Description
To pierce the casing wall and cement to provide holes through which formation fluids may enter or to provide holes in the casing so that materials may be introduced into the annulus between the casing and the wall of the borehole. Perforating is accomplished by lowering a perorating gun, or perforator, into the well; the perforator fires electrically detonated bullets or shaped charges.
Source :
Alpha Thames Ltd 2004