Combined multilateral window and deflector and junction system
Provided, in one aspect, is a windowed deflector assembly. The windowed deflector assembly according to this aspect includes a tubular housing, the tubular housing having a window there through, a wrap covering the window, and a deflector coupled to or formed integrally as part of the tubular housing.
1. A windowed deflector assembly, comprising:
a tubular housing, the tubular housing having a window there through and an uphole profile located in an interior surface thereof;
a wrap covering the window; and
a deflector coupled to or formed integrally as part of the tubular housing, the deflector having;
a cavity that extends through an axial length thereof;
a downhole angled surface;
a downhole latch profile located in an interior surface of the deflector downhole of the downhole angled surface; and
a protection mechanism positioned between the downhole angled surface and the downhole latch profile for opening and closing the cavity, wherein at least a portion of the protection mechanism is radially aligned with the window.
2. The windowed deflector assembly of claim 1 , wherein the wrap comprises a non-ferromagnetic material.
3. The windowed deflector assembly of claim 1 , wherein the wrap comprises aluminum or an alloy thereof.
4. The windowed deflector assembly of claim 1 , wherein the wrap comprises reinforced plastic, fiberglass, a composite, or carbon fiber.
5. The windowed deflector assembly of claim 1 , wherein the wrap has a yield strength of 30 ksi or less.
6. The windowed deflector assembly of claim 1 , wherein the wrap has a yield strength of 10 ksi or less.
7. The windowed deflector assembly of claim 1 , wherein the wrap has a yield strength ranging from 5 ksi to 18 ksi.
8. The windowed deflector assembly of claim 1 , wherein the tubular housing comprises steel having a first yield strength, and the wrap comprises a material having a second lesser yield strength.
9. The windowed deflector assembly of claim 1 , wherein the wrap is a tubular wrap that extends entirely around the tubular housing to cover the window.
10. The windowed deflector assembly of claim 1 , wherein the wrap covers the window but does not extend entirely around the tubular housing.
11. The windowed deflector assembly of claim 1 , wherein the window is located in a wall of the tubular housing opposite the downhole angled surface.
12. The windowed deflector assembly of claim 1 , further including one or more seals located along an inner surface of the deflector.
13. The windowed deflector assembly of claim 1 , wherein the deflector is rotationally fixed relative to the tubular housing and the window.
14. The windowed deflector assembly of claim 1 , wherein the protection member is configured to align with the downhole angled surface when closing the cavity.
15. A well system, comprising:
a main wellbore extending through one or more subterranean formations;
a lateral wellbore extending from the main wellbore;
a windowed deflector assembly located at a junction between the main wellbore and the lateral wellbore, the windowed deflector assembly including:
a tubular housing, the tubular housing having a window there through;
a wrap covering at least a portion of the window, wherein the tubular housing comprises a first material having a first yield strength, and the wrap comprises a second material having a second lesser yield strength; and
a deflector coupled to or formed integrally as part of the tubular housing, the deflector having;
a cavity that extends through an axial length thereof;
a downhole angled surface; and
a protection mechanism positioned between the downhole angled surface and the downhole latch profile for opening and closing the cavity, wherein at least a portion of the protection mechanism is radially aligned with the window.
16. A method for forming a well system, comprising:
forming a main wellbore through one or more subterranean formations;
positioning a windowed deflector assembly at a desired lateral junction location in the main wellbore, the windowed deflector assembly including:
a tubular housing, the tubular housing having a window there through;
a wrap covering at least a portion of the window, wherein the tubular housing comprises steel having a first yield strength, and the wrap comprises a material having a second lesser yield strength; and
a deflector coupled to or formed integrally as part of the tubular housing; and
forming a lateral wellbore off of the main wellbore, including drilling through the wrap covering at least a portion of the window and into the subterranean formation.