Tampão de cimento feito para abandono de um poço, temporário ou permanente.
Meaning
an "abandonment plug" refers to a mechanical device that is used to permanently seal a wellbore or a section of a well that is no longer producing oil or gas. When a well is no longer economically viable, it is often abandoned and the wellbore is plugged to prevent any oil or gas from leaking out and potentially causing environmental damage.