Controlling transient pressure conditions in a wellbore

Wells – Processes – Perforating – weakening – bending or separating pipe at an...

Reexamination Certificate

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C166S311000, C175S004540

Reexamination Certificate

active

10710564

ABSTRACT:
A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool string is activated to create a transient overbalance pressure condition in the wellbore interval, or vice versa.

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