New pipe-lay method proposed for under water

Journal Article · Sun Mar 30 23:00:00 EST 1980 · Oil Gas J.; (United States)

OSTI ID:5576656

The ''ice-hole bottom pull'' technique of pipelaying, developed by Polar Gas Ltd. for the laying of pipe across M'Clure Strait between Melville and Victoria Islands, Can., since the ice at some points is too thick to allow installation of a continuous trench, is described in detail, including the drilling of holes 2 km apart and insulating them to prevent refreezing; pulling the pipe from hole to hole via a series of increasingly heavy cables; undersea welding of the pipe after it is pulled into place; and the need to lay pipe in a tunnel at least 45 m below the sea bottom near shore and in other areas subject to ice scour, where the pipe could be damaged by exceptionally thick ice.

• OSTI ID: 5576656
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 78:13; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000 -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
CABLES
CANADA
DAMAGE
DRILLING
FABRICATION
FREEZING
ICE
INSTALLATION
JOINING
NORTH AMERICA
PIPELINES
PIPES
TECHNOLOGY ASSESSMENT
TECHNOLOGY UTILIZATION
THERMAL INSULATION
UNDERWATER OPERATIONS
USES
WELDING