EP2198110A1 - Bit assembly - Google Patents
Bit assemblyInfo
- Publication number
- EP2198110A1 EP2198110A1 EP08787686A EP08787686A EP2198110A1 EP 2198110 A1 EP2198110 A1 EP 2198110A1 EP 08787686 A EP08787686 A EP 08787686A EP 08787686 A EP08787686 A EP 08787686A EP 2198110 A1 EP2198110 A1 EP 2198110A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bit
- ring
- pilot
- casing tube
- extension
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000009527 percussion Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- 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
- E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
Definitions
- the invention relates to a bit assembly in a drilling apparatus said apparatus working by hammering and/or rotating said assembly comprising of a pilot bit, drilling the central part of the hole and a ring bit fitted in connection with the said pilot bit and furnished with cylindrical inner surface drilling the outer surface of said hole, and further, between the pilot bit and the ring bit a blocking arrangement of mutual rotation and axial movement, whereby opening of said blocking arrangement makes it possible to pull the pilot bit off the hole, while the ring bit remains in the hole, and the bit assembly comprises a casing tube and its extension, and an interlocking system which is through a ring-shaped device from the extension of the casing tube adapted to transfer pulling force from the pilot or ring bit to the casing tube extension, and said interlocking system can be opened in order to continue drilling with the ring and pilot bits, when the casing tube remains in its place.
- the figure 1 shows a pilot bit 1, comprising of a stem 13, a percussion face 14 furnished with bit buttons and a cylindrical portion 16, which has longitudinal grooves, such as flushing grooves 12 and grooves 17 lower than former ones intended for locking as well as transverse grooves 10 for locking.
- the front edge of the cylindrical portion 16 is as to its diameter a smaller cylindrical portion.
- the drill waste flushing grooves 12 are deeper than the longitudinal ones on the pilot bit surface.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20070540A FI20070540A0 (en) | 2007-07-10 | 2007-07-10 | cutting arrangement |
PCT/FI2008/000087 WO2009007494A1 (en) | 2007-07-10 | 2008-07-10 | Bit assembly |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2198110A1 true EP2198110A1 (en) | 2010-06-23 |
EP2198110A4 EP2198110A4 (en) | 2015-12-23 |
EP2198110B1 EP2198110B1 (en) | 2017-02-15 |
Family
ID=38331557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08787686.8A Not-in-force EP2198110B1 (en) | 2007-07-10 | 2008-07-10 | Bit assembly |
Country Status (9)
Country | Link |
---|---|
US (1) | US20100200303A1 (en) |
EP (1) | EP2198110B1 (en) |
JP (1) | JP5443349B2 (en) |
KR (1) | KR101678358B1 (en) |
BR (1) | BRPI0814214A2 (en) |
CA (1) | CA2693781A1 (en) |
ES (1) | ES2625464T3 (en) |
FI (1) | FI20070540A0 (en) |
WO (1) | WO2009007494A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI125204B (en) * | 2010-10-15 | 2015-06-30 | Robit Rocktools Ltd | A drill bit assembly |
WO2015011336A1 (en) * | 2013-07-26 | 2015-01-29 | Oy Atlas Copco Rotex Ab | Method in putting together of a down-the-hole drilling apparatus and a down-the-hole drilling apparatus |
CN104453707A (en) * | 2014-12-15 | 2015-03-25 | 中煤科工集团西安研究院有限公司 | Forming device and method of underground large-diameter horizontal rescue borehole for mine accidents |
CN106285529B (en) * | 2015-05-11 | 2019-04-05 | 中国石油化工股份有限公司 | A kind of releasing device |
FI20165116L (en) * | 2016-02-17 | 2017-08-18 | Geonex Oy | Drilling device |
EP3658741A4 (en) * | 2017-07-24 | 2021-03-24 | Luc Charland | Drilling system and method of using same |
JP7433026B2 (en) | 2019-11-25 | 2024-02-19 | 芝浦機械株式会社 | Forming roll temperature control device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995034740A1 (en) * | 1994-06-10 | 1995-12-21 | Ilomaeki Valto | Drilling apparatus |
FI96356C (en) * | 1994-12-13 | 1999-12-18 | Valto Ilomaeki | Drilling method and blade assembly to implement the method |
JP2997998B2 (en) * | 1995-10-23 | 2000-01-11 | ヤマモトロックマシン株式会社 | Casing dug bits |
FI98649C (en) * | 1995-11-06 | 1997-07-25 | Valto Ilomaeki | A method for drilling a hole and an arrangement for carrying out the method |
SE512383C3 (en) * | 1997-08-08 | 2000-04-03 | Sandvik Ab | Drilling tools for drilling a haul in front of a feed rudder retaining means and base elements for use in the drilling tool |
WO2000031373A1 (en) * | 1998-11-23 | 2000-06-02 | Ilomaeki Valto | A method for mounting a casing shoe on a drilling apparatus |
JP2000204870A (en) * | 1999-01-19 | 2000-07-25 | Kfc Ltd | Boring device |
JP3750516B2 (en) * | 2000-04-25 | 2006-03-01 | 三菱マテリアル株式会社 | Drilling tools |
JP3755124B2 (en) * | 2000-10-30 | 2006-03-15 | 株式会社間組 | Drilling bit |
SE522135C2 (en) * | 2001-07-02 | 2004-01-13 | Uno Loef | Drilling tools for lowering drilling |
FI115661B (en) * | 2002-12-23 | 2005-06-15 | Robit Rocktools Ltd | A bit assembly |
JP4001346B2 (en) * | 2004-10-05 | 2007-10-31 | 鹿島建設株式会社 | Drilling device |
JP2006291660A (en) * | 2005-04-14 | 2006-10-26 | Okabe Co Ltd | Double tube hole drilling device and anchor material arranging method using small diameter double tube hole drilling device |
-
2007
- 2007-07-10 FI FI20070540A patent/FI20070540A0/en not_active Application Discontinuation
-
2008
- 2008-07-10 KR KR1020107003054A patent/KR101678358B1/en active IP Right Grant
- 2008-07-10 JP JP2010515539A patent/JP5443349B2/en not_active Expired - Fee Related
- 2008-07-10 WO PCT/FI2008/000087 patent/WO2009007494A1/en active Application Filing
- 2008-07-10 ES ES08787686.8T patent/ES2625464T3/en active Active
- 2008-07-10 CA CA2693781A patent/CA2693781A1/en not_active Abandoned
- 2008-07-10 US US12/668,323 patent/US20100200303A1/en not_active Abandoned
- 2008-07-10 BR BRPI0814214-9A2A patent/BRPI0814214A2/en not_active Application Discontinuation
- 2008-07-10 EP EP08787686.8A patent/EP2198110B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2009007494A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2198110B1 (en) | 2017-02-15 |
WO2009007494A1 (en) | 2009-01-15 |
JP5443349B2 (en) | 2014-03-19 |
CA2693781A1 (en) | 2009-01-15 |
KR20100043222A (en) | 2010-04-28 |
KR101678358B1 (en) | 2016-11-23 |
BRPI0814214A2 (en) | 2015-01-27 |
EP2198110A4 (en) | 2015-12-23 |
FI20070540A0 (en) | 2007-07-10 |
JP2010533250A (en) | 2010-10-21 |
ES2625464T3 (en) | 2017-07-19 |
US20100200303A1 (en) | 2010-08-12 |
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