Trial Study of Vibration-Induced Effects on Spontaneous Potential |
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作者姓名: | SunWeibin QiuWeiting HeZhanxiang |
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作者单位: | [1]ChinaUniversityofGeosciences,Beijing [2]BureauofGeophysicalProspecting,CNPC |
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摘 要: | Vibratory excitation generates not only reflections and refractions of wave fields on the subsurface interfaces but also electromagnetic waves with different frequencies. In this paper we address the vibration-induced effects on the spontaneous potential field. The effects of controllable vibration on the spontaneous potential field were studied under real field geologic conditions. Experimental data confirmed that the vibration-induced effects on the spontaneous potential field do exist under field conditions. Monitoring records over a long time interval showed that there existed three information zones in the vibration-induced effects on spontaneous potential field:These are the signal-variant zone, the extreme-stable zone and the relaxation-recovery zone. Combined with different well-site data, it was concluded that the time-variant features of the anomalies in the information zones was closely related to the properties of the subsurface liquid (oil and water).
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关 键 词: | 电磁波 振动波 频率 地质环境 交互作用 |
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