On-Demand Hydrostatic Hydraulic Trigger System
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Solution Overview
Problem
Current hydrostatic and hydraulic systems used to release components in wellbores are complex, require heavy equipment for assembly, and can overpower components during release, while also being dependent on piston and bore sizes which limits fluid transport capacity.
Innovation Solution
An on-demand hydrostatic/hydraulic trigger system with a piston cylinder and constraining elements, such as burst discs and frangible elements, that selectively releases a constrained member by shifting under controlled fluid pressure, allowing for easy assembly and installation without overpowering the component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If hydrostatic and hydraulic systems use larger piston/bore sizes to reduce activation force, then the force needed to activate the system is reduced, but the available area for transporting fluids is reduced
Solution Approach 1:
The trigger system is nested within the tubular structure, with the piston and bore integrated into the existing tubular wall thickness. This allows the hydraulic system to be contained within the tubular without requiring additional external space, thereby maintaining full fluid transport area while achieving the necessary activation force through the nested piston-bore configuration
2Ease of manufacture
If hydrostatic and hydraulic systems are designed to be readily installable and easy to assemble, then installation time and complexity are reduced, but the systems may lack the robustness needed for subterranean applications
Solution Approach 1:
The trigger system is divided into modular segments including the piston assembly, burst disc, frangible element, and sealing components that can be assembled separately and then integrated into the tubular. This segmentation allows for easy assembly and disassembly while maintaining robustness through standardized connection interfaces designed for subterranean application reliability
Solution Approach 2:
The system is pre-configured with the piston, burst disc, and frangible elements in their initial positions during manufacturing, allowing for rapid field installation. The burst disc and frangible elements are pre-installed in their breakable states, and the piston is pre-positioned within the bore, eliminating the need for complex field assembly while ensuring the system maintains its robustness through factory-quality installations
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
Enables efficient and controlled release of components in wellbores with reduced complexity and equipment needs, maintaining the integrity of the wellbore for fluid transport while allowing for easy installation and operation.
Implementation Method 1
directing fluid pressure onto a constraining element arranged in a cylinder formed in the subterranean component
Data Source
AI summary
A downhole component including a member having an outer surface, a constrained element configured to move relative to the member between a first position and a second position, and an on-demand hydrostatic/hydraulic trigger system including a constraining element operable to selectively release the constrained element. The on-demand hydrostatic/hydraulic trigger system includes a piston cylinder.