Drill bit (well) In the oil and gas industry, a drill bit is a tool designed to produce a generally cylindrical hole (wellbore) in the earthâs crust by the rotary drilling method for the discovery and extraction of hydrocarbons such as crude oil and natural gas. This type of tool is alternately referred to as a rock bit, or simply a bit.
verifier - someone who vouches for another or for the correctness of a statement. voucher. admirer, booster, protagonist, supporter, champion, friend - a person who backs a politician or a team etc.; all their supporters came out for the game; they are friends of the library. Translations.
For simplicity, some air purifiers - such as Haverhill air purifiers - use one combination filter as the only filter that needs to be replaced. In addition, other types of air purifiers, such as our AirFree air sterilizers, use heat or ultraviolet light to purify your air and kill germs and allergens.