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.
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