Offshore geotechnical investigations

Offshore geotechnical investigations

The company carries out the geological engineering survey and investigations in the Caspian waters under the scope of projects on study and development of oil and gas resources. The received materials provide the safe installation of floating drilling rigs for the duration of well drilling; design, construction of oil and gas field offshore structures and submerged pipelines and consequent monitoring of offshore oilfields and routes. The works are executed in accordance with the national, intergovernmental and international standards, building codes and regulations, corporate standards and Client’s requirements.

At the initial stage during the geological exploration operations those requirements are necessary for provision of safe operation of floating drilling rigs (FDR) used for drilling of exploratory wells. In the period of the development of identified fields those requirements are fulfilled for design and construction of service facilities and submerged pipelines, interfiled structures and facilities designed for transportation of extracted products to the onshore reception centers and offshore loading terminals. During the operational period the monitoring of offshore structures and pipelines status is exercised. Tasks, methods and sequence of its solution determined by regulatory technical documents of different countries and oil and gas companies are identical for various types of exploration. The survey area and scope of work proportion are changed.

Enterprises are equipped by hardware-software complexes and equipment of modern international standard allowing the acquisition of detailed and reliable characteristics of geological engineering conditions on sites of estimated prospecting and exploratory drilling, arrangement of offshore structures and routes as well as the assessment of condition and control of gas pipelines water crossing.






Engineering – hydrographic and engineering –geophisical investigations

(Basic equipment)











Specialized laboratory for soil investigation



Type of analysis carried out in laboratoryStandards applied
Content of dust and clay particles (hydrometer test)GOST 12536-79
Water content of soil (method of drying out to constant mass)GOST 5180-84
Limit of liquidity and limit of plasticity GOST 5180-84
Soil density (cutting ring method) GOST 5180-84
Soil density (water weighing method) GOST 5180-84
Soil particles density (pycnometer method)GOST 5180-84
Maximum density at optimum moisture content (standard compaction method) GOST 22733-2002
Content of organic impurities (dry combustion method) GOST 23740-79
Subsidence characteristicsGOST 23161-78
Soil shear strength, angle of internal friction, specific cohesion (direct shear method)GOST 12248-96
Resistance to nondraining shear (uniaxial compression test) GOST 12248-96
Modulus of deformation (compression test)GOST 12248-96
Triaxial compressionGOST 12248-96
Suffosion compressibilityGOST 12248-96
Swelling and shrinkageGOST 24143-80
Coefficient of permeabilityGOST 25584-90
Heave rateGOST 28622-90
Soil density (cutting ring method)GOST 5180-84
Soil density (water weighing method) GOST 5180-84
Soil particles density (pycnometer method)GOST 5180-84
Maximum density at optimum moisture content (standard compaction method)GOST 22733-2002
Content of organic impuritiesGOST 23740-79
Subsidence characteristicsGOST 23161-78
Soil shear strength, angleGOST 12248-96
Resistance to nondraining shearGOST 12248-96
Modulus of deformation (compression test)GOST 12248-96
Triaxial compressionGOST 12248-96
Suffosion compressibilityGOST 12248-96
Swelling and shrinkageGOST 24143-80
Coefficient of permeabilityGOST 25584-90
Heave rateGOST 28622-90
Maximum molecular moisture capacity RSN 51-84
Slaking RSN 51-84