A Great Southern Press Site
Advertisement
Username:   Password: Forgot Password?

« Back to Resource Centre

Jump To:

Offshore


Large resources of oil and gas are located offshore. Pipelines are often used to develop these offshore fields, used for both gathering lines in between subsea wells and as transportation to the mainland for commercial processing.

Offshore pipeline projects involve a different set of challenges to their onshore counterparts as discoveries are often made in remote locations, in deep water with hostile conditions. Some planned pipelines traverse unexplored waters, requiring extensive seabed surveys to determine appropriate route and design.

Construction of offshore pipelines is also considerably different to onshore, with pipe welded on a moving pipelay vessel before being lowered to the seabed. The most common methods for completing this are the ‘S-lay’ and ‘J-lay’ techniques.

The ‘S-lay’ method involves welding the pipe horizontally and lowering it into the sea supported by a curved pontoon structure known as a stinger, which forms an elongated ‘S’. It can be used for both shallow water and deepwater pipelines up to a depth of 3,000 m.

The ‘J-lay’ method involves vertical pipe welding and pipe lowering without the use of a support structure, forming a ‘J’ shape. This system is used to lay pipelines at depths between 400 and 3,500 m.
More Less

Latest News

Icom releases water-friendly radios

Icom Australia has released its IC-M91D and IC-M432 radios, which are designed to make communications on the water easier and more intuitive.
 
Varanus Island report released

The final investigation report into the Varanus...

New system offers safer, faster, more efficient hot tapping

T.D. Williamson has successfully developed and ...

More
 

Related Companies

Savcor Products Australia Pty Ltd
Rowville, VIC, Australia
 
PII Pipeline Solutions, a GE Oil & Gas and Al Shaheen joint venture
Parramatta, NSW, Australia
 
UT Quality
Cooroibah, QLD, Australia
 
Clough Ltd
Milton, QLD,
 
Emerson Process Management
Bayswater, VIC, Australia
 
More

Related Events

APIA WA Chapter Christmas Lunch

Royal Perth Yacht Club
 

APIA Brisbane Christmas Lunch

Brisbane Hilton
 
More

Basket is empty.
 

Advertisement Advertisement Advertisement Advertisement

Advertisement