• 责任者：Wang Jun (Department of Astronautics and Mechanics ; Harbin Institute of Technology ; Harbin 150001 ; China) ; Hu Hengshan
• 刊名：Chinese Journal of Geophysics
• 出版年：2010
• 卷期：53(8)
• 关键词：地层参数 ; formation parameters ; 声波测井 ; acoustical logging ; 电测井 ; electrical logging
• 页码：p.1953-1960
• 图表：6 illus., 2 tables, 25 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

<SPAN class=jwenzhang>An experimental test system is devised to measure the rock permeability on the basis of rock electrokinetic effects. By employing the AC lock-in technique, the streaming potential and electroosmosis pressure experiments are conducted at the low frequency range between 12 Hz and 42 Hz. The streaming potential coefficient K_S and electroosmotic pressure coefficient K_E are obtained. The rock permeability is then calculated from these coefficients and the measured conductivity of the rock based on the electrokinetic theory. For the middle and high permeability samples, there are little differences between the electrokinetic permeability and gas permeability, and there is a good correlation between them. This experimental study not only shows that rock permeability can be measured with the electrokinetic technique, but also reveals the possibility to inverse the formation parameters from electrokinetic well logging signals. The electrokinetic experiments are also useful for the understanding of earthquake-excited electric field.