Offshore Lifting Arrangement Rigging System
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Solution Overview
Problem
Existing lifting arrangements for offshore operations, such as tension frames, are complex and heavy, making them difficult to handle and switch between modes like coiled tubing and wireline operations, increasing the risk of accidents and requiring time-consuming preparation onshore.
Innovation Solution
A simplified system for rigging up and handling coiled tubing equipment in a lifting arrangement, featuring vertically extending guiding means, load transferring means, and a load carrying device with displacement capabilities, allowing for efficient movement between inactive and operating positions, and a control system for integrated operation with various intervention frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional lifting arrangements are used for offshore operations, then equipment can be handled and positioned, but the system becomes complex and heavy, making it difficult to handle and switch between modes
Solution Approach 1:
The lifting arrangement is divided into separate functional modules: a carrier for holding equipment, guiding means for vertical movement control, and displacement means for horizontal positioning. This segmentation allows each component to be optimized independently and simplifies the overall system by replacing complex integrated structures with modular assemblies that can be easily configured for different operations.
Solution Approach 2:
The carrier is designed to accommodate multiple types of intervention equipment (coiled tubing equipment, wireline equipment) and can be configured for different operational modes. The guiding means and displacement means serve multiple functions: vertical guidance during lifting, horizontal positioning during installation, and support during operation. This multi-functionality eliminates the need for separate specialized systems for each operation type.
2Productivity
If traditional lifting arrangements are used, then equipment can be positioned, but the system becomes heavy and time-consuming to prepare onshore
Solution Approach 1:
The invention extracts the essential functions of lifting and positioning from complex traditional arrangements, retaining only the critical components (carrier, guiding means, displacement means) while eliminating unnecessary structural elements. This extraction reduces the overall weight of the system and simplifies onshore preparation by reducing the amount of equipment that needs to be assembled and configured before deployment.
Solution Approach 2:
The carrier and guiding means are designed as pre-assembled units that can be prepared onshore in a compact configuration, reducing preparation time. The displacement means can be pre-positioned or pre-configured, allowing for faster deployment at sea without requiring extensive onshore assembly operations.
3Productivity
If complex lifting arrangements are used, then equipment handling is possible, but installation and uninstallation processes become time-consuming
Solution Approach 1:
The guiding means is designed to dynamically adapt to the positioning requirements of different equipment types. The displacement means provides dynamic horizontal adjustment capabilities, allowing the carrier to be quickly repositioned between different locations on the vessel. This dynamic capability enables fast installation and uninstallation of various equipment types without requiring complex reconfiguration of the lifting arrangement.
Solution Approach 2:
The carrier acts as an intermediary between the equipment and the lifting arrangement, providing a standardized interface that simplifies the connection and disconnection processes. The guiding means serves as an intermediary mechanism that facilitates smooth vertical movement and positioning, reducing the complexity of direct manual handling and enabling faster installation and uninstallation operations.
Data Source
AI summary
A method and an apparatus for rigging up intervention equipment (111) in a lifting arrangement (104) utilized on a floating vessel, and moving the intervention equipment between an inoperative and an operative position, wherein the method comprising: a) providing the lifting arrangement (104) with vertically extending guiding means (203) capable of transferring a load to the lifting arrangement; b) connecting a load transferring means (215) to the guiding means (203); c) connecting the intervention equipment (111) to a load carrying device (209) provided with displacement means (214) arranged in a manner allowing a load to be horizontally displaced while carried by the load carrying device; d) connecting the load carrying device (209) to the load transferring means (215); e) moving the intervention equipment from an inactive position to an operating position by moving the displacement means (214); and f) moving the intervention equipment from the operating position to the inactive position by moving the displacement means (214).