Oil pipe outer wall wellhead oil scraping and cleaning device

The invention relates to a device, and particularly relates to an oil pipe outer wall wellhead oil scraping and cleaning device. According to the technical scheme, the oil pipe outer wall wellhead oilscraping and cleaning device comprises a shell, a pressing cap, a pressing ring, an oil pipe self-se...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TONG QIJIN, LIU YUHANG, SUN JUN, DONG XIAOBIN, DONG QING, WANG NINGHUI, LI QINGWEI, SUN XINJIE, WANG SHIWEI, XU QINGZHU, ZOU YUN, JI KAI, DING YIMING, SHENG ZONGGANG, LIU WEI, LI HONGBO, ZHU YANPENG, YUE YONGJUN, ZHU SHIWEI, LI YEXUN, DENG CHUNGUANG, LIU JIHAI, HUANG LILI, WANG WEI, QIU ZHANWU, ZHANG JIXIAO, ZHANG BAOLU, LIU JINKU, YANG HAOPING
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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