Inflatable packer with port collar valving

Details Inflatable packer with port collar valving Inflatable packer with port collar valving

E - Fixed Constructions

21

B

E21B 33/127 (2006.01) E21B 33/134 (2006.01) E21B 34/14 (2006.01)

Patent

CA 2205728

An inflatable packer 10 includes a sliding collar 86 which opens and closes port 94 to control pressurization of the inflatable packer element 120 with a cementatious fluid. The collar 86 is axially moveable by a setting tool 20 suspended in the well from a work string WS. An annular passageway 76 in the packer body extends from the inlet port 94 to the packer element 120 to provide for reliable inflation with the cementatious fluid. The collar 86 provides metal-to-metal sealing engagement with the radially inner sleeve 76 of the packer body to reliably seal the inflation chamber from the well fluids when the collar 86 is moved closed.

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