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Estimation of Reservoir Porosity and Water Saturation through Phase Dispersion Rate of Complex Resistivity Logging
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
Summary
Compared with traditional electrical prospecting methods of single-frequency, complex resistivity technology utilizes multi-frequency analysis and could provide more insights about the reservoir. It is of great significance to further study the relationship between electrical property and reservoir parameters, and establishes a new technique for reservoir evaluation in the interest of increasing oil and gas production for single well or the whole reservoir. Experimental observation and research on complex resistivity are conducted by using shaly sandstone core samples with various physical properties and pore fluid characters in the laboratory. The experimental result demonstrates that the phase dispersion rate calculated from the extreme point of phase dispersion curve is presented relative correlations with porosity and water saturation of the rock. These empirical relations are expected to break through the limitations of traditional electrical logging methods for shaly sandstone reservoir evaluation and to establish a new method based on complex resistivity technology.
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