Fluid injection and production apparatus and method

Details Fluid injection and production apparatus and method Fluid injection and production apparatus and method

E - Fixed Constructions

21

B

E21B 43/12 (2006.01) E21B 34/14 (2006.01) E21B 43/34 (2006.01) E21B 43/38 (2006.01) E21B 43/40 (2006.01)

Patent

CA 2062044

Docket 910012 000 ABSTRACT OF THE DISCLOSURE An apparatus and method for injecting fluid into and producing fluid, including gas, from a subterranean formation via a well in fluid communication with the formation. Fluid is injected into the subterranean formation through a first generally tubular conduit in the well and fluid is produced from formation to the surface through this conduit until fluid flow ceases. Thereafter, fluid is pumped from the formation into the tubular conduit and diverted into the annulus defined between the conduit and the well. The pressure drop created by this diversion causes gas to break out of the produced fluid. The remaining fluid is diverted back into the conduit and pumped to the surface while the gas is produced to the surface via the annulus.

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