1
Glenn W Anderson, Stanley O Hutchison: Concentric steaming string downhole apparatus. Chevron Research Company, G W Wasson, Edward J Keeling, August 23, 1983: US04399865 (14 worldwide citation)

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 ...


2
Anderson Glenn W, Hutchison Stanley O: Train de tiges concentriques pour linjection de vapeur a fond de forage, Concentric steaming string downhole apparatus. Chevron Research And Technology Company, SMART & BIGGAR, December 27, 1984: CA1179937

ABSTRACT OF THE DISCLOSURE "CONCENTRIC STEAMING STRING DOWNHOLE APPARATUS" A downhole concentric tubing string is disclosed for use indistributing steam, or other hot fluids, to separated subsurfaceformations along a well bore. The apparatus includes elementsfor deflecting the steam from one string ...