Hydraulic pressure oil pipe wall scraping device

The utility model discloses a hydraulic pressure oil pipe wall scraping device, including top -down threaded connection's arbor, connecting pipe, jack catch and leather cup dabber in proper order, top -down is provided with the cutting board that the multiunit is the heliciform distribution on...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MA JINLIANG, WANG YING, HU GUIYAN, XIE TONGCHUAN, ZHAO ZENGQUAN, LI JINFENG
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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