Pressure Responsive Switch for Borehole Device Actuation
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Solution Overview
Problem
Existing pressure responsive switches for actuating devices in boreholes lack efficient mechanisms to utilize pressure differentials effectively, particularly in drilling operations where geophone devices and sampling tools require precise activation states to ensure functionality and protection.
Innovation Solution
A pressure responsive switch comprising a pressure response mechanism with a switch piston and cylinder, and a device actuator that interacts with the mechanism to actuate geophone devices and sampling tools based on pressure differential thresholds, utilizing fluid isolation systems and biasing devices to manage pressure communication and reciprocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure responsive switch is used to actuate devices in boreholes, then device activation reliability is improved, but the complexity of the switch mechanism increases
Solution Approach 1:
The pressure responsive switch is divided into distinct functional segments: a pressure responsive mechanism that detects pressure differentials, and a device actuator that executes the activation. This segmentation allows each component to be optimized independently, improving reliability while managing complexity through modular design.
Solution Approach 2:
The patent introduces a pressure responsive mechanism as an intermediary between the pressure differential environment and the device actuator. This intermediary converts pressure differentials into mechanical motion that reliably actuates the device, ensuring consistent activation without requiring direct complex interaction between pressure sources and device controls.
2Measurement precision
If fluid isolation systems are implemented to manage pressure communication, then pressure control precision is improved, but the device complexity increases
Solution Approach 1:
The patent employs flexible diaphragms as fluid isolation elements that selectively communicate pressure differentials to the pressure responsive mechanism. These thin film barriers provide precise pressure control by allowing only specific pressure signals to pass through while blocking others, achieving accurate pressure differentiation without requiring complex valve or sensor systems.
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 solution enables reliable activation of geophone devices and sampling tools between operative and non-operative states, enhancing seismic signal transmission and sample collection while protecting sensitive equipment from drilling-induced damage.
Implementation Method 1
A pressure responsive switch responsive to a pressure differential acting on the switch
Implementation Method 2
biasing devices to manage pressure communication and reciprocation
Data Source
AI summary
A switch responsive to a pressure differential, including a pressure response mechanism for providing a pressure response in response to the pressure differential and a device actuator arranged to interact with the pressure response mechanism and to utilize the pressure response of the pressure response mechanism to actuate a device. The device actuator actuates the device to an operative state when the pressure differential is below a lower pressure differential threshold, and may actuate the device to a non-operative state when the pressure differential is above an upper pressure differential threshold.