Method and apparatus to selectively reduce wellbore pressure...

Wells – Processes – Graveling or filter forming

Reexamination Certificate

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Details

C166S373000, C166S051000, C166S386000

Reexamination Certificate

active

07128152

ABSTRACT:
A downhole tool has at least one diverter valve. The diverter valves are used to reduce pressure in a wellbore caused by frictional resistance to fluid flow during a gravel pack operation. The increased pressure tends to be created as the beta wave of a gravel pack operation makes its way up the wellbore.

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