A method and apparatus for separating downhole oil and water...

Details A method and apparatus for separating downhole oil and water... A method and apparatus for separating downhole oil and water...

E - Fixed Constructions

21

B

E21B 43/38 (2006.01) E21B 43/40 (2006.01)

Patent

CA 2665035

A method and apparatus for the downhole separation and reinjection of the water component of an oil/water mixture or an oil/water/gas mixture produced from a hydrocarbon well. The fluid mixture from the production zone is delivered to the wellbore at the production zone through perforations in the casing and tubing string and delivered through check valves into the annulus formed between the casing and the tubing string. The hydrocarbons are then produced to surface under formation or pump pressure and water is discharged into a selected disposal horizon. The annulus between the casing and the tubing string comprises the separation means over its effective length to surface, the water separating by gravity in the separator and discharging into the water reinjection horizon and the hydrocarbons being delivered to surface.

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