Method and system for well access to subterranean formations

Abstract

The invention provides a method and system for accessing a well to subterranean formations in which a first well control assembly is directly associated with the well and a second well control assembly is remotely and capable of being in fluid communication with the well.

1 . A well comprising a first well control assembly directly associated with the well and a second well control assembly remotely and capable of being in fluid communication with the well. 
     
     
         2 . A subsea well system comprising two or more independent pressure control assemblies on or near the seafloor. 
     
     
         3 . The offshore well system of  claim 1  wherein the well control assemblies are spaced apart by at least 200 meters. 
     
     
         4 . The offshore well system of  claim 1  wherein at least one well control assembly is a blowout preventer. 
     
     
         5 . The offshore well system of  claim 1  wherein at least one well control assembly is a christmas tree. 
     
     
         6 . The offshore well system of  claim 1  wherein each well control assembly is connected to a wellhead. 
     
     
         7 . A method of providing multiple means of entry to a well connecting the surface with subterranean formations comprising:
 carrying out operations for drilling., completing, producing, servicing, or logging data; and   utilizing multiple independent well control assemblies associated with the well, each well control assemblies having at least one well entry pathway substantially at or near the well surface.