Relative dielectric constant and conductivity measurement of core sample in wide frequency band

摘要

In this paper, two automatic measurement systems were developed for measuring the electrical properties of rocks with different water and oil saturation levels. The systems cover a frequency band from 10 KHz to 1.1 GHz. The operating software of the systems was developed based on Lab VIEW for equipment control, sample measurement and data processing. Easy-to-use software interfaces were also provided. By implementing the automatic measurement systems, the procedure for sample measurement and data processing are simplified and much more efficient. Measurement of rocks, sandstones with different porosities, limestone, asphalt, saline solutions with different salinities, and other samples were performed. Satisfactory measurement accuracy of the automatic measurement systems was achieved comparing the measured data with the previous data. The mortar samples with different moisture contents were measured; and the experimental data, which were not available in existing electrical property tables, were presented.