1. an area of land or sea where oil is extracted from the ground in commercial quantities

Examples

• The oilfield in the North Sea has been productive for decades.
• Workers in the oilfield face challenging conditions and long hours.
• New technology has made it possible to extract oil from deeper oilfields.
• The discovery of a major oilfield boosted the country's economy.
• Environmental concerns surround the development of oilfields in sensitive ecosystems.
• Thousands of jobs depend on the oilfield industry in that region.