NL7702561A - 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
NL7702561A
NL7702561A NL7702561A NL7702561A NL7702561A NL 7702561 A NL7702561 A NL 7702561A NL 7702561 A NL7702561 A NL 7702561A NL 7702561 A NL7702561 A NL 7702561A NL 7702561 A NL7702561 A NL 7702561A
Authority
NL
Netherlands
Prior art keywords
sleeve
drill string
stabilizer
well drill
readily removable
Prior art date
Application number
NL7702561A
Other languages
Dutch (nl)
Other versions
NL173085B (en
NL173085C (en
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 NL7702561A priority Critical patent/NL173085C/en
Publication of NL7702561A publication Critical patent/NL7702561A/en
Publication of NL173085B publication Critical patent/NL173085B/en
Application granted granted Critical
Publication of NL173085C publication Critical patent/NL173085C/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

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.
NL7702561A 1977-03-09 1977-03-09 STABILIZER FOR A DRILLING COLUMN. NL173085C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7702561A NL173085C (en) 1977-03-09 1977-03-09 STABILIZER FOR A DRILLING COLUMN.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7702561A NL173085C (en) 1977-03-09 1977-03-09 STABILIZER FOR A DRILLING COLUMN.

Publications (3)

Publication Number Publication Date
NL7702561A true NL7702561A (en) 1978-09-12
NL173085B NL173085B (en) 1983-07-01
NL173085C NL173085C (en) 1983-12-01

Family

ID=19828138

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7702561A NL173085C (en) 1977-03-09 1977-03-09 STABILIZER FOR A DRILLING COLUMN.

Country Status (1)

Country Link
NL (1) NL173085C (en)

Also Published As

Publication number Publication date
NL173085B (en) 1983-07-01
NL173085C (en) 1983-12-01

Similar Documents

Publication Publication Date Title
NO993070L (en) Drill pipe / casing - protector
EP0139831A3 (en) Fluid pressure assisted rotary shaft seal with labyrinth bushing and replacement seal sleeve cartridge
AU646395B2 (en) Drill string joint with rotatable outer sleeve
GB1404650A (en) Well drilling eypansion joint apparatus
NO20051298L (en) Casing protection device
GB1430494A (en) Drill collars for rotary drill strings
SE7902763L (en) Rock drill bit
JPS62296090A (en) Rotary shaft seal apparatus for cutter of drill bit
TW200510647A (en) Hydraulic nut and method of use thereof
ES478996A1 (en) Power steering valve and method of making the same
EP1013876A3 (en) Face seal for rock bits
US4911255A (en) Means for retaining roller cutters on rotary drill bit
MX9606083A (en) Oil seal extender.
IT1077998B (en) Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve
NL7702561A (en) Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve
FR2383304A1 (en) Stabilizer for rotary well drill string - including tubular sub with readily removable shrink fitted wear resisting sleeve
EP0757154A3 (en) Earth boring bit with improved bearing seal
EP0261082A3 (en) Mechanical seal with a reduced axial length for hydraulic pumps
US3069821A (en) Journal construction for resilient surfaced rollers in ink or water motions
GB930283A (en) Improvements in or relating to plain bearings
US2496569A (en) Wash pipe for rotary swivels
GB955263A (en) Improvements in or relating to packings
CN218493783U (en) Bearing and rotating device for oil extraction screw pump
SE8203716L (en) DRILL HAMMER WITH TOOL HOLDER
SU779686A1 (en) Built up piston

Legal Events

Date Code Title Description
BB A search report has been drawn up
BC A request for examination has been filed
V1 Lapsed because of non-payment of the annual fee