Double cutting screw with swivel screw

Double cutting screw with swivel screw designed and delivered to an off-shore drill rig. The screw conveyors removes drill cuttings away from the shaker on the drill rig.

Main elements in the double screw conveyor solution

1. A horizontal double screw conveyor
2. An inclined double lifting screw conveyor with a special developed support frame that carries the lifting screw and the swivel screw
3. A double swivel screw conveyor

The lifting screw conveyor including the swivel screw conveyor are carried in one point. This is the reason for developing the support frame with a girder design. The swivel screw conveyor is turnable and the cuttings can be delivered to different points (containers) during the drill operation.

Key features for the double screw conveyors

• The turnable swivel screw gives the possibility for different delivery points
• All screw conveyors are manufactured with two screw rotors for secure operation
• In case of a break down on one screw rotor the operation can continue with the other screw rotor
• The system is a 2 line system

See another example of a cutting screw conveyor here

Documentation of the double screw conveyors

• The screw conveyors are delivered to an off-shore rig
• The design obeys the specific design requirements in accordance with NORSOK standards
• All surface treatment for painted surfaces are in accordance with NORSOK M-501
• The screw conveyors are delivered with 3.1 material certificates
• Documentation includes user manuals and manuals for all wear parts
• Machine drawings delivered including part list for easy ordering of spare parts

BEMA has its own design department that can handle complex projects that need comprehensive documentation. Our ISO-9001 quality system describes how to handle 3.1 material certificates and all welding processes.

FAQ: Double Cutting Screw with Swivel Screw

1. What is a double cutting screw with swivel screw used for?

This solution is designed for offshore drill rigs to transport drill cuttings away from the shaker. The system combines a horizontal double screw conveyor, an inclined lifting screw, and a turnable swivel screw for flexible material handling.

2. How does the swivel screw improve operational flexibility?

The swivel screw is turnable, allowing operators to direct drill cuttings to different discharge points or containers during drilling operations. This makes the system adaptable to changing workflows on offshore rigs.

3. What are the key advantages of using double screw rotors?

All conveyors in the system use two screw rotors to ensure secure operation. If one rotor fails, the system can continue running on the second rotor, increasing reliability and minimizing downtime.

4. Does the design meet offshore standards and documentation requirements?

Yes. The conveyors are built according to NORSOK design requirements, with surface treatment compliant with NORSOK M‑501. They are delivered with 3.1 material certificates, user manuals, wear‑part manuals, and detailed machine drawings for easy maintenance and spare‑part ordering.