The bit is on the bottom of the drill string and must be changed when it becomes excessively dull or stops making progress. Most bits work by scraping or crushing the rock, or both, usually as part of a rotational motion. Some bits, known as hammer bits, pound the rock vertically in much the same fashion as a construction site air hammer.*
Paired with the right technology, equipment and rig crews, drilling rigs have the capability to drill miles below the earth’s surface into tough formations. Learn more about rig upgrades we have underway to allow our rigs to drill deeper than ever before.
*Denotes definition from Schlumberger Oilfield Glossary