CA2495364A1 - Well tool anchor and method of releasing gripping elements - Google Patents
Well tool anchor and method of releasing gripping elements Download PDFInfo
- Publication number
- CA2495364A1 CA2495364A1 CA002495364A CA2495364A CA2495364A1 CA 2495364 A1 CA2495364 A1 CA 2495364A1 CA 002495364 A CA002495364 A CA 002495364A CA 2495364 A CA2495364 A CA 2495364A CA 2495364 A1 CA2495364 A1 CA 2495364A1
- Authority
- CA
- Canada
- Prior art keywords
- setting sleeve
- wicker
- mandrel
- shoe
- tubular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
A selectively released well tool anchor has a tubular wicker shoe cage and a tubular setting sleeve in sliding assembly over a tubular mandrel. The wicker shoe cage confines a plurality of independent wicker shoes. The tubular setting sleeve has a conical slip face that is loosely meshed with the shoe cage by a plurality of collet fingers extended from the conical slip face into meshed engagement with detents in the shoe cage. The collet fingers are secured within the detents for well run- in by calibrated shear fasteners. Slip faces on the several wicker shoes are aligned with the conical slip face to effect a radial displacement of the wicker shoes by an axial translation of the setting sleeve relative to the shoe cage. However, no relative axial translation may occur until sufficient axial compressive force between the shoe cage and setting sleeve is imposed to shear the calibrated fasteners. For selective release from the well bore, the setting sleeve has a body lock ring assembled to the internal bore of the setting sleeve. The lock ring has internal buttress threads that mesh with external buttress threads on the mandrel at a selected position along the mandrel length. Displacement of the mandrel to engage the mandrel threads with the lock ring threads draws the conical slip face from the wicker shoe slip face thereby releasing the wickers from a penetrated engagement with the well wall.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/797,215 | 2001-03-01 | ||
US09/797,215 US6536532B2 (en) | 2001-03-01 | 2001-03-01 | Lock ring for pipe slip pick-up ring |
CA002373720A CA2373720C (en) | 2001-03-01 | 2002-02-28 | Well tool anchor and method of releasing gripping elements |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002373720A Division CA2373720C (en) | 2001-03-01 | 2002-02-28 | Well tool anchor and method of releasing gripping elements |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2495364A1 true CA2495364A1 (en) | 2002-09-01 |
CA2495364C CA2495364C (en) | 2006-07-25 |
Family
ID=34394955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002495364A Expired - Lifetime CA2495364C (en) | 2001-03-01 | 2002-02-28 | Well tool anchor and method of releasing gripping elements |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2495364C (en) |
-
2002
- 2002-02-28 CA CA002495364A patent/CA2495364C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2495364C (en) | 2006-07-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20220228 |