underbalanced

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Adjective

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.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.