Method of recovering oil from a subterranean viscous...

Details Method of recovering oil from a subterranean viscous... Method of recovering oil from a subterranean viscous...

E - Fixed Constructions

21

B

166/31

E21B 43/16 (2006.01)

Patent

CA 1196269

A METHOD OF RECOVERING OIL FROM A SUBTERRANEAN VISCOUS OIL-CONTAINING FORMATION ABSTRACT OF THE DISCLOSURE In a method for recovering oil from a subterranean, viscous oil-containing formation a gaseous driving fluid, such as carbon dioxide, is injected into the formation and oil is recovered therefrom while vibrations in the seismic frequency range and having an amplitude not exceeding 100 Angstrom units are simultaneously transmitted through the formation to enhance the flow of the carbon dioxide and thereby increase the efficiency of oil recovery. The frequency of the vibrations is within the range of 0.1 to 500 Hz and preferably 1 to 100 Hz.

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