BR9811389A - Rotary drill bit for drilling a borehole in an earth formation - Google Patents

Rotary drill bit for drilling a borehole in an earth formation

Info

Publication number
BR9811389A
BR9811389A BR9811389-5A BR9811389A BR9811389A BR 9811389 A BR9811389 A BR 9811389A BR 9811389 A BR9811389 A BR 9811389A BR 9811389 A BR9811389 A BR 9811389A
Authority
BR
Brazil
Prior art keywords
cutting
borehole
drill bit
earth formation
drilling
Prior art date
Application number
BR9811389-5A
Other languages
Portuguese (pt)
Inventor
Djurre Hans Zijsling
Original Assignee
Shell Int Research
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 filed Critical Shell Int Research
Publication of BR9811389A publication Critical patent/BR9811389A/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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement
    • 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/12—Roller bits with discs cutters

Landscapes

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

Abstract

"BROCA DE PERFURAçãO ROTATIVA PARA PERFURAR UM FURO DE SONDAGEM EM UMA FORMAçãO DE TERRA". é fornecida uma broca de perfuração rotativa para perfurar um furo de sondagem em uma formação de terra. A broca de perfuração compreende uma pluralidade de elementos de corte (7, 9) arranjados para cortar uma pluralidade de cortes substancialmente circulares e espaçados radialmente (22, 24, 26) no fundo do furo de sondagem, os elementos de corte incluindo pelo menos um elemento de corte/cisalhamento (7), cada elemento de corte/cisalhamento sendo arranjado de modo a cortar no fundo do furo de sondagem com um intervalo angular, um depois do outro de ditos elementos de corte (9). Um corpo de material rochoso (28) é definido entre as trajetórias dos cortes criados pelo elemento de corte/cisalhamento e dito outro elemento de corte. O elemento de corte/cisalhamento é dotado de meios para cisalha dito corpo de material rochoso na direção do corte criado por dito outro elemento de corte."ROTARY DRILLING DRILL TO DRILL A DRILLING HOLE IN AN EARTH FORMATION". a rotary drill bit is provided to drill a borehole in an earth formation. The drill bit comprises a plurality of cutting elements (7, 9) arranged to cut a plurality of substantially circular and radially spaced cuts (22, 24, 26) at the bottom of the borehole, the cutting elements including at least one cutting / shearing element (7), each cutting / shearing element being arranged so as to cut at the bottom of the borehole with an angular gap, one after the other of said cutting elements (9). A body of rocky material (28) is defined between the trajectories of the cuts created by the cutting / shearing element and said another cutting element. The cutting / shearing element is provided with means for shearing said body of rock material in the direction of the cut created by said other cutting element.

BR9811389-5A 1997-08-28 1998-08-28 Rotary drill bit for drilling a borehole in an earth formation BR9811389A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP97306602 1997-08-28
PCT/EP1998/005703 WO1999011900A1 (en) 1997-08-28 1998-08-28 Drill bit

Publications (1)

Publication Number Publication Date
BR9811389A true BR9811389A (en) 2000-08-29

Family

ID=8229483

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9811389-5A BR9811389A (en) 1997-08-28 1998-08-28 Rotary drill bit for drilling a borehole in an earth formation

Country Status (12)

Country Link
CN (1) CN1098400C (en)
AR (1) AR016883A1 (en)
AU (1) AU727657B2 (en)
BR (1) BR9811389A (en)
CA (1) CA2300158A1 (en)
EG (1) EG21701A (en)
GB (1) GB2344842B (en)
ID (1) ID24483A (en)
NO (1) NO318151B1 (en)
OA (1) OA11327A (en)
RU (1) RU2206701C2 (en)
WO (1) WO1999011900A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR030606A1 (en) * 2000-09-08 2003-08-27 Shell Int Research BARRENA DRILL
CN102747960A (en) * 2012-07-11 2012-10-24 江汉石油钻头股份有限公司 Hybrid drill bit
CN112557092B (en) * 2020-12-29 2022-08-09 中国原子能科学研究院 Sampling device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US511894A (en) * 1894-01-02 Display-case
BE639074A (en) * 1962-10-23
US3265139A (en) * 1963-12-09 1966-08-09 Continental Oil Co Roller cone drill bit
JPS59122690A (en) * 1982-12-28 1984-07-16 住友金属鉱山株式会社 Underground drilling drill bit
US5111894A (en) * 1990-08-23 1992-05-12 Sybil J. Williams Uninterrupted drill bit
US5311958A (en) * 1992-09-23 1994-05-17 Baker Hughes Incorporated Earth-boring bit with an advantageous cutting structure
US5394952A (en) * 1993-08-24 1995-03-07 Smith International, Inc. Core cutting rock bit

Also Published As

Publication number Publication date
NO318151B1 (en) 2005-02-07
EG21701A (en) 2002-02-27
NO20000938L (en) 2000-02-25
RU2206701C2 (en) 2003-06-20
GB2344842B (en) 2001-11-28
WO1999011900A1 (en) 1999-03-11
ID24483A (en) 2000-07-20
AU9537898A (en) 1999-03-22
CA2300158A1 (en) 1999-03-11
AR016883A1 (en) 2001-08-01
NO20000938D0 (en) 2000-02-25
CN1098400C (en) 2003-01-08
GB2344842A (en) 2000-06-21
AU727657B2 (en) 2000-12-21
GB0003248D0 (en) 2000-04-05
CN1268991A (en) 2000-10-04
OA11327A (en) 2003-12-09

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: "INDEFERIDO COM BASE NO ART. 8O EM VISTA DO ART. 13 DA LPI."