Subsea Deployment Module for ROV Mobilization Efficiency
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Solution Overview
Problem
Current subsea operations require extensive equipment and logistics, leading to inefficient mobilization, high costs, and significant space occupation due to the need for extensive systems and equipment setups for unmanned underwater vehicles and remotely operated tools.
Innovation Solution
A system comprising a deployment module with a load-bearing umbilical cable for lowering and retracting a subsea module, which includes power distribution, communication means, and lifting capabilities, allowing for self-contained operation and control from a distal location, reducing the need for extensive on-site equipment and logistics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If extensive equipment and ancillary systems are installed at the location of operation, then subsea operations can be performed, but mobilization time increases and space occupation increases
Solution Approach 1:
The system is divided into separate functional modules: a deployment module that can be independently mobilized and a subsea module that remains on the seabed. This segmentation allows the deployment module to be quickly transported and deployed without requiring extensive pre-installation of all equipment at the operation location.
Solution Approach 2:
The deployment module acts as an intermediary platform that provides all necessary ancillary systems (power distribution, hydraulic power, instrumentation) between the surface support and the subsea module. This eliminates the need to install these systems directly at the operation location, reducing mobilization time.
2Reliability
If extensive equipment and ancillary systems are installed at the location of operation, then subsea operations can be performed, but space occupation increases
Solution Approach 1:
By segmenting the system into a compact deployment module containing all ancillary systems, the space occupation at the operation location is minimized. Only the essential subsea module needs to be positioned at the seabed, while the deployment module can be suspended from the vessel above.
Solution Approach 2:
The deployment module is designed as a multi-functional platform that integrates power distribution, hydraulic power supply, instrumentation, and vehicle launch/recovery capabilities. This consolidation of multiple functions into a single module reduces the total space required compared to having separate equipment for each function.
3Productivity
If a self-contained deployment module is used, then mobilization efficiency improves and costs reduce, but the system requires precise coordination and control
Solution Approach 1:
The deployment module includes instrumentation and control systems that provide real-time feedback on the status of the subsea module, tether payout, and operational parameters. This feedback enables precise coordination and control, allowing the simplified mobilization process to function reliably despite the dynamic nature of the operations.
Data Source
AI summary
A system for managing and controlling a subsea module is described herein. The system includes a deployment module configured to releasably receive and accommodate the subsea module and a load-bearing cable. One end of the load-bearing cable is connected to the subsea module and the other end is connected to a cable control device on the deployment module. The subsea module may be lowered out of and retracted into the deployment module. The subsea module may be configured to hold a subsea vehicle, such as a remotely operated vehicle or autonomous underwater vehicle. The subsea module may also be a remotely operated tool.