Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2011-01-25
2011-01-25
Wright, Giovanna C (Department: 3672)
Wells
Processes
Placing fluid into the formation
C166S297000, C166S334400, C166S386000, C166S387000
Reexamination Certificate
active
07874365
ABSTRACT:
Methods and devices are provided for treating multiple interval well bores. More particularly, an isolation assembly may be used to allow for zonal isolation to allow treatment of selected productive or previously producing intervals in multiple interval well bores. One example of a method for treating a multiple interval well bore includes the steps of: introducing an isolation assembly to a well bore, the isolation assembly comprising a liner, one or more sleeves and a plurality of swellable packers, wherein the sleeves and swellable packers are disposed about the liner; deploying a shifting tool inside the liner, where the sleeves are configured so as to provide open, closed and open to screen positions when actuated by the shifting tool. An open position allows for treatment of the well bore while an open to screen position allows for receiving fluid from the well bore. A closed position re-establishes zonal isolation.
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International Search Report for International Application No. PCT/GB2007/001025, dated Jun. 15, 2007.
Altman Richard
Clayton Robert
Courville Perry Wayne
East, Jr. Loyd E.
Halliburton Energy Service,s Inc.
McDermott & Will & Emery
Wright Giovanna C
Wustenberg John W.
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