Definition - What does Lubricator mean?
A lubricator is a device that applies a substance such as oil or grease to moving parts so that the friction between the contacting surfaces of the two moving parts is reduced and they can operate smoothly. The heat generated due to friction is also reduced, which leads to less wear and tear and a longer lifespan for the moving parts and the machine.
Petropedia explains Lubricator
In order to ensure smooth operations and a longer operating life for the devices and tools in the oil and gas industry, the moving parts within tools must be lubricated. Lubricators are devices that dispense a lubricant to reduce the friction between the moving parts.
In the case of oil or gas well drilling activity, the drilling fluid or mud makes drilling comparatively smooth and cools the drill bit, thus the fluid acts as a lubricator. It also protects the parts against wear and tear and corrosion.