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 41/00 (2006.01) E21B 7/08 (2006.01) E21B 17/08 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2424395

A wellbore junction isolation method and associated apparatus provide convenient isolation of a wellbore junction while permitting certain operations to be performed in a main or branch wellbore below the junction. In described embodiments, formations intersected by a main or branch wellbore below a wellbore junction may be stimulated by fracturing after installing an assembly at the wellbore junction, in a straddling and sealing relationship therewith, to isolate it from pressures applied during the fracturing operation. The illustrated isolation assembly may be installed in a single trip into the main wellbore.

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