North Sea oil is a mixture of hydrocarbons, comprising liquid petroleum and natural gas, produced from petroleum reservoirs beneath the North Sea.
An oil platform in Mittelplate, Wadden Sea
A 'Statfjord' gravity-based structure under construction in Norway. Almost all of the structure was submerged.
A petroleum reservoir or oil and gas reservoir is a subsurface accumulation of hydrocarbons contained in porous or fractured rock formations. Such reservoirs form when kerogen is created in surrounding rock by the presence of high heat and pressure in the Earth's crust.
An oil field with dozens of wells. This is the Summerland Oil Field, near Santa Barbara, California, before 1906
Vučkovec Gas Field facility, Croatia
The drillship Discoverer Enterprise is shown in the background, at work during exploratory phase of a new offshore field. The Offshore Support Vessel Toisa Perseus is shown in the foreground, illustrating part of the complex logistics of offshore oil and gas exploration and production.