Offshore Riser Handling Trolley System
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Solution Overview
Problem
Existing solutions for moving tubular elements, such as risers, on vessels face safety and efficiency issues due to the use of bridge cranes, which lead to suspended load hazards, inefficient space utilization, and manual operation, particularly in deep-sea drilling operations where precision and automation are critical.
Innovation Solution
A coordinated movement system comprising a pair of trolleys and a lifting device that automates the transfer of tubular elements from storage to the deck, eliminating suspended loads and enabling guided, precise movement through the use of engagement pins and a tilter device, allowing for complete automation and efficient storage utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bridge cranes are used to move tubular elements from storage to deck, then the movement function is achieved, but suspended load hazards and safety risks increase
Solution Approach 1:
The patent extracts and eliminates the bridge crane component from the tubular element handling system. Instead of using suspended crane operations, the invention implements a ground-based tracked vehicle system that transports tubular elements along the deck surface, completely removing the suspended load hazard associated with traditional crane operations.
Solution Approach 2:
The patent replaces the mechanical crane suspension system with a tracked vehicle mechanical transport system. The tracked vehicle uses ground contact and mechanical propulsion to move tubular elements, substituting the suspended load mechanical system with a ground-based mechanical transport system that eliminates safety hazards.
2Productivity
If traditional bridge crane systems are used, then tubular elements can be moved, but space utilization efficiency decreases
Solution Approach 1:
The patent transitions from vertical three-dimensional crane operations to horizontal two-dimensional tracked vehicle operations along the deck. This dimensional change allows tubular elements to be transported along the length of the deck using tracked vehicles, enabling more efficient use of storage space and eliminating the need for large overhead crane structures that consume vertical space.
3Ease of operation
If manual operation of bridge cranes is used, then tubular elements can be handled, but operator exposure to hazards increases
Solution Approach 1:
The patent implements automated control systems for the tracked vehicle that can operate independently or with minimal human intervention. The system includes automated navigation, positioning, and tubular element handling capabilities, reducing the need for operators to be physically present in hazardous areas and eliminating manual crane operation risks.
4Productivity
If tubular elements are moved using conventional methods, then transport is achieved, but the risk of damage to delicate elements increases
Solution Approach 1:
The patent employs specialized support structures and cushioning mechanisms within the tracked vehicle system that provide flexible, damage-free contact with tubular elements. The support system includes padded fixtures and controlled positioning mechanisms that protect delicate surfaces during loading, transport, and unloading operations, preventing damage while maintaining efficient movement.
Data Source
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AI summary
System and method for handling riser pipes (6) on an offshore vessel comprising two reciprocally spaced trolleys (17, 18) provided with engagement means able to engage with respective ends of the riser pipe.