Flanging system for suspending casing and tubing columns for...

E - Fixed Constructions – 21 – B

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E21B 17/14 (2006.01) E21B 33/04 (2006.01)

Patent

CA 1158976

FLANGING SYSTEM FOR SUSPENDING CASING AND TUBING COLUMNS FOR HIGH PRESSURE OIL OR GAS WELLS ABSTRACT A flanging system is described for suspending casing and tubing columns for oil or gas wells, constituted by two flanged superposed spools and a hanger with an axial cylindrical bore and a cone-frustum outer surface, and which is disposed inside the lower spool and forms the outer seal for the casing or tubing suspended on it by means of one or more annular projections which rest on copper or steel gaskets which themselves rest on correspond- ing annular projections provided on the inner part of the lower spool, while the inner seal is formed by a special steel joint ring which has its seat in the top of said hanger and its counter-seat in the bottom of the upper spool.

370180

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