What actions should be taken during a shut-in procedure if surface pressure continues to increase after initial closure?

If surface pressure continues to increase after the initial closure during a shut-in procedure, it indicates that the influx of formation fluids into the wellbore is continuing or that the wellbore pressure is rising due to other factors, requiring immediate action to prevent a potential blowout. The first action is to verify the accuracy of the pressure gauges. A faulty gauge can give a false reading. If the gauges are verified as accurate, the next step is to ensure that the Blowout Preventer (BOP) stack is properly sealed. Check all BOP elements (annular preventer, pipe rams....