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down dip

1. prep. [Geology]

Located down the slope of a dipping plane or surface. In a dipping (not flat-lying) hydrocarbon reservoir that contains gas, oil, and water,

  • gas is updip
  • gas-oil contact is downdip from the gas
  • oil-water contact is still farther downdip.

Antonyms: updip

See: dipgas-oil contactoil-water contact

Schematic cross section of updip and downdip.
Schematic cross section of updip and downdip.