underbalanced

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English[edit]

English Wikipedia has an article on:
Wikipedia

Etymology[edit]

under- +‎ balanced

Adjective[edit]

underbalanced (not comparable)

  1. Describing a method of drilling for petroleum in which the pressure in the wellbore is kept lower than that of the formation being drilled, thus allowing fluid to enter the well as soon as it is found.

See also[edit]

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