Well washing tool and valve element assembly thereof

The utility model relates to a well washing tool and a valve element assembly thereof. The well washing tool comprises a tool body and a valve element assembly, the tool body is provided with an innercavity, an upper end opening and a lower end opening, and the valve element assembly is arranged in...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHEN JIANDANG, DUAN DIANWEI, LI SHIMING, ZHU YUECHAO, QIU LINLIN, ZHANG SHOUQIONG
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 utility model relates to a well washing tool and a valve element assembly thereof. The well washing tool comprises a tool body and a valve element assembly, the tool body is provided with an innercavity, an upper end opening and a lower end opening, and the valve element assembly is arranged in the inner cavity; an overflowing channel is arranged between the peripheral surface of the valve core assembly and the inner wall of the inner cavity; a valve core reset spring is arranged between the top of the valve core assembly and the tool main body; the valve element assembly comprises a sealing element reset spring and a valve element sealing element, and a valve element channel is further formed in the valve element assembly. By the adoption of the technical scheme, the valve element channel and the inner cavity, the upper end opening and the lower end opening form a positive circulation channel, the overflowing channel and the inner cavity, the upper end opening and the lower end opening form a reverse cir