1. 油矿：oilextractionoilrecovery 采油 | oilfield 油矿 | oilgear 润滑齿轮

2. (海上)油田：oceantowing 海上拖驳运输,海上拖带 | oilfield (海上)油田 | oilrig 油井钻探设备

noun

1. a region rich in petroleum deposits (especially one with producing oil wells)