Offshore Drilling

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Offshore drilling and research has evolved with time, the demand for fossil fuel has really made geologist and engineers comb every area to look for ways to combat demand. Offshore oil extraction currently accounts for 37% of global production. Presently 28% of global gas production takes place offshore and this is increasing.(offshore natural gas and oil production was restricted to shallow waters such as the North sea or coastal areas around the US.(world ocean review.com). Since many older deposits have become exhausted, companies have increasingly moved into deeper waters. Separate depth categories are defined as: shallow water production water depth of less than 400 meters, deep-water production at depths up to 1500 meters and ultra deep-water production at depths greater than 1500 meters. With latest high-resolution geophysical exploration technology, scientists are now able to detect oil and gas deposits in the sea bed and other geological strata to a depth of 12 kilometers. Consequently, many major new deposits have been discovered or newly …show more content…
oil accounted for around 33% of world primary energy consumption in 2011, followed by coal and natural gas with around 30 and 24% respectively. The reminder comes from nuclear energy, hydro-power and other re-newables energy source such as solar and wind energy.

The figure shows global primary energy consumption in 2011.

Offshore oil fields can now be exploited at ever greater depth. New drilling techniques allow more oil to be pumped out of the deposits than before. Recent studies shows that 481 larger fields were found in deep and ultra-deep waters between 2007 and 2012, accounting for more than 50% of newly discovered larger oil fields.

A glance at the volumes of offshore oil and gas fields newly discovered between 2007 and 2012 clearly shows that the bulk of the resource is located at depths of more than

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