Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2008-06-10
2010-10-26
Bagnell, David J (Department: 3676)
Wells
Processes
Placing fluid into the formation
C166S305100
Reexamination Certificate
active
07819193
ABSTRACT:
Downhole fracturing tools comprise upper and lower isolation devices and a housing disposed in between. The housing comprises a housing bore that is divided into two chambers isolated from each other within the housing bore. The upper bore is in fluid communication with a fluid injection line through which a fracturing fluid is pumped into the upper bore. The fracturing fluid flows down the upper bore, substantially parallel to a longitudinal length of the tool, and exits the tool through at least one port. The fracturing fluid then travels down the wellbore annulus. Returns from the fracturing fluid flow through a screen in the tool and up a return line that empties into the wellbore annulus above the upper isolation device.
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Savoy Mark J.
Speyrer Edward E.
Bagnell David J
Baker Hughes Incorporated
Greenberg & Traurig, LLP
Matheny Anthony F.
Wallace Kipp C
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