Systems and methods for mitigating annular pressure buildup in an oil or gas well

The present invention is generally directed to systems and methods for mitigating temperature-related pressure buildup in the trapped annulus of an oil or gas well, wherein such systems and methods employ production and/or tieback casing having one or more pressure mitigating chambers, and wherein such chambers make use of pistons, valves, and burst disks to mitigate pressure increases within the annulus. Such systems and methods can provide advantages over the prior art, particularly with respect to offshore wells.