The workover port and the tubing annulus fluid flow port are interconnected via an external loop line containing at least one valve.

We claim:  
     
         1 . A well completion system comprising: 
 a spool tree body having an inside surface defining a vertical bore extending therethrough, and having at least a lateral production fluid outlet port connected to a valve;    wherein the vertical bore defined by the inside surface of the spool tree body defines an annular recess therein extending circumferentially around the bore and being positioned adjacent to the lateral production fluid outlet port in the spool tree body;    a tubing hanger defining a vertical production bore extending therethrough and having at least a lateral production fluid flow port, said tubing hanger positioned within the vertical bore at a position at which the lateral production fluid flow port in the tubing hanger is in flow communication with the lateral production fluid outlet port in the spool tree body;    a removable plug sealing the vertical production bore extending through the tubing hanger above the lateral production fluid outlet port in the spool tree body;    a stopper means sealing the vertical bore above the removable plug;    wherein the tubing hanger is sealed to the vertical bore above the lateral production fluid outlet port by a first sealing means and below the lateral production fluid outlet port by a second sealing means;    a workover port extending laterally through the spool tree body and penetrating into the vertical bore above the stopper means; and    a tubing annulus fluid flow port extending laterally through the spool tree body from beneath the second sealing means and extending from a production tubing annulus defined by a wellhead casing tubular having an inner diameter and a production tubular having an outer diameter;    wherein the workover port and the tubing annulus fluid flow port are interconnected via an external loop line containing at least one valve.    
     
     
         2 . A system as in    claim 1   , further comprising a pressure monitor and bleed port having an inner diameter of about one half inch, said pressure monitor and bleed port extending laterally through the spool tree body in flow communication with a chamber defined between the tubing hanger first sealing means the removable plug and the stopper means, said pressure monitor and bleed port being connected to a valve means and monitor/bleed line.  
     
     
         3 . A system as in    claim 2   , wherein the pressure monitor and bleed port defines an inner diameter of about one half inch.  
     
     
         4 . A system as in    claim 1   , wherein the workover port comprises a bypass bore extending generally longitudinally through the spool tree body from the workover port to the external loop line.  
     
     
         5 . A system as in    claim 1   , wherein the removable plug is a wireline plug and the stopper means is a solid plug.  
     
     
         6 . A system as in    claim 5   , wherein the solid plug contains at least one opening closed by a wireline plug.  
     
     
         7 . A system as in    claim 1   , wherein the spool tree body is fixed and sealed to a wellhead housing.  
     
     
         8 . A wellhead as in    claim 1   , wherein the lateral production fluid outlet port in the tubing hanger is up to 180 degrees out of alignment with the corresponding lateral production fluid outlet port in the spool tree body.