It is typically carried out in order to explore for and subsequently extract petroleum that lies in rock formations beneath the seabed. Offshore oil rigs have developed greatly over the past years, and have become gigantic structures that house hundreds of people at a time. Nearly all offshore oil and natural gas leasing and development activity occurs in the central and western gulf of america, where thousands of platforms operate in waters up to 6,000 feet deep
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A few platforms operate in depths of 10,000 feet or more.
Offshore drilling is the process of extracting petroleum from reserves located beneath the earth's oceans instead of reserves located on the mainland
