Soil Excavation & Dredging

To solve wide range of tasks on subsea soil excavation TRIDENT applies highly efficient tools produced by Dragflow SRL, Italia. The system may include the following elements and various combinations thereof depending on each specific task:

  • Hydraulic submersible pumps of various capacity
  • Hydraulically driven mechanical excavators
  • Rigid steel frame/body
  • High-pressure water jet-rings
  • Hydraulic power units
  • Hydraulic hoses
  • Slurry discharge lines
  • Other auxiliary equipment.


These systems can be utilized to complete various operations including the following:

  • Excavation of subsea pits, ditches and trenches for further installation of foundations for offshore structures (oil and gas platforms, wind farms) and burial of pipelines and cable lines
  • Opening of trenches with earlier laid pipeline or cable lines for repair and maintenance
  • Cleaning of interior of offshore large diameter piles
  • Dredging /cleaning operations in ports especially in hard to access areas or places where high-accurate work is required
  • Dredging operations in yacht marines required to be implemented without moving the vessels from the place of their regular berthing
  • Cleaning operations connected with maintenance and operations of dikes
  • Backfilling of shoreline with sea soil as a means to combat shore erosion
  • Cleaning of industrial ponds/settlers containing residues of heavy and high-abrasive particles (iron and steel, coal mining, paper and other industries)
  • Cleaning of mines, tunnels, cuttings settlers/holders from slurry with high specific gravity and large inclusions of high-abrasive solid phase.
Company Profile HSE Policy
IPM of Well Drilling Reservoir Management Conductor Driving Offshore Surveys Pile Driving Grouting Services Well Testing Services Subsea Operations Soil Excavation & Dredging Support Consultancy
Conductor Driving Project for well No.2 Skuratovskaya offshore in the Kara Sea for GAZPROM NEDRA Survey and Navigational Support Project Pile Grouting Project in the Caspian Sea Integrated Drilling Project in the Sea of Azov for Priazovneft LLC Integrated Project Management of Offshore Well Drilling Integrated Well Testing Project for Cadogan Petroleum PLC Participation in Well Stimulation Project Support Services for GMC Limited Equipment Rental Contract IPM Project for Transeuroenergy Project Management of Well Drilling and Testing on an Offshore Field IPM of Drilling and Testing of TAT101 Well on Tatyanovskoe Field