密闭取心工具主要由外螺纹接头、平衡活塞、限位接头、内外筒、卡箍岩心爪、定位销、密封头、及取心钻头等部件组成。
Sealing coring tools mainly consists of external threaded adapter, balance piston, limit joint, inner and outer barrel, core catcher, locating pin, sealing head and coring bit.
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.
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.
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