Horizontal well two-stage relay type plunger lifting device and method and movable ball core plunger

The invention provides a horizontal well two-stage relay type plunger lifting device, a horizontal well two-stage relay type plunger lifting method and a movable ball core plunger. The horizontal well two-stage relay type plunger lifting device sequentially comprises a first pressure control type ch...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CUI JIAN, XU JIANLIANG, JIANG SONGLIAN, ZHONG SICUN, CAO YINPING, CAI MOLUN, WANG YONG, WU YIJIA
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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