Expansion Joints
Pipe expansion joints are necessary in systems that convey high temperature substances such as steam or exhaust gases, or to absorb movement and vibration. A typical joint is a bellows of metal (most commonly stainless steel), plastic, fabric (such as glass fibre) or an elastomer such as rubber.
Expansion joints are used to compensate for tubing movement that occurs due to changes in temperature, pressure, or both during normal well operations after the packer has been set. The joints maintain the pressure integrity of the tubing while allowing the string to safely expand and contract.
