在接箍定位器测井图中清晰地记录的一个短节是普遍使用的标志管。
A short pup joint that registers clearly in a collar locator log is a common flag joint.
大多数接箍定位器探测接箍形成的磁异常，并向地面显示和深度对比设备发送一个信号。
Most collar locators detect the magnetic anomaly created by the mass of the steel collar and transmit a signal to surface-display and depth-correlation equipment.
套管接箍定位器是一种电测井下井仪器，它检测由套管接箍的相对较高的质量所引起的磁异常。
The casing collar locator is an electric logging tool that detects the magnetic anomaly caused by the relatively high mass of the casing collar.
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