Wellbore casing section with moveable portion for providing a casing exit

摘要

Disclosed are systems and methods for providing a casing exit. One method includes introducing into a wellbore a casing section having an outer sleeve and an inner sleeve rotatably received within the outer sleeve, the outer sleeve defining an outer window and the inner sleeve defining an inner window rotationally alignable with the outer window, wherein the inner sleeve defines a first alignment portion engageable to rotate the inner sleeve, advancing the casing section to a wellbore location with the inner window rotationally misaligned with the outer window, extending a deflector tool within the casing section such that a second alignment portion provided on the deflector tool engages the first alignment portion, and rotating the deflector tool such that the inner sleeve rotates with respect to the outer sleeve and moves the casing section into an open configuration where the inner window is rotationally aligned with the outer window.

主权项

1. A method, comprising:
introducing into a wellbore a casing section having an outer sleeve and an inner sleeve rotatably received within the outer sleeve, the outer sleeve defining an outer window that opens into the wellbore and the inner sleeve defining an inner window rotationally alignable with the outer window, wherein the inner sleeve defines a first alignment portion engageable to rotate the inner sleeve with respect to the outer sleeve; advancing the casing section to a wellbore location with the casing section in a closed configuration where the inner window is rotationally misaligned with the outer window such that the inner sleeve occludes the outer window; preventing axial displacement between the inner and outer sleeves using one or more bearing assemblies; securing the casing section at the wellbore location; extending a deflector tool within the casing section such that a second alignment portion provided on the deflector tool engages the first alignment portion; and rotating the deflector tool such that the inner sleeve rotates with respect to the outer sleeve and moves the casing section into an open configuration where the inner window is rotationally aligned with the outer window.