Downhole tractor and coiled tubing tool

The invention provides an underground tractor and a coiled tubing tool, the tractor comprises a stator shell, a stator, a limiting seat, a rotor, an upper valve seat and a lower valve seat, the stator shell is provided with an axially arranged first flow channel, and the stator is fixedly arranged o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG XIAOLIN, LI JIANQIU, LIU JIALIN, GUAN BIN, LIU ZHIYAO, DONG ZHIGANG, SUN ZHAOYAN, FANG WEI, MA XIAOLONG, WEI CHUANYANG, LU XIUDE, SONG DAN, CHEN MINGZHONG, HUANG WEI, DAI QING, LI YUANYUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The invention provides an underground tractor and a coiled tubing tool, the tractor comprises a stator shell, a stator, a limiting seat, a rotor, an upper valve seat and a lower valve seat, the stator shell is provided with an axially arranged first flow channel, and the stator is fixedly arranged on the inner wall of the stator shell; the limiting seat, the rotor, the upper valve seat and the lower valve seat are sequentially arranged in the stator shell from top to bottom, and the limiting seat and the inner wall of the stator shell are fixedly arranged; the rotor comprises a rotating part and an eccentric part, the rotating part is arranged in the stator, and the eccentric part and the rotating part are fixedly arranged; the upper valve seat is fixed with the eccentric part, the upper valve seat is provided with a third flow channel which is axially arranged, and a through hole for communicating the first flow channel with the third flow channel is formed in the eccentric part; the lower valve seat and the