Wells – Processes – Graveling or filter forming
Reexamination Certificate
2006-04-25
2006-04-25
Gay, Jennifer H. (Department: 3672)
Wells
Processes
Graveling or filter forming
C166S051000, C166S329000, C166S386000
Reexamination Certificate
active
07032666
ABSTRACT:
A gravel packing method and apparatus so that when setting the packer, a ball is dropped to a seat that is isolated from the effects of formation pressures when trying to set the packer. This is accomplished by isolation of the gravel pack outlet port when setting the packer and locating the ball seat in a position where the effects of formation pressure are irrelevant. Additionally, by positioning the evacuation ports above a seal bore in the screen extension during circulation to deposit gravel and further putting check valves in the evacuation ports, the evacuation step after circulation can be accomplished without having to reposition the crossover.
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OSCA, “Multi-Position Set-Down Service Tool,” Technical Bulletin, 1 page, 2000.
Baker Hughes Incorporated
Gay Jennifer H.
Rosenblatt Steve
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