Method and apparatus for wellbore fluid treatment

Wells – Packers or plugs – Spaced sealing portions

Reexamination Certificate

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C166S308100, C166S177500, C166S318000, C166S334400, C166S147000

Reexamination Certificate

active

07861774

ABSTRACT:
A tubing string assembly is disclosed for fluid treatment of a wellbore. The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off. The tubing string can also be used where a ported tubing string is required to be run in in a pressure tight condition and later is needed to be in an open-port condition.

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238th Di

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