Explore the Energy Glossary

The process of creating a wellbore by mechanically cutting through subsurface formations.

A well intentionally deviated from vertical to reach a subsurface target.

A measure of how sharply a wellbore changes direction expressed in degrees per 100 feet.

Thick-walled tubulars that provide weight on bit and stiffness.

Hollow steel pipe that transmits rotation torque and drilling fluid to the bit.

The complete assembly of drill pipe drill collars and downhole tools.

A motor powered by drilling fluid to rotate the bit independently.

The cutting tool used to break rock at the bottom of the well.

Fluid circulated through the well to cool the bit remove cuttings and control pressure.

A device that measures pressure temperature vibration inclination or toolface.

The complete system used to drill a well.

Data-driven analysis of drilling performance and inefficiencies.