Sentences with percussion drilling
per·cus·sion drill·ing
P p - Percussion drilling is carried out by breaking up the formation by repeated blows of a heavy bit or a chisel inside a casing pipe.Percussion drilling is accomplished by crushing the rock with heavy blows delivered by a heavy chisel-shaped bit suspended on a cable.Percussion drilling is a drilling method which involves lifting and dropping heavy tools to break rock, and uses steel casing tubes to stop the borehole from collapsing.