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Offshore Jacket Installation Guide

The document outlines the steps for installing a jacket structure. It involves multiple transportation spreads to mobilize the jacket, piles, and conductors to the site. The jacket is then offloaded from a cargo barge and installed on the seabed using a lift vessel. Piles are installed on the jacket using a lift vessel. Conductors are then attached to the piles, completing the installation. The transportation spreads are then demobilized.

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Nath Yau
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1K views1 page

Offshore Jacket Installation Guide

The document outlines the steps for installing a jacket structure. It involves multiple transportation spreads to mobilize the jacket, piles, and conductors to the site. The jacket is then offloaded from a cargo barge and installed on the seabed using a lift vessel. Piles are installed on the jacket using a lift vessel. Conductors are then attached to the piles, completing the installation. The transportation spreads are then demobilized.

Uploaded by

Nath Yau
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Jacket Installation

Installation Spread Transportation Spread A Transportation Spread B Transportation Spread C


BOKALIFT Jacket Piles & Transition Pieces Conductors

A
Transit to site & Dynamic Transportation Spread Transportation Spread Transportation Spread
Positioning Trails Mobilization Mobilization Mobilization

Pre-installation Survey B Load-Out & Sea fastening of Load-Out & Sea fastening of Load-Out & Sea fastening of
C Jacket on Cargo Barge Piles on Cargo Barge Conductors on Cargo Barge

Transit to Site Transit to Site Transit to Site

Cargo Barge Berthing B B


CB Berthing & Personnel
alongside Installation
Transfer on CB C
Vessel C

Jacket Sea fastening Cutting


& Rigging Connection

Jacket Horizontal Lift,


Jacket Offloading from
Upending & Setting down
Cargo Barge
on seabed

Cargo Barge Release &


Cargo Barge Unberthing
Personnel Recovery

Cargo Barge Berthing


Piles Sea fastening Cutting
alongside Installation
& Transfer to Bokalift Deck
Vessel
Transit to Port
Piles Installation Piles Offloading from Cargo
Barge to Installation Vessel
Demobilization of
Deck
Transportation Spread

Cargo Barge Release &


Cargo Barge Unberthing
Personnel Recovery

D
Conductors Piles Sea
Jacket Levelling, Cargo Barge
fastening Cutting &
Crown Shims Welding Unberthing alongside
Transfer on Bokalift
& Pile final cut-off Installation Vessel
Deck
Transit to Port
Conductors Piles
Transition Piece Conductors Piles Offloading from Cargo
Installation Installation Barge
Demobilization of
Transportation Spread
Cargo Barge Release & Cargo Barge
Personnel Recovery Unberthing

Jacket Legs/Piles Grouting E Transit to Port

Post-installation Survey Demobilization of


Transportation Spread

Move to next location

Completed

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