Definition(s)
Maximum Expected Wellbore Shear Pressure (MEWSP)
The expected pressure for a given hole section, a specific shear pressure requirement, specific operating piston design, and material specification, to shear drill pipe or tubing at MASP (surface), MAWHP (subsea), or other pressure limiting value.
Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards