Geosciences Case Studies

HEAVE COMPENSATED DRILLING

2008

Thanet Windfarm
GL 75 heave compensated drill rig was cantilevered over the side of the Pontra Maris, a barge with 5 point mooring. Campaign of PQ coring and composite boreholes with alternate wireline CPT and sampling in chalk down to  45  metres.
PS logging and on board laboratory

Sheringham Shoal windfarm
GL 75 heave compensated drill rig was cantilevered off UR 101, a barge with 4 point mooring. Campaign of PQ coring and composite boreholes with alternate wireline CPT and sampling in chalk down to  50 metres.
PS logging and on board laboratory

Walney Windfarm
GL 75 heave compensated drill rig was cantilevered over the site of the DP2 vessel the Fennica. Wireline CPT and drilling in shallow water drilling down to 46 metres below seabed. The sampling was carried out offshore in a mobile laboratory.

2009

Drilling campaign offshore Ivory Coast.
GL 75 heave compensated drill rig and Wireline CPT were mounted over the moonpool to carry out boreholes of 45 metres in water depths of up to 100 metres. Part of the campaign was carried out next to a working platform.

GEOTECHNICAL SERVICES FROM THIRD PARTY VESSELS

Cable Route Survey
Cable Route survey undertaken in Denmark.

LNG Pipeline Route, West Australia
Offshore site investigation in Western Australia for an LNG pipeline route.

Site Investigation
Site investigation at a proposed jack-up and storage facility.

Sea of Okhotsk
Provision of CPT and seismic equipment and expertise in performing a series of downhole tests.

Seabed technologies at Birkenhead
Deployment of the 10 Tonne ROSON sea bed penetrometer to determine the depth to a concrete base.

Seismic Cone Testing
Seismic cone testing in Venezuela.

Harbour Investigation
Site investigation at a major natural harbour on the South coast of England.

International Projects