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1. 发明授权

US4855912A Method and apparatus for measurement of the thermal behavior of porous media 失效
标题翻译：用于测量多孔介质的热行为的方法和装置
公开(公告)号：US4855912A
公开(公告)日：1989-08-08
申请号：US153130
申请日：1988-02-08
申请人： Jayanth R. Banavar , David L. Johnson , Sidney R. Nagel , Kambiz A. Safinya
发明人： Jayanth R. Banavar , David L. Johnson , Sidney R. Nagel , Kambiz A. Safinya
IPC分类号： G01V3/24 , G01V9/00
CPC分类号： G01V9/005 , G01V3/24
摘要： A method and apparatus for investigating earth formations surrounding a borehole operates by selectively heating a region of the formations, and measuring the thermal response to obtain useful information concerning the characteristic length scales of the pores in the heated region. The thermal response is obtained indirectly by measuring the electrical conductivity response. The invention can be utilized to obtain, inter alia, indications of porosity, permeability, and the distribution of pore geometries. In accordance with an embodiment of the method of the invention, the following steps are performed: heating a region of the formations with a series of pulses of microwave electromagnetic energy; measuring the conductivity characteristic of the region which result from the heating pulses; and determining a property of the region of the formations from the measured conductivity characteristic. In the preferred embodiment of the invention, the conductivity characteristic is converted to conductivity as a function of frequency, and the desired property is determined from the conductivity as a function of frequency. The disclosed technique can also be used for studying the microgeometry of media such as core samples.
摘要翻译：用于研究钻孔周围的地层的方法和装置通过选择性地加热地层的区域并测量热响应来获得关于加热区域中的孔的特征长度尺度的有用信息。通过测量电导率反应间接获得热响应。本发明可用于特别获得孔隙度，渗透性和孔几何形状分布的指示。根据本发明的方法的一个实施例，执行以下步骤：用微波电磁能的一系列脉冲加热地层的区域; 测量由加热脉冲产生的区域的导电特性; 以及根据测量的电导率特性确定地层的区域的性质。在本发明的优选实施例中，电导率特性被转换为作为频率的函数的电导率，并且根据作为频率的函数的电导率确定期望的性质。所公开的技术也可以用于研究诸如核心样品的介质的微观几何学。

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