Studies on the Influencing Mechanisms of Pore Structures on Resistivities
详细信息
- 责任者：He Suwen (Well Logging Company ; Henan Oil Exploration Bureau ; Nanyang 473132 ; China) ; Li Airun
- 刊名：Petroleum Geology & Oilfield Development in Daqing
- 出版年：2012
- 卷期：31(1)
- 关键词：孔隙结构 ; pore structure ; 电阻率 ; resistivity
- 页码：p.172-174
- 图表：4 illus., 10 refs.
- 分类号：1003
- issnNo：ISSN1000-3754
- isbnNo：CN23-1286/TQ
摘要
The influences of the pore structures on the electric properties are mainly transited by the index of the pore structures （m）. The analyses of mercury injecting method show that the value m is impacted by the pore structures of the rocks, when the radium of the medium value decreased, the corresponding value m is also reduced; the more the interstitial matter is, the easier the better electricify-conducting network with well-developed micro-fine capillaries can be formed in pores and throats, thus the reduced overall resistivity of the reservoir rocks will be caused. When the porosity is as same as the water saturation, the reservoir resistivities will be dropped with the decrease of the value m.