IT1077998B - Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve - Google Patents
Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeveInfo
- Publication number
- IT1077998B IT1077998B IT4836977A IT4836977A IT1077998B IT 1077998 B IT1077998 B IT 1077998B IT 4836977 A IT4836977 A IT 4836977A IT 4836977 A IT4836977 A IT 4836977A IT 1077998 B IT1077998 B IT 1077998B
- Authority
- IT
- Italy
- Prior art keywords
- sleeve
- drill string
- stabilizer
- well drill
- readily removable
- Prior art date
Links
Abstract
A well drill string stabilizer is claimed including an externally-tapered tubular body for incorporation in the drill string and a wear-resisting sleeve with a complemental tapered bore shrink-fitted onto the body. There is provision for pressurizing the region between the tapered surfaces of the body and the sleeve to facilitate installation of the sleeve on and its removal from the body. Seal rings are provided to confine the pressurizing fluid between the body and the sleeve. At its end surrounding the smaller dia. portion of the body the sleeve has a radially-inwardly extending projection presenting a terminal planar bearing surface or relatively large area normal to the sleeve axis. A drill collar or bit secured to the smaller dia. portion of the body abuts the bearing surface and urges the sleeve against a shoulder presented by the larger dia. portion of the body. No undue radial deformation of the sleeve or the body can occur such as might inhibit removal of a sleeve and/or fitting of a replacement sleeve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT4836977A IT1077998B (en) | 1977-03-08 | 1977-03-08 | Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT4836977A IT1077998B (en) | 1977-03-08 | 1977-03-08 | Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1077998B true IT1077998B (en) | 1985-05-08 |
Family
ID=11266143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT4836977A IT1077998B (en) | 1977-03-08 | 1977-03-08 | Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1077998B (en) |
-
1977
- 1977-03-08 IT IT4836977A patent/IT1077998B/en active
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