摘要
井中声激发极化效应研究是实现声激发极化测井实用化的技术基础 ,实质上是声波在双相孔隙介质中向电磁波的转化 ,其结果就是形成井中声电转换波场 ,最终表现为井中声场辐射能向电磁场能的转化 .通过对双相孔隙介质中声激发极化过程声电转换波场能量的理论分析 ,研究了井中声电转换波场能量的总体构成 ,提出了井中低频声激发极化电场电能体密度的概念 ,并推导出具体表达式 .
Realization of sonically induced polarization (SIP) logging is based on studies of the borehole SIP effect. This effect is essentially transformation of acoustic waves into electromagnetic waves in two phase porous media, resulting in formation of borehole sonic electric transformation wave fields, and eventually behaves as transformation of acoustic radiation energy into electromagnetic energy. In this paper, through theoretical analysis of the energy components of the sonic electric transformation wave fields in two phase porous media, the overall energy composition of borehole sonic electric transformation wave fields is studied. A concept of electrical energy volumetric density of borehole low frequency SIP electrical field is proposed, and its expression is derived. Finally by modeling borehole low frequency SIP electrical fields with real formation parameter models, we have established the relationships between both acoustic frequencies and formation parameters, and electrical energy volumetric density in the borehole low frequency SIP processes. [
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第4期563-572,共10页
Chinese Journal of Geophysics
基金
国家自然科学基金委员会
中国石油天然气集团公司
大庆石油管理局联合资助项目 ( 49374 2 1 5)
关键词
声电转换
辐射能量
声激发极化电场
地球物理测井
地层参数
电能体
声波频率
Sonic-electric transformation, Radiation energy, Sonically induced polarization electric fields, Acoustic waves, Geophysical well logging.
