Centralizer

The embodiment of the utility model relates to the technical field of mechanical oil extraction, and discloses a centralizer and a submersible screw pump unit, the centralizer comprises a first half hoop, a second half hoop and a fastener; the first half hoop comprises a first limiting bulge; the se...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YIN XUECHAO, LI XIN, YE LICHAO, LI HUAJING, JIN LICHUAN, ZHAI PENG
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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