Project reports
28 December 2014 |   ByJeff James
Fugro Author

With plans in place to develop a regasification terminal for LNG in the Philippines, Shell Projects & Technology appointed Fugro as main contractor for a comprehensive site investigation. The project work, which also included a laboratory testing programme, was completed at Shell’s LNG terminal in Batangas City between March 2013 and January 2014.

To support Shell’s development plans for the first LNG import terminal in the Philippines, Fugro undertook a programme of onshore geotechnical, geophysical and topographic surveys as well as nearshore geophysical surveys. Drawing on its global resources, it mobilised specialist staff and equipment from its bases in the UK, France, Hong Kong, Singapore and Vietnam.

Surface magnetometry and magnetometer CPT probing ensured the forty-hectare site was free of UXO prior to the commencement of ground investigations. Geophysical and geotechnical surveys were undertaken and soil and rock samples were then tested at Fugro’s laboratory in Singapore.

With an FSRU (Floating Storage and Regasification Unit) identified as Shell’s preferred development, Fugro’s workscope included a programme of nearshore geophysical surveys for the proposed jetty and pipeline route and also in the inter-tidal zone. Multibeam echo sounding, sparker sub-bottom profiling, side scan sonar surveys and marine magnetometer surveys were carried out in water depths of up to 25 metres.

A topographic survey of the onshore site and the inter-tidal zone produced site benchmarks and control points for the future works which were tied in to WGS (World Geodetic System) and national survey grids.

Geotechnical Surveys Included

  • Electrical resistivity tomography
  • Seismic refraction tomography/MASW
  • Electromagnetic conductivity and magnetometry
  • 34 CPTs to depths of 40 metres
  • In situ seismic soundings at 1 metre intervals
  • 29 drillholes, with associated undisturbed sampling and in situ soil testing, sunk by rotary drilling techniques to depths of 70 metres
 

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