metal casing

Study on systems of forecast the malfunction of borehole casing by metal magnetic memory technique

金属磁记忆预测井下套管故障系统的研究

The cross-well logging technique of measuring electric resistivity of stratum through metal casing has wide foreground, but it is still in the primary stage of investigation and exploiture.

在套管井中实现井间地层电阻率的测量具有很广阔的应用前景，但该技术在国内外仍处于研究和开发阶段。

Cartridge: a cylindrical, usually metal casing containing the primer and charge of ammunition for firearms.

弹药筒: 一种盛装火器的雷管和弹药的圆柱形金属筒.

Signal processing for metal magnetic memory testing of borehole casing based on wavelet transform

基于小波变换的套管金属磁记忆检测信号处理

Research on Metal Magnetic Memory Forecasts the Malfunction of Borehole Casing Based on Wavelet Singularity Detection

金属磁记忆预测套管故障的小波奇异性检测研究

The method can not only research low-frequency current and its character of logging through metal casing but also confirm the method of measuring electric resistivity of stratum through metal casing.

该方法不仅可以用来研究套管井低频电流及其特性，而且还可以用来确定过套管地层电阻率测量方法和套管、水泥环等对测井的影响及其校正方法。

During the logging of measuring electric resistivity of stratum through metal casing, the receiving coil receives the coupled signals of metal casing and cement sheath and stratum.

在过金属套管井地层电阻率测井中，接收线圈收到的是金属套管和水泥环及地层耦合后的总信号，既包括套管产生的信号，也包括水泥环和地层产生的信号。

Early diagnosis for the stress concentration zone of borehole casing pipe by metal magnetic memory and wavelet transform

磁记忆与小波变换相结合的井下套管应力集中早期诊断方法