Casing pipe lifting pipe column and rotary unsealing mechanism and method

The invention discloses a casing pipe lifting tubular column and a rotary unblocking mechanism and method. The casing pipe lifting tubular column comprises a packer connected to a fixed-length oil pipe, a tubular oil well pump and a liquid inlet screen pipe, the tubular oil well pump is located abov...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DU WEIXUAN, GU GUANGMING, ZHI QINGONG, ZHOU NA, QIAN QIN, ZHU ZEJUN, ZHANG FANGYUAN, WANG FENG, XIAO PING
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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