Performing a wellbore tieback operation

Abstract

A wellbore completion system and method having a tieback string and a seal system. The tieback string includes a receptacle end defining an inner diameter larger than an outer diameter of a liner. The liner is configured to be disposed within a wellbore and defines an annulus between an external surface of the liner and a wall of the wellbore. The receptacle end is configured to be disposed within the annulus to receive a portion of the liner. The seal system is coupled to an internal surface of the receptacle end. The seal system includes an annular seal configured to swell inwardly upon contact to a wellbore fluid having an oil-based fluid to form, with the portion of the liner inserted within the receptacle end, a seal with the external surface of the liner. The tieback string is fluidly coupled, with the seal formed, to the liner to receive production fluid from the liner.

Dependencies are inferred from the claim text.