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Streaming Potential Collection and Data Processing Techniques.

Reppert¹, Morgan

¹Earth Resources Laboratory, Department of Earth Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 42 Carleton Street, Cambridge, Massachusetts, 02142

Journal of Colloid and Interface Science

|December 21, 2000

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This study compares streaming potential coupling coefficient collection and processing techniques. All methods yield similar results, but spectral analysis is superior for poor signal-to-noise ratios.

Area of Science:

Geophysics
Electrochemistry
Fluid dynamics

Background:

Streaming potential measurements are crucial for understanding fluid flow in porous media.
No prior research has comprehensively compared different data collection and processing techniques for streaming potential coupling coefficients.

Purpose of the Study:

To present and compare various time-varying and direct current (dc) streaming potential data collection and processing techniques.
To evaluate the performance of different methods under varying signal-to-noise conditions.

Main Methods:

Data collection: dc streaming potentials at various pressures, time-varying streaming potentials at varying pressures and frequencies, and raw time-varying data.
Data processing: dc filtering, root mean square (rms) processing, cross-correlation, spectral analysis, and raw data plotting.

Related Experiment Videos

Comparison of techniques based on resulting coupling coefficients and signal-to-noise ratio.

Main Results:

All processing techniques yielded comparable coupling coefficients within a 3% margin.
Satisfactory performance was observed across all methods when the signal-to-noise ratio was good.
Spectral analysis demonstrated superior performance compared to other methods when dealing with poor signal-to-noise ratios.

Conclusions:

The choice of data collection method may depend on specific application requirements.
Spectral analysis offers a robust approach for streaming potential measurements, especially in noisy environments.
This comparison provides valuable insights for researchers and practitioners in geophysics and related fields.