Internal-positioning type float collar

An internal-positioning type float collar relates to the technical field of casing float collars used in the petroleum drilling and production industry and comprises a main body, a rubber sleeve, an upper cone, an upper slip, an upper check ring, a lower check ring, a lower slip, a lower cone, a pre...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHOU ZHANYUN, CHEN DAOYUAN, LIU GAOJUN, LI SHEKUN, YAO PINGJUN, REN WENLIANG
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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