25 July 2017

Geolograph

Patented device which records the rate of penetration during drilling operations. Sometimes referred to as a “tattletale.”
18 July 2017

Geology

The science of the physical history of the earth and its life, especially as recorded in the rocks of the crust.
18 July 2017

Going in the hole

Lowering the drill stem into the wellbore.
25 July 2017

Graveyard tour (pronounced “tower”)

The shift of duty on a drilling rig that starts at midnight. Sometimes called the morning tour.