电阻率

The thesis is organized as follows:In Chapter 1,a new partial differential equation model for Spontaneous Potential log in heterogeneous formations is introduced.At the same time,the existence and uniqueness of weak solution to the problem are proved,and the problem of resistance identification in SP log is studied.Furthermore,a jump condition capturing finite difference scheme is proposed and applied to solve such elliptic interface problems.The effects of various factors on SP response,which include objective layers resistivity,bed thickness,bore-hole diameter,invasion and water-flooded zones and so on,are investigated quantitatively by the proposed method, and satisfactory results are obtained.

具体安排如下：第一章首先建立复杂地层中自然电位测井的偏微分方程数学模型，证明了该边值问题弱解的存在唯一性，在此基础上研究了自然电位测井电阻率识别问题：然后发展了用于求解椭圆交界面问题的间断捕捉有限差分方法，利用该方法定量分析了目的层电阻率、地层厚度、井径、侵入带和水淹层等因素对自然电位测井响应的影响，取得了满意的结果。

It is found that the resistivity increases linearly with temperature rising in certain range of temperature above the melting point. During subsequent calefaction, the results obviously show that a turn point appears in the resistivity-temperature curve for every composition at certain temperature.

发现在液相线以上一定的温度范围内，其电阻率随温度的升高而线性增加，即其电阻率温度系数α基本保持不变；当温度超过某一临界温度时，α随温度的升高出现异常变化。

Introduced are specialities,structures and parameters of some newly developed well logging tools used by eminent well logging companies in the past few years,such as the new 3-D electrode-type logging tool,the new asymmetrical array induction logging tool,the new micro-resistivity pad tool,the oil-based mud imaging tool,the novel through-casing resistivity tool,the formation tester with an oval pad,the ArmadaTM sampling system and the ConneX perforating system.

介绍了国外测井公司近年来推出的电缆测井新技术以及新型或改进型测井仪器的特点、结构组成及工作参数。主要包括：新型3D电极电阻率测井仪器、新型阵列感应测井仪器、新型微电阻率极板仪器、油基泥浆成像仪器、低污染流体采样技术、新一代油管传送流体采样系统、具有椭圆形极板的地层压力测试仪器和ConneX射孔系统。

The simulation results demonstrate the rightness and efficiency of FEM. Based on the studies above, the detective characteristics of FMI are examined, a few device structural parameters are numerical analyzed and optimized. The response of each type of formation model is simulated, and gray-scale images are used to express the resistivity results. Adopting 8 electrodes manner to measuring inclined bed, a full-bore resistivity image is obtained, and the relations between the image and the inclined bed are pointed.

在上述工作基础上，考察了全井眼地层微成象仪的探测特性；对有可能影响测量结果的仪器结构参数进行了分析和优化；模拟各种地层模型的测井响应，并用灰度图象表示电阻率井壁成象结果；采用8极板同时测量的方式，对倾斜地层进行模拟测量，得到了全井眼电阻率成象结果，并指出了成象特征与地层倾斜方向之间的关系。

The origin of this giant Hall Effect is contributed to 3d local electron- electron interaction.

样品的电阻率温度曲线研究表明异常霍尔电阻率可能来源于3d局域电子－电子的散射作用。

HALS has eve n more serious borehole effect and shall ower depth of investigation,poorer azim uthal resolution than ARI.

与ARI相比，HALS的井眼影响更大，探测深度较浅，方位电阻率的探测能力更差，不是方位电阻率测量的好方法。

In this paper, full-space late-time and all-time apparent resistivity formula was derived based on homogeneous full-space response equation of central loop. By comparing with half-space formula and analyzing measured data, the application efficiency of this formula was studied.

从全空间中心回线源响应公式出发，推导了全空间晚期和全区视电阻率公式；通过与半空间公式比较和对实测资料的分析，研究了全空间视电阻率公式的应用效果。

The numerical calculation and influencing factors of casing well resistivity logging are studied.The response equation of resistivity logging is established based on the electromagnetic field theory and the distribution characteristics of the electric field in the intermediate zone.

根据电磁场理论和中场区电场分布特点，建立套管井地层电阻率测井测井响应方程，用传输线理论分析了套管井测井数值计算的可行性，分析了水泥环、地层电阻率、套管厚度等因素对测井响应的影响。

During the inversion of the dual lateral log, The generalized inversion method is used to invert the three parameter (the radius of the invasion zone, the resistivity of the invasion zone, the resistivity of the destination formation) and eliminate the affect of invasion zone.

对于双侧向测井反演，本文将广义逆反演方法用于消除侵入影响的三参数(侵入半径、侵入带电阻率、原状地层电阻率)反演中。

The absolutely dry concrete,actually, is the good nonconductor, whose resistivity can be as high as 108 kΩ.cm, whereas the humid concrete is thought to be semiconductor and its resistivity is around 10 kΩ.cm.

绝对干具体，实际上，是良好的绝缘体，其电阻率可高达108kΩ。cm高，而潮湿的混凝土，被认为是半导体，其电阻率约为10kΩ。cm。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。