岩样电阻率成像系统

A ROCK SAMPLE RESISTIVITY IMAGE SYSTEM

提出一种研究岩石电阻率的成像系统．首先介绍陈列电极的数据采集特点和电阻率图像的生成，然后给出用该系统实际测量砂岩样品的电阻率图像．该系统可以在实验室中对岩石样品电阻率的非均匀分布进行测定，并用图像表示；可以模拟地层的动态条件，测量电阻率的变化，同时给出在相驱方向的压力分布情况．

A rock sample resistivity image system is introduced in this paper, which canmeasure the edsotropy of the rock sample's resistivity and represent it by image.Moreover mis system can simulate the dynamic condition of the formation andinvestigate the variation of the rock's resistivity and the distribution of pressure.Characteristic of data acqinsition with electrede array and the generation of rocksample's resistivity image are elaborated in detail. And the result of some practicalmeasurements is shown. This system will be applied in the research of the mecheismof drilling fluid invasion in the borehole. Theorehcal and practical references forresistvity image logging will be reached in mis approach.