Jack-Up Offshore CO2 Injection for Rapid Carbon Sequestration
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Solution Overview
Problem
Current carbon capture and sequestration systems face challenges such as high lead times, limited space on floating drilling rigs, and complex installation processes, making them inadequate for efficient CO2 storage in offshore wells.
Innovation Solution
A mobile offshore carbon capture and sequestration unit (MOCCASU) utilizing a jack-up structure with a floatable hull and legs, integrated CO2 removal and compression systems, and flexible transfer conduits, allowing for rapid deployment and operation next to existing well heads, independent of carbon capture technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If floating drilling rigs are used for carbon capture and sequestration, then CO2 storage capability is achieved, but installation time is excessive (6-12 months) and space is limited
Solution Approach 1:
The system is divided into separate functional modules: the jack-up structure with CO2 injection capability, the CO2 supply vessel, and the transfer conduit system. This segmentation allows each component to be prepared independently and deployed separately, reducing overall installation time from 6-12 months to a much shorter period.
Solution Approach 2:
A flexible transfer conduit acts as an intermediary between the CO2 supply vessel and the jack-up structure, enabling connection without permanent installation. This intermediary component allows rapid connection and disconnection, eliminating the need for complex permanent installation infrastructure.
2Productivity
If floating drilling rigs are used for carbon capture and sequestration, then CO2 storage capability is achieved, but equipment space is limited and location is difficult
Solution Approach 1:
Equipment is segmented into modular units distributed across different vessels and structures. The jack-up structure houses injection equipment, while the CO2 supply vessel contains storage and compression equipment, eliminating space constraints on a single platform.
Solution Approach 2:
The system transitions from two-dimensional deck space constraints on floating rigs to three-dimensional offshore space utilization. Equipment is distributed across multiple vessels and water depths, allowing adequate space for all components without competing for limited deck area.
3Productivity
If floating drilling rigs are used for carbon capture and sequestration, then CO2 storage capability is achieved, but installation complexity is high requiring extensive certification
Solution Approach 1:
The system employs dynamic, movable connections rather than fixed installations. The jack-up structure can be positioned and repositioned, and the flexible conduit allows movement, simplifying installation and reducing the need for complex permanent certification processes.
Solution Approach 2:
The system is designed to be self-configuring and self-positioning to a extent. The jack-up structure can independently position itself, and the flexible conduit automatically adjusts to relative movements, reducing the need for complex external installation and certification processes.
4Ease of operation
If conventional jack-up structure is used, then mobile deployment is enabled, but adaptation to different carbon capture technologies is required
Solution Approach 1:
The jack-up structure is designed with universal interfaces and standardized connection points that can accommodate different carbon capture technologies. The system accepts CO2 from various sources (direct air capture, industrial emissions, etc.) through standardized transfer conduits, making it technology-independent.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The MOCCASU system enables efficient CO2 capture and storage with reduced installation time and minimal interfacing, leveraging existing infrastructure and equipment, and supports both manned and automated operations.
Implementation Method 1
a jack-up structure comprising a floatable hull and three or more legs configured to be raised and lowered vertically and engaged with or landed on a seafloor
Implementation Method 2
one or more CO2 removal units (including air moving fans and CO2 adsorption and/or absorption units) configured to remove CO2 from atmospheric air through Direct Air Capture (DAC)
Implementation Method 3
one or more CO2 compressors configured to transfer the captured CO2 through the one or more transfer conduits to the second installation
Implementation Method 4
one or more transfer conduits fluidly connecting the one or more CO2 compressors with a second installation
Implementation Method 5
one or more CO2 injection wells configured to route the captured CO2 into a subsurface storage formation
Data Source
AI summary
Systems and methods for mobile offshore carbon capture and sequestration operations. One system includes a first installation featuring a direct air carbon dioxide capture (DAC) system, carbon dioxide dehydration, carbon dioxide compression and a second installation featuring carbon dioxide injection facilities to inject carbon dioxide into an underground reservoir or other suitable subsurface formation.