Offshore seismic exploration

RosGeo subsidiaries possess many years of experience in the field of 2D and 3D offshore seismic surveys, including the operations in deep and shallow waters of the world ocean, as well as in transit zones. The activities are carried out in various climatic and geographical conditions.
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The companies incorporated within the Holding have decades of experience in conducting the seismic exploration on the shelf of the Arctic Ocean and the Arctic seas, they stand at the origin of discovery of the largest deposit fields on the Sakhalin shelf: Odoptu, Chayvo, Lunsk, Venin, Piltun-Astpkh, Arktun-Dagi, Kirin; they have implemented a number of strategic projects in the waters of the Atlantic, Indian, Pacific Oceans.

The company possesses a specialized fleet that comprises 18 research ships and a fleet of small-sized vessels. The research vessels are of a higher ice class, which enables to perform the seismic exploration in the extreme conditions of the Arctic and Antarctic specified complicated ice conditions.

more details on types of activities

We use the most advanced state-of-art technologies, equipment and research facilities:

Based on the needs of the customer the company develops an individual set of surveys with application of the advanced seismic exploration technologies.

Thus, in the interpretation we apply the high density seismic survey technology to improve the spatial and temporal resolution of the seismic data, ensure a more stable operation of the processing algorithms, enhance the quality of the seismic images and degree of details. The seismic exploration technology with application of tillable trailed streamers is used to expand the frequency range of the seismic data recording.

The broadband source technology allows to ensure the suppression of satellite waves on the shotpoints by using the pneumatic sources of different volumes located at different depths and triggered with different time delays.

The application of the seafloor instrumentation allows to perform the work in availability of surface obstacles that complicate the streamer operations, provides a complete and uniform distribution of azimuths and offsets, ensures the high record precision and a perfect contact with the receiving surface, low natural noise and high repeatability in 4D activities. In addition, this enables to achieve a high resolution, and wide bandwidth.

Currently, our companies are implementing  the sets of seafloor instrumentation that allow to perform the 4-component 2D, 3D, and 4D seismic measurements.

The use of two-component seafloor instrumentation provides an opportunity to suppress the satellite waves in the shotpoints, as well as to ensure the suppression of bottom-multiple waves thanks to the procedure for summation of the geophone and hydrophone components (P-Z summation).

Using the four-component seafloor instrumentation allows recording both longitudinal (P) and the exchange (PS) waves, which enables:

  • To produce the images of the structures shielded by gas deposits/gas sands;
  • To produce the images of the structures acoustically transparent for longitudinal waves (P-waves);
  • To produce the images of the structures in the areas burdened by multiple reflections.

2D/3D seismic surveys at the middle depths

RosGeo is actively developing the area of 4C seismic explorations with the seafloor instrumentation that is in high demand at the market of the geologic exploration and survey.

The company gained the experience of such operations on the shelf of the island of. Sakhalin. The works are carried out using the high-tech equipment:

  • Standalone bottom stations Z700 (Fairfield Nodal);
  • Sonardyne acoustic positioning system;
  • Synchronization system of group initiation console Big Shot RTS, Long Shot;
  • Synchronization system Shot Pro II;
  • Pneumatic sources BOLT 1500/1900/2800 LL.

Performance of 2D and 3D CDPM field seismic operations

Performance of 2D and 3D CDPM field seismic operations, swathe acquisition geometry. 3D bin size 25 m x 6.25 m, flip-flop acquisition.

  • Region
    West Indian shelf
  • Type
    Offshore seismic 2D and 3D CDPM operations
  • Year
Project in details

3D seismic survey on the shelf of Morocco

3D acquisition: swathe acquisition geometry, flip-flop acquisition Bean size: 25 m x 6.25 m

  • Region
    Shelf of Morocco
  • Type
    Offshore seismic 3D CDPM operations
  • Year
Project in details


Performance of offshore, transit and terrestrial seismic operations, including gravity and magnetic, seismic acoustic and geochemical surveys.

  • Region
    Waters of the Kingdom of Bahrain
  • Type
    Foreign contract
  • Year
  • Contractor
    Kaliningradgeophysika, Yuzhmorgeologiya
Project in details
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