Resonant Network Borehole Sensing via Pulse Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current borehole sensing technologies face challenges in accurately monitoring characteristics such as material composition, temperature, pressure, and flow rate along the length of a borehole, particularly in hostile environments like oil and gas wells, due to limitations in sensitivity and the need for down-hole power sources.
Innovation Solution
The apparatus employs a conductive pipe with a resonant network device and transducer to modulate vibration frequencies induced by pulses, allowing for the measurement of borehole characteristics without requiring down-hole power, using a resonant cavity and ferrite inductance to enhance sensitivity and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional borehole sensing technologies are used, then down-hole power sources and complex electronics are required, but system complexity and sensitivity are worsened
Solution Approach 1:
The patent extracts the power source and complex electronics from the down-hole environment by using a resonant tunneling diode that operates passively. The sensing mechanism relies on quantum tunneling effects that occur without external power, eliminating batteries, power supplies, and complex electronic circuits from the down-hole sensor, thereby reducing system complexity while maintaining sensing reliability
Solution Approach 2:
The resonant tunneling diode structure utilizes the inherent quantum mechanical properties of the semiconductor materials to generate the sensing signal autonomously. The device self-regulates through the resonant tunneling effect, where carriers tunnel through the double-barrier structure at specific energy levels, providing a self-powered sensing mechanism that does not require external power sources
2Reliability
If resonant tunneling diode structures are used, then sensitivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs parameter changes by adjusting the thickness and composition of the barrier layers in the resonant tunneling diode structure. By varying the barrier width and material composition, the resonant tunneling characteristics can be tuned to achieve desired sensitivity levels while accommodating manufacturing tolerances. The energy level alignment and tunneling probability are controlled through these parameter adjustments
Solution Approach 2:
The resonant tunneling diode utilizes composite material structures with alternating layers of different semiconductor materials (e.g., GaAs, AlAs, InGaAs) to create the double-barrier potential. This composite approach allows optimization of each layer's properties independently, achieving the required quantum confinement and resonant states while managing manufacturing precision through material selection rather than purely dimensional control
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
This method enables sensitive and accurate monitoring of borehole characteristics, including temperature and pressure, with minimal environmental impact and no need for down-hole power, improving data accuracy and reducing system complexity.
Implementation Method 1
a resonant network device (such as a resonant cavity) connected with the conductive pipe; and a transducer which is in operative communication with the resonant network device to measure a borehole characteristic, the transducer being configured to affect a modulation of a resonator vibration frequency induced in the resonant network device when a pulse is applied to the inlet
Implementation Method 2
the transducer being configured to affect a modulation of a resonator vibration frequency induced in the resonant network device when a pulse is applied to the inlet
Data Source
AI summary
An apparatus and method are disclosed for sensing a characteristic of a borehole. An exemplary apparatus includes a conductive pipe; an inlet, connected to the conductive pipe, for applying pulse to the conductive pipe; a resonant network device connected with the conductive pipe; and a transducer which is in operative communication with the resonant network device to measure a borehole characteristic, the transducer being configured to sense a modulated vibration frequency induced in the resonant network device when a pulse is applied to the inlet.