Fluid injection and production apparatus and method

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

1991-05-24

1992-07-28

Bui, Thuy M.

Wells

Processes

Separating material entering well

E21B 4300

Patent

active

051334070

ABSTRACT:
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.

REFERENCES:
patent: 1674815 (1928-06-01), Barnhart
patent: 1820291 (1931-08-01), Strandell
patent: 1886886 (1932-11-01), Kelley et al.
patent: 4112745 (1978-09-01), McCabe et al.

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