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underpressure

1. n. [Geology]

Pore pressure less than normal or hydrostatic pressure. Underpressure, or a zone of underpressure, is common in areas or formations that have had hydrocarbon production.

Antonyms: overpressure

See: abnormal pressureformationhydrostatic pressurenormal pressurepore pressureproduction

Pressure versus depth plot
Pressure versus depth plot.

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