drilling fluid

noun
variants: or drilling mud

Definition of drilling fluid

: a mixture of clay and other chemicals with oil or water that is circulated around the drill bit in oil-well drilling in order to lubricate and cool the bit, flush rock cuttings to the surface, and plaster the side of the well to prevent cave-ins

First Known Use of drilling fluid

1913, in the meaning defined above

Keep scrolling for more

Learn More about drilling fluid

Time Traveler for drilling fluid

Time Traveler

The first known use of drilling fluid was in 1913

See more words from the same year

Statistics for drilling fluid

Cite this Entry

“Drilling fluid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/drilling%20fluid. Accessed 26 Jan. 2021.

Comments on drilling fluid

What made you want to look up drilling fluid? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
 AlphaBear 2

Spell words. Make bears.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!