Open hole gravel pack system for managed pressure drilling (mpd) applications

Abstract

A method of managing pressure in a wellbore having an annulus defined between a wall of the wellbore and a work string that includes drill pipe, a service tool, and a lower completion, the method comprising: performing the following operations, running the work string in hole down the wellbore while maintaining an annulus pressure while maintaining a hydrostatic pressure within the work string above a valve of the service tool, wherein the valve is configured to pressurize the annulus without pressurizing the work string.

1 . A method of managing pressure in a wellbore having an annulus defined between a wall of the wellbore and a work string that includes drill pipe, a service tool, and a lower completion, the method comprising:
 performing the following operations,
 running the work string in hole down the wellbore while maintaining an annulus pressure while maintaining a hydrostatic pressure within the work string above a valve of the service tool, wherein the valve is configured to pressurize the annulus without pressurizing the work string. 
   
     
     
         2 . The method of  claim 1 , wherein the valve is to be positioned below a crossover port of the service tool that is to provide fluid flow between an inner portion and an outer portion of the work string. 
     
     
         3 . The method of  claim 1 , wherein the valve is configurable to be opened to pump a fluid down the work string. 
     
     
         4 . The method of  claim 1 , wherein the valve is closed during the running of the drill pipe, the service tool, and the lower completion in hole down the wellbore to prevent collapse of an open hole portion of the wellbore. 
     
     
         5 . The method of  claim 1 , wherein performing the following operations comprises,
 in response to determining a forward circulation is needed to correct a wellbore issue prior to a gravel pack packer of the work string reaching a setting depth in the wellbore,
 flowing, via the valve, fluid down through the drill pipe and the service tool back up through the annulus. 
   
     
     
         6 . The method of  claim 5 , wherein the wellbore issue comprises at least one of well control, displacement, or washdown. 
     
     
         7 . The method of  claim 5 , wherein performing the following operations comprises,
 in response to the gravel pack packer reaching the setting depth in the wellbore, closing the back up pressure valve; and
 setting the gravel pack packer with pressure down the work string. 
   
     
     
         8 . The method of  claim 7 , wherein closing the valve comprises dropping an object down the drill pipe and onto the valve. 
     
     
         9 . The method of  claim 7 , wherein performing the following operations comprises,
 after setting the gravel pack packer,
 setting an open hole isolation packer; and 
 performing a gravel pack of the wellbore. 
   
     
     
         10 . The method of  claim 9 , wherein performing the following operations comprises,
 after setting the gravel pack packer,
 reversing out excess sand from the gravel pack; and 
 performing acid displacement of the wellbore to remove residual drilling or filter cake at or near the gravel pack. 
   
     
     
         11 . The method of  claim 1 , wherein the valve comprises a back pressure valve. 
     
     
         12 . The method of  claim 1 , wherein the valve comprises a remotely operable valve. 
     
     
         13 . A method comprising:
 managing pressure in a wellbore having an annulus defined between a wall of the wellbore and a work string that includes a drill pipe, a service tool and a lower completion, wherein managing the pressure in the wellbore comprises,
 performing the following operations,
 running the work string in hole down the wellbore while maintaining an annulus pressure in the annulus while maintaining a hydrostatic pressure within the work string above a valve of the service tool, wherein the valve is configured to pressurize the annulus without pressurizing the work string wherein the valve is closed during the running of the drill pipe, the service tool, and lower completion in hole down the wellbore. 
 
   
     
     
         14 . The method of  claim 13 , wherein the valve is to be positioned below a crossover port of the service tool that is to provide fluid flow between an inner portion and an outer portion of the work string. 
     
     
         15 . The method of  claim 13 , wherein the valve is configurable to be opened to pump a fluid down the work string. 
     
     
         16 . The method of  claim 13 , wherein performing the following operations comprises,
 in response to determining a forward circulation is needed to correct a wellbore issue prior to a gravel pack packer of the work string reaching a setting depth in the wellbore,
 flowing, via the valve, fluid down through the drill pipe and the service tool back up through the annulus, wherein the wellbore issue comprises at least one of well control, displacement, or washdown. 
   
     
     
         17 . The method of  claim 16 , wherein performing the following operations comprises,
 in response to the gravel pack packer reaching the setting depth in the wellbore,
 closing the valve; and 
 setting the gravel pack packer. 
   
     
     
         18 . The method of  claim 17 , wherein performing the following operations comprises,
 after setting the gravel pack packer,
 setting an open hole isolation packer; 
 performing a gravel pack of the wellbore; 
 reversing out excess sand from the gravel pack; and 
 performing acid displacement of the wellbore to remove residual drilling or filter cake at or near the gravel pack. 
   
     
     
         19 . The method of  claim 13 , wherein the valve comprises a back pressure valve. 
     
     
         20 . The method of  claim 13 , wherein the valve comprises a remotely operable valve. 
     
     
         21 . A method comprising:
 managing pressure in a wellbore having an annulus defined between a wall of the wellbore and a work string that includes a drill pipe, a service tool and a lower completion, wherein managing the pressure in the wellbore comprises,
 performing the following operations,
 running the work string in hole down the wellbore while maintaining an annulus pressure in the annulus while maintaining a hydrostatic pressure within the work string above a back pressure valve of the service tool, wherein the back pressure valve is configured to pressurize the annulus without pressurizing the work string, wherein the back pressure valve is above a crossover port of the service tool that is to provide fluid flow between an inner portion and an outer portion of the work string. 
 
   
     
     
         22 . The method of  claim 21 , wherein the back pressure valve is configurable to be opened to pump a fluid down the work string. 
     
     
         23 . The method of  claim 21 , wherein the back pressure valve is closed during the running of the drill pipe, the service tool, and the lower completion in hole down the wellbore. 
     
     
         24 . The method of  claim 21 , wherein performing the following operations comprises,
 in response to determining a forward circulation is needed to correct a wellbore issue prior to a gravel pack packer of the work string reaching a setting depth in the wellbore,
 flowing, via the back pressure valve, fluid down through the drill pipe and the service tool back up through the annulus, wherein the wellbore issue comprises at least one of well control, displacement, or washdown. 
   
     
     
         25 . The method of  claim 24 , wherein performing the following operations comprises,
 in response to the gravel pack packer reaching the setting depth in the wellbore,
 closing the back pressure valve; 
 setting the gravel pack packer; 
 after setting the gravel pack packer,
 setting an open hole isolation packer; 
 performing a gravel pack of the wellbore; 
 reversing out excess sand from the gravel pack; and 
 performing acid displacement of the wellbore to remove residual drilling or filter cake at or near the gravel pack.