Seismostratigraphy of Soil Foundations of Offshore Structures at the North Caspian Shelf

Two main components of the soil massif of the North Caspian shelf influencing the safety of offshore oil and gas installations are considered – soft soils and shallow gas accumulations. The identification of sites hazardous for the installations is carried out by using dual-frequency continuous subbottom profiling and high-resolution seismic. Geotechnical methods are used for the verification of geophysical data and for detailed investigations of physical and mechanical properties of soil foundations at the sites of the installations.