Oilfield - English meaning

noun

An area of land or seabed underlain by strata yielding mineral oil, especially in amounts that justify commercial exploitation.

Usage examples:

He also encouraged the exploration of the amazonian rainforest, which led to the subsequent exploit…

noun

An area under the earth's surface where there is a large amount of oil

Usage examples:

There's been no recent oilfield development, which will push up oil prices.