Apparatus and method

Wells – Above ground apparatus – With seal for reciprocating member

Reexamination Certificate

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Details

C166S084400, C166S088100

Reexamination Certificate

active

07997334

ABSTRACT:
A method and apparatus for containing fluid in ah area of a wellbore annulus, in which fluid is energized to create a fluid flow which is at least partially obstructed and is directed to form in the annulus a localized area of high pressure to contain fluid in an area of the annulus of lower pressure. In an embodiment, the method creates a pressure plug in the annulus.

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