Definition:
Knuckle Joint
Subject Area 1:
Logging & petrophysics
Subject Area 2:
A tool name
Remarks:
The Knuckle Joint allows sections of a logging string to be changed from centralised to decentralised in order to ensure that all sensors have the optimal position in the well bore. This may be particularly important when, for example, a CCL needs to be decentralised to get better collars, but the fluid density and fullbore flowmeter still require to be centralised.