Modular Riser Storage Deck Space Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current riser section storage and handling systems on offshore drilling vessels are inefficient, occupying valuable deck space and requiring lengthy loading and unloading processes, especially when transitioning between shallow and deep sea operations, leading to suboptimal use of vessel resources.
Innovation Solution
A modular riser section storage and handling system comprising multiple transport containers and an overhead track, allowing for flexible configuration and efficient use of deck space by adjusting the number of containers and track sections based on operational needs, enabling simultaneous storage and handling of multiple riser sections with a versatile and adaptable system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If fixed rack bins are used for riser storage, then structural integrity is provided, but deck space flexibility is reduced
Solution Approach 1:
The storage system is divided into modular rack bins that can be independently positioned and configured. Each rack bin is a discrete unit that can be arranged in different patterns on the deck, allowing the system to be reconfigured for different storage capacities and access patterns while maintaining structural integrity through standardized connection interfaces.
Solution Approach 2:
The rack bins are designed to be movable rather than permanently fixed, allowing them to be repositioned on the deck using the overhead crane system. This dynamic configuration enables the storage system to adapt to different operational requirements, such as changing from high-capacity storage to low-capacity storage with improved access, while the overhead track provides structural support during transitions.
2Strength
If overhead track is supported on vertical beams fixed to deck, then structural support is provided, but deck space is occupied
Solution Approach 1:
The overhead track system serves multiple functions: it provides structural support for the overhead crane, defines the storage area boundaries, and can be configured in different patterns depending on deck space availability. The track itself becomes a multi-functional element that both supports the crane mechanism and organizes the storage layout, reducing the need for separate support structures.
3Quantity of substance
If multiple rack bins are used for riser storage, then storage capacity is increased, but loading and unloading time is increased
Solution Approach 1:
Riser sections are pre-positioned in rack bins that are optimally located near the derrick or handling station. The modular rack system allows risers to be staged in advance in convenient locations, so when drilling operations require riser sections, they are already in position for quick retrieval. This preliminary positioning reduces the time needed for loading and unloading operations.
Solution Approach 2:
The overhead crane with movable hook serves as an intermediary mechanism that efficiently transfers riser sections between multiple rack bins and the derrick area. The crane's ability to move along the overhead track allows it to access any rack bin quickly, reducing the time penalty associated with having multiple storage locations by providing direct access to all bins without manual handling.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention provides a modular riser section storage and handling system adapted for storing and handling riser sections for use in wellbore drilling activities. The system comprises multiple riser section transport containers, a riser section handling station, an overhead crane and an overhead track. The multiple riser section transport containers, and preferably the riser section handling station are configured to support the overhead track,when set up in a storage configuration, to enable the overhead crane to travel above and along the multiple transport containers and to move riser sections between the multiple transport containers and the riser section handling station.