EP3617439B1 - Bohrer mit gekrümmten schlammnuten - Google Patents

Bohrer mit gekrümmten schlammnuten Download PDF

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Publication number
EP3617439B1
EP3617439B1 EP18191621.4A EP18191621A EP3617439B1 EP 3617439 B1 EP3617439 B1 EP 3617439B1 EP 18191621 A EP18191621 A EP 18191621A EP 3617439 B1 EP3617439 B1 EP 3617439B1
Authority
EP
European Patent Office
Prior art keywords
drill bit
ribs
channels
skirt
face
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.)
Active
Application number
EP18191621.4A
Other languages
English (en)
French (fr)
Other versions
EP3617439A1 (de
Inventor
John Hammargren
David Wickström
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.)
Sandvik Mining and Construction Tools AB
Original Assignee
Sandvik Mining and Construction Tools AB
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
Priority to EP18191621.4A priority Critical patent/EP3617439B1/de
Application filed by Sandvik Mining and Construction Tools AB filed Critical Sandvik Mining and Construction Tools AB
Priority to PL18191621T priority patent/PL3617439T3/pl
Priority to CA3107849A priority patent/CA3107849A1/en
Priority to PE2021000137A priority patent/PE20211613A1/es
Priority to MX2021002224A priority patent/MX2021002224A/es
Priority to PCT/EP2019/071966 priority patent/WO2020043504A1/en
Priority to JP2021510736A priority patent/JP2021535299A/ja
Priority to BR112021003320-3A priority patent/BR112021003320A2/pt
Priority to US17/271,143 priority patent/US20210238927A1/en
Priority to CN201980055325.0A priority patent/CN112585333A/zh
Priority to KR1020217005480A priority patent/KR20210049810A/ko
Priority to AU2019328385A priority patent/AU2019328385A1/en
Publication of EP3617439A1 publication Critical patent/EP3617439A1/de
Priority to ZA2021/00662A priority patent/ZA202100662B/en
Priority to CL2021000465A priority patent/CL2021000465A1/es
Application granted granted Critical
Publication of EP3617439B1 publication Critical patent/EP3617439B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

Definitions

  • the axially rearward part extends up to 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90% of the length of the skirt between an axially rearwardmost region of the head and the axially rearward end of the skirt.
  • the axially rearward part extends over a majority of the length of the skirt.
  • the axially rearward part extends over 30 to 80%, 40 to 80%, 50 to 80% or 50 to 70% of the length of the skirt between an axially rearwardmost region of the head and the axially rearward end of the skirt.
  • an angle by which the ribs are bent or curved such that their length deviates in a circumferential direction is in the range 1 to 20°, 1 to 18°, 1 to 16°, 1 to 14°, 1 to 12°, 2 to 12°, 3 to 10°, 3 to 8° or 4 to 6° relative to the longitudinal axis.
  • Such oblique alignment of the ribs is effective to prevent the drill bit getting stuck during extraction by appropriately directing the flushing fluid and cut rock axially rearward away from the drill bit.
  • each of the channels 12a, 12b along the length of skirt 12 between neck 12d and rearward end 12e are defined (i.e., flanked) by axially extending ribs indicated generally by reference 17. That is, ribs 17 extend the full length of skirt 12 from head 11 to skirt rearward end 12e. A thickness in the circumferential direction of each rib 17 is non-uniform and changes in a direction of axis 19 between neck 12d and skirt rearward end 12e. Moreover, each rib 17 is curved (alternatively termed angled or bent) in its lengthwise direction between neck 12d and skirt rearward end 12e so as to deviate or deflect in the circumferential direction.
  • each rib 17 and channel 18a, 18b may be defined further to include a radially innermost trough 22 which in the lengthwise direction is flanked at a first side by a leading face 20 and an opposite side by a trailing face 25. Faces 20, 25 are so named with reference to the rotational direction R ( figure 4 ).
  • Each rib 17 comprises a land face 23 representing a radially outermost region of skirt 12 within each section 12a, 12b, 12c.
  • the land face 23 is terminated at each side (in a circumferential direction around axis 19) by a leading edge 21 at the junction with leading face 20 and a trailing edge 24 at the junction with trailing face 25.

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)
  • Drilling Tools (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (13)

  1. Schlagbohrer (10), umfassend:
    eine Kopf (11) mit Schneidelementen (14a, 14b) zum Abschleifen von Gestein durch Drehung des Bohrers (10) um seine Längsachse (19);
    eine Schürze (12), die sich axial von dem Kopf (11) nach hinten erstreckt;
    eine Vielzahl von Rippen (17) die radial nach außen ragen und sich axial entlang der Schürze (12) erstrecken, um sich axial erstreckende Kanäle (18a, 18b) zu definieren, wobei die Rippe und Kanäle jeweils eine Länge aufweisen, die sich axial in einer Richtung zwischen dem Kopf (11) und einem axial hinteren Ende (12e) der Schürze (12) erstreckt;
    in der Längsrichtung mindestens ein Teil der Rippen (17) und Kanäle (18a, 18b) gebogen oder gekrümmt sind, sodass der Längsteil der Rippen (17) oder Kanäle (18a, 18b) schräg zu der Längsachse ist,
    wobei jede Rippe eine Vorderfläche (20) und eine Rückfläche (25) umfasst, die durch einen radial nach außen weisende Ansatzfläche (23) getrennt sind, wobei die Vorder- und Rückfläche (20, 25) mindestens teilweise die Kanäle (18a, 18b) definieren;
    dadurch gekennzeichnet, dass:
    bei einer Querschnittsebene senkrecht zu der Längsachse die Vorderfläche (20) im Allgemeinen normal zu der Drehrichtung (R) des Bohrers um die Achse (19) ausgerichtet ist.
  2. Schlagbohrer nach Anspruch 1, wobei der Teil der Rippen (17) und Kanäle (18a, 18b), die schräg zu der Längsachse (19) sind, an einem axial hinteren Teil der Schürze (12) positioniert sind.
  3. Schlagbohrer nach Anspruch 2, wobei ein axial vorderer Teil der Rippen (17) und Kanäle (18a, 18b) im Allgemeinen parallel zu der Längsachse (19) ausgerichtet sind.
  4. Schlagbohrer nach Anspruch 2 oder 3, wobei der axial hintere Teil sich bis zu 20%, 30%, 40%, 50%, 60%, 70%, 80% oder 90% der Länge der Schürze zwischen einem axial hintersten Gebiet (12d) des Kopfs (11) und einem axial hintersten Ende (12e) der Schürze (12) erstreckt.
  5. Schlagbohrer nach einem vorstehenden Anspruch, wobei der Längsteil der Rippen und Kanäle mindestens teilweise spiralförmig um die Achse (19) sind.
  6. Schlagbohrer nach Anspruch 5, wobei in der Längsrichtung sowohl die Vorder- als auch Rückfläche (20, 25) der Rippen (17) in derselben Umfangsrichtung um die Achse (19) gebogen oder gekrümmt sind, um schräg zu der Achse (19) ausgerichtet zu sein.
  7. Schlagbohrer nach einem vorstehenden Anspruch, wobei in der Längsrichtung mindestens ein Teil einer Vorderkante (21) und einer Hinterkante (24) der Rippen (17) an der Verbindung zwischen der Ansatzfläche (23) und der entsprechenden Landefläche Vorderfläche (20) und Rückfläche (25) gebogen oder gekrümmt ist, um schräg zu der Achse (19) ausgerichtet zu sein.
  8. Schlagbohrer nach Anspruch 7, wobei der Teil der Vorderkante (21) und die Hinterkante (24), die schräg zur Achse (19) sind, bei einem axial hinteren Teil der Schürze (12) positioniert sind.
  9. Schlagbohrer nach einem vorstehenden Anspruch, wobei in der Querschnittsebene senkrecht zur Achse (19) die Rückfläche (25) quer zur Drehrichtung (R) des Bohrers (10) und/oder schräg zur Vorderfläche (20) ausgerichtet ist.
  10. Schlagbohrer nach einem vorstehenden Anspruch, wobei ein Winkel (θ), in dem die Rippen (17) gebogen oder gekrümmt sind, sodass ihre Länge in einer Umfangsrichtung abweicht, im Bereich von 1 bis 20° relativ zu der Achse (19) ist.
  11. Schlagbohrer nach Anspruch 10, wobei der Bereich 3 bis 10°, 3 bis 8° oder 4 bis 6° ist.
  12. Schlagbohrer nach einem vorstehenden Anspruch, umfassend eine Innenbohrung (26) und Durchgänge (27), die sich axial von einem vorderen Ende (28) der Bohrung (26) erstrecken, um als Öffnungen (15) an einer vorderen Schneidfläche (13) des Kopfs (11) zu erscheinen, wobei mindestens einige der Kanäle (18a) sich axial entlang des Kopfs (11) in Kommunikation mit den Öffnungen (15) erstrecken.
  13. Schlagbohrer nach einem vorstehenden Anspruch, wobei die Schneidelemente Schneidknöpfe (14a, 14b) umfassen, die in dem Kopf (11) eingebettet sind.
EP18191621.4A 2018-08-30 2018-08-30 Bohrer mit gekrümmten schlammnuten Active EP3617439B1 (de)

Priority Applications (14)

Application Number Priority Date Filing Date Title
PL18191621T PL3617439T3 (pl) 2018-08-30 2018-08-30 Wiertnicze narzędzie z zakrzywionymi rowkami dla szlamu
EP18191621.4A EP3617439B1 (de) 2018-08-30 2018-08-30 Bohrer mit gekrümmten schlammnuten
AU2019328385A AU2019328385A1 (en) 2018-08-30 2019-08-15 Drill bit with curved sludge grooves
MX2021002224A MX2021002224A (es) 2018-08-30 2019-08-15 Barrena de perforacion con surcos de fango curvos.
PCT/EP2019/071966 WO2020043504A1 (en) 2018-08-30 2019-08-15 Drill bit with curved sludge grooves
JP2021510736A JP2021535299A (ja) 2018-08-30 2019-08-15 湾曲したスラッジ溝を有するドリルビット
BR112021003320-3A BR112021003320A2 (pt) 2018-08-30 2019-08-15 broca com sulcos de lama encurvados
US17/271,143 US20210238927A1 (en) 2018-08-30 2019-08-15 Drill bit with curved sludge grooves
CA3107849A CA3107849A1 (en) 2018-08-30 2019-08-15 Drill bit with curved sludge grooves
KR1020217005480A KR20210049810A (ko) 2018-08-30 2019-08-15 만곡된 슬러지 그루브들을 갖는 드릴 비트
PE2021000137A PE20211613A1 (es) 2018-08-30 2019-08-15 Barrena de perforacion con surcos de fango curvos
CN201980055325.0A CN112585333A (zh) 2018-08-30 2019-08-15 带有弯曲的泥浆沟槽的钻头
ZA2021/00662A ZA202100662B (en) 2018-08-30 2021-01-29 Drill bit with curved sludge grooves
CL2021000465A CL2021000465A1 (es) 2018-08-30 2021-02-24 Barrena de perforación con surcos de fango curvos.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18191621.4A EP3617439B1 (de) 2018-08-30 2018-08-30 Bohrer mit gekrümmten schlammnuten

Publications (2)

Publication Number Publication Date
EP3617439A1 EP3617439A1 (de) 2020-03-04
EP3617439B1 true EP3617439B1 (de) 2021-07-28

Family

ID=63449319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18191621.4A Active EP3617439B1 (de) 2018-08-30 2018-08-30 Bohrer mit gekrümmten schlammnuten

Country Status (14)

Country Link
US (1) US20210238927A1 (de)
EP (1) EP3617439B1 (de)
JP (1) JP2021535299A (de)
KR (1) KR20210049810A (de)
CN (1) CN112585333A (de)
AU (1) AU2019328385A1 (de)
BR (1) BR112021003320A2 (de)
CA (1) CA3107849A1 (de)
CL (1) CL2021000465A1 (de)
MX (1) MX2021002224A (de)
PE (1) PE20211613A1 (de)
PL (1) PL3617439T3 (de)
WO (1) WO2020043504A1 (de)
ZA (1) ZA202100662B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022071528A (ja) * 2020-10-28 2022-05-16 Ｍｍｃリョウテック株式会社 掘削ビット

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8628168D0 (en) * 1986-11-22 1986-12-31 Nl Petroleum Prod Rotary drill bits
GB2212091B (en) * 1987-11-12 1992-01-22 Boart Hardmetals Drilling equipment
JPH0932454A (ja) * 1995-07-18 1997-02-04 Toho Kinzoku Kk ロックビット
SE526344C2 (sv) * 2003-12-09 2005-08-30 Sandvik Intellectual Property Bergborrkrona
SE530135C2 (sv) * 2004-09-21 2008-03-11 Sandvik Intellectual Property Bergborrkrona anpassad för slående borrning
WO2008097843A2 (en) * 2007-02-02 2008-08-14 Halliburton Energy Services, Inc. Rotary drill bit steerable system and method
GB201010061D0 (en) * 2010-06-16 2010-07-21 Element Six Ltd Rotary machine tools
JP2014196655A (ja) * 2013-03-05 2014-10-16 三菱マテリアル株式会社 掘削ビット
PL2865843T3 (pl) * 2013-10-28 2016-07-29 Sandvik Intellectual Property Udarowy świder wiertniczy ze zoptymalizowanymi słupkami zewnętrznymi

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3617439A1 (de) 2020-03-04
AU2019328385A1 (en) 2021-03-11
CA3107849A1 (en) 2020-03-05
KR20210049810A (ko) 2021-05-06
BR112021003320A2 (pt) 2021-08-10
CL2021000465A1 (es) 2021-07-23
WO2020043504A1 (en) 2020-03-05
MX2021002224A (es) 2021-05-14
JP2021535299A (ja) 2021-12-16
CN112585333A (zh) 2021-03-30
PE20211613A1 (es) 2021-08-23
ZA202100662B (en) 2022-07-27
PL3617439T3 (pl) 2021-12-06
US20210238927A1 (en) 2021-08-05

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