Enhanced crude oil recovery

Details Enhanced crude oil recovery Enhanced crude oil recovery

E - Fixed Constructions

21

B

166/36

E21B 43/243 (2006.01)

Patent

CA 1268415

ABSTRACT OF THE DISCLOSURE Enhanced oil recovery from a crude oil reservoir is promoted following primary oil production, by subjecting the reservoir to water flooding, discontinuing the water flooding, preferably when the remaining oil is at an OIP level above 0.10 and then subjecting the reservoir to fireflooding with gas having an O2 content at least 50%, preferably above 85%.

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