Hydraulic releasing device for continuous oil pipes

The utility model discloses a hydraulic releasing device for continuous oil pipes. The hydraulic releasing device comprises an upper connector, an upper releasing connector, a lower connector and a lower releasing connector which are sequentially axially arranged from top to bottom. The upper connec...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZOU GANG, TAN LIANXIANG, WANG YANHAO, YANG XIAOCHENG, NING YI
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 discloses a hydraulic releasing device for continuous oil pipes. The hydraulic releasing device comprises an upper connector, an upper releasing connector, a lower connector and a lower releasing connector which are sequentially axially arranged from top to bottom. The upper connector and the lower connector are respectively connected with the upper releasing connector and the lower releasing connector in a threaded manner. The hydraulic releasing device is characterized by further comprising a ball seat and a lock ring sleeve, the ball seat is arranged in the upper releasing connector, a cavity is formed between the outer wall of the upper releasing connector and the inner wall of the lower releasing connector, the upper end of the lock ring sleeve is arranged in the cavity, the lower end of the lock ring sleeve is arranged in the lower connector, the lock ring sleeve is connected with the inner wall of the lower releasing connector by connecting devices, a protrusion is arranged on the inn