E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/39
E21B 43/24 (2006.01) E21B 23/06 (2006.01) E21B 33/03 (2006.01) E21B 33/04 (2006.01) E21B 33/128 (2006.01) E21B 36/00 (2006.01) E21B 33/00 (2006.01)
Patent
CA 1190140
A SEALING SYSTEM FOR A WELL BORE IN WHICH A HOT FLUID IS CIRCULATED Abstract of the Disclosure The sealing system comprises a tubing string which is capable of undergoing deformation under the action of a hot fluid, at least one casing string in which the tubing is housed, a connecting and sealing assembly placed between the casing and the tubing as well as members for supporting and securing the casing and tubing strings. The sealing system essentially comprises in addition a hollow seal support, the upper end of which is rigidly fixed and the lower end of which is free so as to permit displacement of the upper portion of the tubing string with respect to the seal support whilst the lower portion of the tubing string is rigidly fixed to the connecting and sealing assembly located near the bottom of he well bore. -1-
396607
Miffre Hubert
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Societe Nationale Elf Aquitaine
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