Foam and particulate material with steam for permeability...

Details Foam and particulate material with steam for permeability... Foam and particulate material with steam for permeability...

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01) C09K 8/50 (2006.01) C09K 8/58 (2006.01) C09K 8/592 (2006.01) C09K 8/60 (2006.01) E21B 21/14 (2006.01) E21B 33/138 (2006.01) E21B 43/16 (2006.01)

Patent

CA 1180266

ABSTRACT OF THE DISCLOSURE FOAM AND PARTICULATE MATERIAL WITH STEAM FOR PERMEABILITY ALTERATION IN SUBSURFACE FORMATIONS A method is disclosed for altering the permeability of a gravity override path through a subsurface earth formation resulting from hot fluid (steam) injection into the subsurface formation. The method includes adding selected sized particulate material to a foam and injecting the foam into the gravity override path to deposit the particulate material thus altering the permeability in the path. The method may including the use of a noncondensible gas in the foam as well as a variety of combinations of the hot fluid injection and foam plus particulate material injection to maximize the sweep efficiency of the hot fluid injection into the subsurface formation.

407916

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