oilfield

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

अकेले तेल क्षेत्र से ही नहीं, लेकिन ग़ैर तेल क्षेत्र से भी आया है।

These oilfields in the Arabian Sea, commonly known as Bombay High, produce crude oil and gas which are carried to the shore in undersea pipelines.