Method of flowing viscous hydrocarbons in a single well...

Details Method of flowing viscous hydrocarbons in a single well... Method of flowing viscous hydrocarbons in a single well...

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01) E21B 43/14 (2006.01)

Patent

CA 2031813

ABSTRACT OF THE DISCLOSURE A method of heating produced fluid in a wellbore having multiple tubing strings. In the portion of the wellbore above the dual-string packer a portion of hot injection fluid is selectively flowed from the injection tubing string into the casing annulus where the production tubing is heated, and the flowing viscosity of fluids therein is lowered.

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