Method of assisting surface lift of heated subsurface viscous pe

Details Method of assisting surface lift of heated subsurface viscous pe Method of assisting surface lift of heated subsurface viscous pe

1982-08-31

1984-11-06

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166 50, 166250, E21B 4324

Patent

active

044806957

ABSTRACT:
A method and apparatus is described for producing viscous petroleum from a subsurface formation. The apparatus includes a generally horizontal cased well through the subsurface formation with injection and production tubings within the well. The casing is perforated and the inner tubings carry a movable packer and a rotatable agitator. The method comprises injecting a heating and drive fluid for moving heated viscous petroleum through the perforations in the casing and into the well for production to the wellhead. Production is monitored for the ratio of produced packer fluid and viscous petroleum. Based on that ratio, the packer is moved within the casing to positions along the horizontal well to maximize production of petroleum. The rotatable agitator assists in removal from the well bore of formation solids produced with the viscous petroleum.

REFERENCES:
patent: 2991987 (1961-07-01), Heinze
patent: 4109715 (1978-08-01), Adamson
patent: 4116275 (1978-09-01), Butler et al.
patent: 4362213 (1982-12-01), Taber

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