Patent ID: 8544539
Filing Date: 2013-10-01
Classification: E21B

Abstract:
1. A system comprising: a casing head; a tubing hanger disposed within the casing head and supported by a first retaining feature of the casing head, wherein the tubing hanger is configured to support a tubing string; a guide string hanger disposed within the casing head and supported by a second retaining feature of the casing head independent of the first retaining feature, wherein the guide string hanger is configured to support a guide string; and an anti-rotation feature configured to block rotation and translation of the guide string hanger relative to the casing head, wherein the anti-rotation feature comprises a plug that extends into a first recess in a radial direction relative to a longitudinal axis of the casing head, and the anti-rotation feature interfaces with both the guide string hanger and the casing head.