井中震电勘探模型实验研究

Seismoelectric measuremnts in a borehole model

1. 中国石化勘探开发研究院,北京100083;2. 石油大学,北京100083

1. SINOPEC Research Institute of Petroleum Exploration and Development, Beijing 100083, China;2. University of Petroleum, Beijing 100083, China

井中震电勘探是应用震电效应勘探油气的最为有效的方法之一。应用井孔层状介质模型, 成功地进行了震电观测实验。实验表明, 井中震电结果确实能反映井周围地层的性质, 在含流体孔隙介质段信号强, 在纯固体介质段信号弱。

Borehole seismoelectric measurement is likely to become an effective means in oil exploration and production. Borehole seismoelectric models were studied experimentally, and electromagnetic fields induced by seismic waves (ultrasonic) were observed successfully.Our experiments showed that the seismoelectric fields can yield information about the formation around the borehole,the amplitude of the seismoelectric signals was high in porous zones, and low in solid zones.Theoretical analysis proved that the borehole seismoelectric measurement can be used to detect and characterize the permeable zones intersecting a borehole.