Method of preheating a heavy oil zone through existing...

Details Method of preheating a heavy oil zone through existing... Method of preheating a heavy oil zone through existing...

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01)

Patent

CA 2039920

F-5726; METHOD OF PREHEATING A HEAVY OIL ZONE THROUGH EXISTING BOTTOM WATER AND THEM DIVERTING STEAM INTO THE OIL ZONE ABSTRACT A method for recovering viscous oil from a formation having a bottom water zone below an oil containing zone. Steam is directed into the bottom water zone thereby heating this zone and an oil containing zone thereabove. Afterwards, steam injection is ceased and a gellable composition is directed into the bottom water zone where it forms a solid gel. Once the solid gel has formed, steam is injected into the bottom water zone where the solid gel causes it to flow upwardly into the oil containing zone. Oil, water, and steam are removed via a recompleted producer well.

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