Subterranean Well Setting Tool Piston Rod Groove Design
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Solution Overview
Problem
Existing bridge plug setting tools require high forces for activation and often use explosive materials, leading to complex and costly operations, and the piston rods in these tools are prone to deformation and maintenance issues due to stress concentrations from through holes.
Innovation Solution
A quick connect device and a modified setting tool design featuring a circumferential groove on the piston rod instead of a through hole, along with a resilient member and buttress threads, to securely connect and disconnect the piston rod from the lower piston without deformation, and a quick connect device for easy assembly and disassembly of bridge plugs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional setting tools are used, then the basic setting function is provided, but the tools are difficult to clean and sanitize due to complex internal structures
Solution Approach 1:
The setting tool is divided into a handle and a head that can be separated from each other. The head can be detached from the handle, allowing for easier cleaning and sanitization of the head portion without having to disassemble complex internal mechanisms. This segmentation enables the head to be removed and cleaned separately.
Solution Approach 2:
The head is designed to be extractable from the handle, allowing it to be completely removed for cleaning purposes. This extraction principle enables the head to be taken out and subjected to thorough cleaning and sanitization processes that would be impossible with an integrated design.
2Adaptability or versatility
If conventional setting tools with fixed components are used, then structural simplicity is maintained, but the tools cannot be adjusted for different patient needs
Solution Approach 1:
The setting tool incorporates adjustable components that allow the head to be repositioned along the handle axis. This dynamic adjustment capability enables customization of the tool for different patient anatomies and treatment requirements, while the adjustment mechanism maintains a relatively simple structure through the use of movable butts and positioning features.
3Ease of manufacture
If setting tools are designed with simple structures, then manufacturing is easier, but the tools may be lost or misplaced due to lack of identification features
Solution Approach 1:
The handle of the setting tool is provided with a colored band that serves as an identification feature. This colored band allows for easy visual identification of the tool and can be used to distinguish between different settings or purposes. The addition of the colored band does not significantly complicate the manufacturing process.
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 design reduces the risk of deformation and maintenance costs by eliminating through holes, allowing for faster redress and extended tool life, while the quick connect device simplifies the assembly and disassembly of heavy components like bridge plugs, reducing operational complexity and time.
Implementation Method 1
a resilient member, the resilient member biasing the pin grip insert towards the second end of the pin capture socket
Implementation Method 2
The activation or manipulation of some setting tools involves the activation of an energetic material such as an explosive pyrotechnic or black powder charge to provide the energy needed to deform a bridge plug. The energetic material may use a relatively slow burning chemical reaction to generate high pressure gases.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A setting tool for use in setting bridge plugs comprising a piston rod using an improved fastener design to the lower piston to prevent warping of the piston rod when setting.