18 July 2017

Drilling in

The process of drilling into the oil or gas reservoir.
18 July 2017

Drilling line

A wire rope used to support the drilling tools. Also called the rotary line.
18 July 2017

Drilling out

Refers to drilling out of the residual cement which normally remains in the lower section of casing and the wellbore after the casing has been cemented.
18 July 2017

Drilling rate

The speed with which the bit drills the formation; usually called the rate of penetration.