Offshore pipeline installation start-up 1

[ek4putr4]

Dear all,

What is the pros and cons of using single cable mooring attached to one of the platform jacket leg for start-up of offshore pipeline laying?

 

[narenr]

Pros:
1] Easy to install
2] Flexible to manoveure the barge
3] Easy to connect the fuse soft rope

Cons:
1] Too much load at one point on the jacket leg
2] Larger tolerance on the target point
3] Target point would much away from the jacket base requiring longer riser tie-in spool
4] Most operators would not allow

Narendranath R
Pipeline engineering is made easy with state of the art computer software, visit

http://www.narendranath.itgo.com.

 

[ek4putr4]

tx naren,

is there any bad effect to the linepipe itself, i.e. stress, span length, fatigue, etc. ?

 

[narenr]

ekaputra,

The installation analysis will take care of the stresses.



Narendranath R
Pipeline engineering is made easy with state of the art computer software, visit

http://www.narendranath.itgo.com.

 

[OilAG]

ek4putr4... it should be calculated when you do your stinger and offramp calcs