Rcd hydraulic stripping adapter

Abstract

An adjustable sealing device including a housing configured to be engaged within an annulus of a rotating control device, at least one sealing element disposed within the housing, and a variable pressure control device configured to energize a fluid disposed within the housing to maintain a seal between the sealing element and a drill string is disclosed. A method of sealing a wellbore, the method including providing an adjustable sealing device to a rotating control device, positioning at least one sealing element of the adjustable sealing device between the wellbore and a drill string, tripping the drill string through the wellbore, sensing changes in a diameter of the drill string as it is tripped, and regulating a fluid pressure to maintain a seal between the at least one sealing element and the drill string when the drill string is tripped through the at least one sealing element is also disclosed.

1 . An adjustable sealing device, comprising:
 a housing configured to be engaged within an annulus of a rotating control device;   at least one sealing element disposed within the housing; and   a variable pressure control device configured to energize a fluid disposed within the housing to maintain a seal between the sealing element and a drill string.   
     
     
         2 . The adjustable sealing device of  claim 1 , wherein the fluid is a hydraulic fluid. 
     
     
         3 . The adjustable sealing device of  claim 1 , further comprising a pressure transfer ring located in the housing between the fluid and the at least one sealing element. 
     
     
         4 . The adjustable sealing device of  claim 1 , wherein the at least one sealing element comprises a deformable material. 
     
     
         5 . The adjustable sealing device of  claim 1 , further comprising at least one sensor configured to detect a diameter of the drill string. 
     
     
         6 . The adjustable sealing device of  claim 5 , wherein a pressure of fluid within the housing is regulated when the at least one sensor detects a change in a diameter of the drill string passing through the adjustable sealing device. 
     
     
         7 . The adjustable sealing device of  claim 1 , wherein the at least one sealing element is removeably disposed within the housing. 
     
     
         8 . A rotating control device, comprising:
 an adjustable sealing device installed in an annulus between a drill string and a wellbore, the adjustable sealing device comprising:
 a housing; 
 at least one sealing element disposed within the housing; and 
 a variable pressure control device configured to energize a fluid disposed within the housing to maintain a seal between the sealing element and the drill string. 
   
     
     
         9 . The rotating control device of  claim 8 , wherein the sealing element comprises a deformable material. 
     
     
         10 . The rotating control device of  claim 8 , further comprising at least one sensor configured to detect a diameter of the drill string passing through the adjustable sealing device. 
     
     
         11 . The rotating control device of  claim 10 , wherein a pressure of the fluid is regulated when the at least one sensor detects a change in the diameter of the drill string. 
     
     
         12 . A method of sealing a wellbore, comprising:
 providing an adjustable sealing device to a rotating control device;   positioning at least one sealing element of the adjustable sealing device between the wellbore and a drill string;   tripping the drill string through the wellbore;   sensing changes in a diameter of the drill string as it is tripped; and   regulating a fluid pressure to maintain a seal between the at least one sealing element and the drill string when the drill string is tripped through the at least one sealing element.   
     
     
         13 . The method of  claim 12 , wherein the fluid pressure is increased as a smaller diameter of the drill string is sensed. 
     
     
         14 . The method of  claim 12 , wherein the fluid pressure is decreased as a larger diameter of the drill string is sensed. 
     
     
         15 . The method of  claim 12 , further comprising installing diameter sensors above and below the at least one sealing element.