WO2009149158A4 - Methods of attaching a shank to a body of an earth boring tool including a load bearing joint and tools formed by such methods - Google Patents
Methods of attaching a shank to a body of an earth boring tool including a load bearing joint and tools formed by such methods Download PDFInfo
- Publication number
- WO2009149158A4 WO2009149158A4 PCT/US2009/046092 US2009046092W WO2009149158A4 WO 2009149158 A4 WO2009149158 A4 WO 2009149158A4 US 2009046092 W US2009046092 W US 2009046092W WO 2009149158 A4 WO2009149158 A4 WO 2009149158A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- earth
- drill bit
- shank assembly
- rotary drill
- bit body
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 6
- 229910045601 alloy Inorganic materials 0.000 claims 5
- 239000000956 alloy Substances 0.000 claims 5
- 239000011159 matrix material Substances 0.000 claims 4
- 229910000531 Co alloy Inorganic materials 0.000 claims 3
- 230000001154 acute effect Effects 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 2
- 239000000463 material Substances 0.000 claims 2
- 229910052759 nickel Inorganic materials 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- 230000003068 static effect Effects 0.000 claims 2
- 239000010936 titanium Substances 0.000 claims 2
- 229910052719 titanium Inorganic materials 0.000 claims 2
- 229910052580 B4C Inorganic materials 0.000 claims 1
- 229910052582 BN Inorganic materials 0.000 claims 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims 1
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 229910000990 Ni alloy Inorganic materials 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims 1
- 238000005219 brazing Methods 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims 1
- 229910003460 diamond Inorganic materials 0.000 claims 1
- 239000010432 diamond Substances 0.000 claims 1
- 229910052735 hafnium Inorganic materials 0.000 claims 1
- 150000001247 metal acetylides Chemical class 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 229910052715 tantalum Inorganic materials 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Abstract
Earth-boring rotary drill bits including a bit body attached to a shank assembly at a joint. In some embodiments, the joint may be configured to carry at least a portion of any tensile longitudinal and rotational load applied to the drill bit by mechanical interference at the joint. In additional embodiments, the joint may be configured to carry a selected portion of any tensile longitudinal load applied to the drill bit. Methods for attaching a shank assembly to a bit body of an earth-boring rotary drill bit include configuring a joint to carry at least a portion of any tensile longitudinal and rotational load applied to the drill bit by mechanical interference. Additional embodiments include configuring a joint to carry a selected portion of any tensile longitudinal load applied to the drill bit by mechanical interference.
Claims
1. An earth-boring rotary drill bit comprising: a bit body; and a shank assembly attached to the bit body at a threadless joint, the shank assembly comprising two or more separate members secured together around a portion of the bit body at the threadless joint, the threadless joint configured to carry at least a portion of any tensile longitudinal load applied to the earth-boring rotary drill bit and at least a portion of any rotational load applied to the earth-boring rotary drill bit by mechanical interference between the bit body and the shank assembly at the joint
2. The earth-boring rotary drill bit of claim 1, wherein the portion of the bit body comprises a male connection portion and the shank assembly further comprises a female connection portion configured to receive the male connection portion of the bit body at least partially therein.
3. The earth-boring rotary drill bit of claim 2, wherein the shank assembly comprises two or more separate members secured together around the male connection portion of the bit body.
4. The earth-boring rotary drill bit of any one of claims 1 through 3, wherein the bit body and the shank assembly have abutting surfaces concentric to an interface axis offset from a longitudinal axis of the earth-boring rotary drill bit
5. The earth-boring rotary drill bit of any one of claims 1 through 3, wherein the bit body and the shank assembly have abutting surfaces comprising at least one channel and at least one interlocking protrusion that extend circumferentially at least partially around a longitudinal axis of the earth-boring rotary drill bit.
6. The earth-boring rotary drill bit of claim 5, wherein at least one surface of the bit body comprises the at least one channel and at least one surface of the shank assembly comprises the at least one interlocking protrusion. 34
7. The earth-boring rotary drill bit of claim 5, wherein the at least one channel extends radially inward toward the longitudinal axis of the earth-boring rotary drill bit a distance of at least five percent (5%) of a radius of the shank assembly.
8. The earth-boring rotary drill bit of claim 4, wherein at least a portion of the abutting surfaces is oriented at an acute angle relative to the longitudinal axis of the earth-boring rotary drill bit, the angle being greater than about the arc-cotangent of a static coefficient of friction exhibited between the abutting surfaces.
9. The earth-boring rotary drill bit of any one of claims 1 through 3, wherein the bit body predominantly comprises a particle-matrix composite material, the particle-matrix composite material comprising a plurality of hard particles dispersed throughout a matrix material, the hard particles comprising a material selected from diamond, boron carbide, boron nitride, aluminum nitride, and carbides or borides of the group consisting of W, Ti, Mo, Nb, V, Hf, Zr, Si, Ta, and Cr, the matrix material selected from the group consisting of iron-based alloys, nickel-based alloys, cobalt-based alloys, titanium-based alloys, aluminum-based alloys, iron and nickel-based alloys, iron and cobalt-based alloys, and nickel and cobalt-based alloys.
10. The earth-boring rotary drill bit of any one of claims 1 through 3, further comprising at least one of a weld and a brazing material at an interface between abutting surfaces of the bit body and me shank assembly.
11. A method of attaching a shank assembly to a bit body of an earth-boring rotary drill bit, the method comprising: abutting at least one surface of a first member of the shank assembly against at least one surface of the bit body; abutting at least one surface of at least a second member of the shank assembly against the at least one surface of the bit body, securing the first member and the at least a second member of the shank assembly together around the at least one surface of the bit body to form a threadless joint; and configuring the joint to carry at least a portion of any tensile longitudinal load applied to the drill bit and at least a portion of any rotational load applied to the drill bit by mechanical interference between the bit body and the shank assembly at the joint.
12. The method of claim 11, wherein configuring the joint comprises causing the abutting surfaces of the shank and the bit body to be concentric to an interface axis offset from a longitudinal axis of the earth-boring rotary drill bit.
13. The method of claim 11, wherein configuring the joint comprises longitudinally interlocking at least one channel extending circumferentially at least partially around a longitudinal axis of the earth-boring rotary drill bit with at least one protrusion.
14. The method of claim 11 , wherein abutting at least one surface of a first member of the shank assembly against at least one surface of the bit body and abutting at least one surface of at least a second member of the shank assembly against the at least one surface of the bit body comprise placing a female connection portion of the shank assembly around a male connection portion of the bit body. 36
15. The method of claim 1814 wherein placing the female connection portion of the shank assembly around the male connection portion of the bit body comprises placing a first separate member of the female connection portion of the shank assembly around the male connection portion of the bit body and placing at least a second separate member of the female connection portion of the shank assembly around another portion of the male connection portion of the bit body and securing the first and the at least a second separate members of the female connection portion of the shank assembly together.
16. The method of claim 12, further comprising orienting at least a portion of the abutting surfaces at an acute angle greater man about the arc-cotangent of a static coefficient of friction exhibited between the abutting surfaces relative to the longitudinal axis of the earth-boring rotary drill bit.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09759317.2A EP2307658B1 (en) | 2008-06-04 | 2009-06-03 | Methods of attaching a shank to a body of an earth boring tool including a load bearing joint and tools formed by such methods |
| US12/919,720 US8746373B2 (en) | 2008-06-04 | 2009-06-03 | Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
| US14/297,329 US9163461B2 (en) | 2008-06-04 | 2014-06-05 | Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/133,288 US7703556B2 (en) | 2008-06-04 | 2008-06-04 | Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
| US12/133,288 | 2008-06-04 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/133,288 Continuation US7703556B2 (en) | 2008-06-04 | 2008-06-04 | Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/919,720 A-371-Of-International US8746373B2 (en) | 2008-06-04 | 2009-06-03 | Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
| US14/297,329 Division US9163461B2 (en) | 2008-06-04 | 2014-06-05 | Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2009149158A2 WO2009149158A2 (en) | 2009-12-10 |
| WO2009149158A3 WO2009149158A3 (en) | 2010-03-11 |
| WO2009149158A4 true WO2009149158A4 (en) | 2010-05-06 |
Family
ID=41398833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2009/046092 WO2009149158A2 (en) | 2008-06-04 | 2009-06-03 | Methods of attaching a shank to a body of an earth boring tool including a load bearing joint and tools formed by such methods |
Country Status (4)
| Country | Link |
|---|---|
| US (3) | US7703556B2 (en) |
| EP (1) | EP2307658B1 (en) |
| RU (1) | RU2010154496A (en) |
| WO (1) | WO2009149158A2 (en) |
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| US7703556B2 (en) | 2008-06-04 | 2010-04-27 | Baker Hughes Incorporated | Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
| WO2010056478A1 (en) | 2008-10-30 | 2010-05-20 | Baker Hughes Incorporated | Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods |
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-
2008
- 2008-06-04 US US12/133,288 patent/US7703556B2/en not_active Expired - Fee Related
-
2009
- 2009-06-03 WO PCT/US2009/046092 patent/WO2009149158A2/en active Application Filing
- 2009-06-03 EP EP09759317.2A patent/EP2307658B1/en not_active Not-in-force
- 2009-06-03 RU RU2010154496/03A patent/RU2010154496A/en unknown
- 2009-06-03 US US12/919,720 patent/US8746373B2/en not_active Expired - Fee Related
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2014
- 2014-06-05 US US14/297,329 patent/US9163461B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP2307658B1 (en) | 2014-10-29 |
| WO2009149158A3 (en) | 2010-03-11 |
| US20110186354A1 (en) | 2011-08-04 |
| US9163461B2 (en) | 2015-10-20 |
| EP2307658A4 (en) | 2013-07-17 |
| US20090301787A1 (en) | 2009-12-10 |
| RU2010154496A (en) | 2012-07-20 |
| EP2307658A2 (en) | 2011-04-13 |
| WO2009149158A2 (en) | 2009-12-10 |
| US20140284113A1 (en) | 2014-09-25 |
| US7703556B2 (en) | 2010-04-27 |
| US8746373B2 (en) | 2014-06-10 |
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