岩石复电阻率测量技术及标定方法研究

研究储层岩石的复电阻率特性,首先必须排除岩石物理测量系统极化效应的影响。基于不同金属电极材料测量装置和硫酸铜面团装置,完成清水条件下的复电阻率实验,并应用纯电阻和RC并联电路对测量仪器和测量装置系统进行标定,证实硫酸铜面团测量装置的性能最稳定,确保了实验结果的准确性和可靠性。在此基础上,建立了一套完整的岩石复电阻率测量技术和标定方法,优选出性能最稳定的测量装置系统,排除非岩石极化效应的影响,为常规与非常规油气储层岩石物理分析和评价提供技术保障。

Study on Measurement Technology and Calibration Method of Rock Complex Resistivity

Making study on complex resistivity characteristics of reservoir rock must exclude the polarization effect of rock physical measurement systems firstly. Based on measuring device of different metal electrode materials and copper sulfate dough, the complex resistivity experiments with water are completed. In the measuring process, pure resistance and RC parallel circuit are used to calibrate the instrument and measuring apparatus system, which confirms that the performance of copper sulfate dough measuring device is more stable and ensure the accuracy and reliability of the experimental results. On this basis, a complete set of rock complex resistivity measuring and calibrating method are established, optimizing the most stable measuring system and excluding non-rock polarization effect. This study will provide technical support for petrophysical analysis and evaluation of conventional and unconventional oil or gas reservoir.