Concentric steaming string downhole apparatus

Details Concentric steaming string downhole apparatus Concentric steaming string downhole apparatus

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01) E21B 36/00 (2006.01) E21B 43/14 (2006.01) E21B 43/16 (2006.01)

Patent

CA 1179937

ABSTRACT OF THE DISCLOSURE "CONCENTRIC STEAMING STRING DOWNHOLE APPARATUS" A downhole concentric tubing string is disclosed for use in distributing steam, or other hot fluids, to separated subsurface formations along a well bore. The apparatus includes elements for deflecting the steam from one string into the annulus of a cased well for injection through openings into the formation, elements for conducting the steam in another of the concentric string to a second set of openings for injection into another portion of the formation, and elements of isolating and separating the two separate injection intervals.

407527

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