Method and apparatus for creating a cemented lateral junction system
View Patent ↗An apparatus for creating a cemented lateral junction including a sleeve with a premachined opening and a cover disposed at the sleeve. A release material is disposed at the cover. Further disclosed is a method for constructing a wellbore which includes preparing a sleeve with a premachined window and a cover positioned to occlude the window and a release material at at least a portion of the cover exposed to environment through the window for running in the wellbore. The method may further include installing the sleeve in a wellbore and applying a hardenable agent to an annulus of the wellbore around the sleeve.
1. An apparatus for creating a cemented lateral junction system comprising:
a sleeve;
a premachined/opening in said sleeve;
a cover disposed at said opening; and
a release material disposed at said cover and exposed to environment exterior to said sleeve said release material facilitating displacement of said cover in one piece.
2. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said release material isolates at least a portion of said cover exposed to environment exterior to said sleeve.
3. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said release material forms a weak bond with said cover.
4. An apparatus for creating a cemented lateral junction system as claimed in claim 3 wherein said material is silicone.
5. An apparatus for creating a cemented lateral junction system as claimed in claim 3 wherein said material is an elastomer.
6. An apparatus for creating a cemented lateral junction system as claimed in claim 3 wherein said material is an air cured resin.
7. An apparatus for creating a cemented lateral junction system as claimed in claim 3 wherein said material is polyurethane.
8. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said release material further creates a seal between said sleeve and said cover.
9. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said cover and said sleeve further define an intersection therebetween having a hydraulic seal.
10. An apparatus for creating a cemented lateral junction system as claimed in claim 9 wherein said hydraulic seal comprises a seal bore on an inside dimension of said sleeve and a seal on an outside dimension of said cover.
11. An apparatus for creating a cemented lateral junction system as claimed in claim 10 wherein said seal is an o-ring.
12. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said cover is a sleeve.
13. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said cover is a lateral diverter.
14. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said sleeve is a liner sleeve.
15. An apparatus for creating a cemented lateral junction system as claimed in claim 1 wherein said release material is on all of said cover exposed to environment exterior to said sleeve.
16. A method for constructing a wellbore comprising:
installing a lateral diverter in a lateral junction system;
applying a release material to said lateral diverter;
running foregoing elements in a borehole;
deploying said lateral junction system in a lateral exit window; and
applying a hardenable agent to said lateral junction system.
17. A method for constructing a wellbore as claimed in claim 16 wherein said applying is cementing.
18. A method for constructing a wellbore as claimed in claim 17 wherein said cementing includes cleaning out.
19. A method for constructing a wellbore as claimed in claim 16 wherein said method further comprises allowing said cement to set.
20. A method for constructing a wellbore as claimed in claim 16 wherein said method further includes pulling said diverter.
21. A method for constructing a wellbore as claimed in claim 20 wherein said diverter is pulled after setting of the cement.
22. A method for constructing a wellbore as claimed in claim 20 wherein said pulling includes separating said diverter from said cement by defeating bonding properties of said release material.
23. A method for constructing a wellbore comprising:
preparing a sleeve with a premachined window, a cover positioned to occlude said window and a release material isolating at least a portion of said cover exposed to environment through said window said release material facilitating displacement of said cover in one piece, for running in the wellbore;
installing said sleeve in a wellbore; and
applying a hardenable agent to an annulus of said wellbore around said sleeve.
24. A method for constructing a wellbore as claimed in claim 23 wherein said method further comprises removing said cover after applying the hardenable agent.
25. A method for constructing a wellbore as claimed in claim 23 wherein said method further comprises drilling the hardenable agent through said premachined window.
26. A method for constructing a wellbore as claimed in claim 23 wherein said release material covers all of said portion of said cover exposed to environment through said window.
27. A method for constructing a wellbore as claimed in claim 23 wherein the hardenable agent is cement.
28. A method for constructing a wellbore as claimed in claim 23 wherein said installing includes locating and orienting said sleeve.
29. A method for constructing a wellbore as claimed in claim 28 wherein said locating and orienting is accomplished by landing a hook in a hook hanger liner system in a window of said wellbore.