Methods and apparatus for a downhole tool

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 34/14 (2006.01) E21B 23/06 (2006.01) E21B 33/124 (2006.01)

Patent

CA 2749138

An apparatus and method for operating a packer and a fracture valve is shown. The packer may include a tubular mandrel having a longitudinal bore with an annular packing element and a first piston disposed around the mandrel, wherein the first piston is operable to set the packing element, and a second piston operable to isolate fluid communication between the first piston and the mandrel bore. The fracture valve may include a tubular mandrel having a longitudinal bore and a port, a piston operable to close fluid communication between the bore and the port, and a latch disposed between the piston and the mandrel operable to resist movement of the piston.

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