Tail pipe plug assembly for drilling liner cementing

The utility model relates to a plug assembly technical field is a tail pipe plug assembly for drilling liner cementing, it includes short circuit head, sliding sleeve, pawl cover and plug dabber, being fixed with the ring platform in the inboard an organic whole in the middle part of short circuit h...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DING ZHAOQI, WANG WENTAO, MAO DESEN, LI YONGLONG, ZHANG XINWEN, FAN QING, ZHAI YAFENG, GUO JIANJUN, GUO XINCHAO, XIN YONG, PAERHATI BAIKE
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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