WELLBORE CIRCULATION SYSTEM, KELLY BUSHING, KELLY AND TONG

A system (10) for continuously circulating fluid to and through a tubular string either of coiled tubing or made up of a plurality of tubulars connected end-to-end while an upper tubular (32) is added to or removed from a top tubular (26) of the plurality of tubulars, all tubulars having a top-to-bo...

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Bibliographische Detailangaben

Hauptverfasser:	PIETRAS, BERND-GEORG, BOX, STEVEN, ANTONY, HABETZ, JEFFREY, MICHAEL, ALLEN, JOHN, TIMOTHY
Format:	Patent
Sprache:	eng ; fre
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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