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offshore drilling

There are various types of underwater oil drilling installations; the one used depends on the location of the deposit and the depth of the water.
offshore drilling Ship for drilling for oil in deep water (3,300 ft and more); it is more mobile but less stable than a semisubmersible or jack-up platform. Movable structure that is anchored to the seabed and used at depths of 350 to 1,650 ft; it is mounted on pontoons submerged at about 100 ft to provide stability. Structure that is mainly used at moderate depths (up to 1,300 ft); it rests on the seabed on pillars buried deep in the sea floor. Structure that extends into the sea from a land-based installation; it is used for land drilling extending offshore (about 10 ft deep). Floating structure equipped with specialized equipment; it is used for rescue operations on drilling rigs. Movable structure that is used in shallow water (between 65 and 330 ft); it is raised above sea level on retractable pillars resting on the ocean floor.

See Also


drill ship

production platform

drilling rig

drill ship

Ship for drilling for oil in deep water (3,300 ft and more); it is more mobile but less stable than a semisubmersible or jack-up platform.
drill ship
drill ship

semisubmersible platform

Movable structure that is anchored to the seabed and used at depths of 350 to 1,650 ft; it is mounted on pontoons submerged at about 100 ft to provide stability.
production platform
production platform

fixed platform

Structure that is mainly used at moderate depths (up to 1,300 ft); it rests on the seabed on pillars buried deep in the sea floor.

pier

Structure that extends into the sea from a land-based installation; it is used for land drilling extending offshore (about 10 ft deep).

emergency support vessel

Floating structure equipped with specialized equipment; it is used for rescue operations on drilling rigs.

jack-up platform

Movable structure that is used in shallow water (between 65 and 330 ft); it is raised above sea level on retractable pillars resting on the ocean floor.