EP0298663A3 - Downhole cutting tool - Google Patents

Downhole cutting tool Download PDF

Info

Publication number
EP0298663A3
EP0298663A3 EP88305962A EP88305962A EP0298663A3 EP 0298663 A3 EP0298663 A3 EP 0298663A3 EP 88305962 A EP88305962 A EP 88305962A EP 88305962 A EP88305962 A EP 88305962A EP 0298663 A3 EP0298663 A3 EP 0298663A3
Authority
EP
European Patent Office
Prior art keywords
arm
cutting tool
extended position
downhole cutting
upper body
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.)
Withdrawn
Application number
EP88305962A
Other languages
German (de)
French (fr)
Other versions
EP0298663A2 (en
Inventor
Thomas Doig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tri State Oil Tool UK Ltd
Original Assignee
Tri State Oil Tool UK Ltd
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 Tri State Oil Tool UK Ltd filed Critical Tri State Oil Tool UK Ltd
Publication of EP0298663A2 publication Critical patent/EP0298663A2/en
Publication of EP0298663A3 publication Critical patent/EP0298663A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/02—Scrapers specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/02—Scrapers specially adapted therefor
    • E21B37/04—Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers

Abstract

The tool, for example an underreamer for descaling a casing (46), has an upper body (10) telescoped within a lower body (12) on which are pivoted operating arms (22). The arms (22) are deployed from a retracted to an extended position by the hydraulic pressure of drilling mud pumped through a through-bore (18) against a shoulder (26) causing the upper body (10) to move within the lower body (12), which movement pivots the arm (22) via camming surfaces (28,29).
In the fully extended position, an outer surface (44) of the arm (22) acts as a locating pad, and the arm is mechanically locked by mating surfaces (34,36).
EP88305962A 1987-07-08 1988-06-29 Downhole cutting tool Withdrawn EP0298663A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878716040A GB8716040D0 (en) 1987-07-08 1987-07-08 Underreamer for descaling
GB8716040 1987-07-08

Publications (2)

Publication Number Publication Date
EP0298663A2 EP0298663A2 (en) 1989-01-11
EP0298663A3 true EP0298663A3 (en) 1990-01-03

Family

ID=10620289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88305962A Withdrawn EP0298663A3 (en) 1987-07-08 1988-06-29 Downhole cutting tool

Country Status (3)

Country Link
EP (1) EP0298663A3 (en)
GB (1) GB8716040D0 (en)
NO (1) NO883016L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735359A (en) * 1996-06-10 1998-04-07 Weatherford/Lamb, Inc. Wellbore cutting tool
NO310311B1 (en) * 1999-06-24 2001-06-18 Thor Bjoernstad underreamed
WO2001066907A1 (en) * 2000-03-10 2001-09-13 Nortech Systems Limited Clean out tool
US10273783B2 (en) * 2014-03-11 2019-04-30 Qinterra Technologies As Tool for internal cleaning of a tubing or casing
CN104653154B (en) * 2015-02-25 2017-06-13 中国石油天然气股份有限公司 Drifting scraping integrated tool
CN110500062B (en) * 2018-05-17 2021-11-02 中国石油天然气股份有限公司 Rotary sizing gauge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756968A (en) * 1954-04-12 1956-07-31 Grant Oil Tool Company Expansible well scraper
US2823901A (en) * 1955-11-07 1958-02-18 Kammerer Jr Archer W Expansible rotary drilling tools
US3196960A (en) * 1963-03-19 1965-07-27 Lamphere Jean K Fluid pressure expansible drill bits
US4565252A (en) * 1984-03-08 1986-01-21 Lor, Inc. Borehole operating tool with fluid circulation through arms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756968A (en) * 1954-04-12 1956-07-31 Grant Oil Tool Company Expansible well scraper
US2823901A (en) * 1955-11-07 1958-02-18 Kammerer Jr Archer W Expansible rotary drilling tools
US3196960A (en) * 1963-03-19 1965-07-27 Lamphere Jean K Fluid pressure expansible drill bits
US4565252A (en) * 1984-03-08 1986-01-21 Lor, Inc. Borehole operating tool with fluid circulation through arms

Also Published As

Publication number Publication date
EP0298663A2 (en) 1989-01-11
NO883016D0 (en) 1988-07-06
NO883016L (en) 1989-01-09
GB8716040D0 (en) 1987-08-12

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