Claims
- 1. An apparatus for attachment to a casing, comprising:
a body having an engaging surface and a slot; a wedge member mounted within said slot; said wedge member having a first position within said slot with said engaging surface in a contracted position and a second position within said slot with said engaging surface in an expanded position engaging the casing.
- 2. The apparatus of claim 1 wherein said body further includes an orientation surface.
- 3. The apparatus of claim 1 wherein said engagement anchors said body with the casing so as to withstand compression, tension, and torque.
- 4. The apparatus of claim 1 wherein said body and wedge member are the only two parts making up the apparatus.
- 5. The apparatus of claim 1 wherein said slot includes a V-shape with said V-shape and wedge member having complimentary tapered surfaces.
- 6. The apparatus of claim 5 wherein said surfaces are cut on a radius of said body forming inner and outer edges, said inner edges having a chord which is smaller than a chord formed by said outer edges.
- 7. The apparatus of claim 1 wherein said body has a thin wall whereby an inside diameter of said body is at least 70% of an inside diameter of the casing.
- 8. The apparatus of claim 1 wherein said body is generally tubular and has an inner and outer diameter, said outer diameter in said contracted position being less than said inner diameter in said expanded position.
- 9. The apparatus of claim 1 wherein said engaging surface is roughened to frictionally engage the casing in said expanded position.
- 10. The apparatus of claim 1 wherein said engaging surface has teeth adapted to bite into the casing in said expanded position.
- 11. The apparatus of claim 10 wherein said teeth are uniformly disposed around said body.
- 12. The apparatus of claim 1 wherein said slot extends a longitudinal length of said body forming a C-shaped cross sectional body.
- 13. The apparatus of claim 1 wherein said slot does not extend a longitudinal length of said body whereby a mid-portion of said body expands in said expanded position.
- 14. The apparatus of claim 1 further including an actuating member for moving said wedge member from said first position to said second position.
- 15. The apparatus of claim 14 wherein said actuating member engages one end of said body and said wedge member and forces said wedge member into said slot.
- 16. The apparatus of claim 14 wherein said actuating member is releasably attached to said wedge member.
- 17. The apparatus of claim 1 wherein said body has first and second ends and further including a setting tool releasably engaging said ends.
- 18. The apparatus of claim 1 wherein said body includes means for attaching a string of pipe.
- 19. The apparatus of claim 1 further including a sealing element disposed on said body and adapted to sealingly engage the casing in said expanded position.
- 20. An apparatus for fixing a well tool in a cased borehole, comprising:
a tubular body having a longitudinal slot; a wedge member disposed within said slot; said wedge being movable in said slot to expand said body.
- 21 The apparatus of claim 20 wherein said tubular body has friction surface providing a press fit with the casing.
- 22. The apparatus of claim 20 wherein said tubular body further comprises an attachment means for attaching a pipe string.
- 23. The apparatus of claim 20 wherein said body includes first and second portions, a sealing element being disposed on said first portion and a friction surface being disposed on said second portion.
- 24. The apparatus of claim 20 wherein said body includes a seal bore.
- 25. The apparatus of claim 20 further including a latch disposed on said body.
- 26. The apparatus of claim 20 wherein said body includes an orientation surface.
- 27. The apparatus of claim 20 wherein at least one of said tubular body and wedge member has a tapered surface expanding said body.
- 28. An apparatus for attachment to a casing, comprising:
an engaging member having a longitudinal slot and adapted to engage the casing; a friction surface on said engaging member; a sealing member disposed on said engaging member; a wedge member disposed within said slot of said engaging member to expand said engaging member causing said friction surface and sealing member to engage the casing.
- 29. A method of installing an apparatus in a cased borehole, comprising:
lowering the apparatus into the cased borehole; and setting the apparatus within the cased borehole by driving a wedge into a longitudinal slot in the body of the apparatus.
- 30. A method for fixing and sealing a tubular body in a cased wellbore by moving a wedge member through a slot disposed in the tubular body so that the diameter of the tubular body with a seal expands into contact with the inside of the cased wellbore.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims the benefit of 35 U.S.C. 111(b) provisional application Serial No. 60/291,833 filed May 18, 2001, and entitled “Casing Attachment Method and Apparatus”, and further, this application is related to U.S. patent application Ser. No. 09/860,870, filed on May 18, 2001 and entitled “Well Reference Apparatus and Method,” both hereby incorporated herein by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60291833 |
May 2001 |
US |