查询词典 resistivity

Keywords well logging instrument;cased hole formation resistivity logging;apparent resistivity;error analysis;second order potential difference

测井仪器；过套管电阻率测井；视电阻率；误差分析；二阶电位差

The equation of the large rectangular loop source cloud expresses induced electromotive force at any field points accurately, the apparent resistivity derived from that is not subject to edge effects; the observation is still made with central loop pattern and in near zone, and the simple and direct relationship between induced electromotive force and apparent resistivity could be maintained.

大定源回线公式可以准确地表示任意场点的感应电动势，由此导出视电阻率无边缘效应影响；观测按照中心回线方式并保持在近区进行，可使感应电动势和视电阻率之间的转换简单而直接。

A new method is developed for correcting the static shift.A key point of the method is to apply the resistivity parameters of rocks to calibrate the apparent resistivity curves of high frequency.

提出了一种比较有效的静态校正方法，其核心内容是利用地表出露地层和岩性电阻率标定视电阻率曲线的首支进而确定静态偏移量，并利用该偏移量去改正视电阻率曲线。

Based on modeling test in water tank, this paper employed three different iron blocks to model water-bearing bodies and enclosed plastic pipes or rounded wood strips to model roadways. It gave physical modeling of water-bearing bodies in the working face floor with parallel Bipole-Dipole method, made analysis on the character of electrical field and the law of apparent resistivity changing when the low resistivity abnormity bodies were placed flatly close to water level under semi-space condition and were placed flatly, vertically or aslope to the water level under whole-space condition.

本文以三种不同规格的铁块模拟含水体，以密闭的塑料管或木块条模拟巷道，通过水槽模拟实验，采用平行双极—偶极法进行了对工作面底板含水体的物理模拟，分析了低阻异常体铁块在半空间条件下近水面水平放置以及全空间条件下水平、垂直和倾斜放置时的电场特征和视电阻率变化规律。

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 resistivity of concrete using fly ash with high content of iron oxide has lower resistivity.

在具体使用的氧化铁含量高的粉煤灰电阻具有较低的电阻率。

Interconversion between linear source resistivity and point source resistivity with the use of matrix method.;2. In the total discharge of point source wastewater,about 76% of nitrogen an.

对厦门市近岸海域近10年的废水和主要污染物质排放量估算的结果表明：万元产值工业废水排放量呈逐年下降的趋势，而各污染物的排放总量却逐年缓慢增长；在点源污水排放总量预测中，约76%的氮、磷来自于生活污水；在非点源污染负荷中，农业非点源中的氮、磷负荷占较大比例，城市非点源污染负荷比例最小。

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。

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。