Marine Surveys

Through designing new equipment and application of proven survey techniques we can successfully collect geo-data in the most testing field conditions in a safe and efficient manner.

Marine Geo Service operates two research vessels, a drilling rig for geotechnical studies and possesses specialized equipment for conducting engineering and geological surveys at depths to 3000 meters. We can address challenging tasks due to our dynamic development, diversified practices and substantial technological potential.

The company successfully works in partnerships with many Russian and international companies operating in the market of marine surveys and if necessary, we can involve competent external experts in comprehensive projects.

Geotechnical drilling

To drill geotechnical and pilot wells to a depth of 800 m we use a mobile stand-alone drilling rig ARB20-18, that can also test soils (sampling diameter to 107 mm) and perform downhole CPT.

Soil sampling

To carry out geotechnical and geochemical studies of the sedimentary cover to a depth of 20 m, we use in-house GeoMarine gravity-piston and vibro-corers with a proven efficiency at a depth of 2500 m. For specialized samples at greater depths, an ROV is used.

Cone-penetration testing

Reliable real-time data about the soils properties in situ can be obtained by static probing undertaken by deep-water seabed testing instruments.

Downhole CPT carried out by the drilling rig ARB20-18 makes it possible to study the properties of soils at great depths.

Lab tests

To obtain the most accurate data about the soils in their natural occurrence, we can perform on-site tests of the physical parameters of the samples in the shipboard laboratory. Further detailed tests are carried out in specialized onshore laboratories.

2D/3D HR and UHR seismic surveys

We perform both standard profile-based observations in all frequency ranges and 3D high-resolution surveys based on innovative techniques. The use of 3D techniques makes it possible to obtain a seismic image of the geological setting with a resolution of 0.5 m.

Side-scan sonar surveys

Acoustic image of the seabed surface is obtained by dual-frequency sonars, towed behind a research vessel. At deep water surveys, we use ROV and AUV mounted side & sector scanning sonars.

Magnetic survey

For the search and detection of industrial targets and UXOs on the seabed and in the upper part of the sedimentary cover we use towed magnetometers based on the Overhauser effect and multichannel fluxgate magnetometers for detailed ROV surveys.

Bathymetric surveys

The company has experience in conducting multi-beam echosounding both in shallow water from a support vessel and at depths to 2500 m using ROVs and AUVs. Application of up-to-date high-precision equipment combined with quality control at each stage of the surveys ensures that reliable data are obtained.

The quality of the obtained data is an important issue, therefore all surveys are accompanied by on-site QC.

If necessary, simultaneously with data collection we can perform a shipboard data processing and interpretation. Extensive post-cruise analysis and summation can be undertaken as well.

Geotechnical drilling

Nowadays, offshore engineering surveys are practically impossible without geotechnical drilling. However, depth and type of studies substantially vary depending on the project targets. Sometimes the project budget does not permit to use specialized drilling vessels that are quite expensive. At the same time economically feasible onshore drilling rigs, installed on pontoons can not be used as well as they are not powerful enough to ensure high quality of studies. Our solution for that - a mobile drilling rig!

The concept of a mobile marine drilling rig ARB 20-18 built by the Singapore company "Armada Rig Builders" meets the most diverse and strict operational requirements, simultaneously satisfying initially incompatible survey parameters.

It is mighty enough not only to drill to a depth of 700 m and take samples by sophisticated sampling devices but to perform a full set of well tests including CPT along the entire borehole.

When ARB 20-18 is installed on a specialized RV it can become a multipurpose and mobile survey tool remaining at the same time economically efficient due to a relatively low cost of drilling.

Installation of the drilling rig on a non-self-propelled barge provides a feasible production at depth of 2 m at minimum draft.

ARB 20-18 installed on ice-class ships and icebreakers can work in the remote Arctic zones, inaccessible to the majority of specialized drilling vessels.

The drilling rig operation is environmentally safe. It is based on a closed cycle of drilling mud use. All units and components of ARB 20-18 have TUV, DNV certificates. The John Deer engines are compliant with Euro 5 standard.

ROV and AUV based subsea surveys

We carry out the whole range of ROV and AUV operations at depths to 3000 meters:

- Visual inspection and identification of targets

- Drilling support

- Pipeline inspection

- Monitoring of wellhead state

- UXO surveys and support of munition clearance

R & D

As a leading edge company Marine Geo Service cannot function without a profound technological support for its R&D process. Improvement of existing designs and developing new solutions is carried out by our in-house R&D Center - a modern technological base for devising specialized and customized equipment and for efficient servicing and maintenance. The Center plays a key role in the company commercialization infrastructure and helps to ensure that Marine Geo Service maintains its technical evolution.

Our R&D center holds almost 10 years of experience in innovative design. The Center possesses a workshop that is fully equipped with sophisticated machine and processing tooling and metalworking instrumentation & manned by experienced engineers fully conversant with the latest technological developments. The convenient location on the Black Sea coast gives easy access for efficient testing of the manufactured equipment all year round.

New or improved models of ROVs design, associated instrumentation, CPTs and geotechnical equipment development plus comprehensive applications software are some of many areas in which Marine Geo Service is actively investing its resources.

We keep a sharp focus on the latest trends. This focused commitment together with a close working relationship with Marine Geo Service customers and involvement in challenging projects has resulted in construction of a wide range of innovative and even unique equipment.