18 July 2017

Bug blowers

A large fan installed on a drilling rig to blow insects away from the work area.
25 July 2017

Bull’s eye

A mechanical slope indicator that consists of a ball rolling on a calibrated surface within a liquid filled enclosure that gives a visual indication of the […]
18 July 2017

Bullet perforator

A tubular device that, when lowered to a selected depth within a well, fires bullets through the casing to provide holes through which the formation fluids […]