Wells – Processes – Distinct – separate injection and producing wells
Reexamination Certificate
2008-09-09
2008-09-09
Bagnell, David J. (Department: 3676)
Wells
Processes
Distinct, separate injection and producing wells
C166S272700, C166S303000, C175S424000
Reexamination Certificate
active
11271231
ABSTRACT:
A method and apparatus for production of material from a subsurface earth formation being intersected by a wellbore that is lined with a well casing. After preparing the well casing by forming injection and production openings or removing a section of the casing to define a borehole interval, a plurality of lateral injection and production passages are formed that extend into the subsurface earth formation from the casing openings or borehole interval. Packers within the well casing define an injection compartment that is in communication with the lateral injection passages and a production compartment that is isolated from the injection compartment. Steam or other injection fluid is injected into the formation via an injection conduit extending from the surface to the injection compartment. Formation fluid migrating through the formation to the production passages is produced via a production conduit extending from the surface to the production compartment. For stabilization of the formation at the lateral injection and production passages a perforate liner is washed into place within each of the lateral passages.
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Bagnell David J.
Fuller Robert E
Jackson James L.
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