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How are oil and gas extracted from under the sea bed?
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Crude oil and natural gas occur in 'pockets' under the ground. Sometimes the deposits are found under the sea bed. Like other deposits, they are extracted by drilling a hole down through the rocks into the oil or gas. For undersea deposits, the drills are mounted on a platform called a drilling rig. The oil or gas is usually pumped ashore through pipelines. | | Hundreds of people work on a large oil rig. They are carried to and from the rig by helicopter. |
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Previous:
Back
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Book:
1001
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Section:
Science and Technology
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Chapter:
Industry
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