DURRIS DRILLING ENGINEERING SERVICES LIMITED are experts in deepwater riser engineering which allows them to help in a number of deep-sea mining riser development projects around the world.

Seabed mining is receiving increasing global interest as a cost-effective means to recover polymetallic minerals

DURRIS DRILLING ENGINEERING SERVICES LIMITED are engaged in several deep-sea mining riser developments. These projects aim to extract eSMS (extinct seabed massive sulphide), SMnN (seabed manganese nodules) and other minerals from a wide range of water depths, in quite unknown environmental conditions using different riser configurations. The riser that has to follow a seabed mining crawler presents design challenges not only in terms of water depth, but also a free-hanging, un-tensioned state of the riser which exhibits higher motion response compared to risers that are fixed to the seabed. DURRIS DRILLING ENGINEERING SERVICES LIMITED has the extensive relevant experience of this type of system gained from installation engineering of deepwater risers.