Torpedo-passing bypass nipple with long-neck rod body

A torpedo-passing bypass nipple with a long-neck rod body comprises a barrel, the upper end and the lower end of the barrel are respectively provided with a thread structure connected with a drill rod, an eccentric inner hole is formed in the barrel, a cable leading-in hole is formed in the side wal...

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Bibliographische Detailangaben
Hauptverfasser: GUO KAI, ZHANG RUIQIANG, WEI CHUNBING, LENG YAYU, LI ZHAOCHUN, JIA QIAN, GONG JIE, WANG XIAOMEI, SHA YUZHUO
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:A torpedo-passing bypass nipple with a long-neck rod body comprises a barrel, the upper end and the lower end of the barrel are respectively provided with a thread structure connected with a drill rod, an eccentric inner hole is formed in the barrel, a cable leading-in hole is formed in the side wall, an included angle b is formed between the cable leading-in hole and the eccentric inner hole, and a reducing area is arranged on the barrel and forms a reducing transition shoulder. According to the bypass pup joint, the long neck rod body with the reducing area is arranged on the barrel body, on one hand, a transition shoulder matched with a well mouth elevator is formed on the barrel body, the well mouth hanging operation state of the bypass pup joint can be achieved, the application flexibility and the use efficiency are improved, on the other hand, a necessary positioning space is reserved for a drilling tool of a cable leading-in hole to retreat, and the drilling tool is convenient to use. The design includ