Bentonite tunnelling products , filtration additives, stabilizers and lubricants for tunnel drilling
Micro tunneling is a digging technique used to construct small tunnels, varying from 600 mm up to 4000 mm. Cebo offers proven CEBOGEL® solutions to ensure successful tunneling operations.
As the length of a tunnel increases, the friction of the ground around the pipe increases as well. To minimize this friction, firstly, over-cutting is used to create a slight annular between the inner edge of the tunnel and the outer edge of the liner. A well formulated Bentonite-based lubrication fluid is injected into the annular to decrease the friction and stabilize the formation.
In some occasions, it is necessary to utilize a Bentonite-based stabilization fluid in front of the cutter wheel to stabilize the formation until the lubrication fluid is injected into the created annular.
Bentonite Microtunneling Products
Bentonite tunneling products are used as a primary drilling fluid in tunnelling operations due to their excellent suspension, filtration, and lubrication properties. They also help to cool and clean the drilling bit, reduce friction, and prevent the entry of water or other fluids into the borehole.
Microtunneling Filtration Control Additives
Tunneling Filtration Control Additives help to prevent the loss of drilling fluid into the formation, which can cause borehole instability, reduce drilling performance, and affect the quality of the tunnel walls. The use of effective filtration control additives can minimize the risks associated with fluid loss and help maintain a stable drilling environment, which is critical for safe and efficient tunnelling operations.
Specialist Microtunneling Additives
Microtunneling Clay/Shale Stabilizers
Tunneling Clay/Shale Stabilizers maintain the structural stability of the surrounding ground and prevent collapse during excavation, ensuring worker safety and minimizing project delays and costs. These stabilizers also improve the strength and durability of tunnel walls.
Tunneling Lost Circulation Materials
Microtunneling Lubricants
The use of lubricants in tunnelling operations is crucial for reducing friction and wear on the tunnel boring machine and other equipment, increasing efficiency and speed while minimizing energy consumption. Proper lubrication also promotes the longevity and reliability of equipment, reducing maintenance costs and downtime.
