Opportunistic Wellbore Communication Using Existing Noise Signals
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Solution Overview
Problem
Current communication systems in well structures face challenges in improving transmission reliability and minimizing power consumption, particularly in oil and gas well infrastructure, where downhole power is often provided by batteries with variable lifespan.
Innovation Solution
The method involves identifying and modifying existing noise signals, such as those generated by electric power sources, to encode information for opportunistic communication between locations in a well structure, using signal detectors and controllers to alter signal path impedance and harmonics, allowing for efficient data transmission and power utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional communication systems are used in well structures, then data transmission can be achieved, but power consumption increases and transmission reliability decreases
Solution Approach 1:
The patent converts harmful electromagnetic noise signals, which were previously considered interference to be eliminated, into useful communication signals. By detecting and modulating these existing noise signals generated by power sources, the system creates communication capability without requiring additional power-consuming transmitters, thereby improving reliability while reducing power consumption.
Solution Approach 2:
The patent enables the existing power supply infrastructure to serve dual purposes: providing electrical power to downhole devices and simultaneously serving as a communication medium. The power lines and associated electromagnetic fields become multi-functional, carrying both energy and information, which eliminates the need for separate communication power sources.
2Reliability
If additional power sources are installed for communication, then communication capability is improved, but system complexity and cost increase
Solution Approach 1:
The patent enables the existing power supply infrastructure to serve dual purposes: providing electrical power to downhole devices and simultaneously serving as a communication medium. The power lines and associated electromagnetic fields become multi-functional, carrying both energy and information, which eliminates the need for separate communication power sources.
Solution Approach 2:
The system uses the existing power infrastructure to provide communication services without requiring additional dedicated communication equipment. The power lines and electromagnetic fields serve themselves dual purposes, reducing system complexity by eliminating redundant components.
3Use of energy by moving object
If existing noise signals are utilized for communication, then power consumption is reduced, but signal modification complexity increases
Solution Approach 1:
The patent replaces complex mechanical signal generation systems with electronic detection and modulation of existing electromagnetic noise signals. Instead of generating new signals through power-consuming transmitters, the system electronically detects and modulates pre-existing electromagnetic fields, reducing power consumption while managing signal processing complexity through electronic means.
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 approach enhances communication reliability and reduces power consumption by leveraging existing signals, enabling efficient data transmission and power provision to downhole devices while minimizing the need for additional power sources.
Implementation Method 1
identifying at a first location an existing signal propagating in a section of the well structure
Implementation Method 2
modifying that existing signal so as to encode information at the first location... changing the characteristics of a signal path for the existing signal... changing the impedance of the signal path
Implementation Method 3
communication of that information to the second location... receiving a modified signal at the second location
Data Source
AI summary
A method and system of opportunistic communication in a well structure are provided. The method includes identifying at a first location an existing signal propagating in a section of the well structure between the first location and a second location; modifying that existing signal so as to encode information at the first location for opportunistic communication of that information to the second location; and receiving the modified signal at the second location and decoding the signal so as to retrieve the information.