Installation of Offshore Structures

            

Yammaderry And Cowle Joint Development Project
West Australian Petroleum Pty Limited 1991
Offshore Thevenard Island, NW Australia

The installation, hookup and commissioning work was undertaken by WAPET
in-house using a team led by current ICON Engineering Directors. The
substructure was lifted from the transportation supply vessel horizontally
and upended using the rig's draw works. The structures were installed into
foundation holes drilled using reverse circulation techniques. They were then
grouted into place.