Oil recovery method and apparatus

Details Oil recovery method and apparatus Oil recovery method and apparatus

1990-06-29

1991-08-20

Dang, Hoang C.

Wells

Processes

Heating, cooling or insulating

166 57, 166 61, 166 62, E21B 3600, E21B 4324

Patent

active

050406051

ABSTRACT:
A method and apparatus are provided for the recovery of a heavy oil, contained in an outcropping formation, without any significant adverse environmental impact. Broadly, the invention comprises indirectly heating an oil containing formation to reduce the viscosity of the oil therein and concurrently thermally insulating an upper portion of the well, extending into the formation, to eliminate any increased seepage of oil from the formation to the surface.

REFERENCES:
patent: 760304 (1904-05-01), Butler
patent: 1012777 (1911-12-01), Wigle
patent: 2388640 (1945-11-01), Moore
patent: 2911047 (1959-11-01), Henderson
patent: 2998069 (1961-08-01), Stephens
patent: 3343605 (1967-09-01), Phelan
patent: 3498381 (1970-03-01), Earlougher, Jr.
patent: 3880236 (1975-04-01), Durning et al.
patent: 3908763 (1975-09-01), Chapman

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