WO2002020936A3 - Drill bit - Google Patents

Drill bit Download PDF

Info

Publication number
WO2002020936A3
WO2002020936A3 PCT/EP2001/010406 EP0110406W WO0220936A3 WO 2002020936 A3 WO2002020936 A3 WO 2002020936A3 EP 0110406 W EP0110406 W EP 0110406W WO 0220936 A3 WO0220936 A3 WO 0220936A3
Authority
WO
WIPO (PCT)
Prior art keywords
drill bit
disc cutter
cut
borehole
cuts
Prior art date
Application number
PCT/EP2001/010406
Other languages
French (fr)
Other versions
WO2002020936A2 (en
Inventor
Frederik Damhof
Djurre Hans Zijsling
Original Assignee
Shell Int Research
Shell Canada Ltd
Frederik Damhof
Djurre Hans Zijsling
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 Shell Int Research, Shell Canada Ltd, Frederik Damhof, Djurre Hans Zijsling filed Critical Shell Int Research
Priority to GB0304377A priority Critical patent/GB2384505B/en
Priority to BR0113687-9A priority patent/BR0113687A/en
Priority to CA002421288A priority patent/CA2421288A1/en
Priority to AU2002212221A priority patent/AU2002212221B2/en
Priority to MXPA03001924A priority patent/MXPA03001924A/en
Priority to AU1222102A priority patent/AU1222102A/en
Priority to US10/363,975 priority patent/US20040020693A1/en
Publication of WO2002020936A2 publication Critical patent/WO2002020936A2/en
Publication of WO2002020936A3 publication Critical patent/WO2002020936A3/en
Priority to NO20031055A priority patent/NO20031055L/en

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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/12—Roller bits with discs cutters
    • 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
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement

Abstract

The invention relates to a rotary drill bit for drilling a borehole in an earth formation, the drill bit comprising a first and a second disc cutter, each disc cutter being arranged to roll along the borehole bottom during rotation of the drill bit and thereby to cut respective first and second substantially circular, radially spaced cuts in the borehole bottom so that a body of rock material is defined between said cuts. The second disc cutter is arranged to cut into the bottom of the borehole at a selected rotational interval of the drill bit behind the first disc cutter and to shear-off said body of rock material in the direction of the first cut. Each disc cutter includes a set of mutually spaced cutting members arranged to create, during a turn of the drill bit, a corresponding set of cut sections of the cut created by the disc cutter, and wherein the cutting members are arranged so that the sets of cut sections created during subsequent drill bit turns are staggered relative to each other.
PCT/EP2001/010406 2000-09-08 2001-09-06 Drill bit WO2002020936A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB0304377A GB2384505B (en) 2000-09-08 2001-09-06 Drill bit
BR0113687-9A BR0113687A (en) 2000-09-08 2001-09-06 Burglary rotary drilling rig
CA002421288A CA2421288A1 (en) 2000-09-08 2001-09-06 Drill bit
AU2002212221A AU2002212221B2 (en) 2000-09-08 2001-09-06 Drill bit
MXPA03001924A MXPA03001924A (en) 2000-09-08 2001-09-06 Drill bit.
AU1222102A AU1222102A (en) 2000-09-08 2001-09-06 Drill bit
US10/363,975 US20040020693A1 (en) 2000-09-08 2001-09-06 Drill bit
NO20031055A NO20031055L (en) 2000-09-08 2003-03-07 Drill bit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP00203110 2000-09-08
EP00203110.2 2000-09-08

Publications (2)

Publication Number Publication Date
WO2002020936A2 WO2002020936A2 (en) 2002-03-14
WO2002020936A3 true WO2002020936A3 (en) 2002-05-16

Family

ID=8171995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/010406 WO2002020936A2 (en) 2000-09-08 2001-09-06 Drill bit

Country Status (13)

Country Link
US (1) US20040020693A1 (en)
CN (1) CN1304719C (en)
AR (1) AR030606A1 (en)
AU (2) AU1222102A (en)
BR (1) BR0113687A (en)
CA (1) CA2421288A1 (en)
EG (1) EG22664A (en)
GB (1) GB2384505B (en)
GC (1) GC0000369A (en)
MX (1) MXPA03001924A (en)
NO (1) NO20031055L (en)
OA (1) OA12369A (en)
WO (1) WO2002020936A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10036205B2 (en) 2015-06-04 2018-07-31 The Charles Machine Works, Inc. Stacked-plate reamer
WO2017205507A1 (en) * 2016-05-25 2017-11-30 Baker Hughes Incorporated Roller cone earth-boring rotary drill bits including disk heels and related systems and methods
US10941644B2 (en) 2018-02-20 2021-03-09 Saudi Arabian Oil Company Downhole well integrity reconstruction in the hydrocarbon industry
US11739616B1 (en) 2022-06-02 2023-08-29 Saudi Arabian Oil Company Forming perforation tunnels in a subterranean formation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333746A (en) * 1940-07-11 1943-11-09 Hughes Tool Co Cutter teeth for well drills
US3018835A (en) * 1956-11-01 1962-01-30 Reed Roller Bit Co Drill bit for producing an irregular indentation pattern on the bottom of a well bore
US3265139A (en) * 1963-12-09 1966-08-09 Continental Oil Co Roller cone drill bit
US4187922A (en) * 1978-05-12 1980-02-12 Dresser Industries, Inc. Varied pitch rotary rock bit
US5111894A (en) * 1990-08-23 1992-05-12 Sybil J. Williams Uninterrupted drill bit
WO1999011900A1 (en) * 1997-08-28 1999-03-11 Shell Internationale Research Maatschappij B.V. Drill bit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246418A (en) * 1938-03-14 1941-06-17 Union Oil Co Art of well drilling
US2533258A (en) * 1945-11-09 1950-12-12 Hughes Tool Co Drill cutter
DE1218973B (en) * 1963-07-25 1966-06-16 Soeding & Halbach J C Cutting roller, especially for expansion roller chisels
US4270620A (en) * 1979-01-12 1981-06-02 Dailey Oil Tools, Inc. Constant bottom contact tool
US5586611A (en) * 1995-10-13 1996-12-24 Cypress Services, Inc. Drill bit having dual split bushings for cutter support and retention
US6808027B2 (en) * 2001-06-11 2004-10-26 Rst (Bvi), Inc. Wellbore directional steering tool
US20030136588A1 (en) * 2002-01-24 2003-07-24 David Truax Roller cone drill bit having designed walk characteristics
US7219747B2 (en) * 2004-03-04 2007-05-22 Halliburton Energy Services, Inc. Providing a local response to a local condition in an oil well

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333746A (en) * 1940-07-11 1943-11-09 Hughes Tool Co Cutter teeth for well drills
US3018835A (en) * 1956-11-01 1962-01-30 Reed Roller Bit Co Drill bit for producing an irregular indentation pattern on the bottom of a well bore
US3265139A (en) * 1963-12-09 1966-08-09 Continental Oil Co Roller cone drill bit
US4187922A (en) * 1978-05-12 1980-02-12 Dresser Industries, Inc. Varied pitch rotary rock bit
US5111894A (en) * 1990-08-23 1992-05-12 Sybil J. Williams Uninterrupted drill bit
WO1999011900A1 (en) * 1997-08-28 1999-03-11 Shell Internationale Research Maatschappij B.V. Drill bit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KENNER J V ET AL: "IRREGULAR TOOTH SPACING REDUCES ROLLER CONE BIT TRACKING PROBLEMS", OIL AND GAS JOURNAL,US,PENNWELL PUBLISHING CO. TULSA, vol. 94, no. 20, 13 May 1996 (1996-05-13), pages 85 - 89, XP000595928, ISSN: 0030-1388 *

Also Published As

Publication number Publication date
GB2384505B (en) 2005-01-12
WO2002020936A2 (en) 2002-03-14
OA12369A (en) 2006-04-17
BR0113687A (en) 2003-07-15
NO20031055D0 (en) 2003-03-07
CA2421288A1 (en) 2002-03-14
CN1452685A (en) 2003-10-29
GB2384505A (en) 2003-07-30
EG22664A (en) 2003-05-31
NO20031055L (en) 2003-03-07
AU2002212221B2 (en) 2004-11-11
GC0000369A (en) 2007-03-31
AU1222102A (en) 2002-03-22
GB0304377D0 (en) 2003-04-02
MXPA03001924A (en) 2004-02-12
US20040020693A1 (en) 2004-02-05
CN1304719C (en) 2007-03-14
AR030606A1 (en) 2003-08-27

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