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 sleeve

Info

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
Application number
IT4836977A
Other languages
Italian (it)
Original Assignee
Christensen Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Christensen Inc filed Critical Christensen Inc
Priority to IT4836977A priority Critical patent/IT1077998B/en
Application granted granted Critical
Publication of IT1077998B publication Critical patent/IT1077998B/en

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.
IT4836977A 1977-03-08 1977-03-08 Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve IT1077998B (en)

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)

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