Apparatus and methods for isolating a wellbore junction

Details Apparatus and methods for isolating a wellbore junction Apparatus and methods for isolating a wellbore junction

E - Fixed Constructions

21

B

E21B 17/08 (2006.01) E21B 41/00 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2354900

A wellbore junction isolation method and associated apparatus provide convenient isolation of a wellbore junction while permitting certain operations to be performed in a wellbore below the junction. In a described embodiment, a formation intersected by a main wellbore below a wellbore junction is stimulated by fracturing after installing an assembly at the wellbore junction to isolate it from pressures applied during the fracturing operation. In this embodiment, the assembly is installed in a single trip into the main wellbore.

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