Patent ID: 8561705

Claim:
A subsea wellhead assembly, comprising: a subsea wellhead having a bore containing a grooved profile; a casing hanger landed in the bore below the profile; a wear bushing that retrievably lands in the bore, shielding the profile and an inner part of the casing hanger from drilling tools that pass through the wear bushing; an impression block of a deformable material carried by the wear bushing; an actuator moveable in response to landing of the wear bushing that forces the impression block into the profile to cause the impression block to form an impression of the profile for subsequent inspection when the wear bushing is retrieved; wherein the wear bushing further comprises: a first tubular member having an axis; a second tubular member coaxial with the first tubular member and axially moveable between run-in and sat positions relative to the first tubular member: and wherein movement of the second tubular member to the set position causes the actuator to force the block into the profile to cause the impression block to form an impression of the profile for subsequent inspection when the wear bushing is retrieved.