Method and apparatus for stimulating heavy oil production

Details Method and apparatus for stimulating heavy oil production Method and apparatus for stimulating heavy oil production

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) E21B 43/25 (2006.01) E21B 43/30 (2006.01) E21B 43/40 (2006.01)

Patent

CA 2299790

A method of enhanced oil recovery having a number of steps. One step is to establish a flow path between an injection well and a production well. Then a solvent is heated, under pressure, until the condensation temperature of the solvent vapour is above the naturally occurring formation temperature. Then, the solvent is injected, under pressure, into the formation where it is permitted to condense. Then, the latent heat of condensation, together with warm solvent reduce the viscosity of the insitu hydrocarbon, while precipitating out asphaltenes. The reduced viscosity solvent/heavy oil blend is then recovered.

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