Intelligent SIP Measurement Module for Borehole Logging
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Solution Overview
Problem
Existing geophysical logging tools for spectral induced polarization (SIP) measurements are limited by the need for external connections for power, stimulus generation, data acquisition, data processing, and control, and are not optimized for low power operation or real-time closed-loop control, which restricts their functionality and accuracy in borehole and near-surface analysis.
Innovation Solution
An intelligent SIP measurement module integrated into a sonde or surface system that performs SIP, time domain induced polarization, resistivity, and spontaneous potential measurements autonomously, with flexible electrode configurations and focusing techniques, enabling real-time data collection, processing, and storage, and adaptable signal generation and processing algorithms for improved accuracy and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external connections are used for power, stimulus generation, data acquisition, data processing, and control, then the system can perform SIP measurements, but the device complexity increases and reliability decreases
Solution Approach 1:
The patent integrates multiple previously separate external functions (power supply, stimulus generation, data acquisition, data processing, and control) into a single self-contained sonde module. This merging eliminates external connections and interdependencies, thereby improving reliability while managing complexity through functional integration.
Solution Approach 2:
The sonde module is designed to be autonomous, generating its own power, creating its own stimulus signals, acquiring and processing its own data, and controlling its own operations without external assistance. This self-service capability eliminates the need for external connections, improving reliability by removing external failure points.
2Measurement precision
If focusing techniques are used to improve resolution, then measurement precision improves, but power consumption increases
Solution Approach 1:
The patent implements focusing techniques that concentrate measurement efforts locally at the borehole wall rather than distributing power across extended electrode arrays. By focusing current and measurement sensitivity locally at the region of interest, the system achieves high spatial resolution while minimizing overall power consumption.
3Adaptability or versatility
If multiple electrodes are used with various configurations, then measurement versatility improves, but device complexity increases
Solution Approach 1:
The sonde module incorporates multiple electrodes that can be configured for various measurement modes (SIP, resistivity, IP, spontaneous potential) within a single integrated device. The electrodes serve multiple functions depending on the measurement mode, providing versatility without requiring separate dedicated electrode arrays for each technique.
4Productivity
If real-time data processing is performed within the sonde, then productivity improves, but use of energy increases
Solution Approach 1:
The sonde performs data processing operations in real-time as measurements are acquired, rather than requiring post-processing after retrieval. This preliminary action eliminates delays associated with external data transfer and processing, improving productivity by enabling immediate analysis and decision-making.
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 module allows for non-invasive, high-resolution, and efficient measurement of subsurface properties, including hydraulic parameters, with improved penetration and throughput, and fault-tolerant operation, reducing the need for external systems and optimizing power usage.
Implementation Method 1
SIP is based on the fact that when an electric field is applied to the ground, electric current flows through the earth and charge separation takes place at mineral-fluid interfaces
Implementation Method 2
the mineral-fluid interface becomes electrically polarized
Data Source
AI summary
A system for spectral induced polarization measurement of a formation is provided. The system provides an intelligent module to be utilized in performing spectral induced polarization (SIP) measurements for geophysical studies or otherwise. The system includes a instrument that includes a housing configured to be inserted into a surface opening. The housing houses a signal generator that generates an excitation signal. A drive electrode directs the excitation signal into the material adjacent the housing. A plurality of electrodes sense the voltage and/or current in the material adjacent the housing and a processor processes the sensed voltage and/or current to measure a property of the material. The system also provides a configuration in which a plurality of instruments configured for spectral induced polarization measurements are interconnected to provide communication, synchronization, a common reference signal or power.