Multi-term type well mouth sealing device

A multi-term type well mouth sealing device comprises a pressing cap, a gland, a one-level sealer, a centralizer, a two-level sealer, a random deviation corrector, a fixed deviation corrector and a seal ring. The pressing cap is in threaded connection with the upper portion of the one-level sealer,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WANG WEN'GANG, SU FENGYING, CHEN XIAOGANG, QIN TIEJUN, SUN BAIDONG, XUE MENG, CHENG YOUMIN, GONG XIANGZHENG, LI CHUNTAO, YU PEISHENG, XUE BIQUAN, LI ZHONGLIN, SU DONGJING, CHEN ZHAOYING
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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Beschreibung
Zusammenfassung:	A multi-term type well mouth sealing device comprises a pressing cap, a gland, a one-level sealer, a centralizer, a two-level sealer, a random deviation corrector, a fixed deviation corrector and a seal ring. The pressing cap is in threaded connection with the upper portion of the one-level sealer, the lower portion of the one-level sealer is connected with the upper portion of the two-level sealer in a threaded or welded mode. The lower portion of the two-level sealer is in threaded connection with a ball arm on the upper portion of the random deviation corrector, a deviation correcting ball of the random deviation corrector is in movable sealing fit with a ball base arc, a ball base is in horizontal and movable sealing fit with a deviation correcting base of the fixed deviation corrector, the deviation correcting base is horizontally arranged on an adjusting plate of the fixed deviation corrector in a sitting mode, and the adjusting plate is in threaded connection with a shell, covering the deviation correc