Offshore geophysical survey

Refraction and reflection seismic are geophysical methods used to investigate the structure of the geological medium both onshore and offshore. UHRS – Ultra High Resolution Seismic – offered by GT provides a highly accurate image of the geological structures underlying the seabed.

The data obtained using this method are used to determine geological conditions for the planning of offshore structures, such as exploration wells, wind farms, cables and connections locations or platforms placed on the seabed.

Combined with data from other engineering surveys, such as boreholes, CPT surveys, laboratory tests, etc., high-resolution seismic data provide an invaluable contribution to building a model of the deep geological structure at the project site, identifying risks associated with rock instability and thus reducing the investment risk of the planned project.

We offer our clients a service for the planning, acquisition, processing, and interpretation of recorded seismic data, with a particular focus on offshore geohazard assessment.

We have high-end seismic equipment that meets the high requirements of our clients. To obtain UHR standards, we use streamers with receiver intervals of the order of 1 m and a high-frequency source (sparker), operating in flip-flop or tuned mode, which generates an acoustic wave that returns information on the variability of conditions in the space of interest.

The high frequencies of the generated wave and the dense spatial sampling make it possible to obtain a high-resolution image of the structures of the subsurface medium.

Our streamer positioning system guarantee sub-centimetre precision and with multi-trace acquisition modules equipped with a 24-bit delta-sigma A/D converter we can record continuously 96 channels with a 10 kHz sample rate.