| CPC E21B 33/1208 (2013.01) | 20 Claims |

|
1. An apparatus comprising:
a clamshell packer configured to clamp around a coupling between a first tubular and a second tubular of a tubing string to be positioned in a wellbore proximate to a subsurface formation, wherein the clamshell packer includes,
an expandable non-elastomeric material,
a first portion having a first inner diameter configured to clamp around the first and second tubulars, and
a second portion having a second, larger inner diameter configured to clamp around the coupling.
|