WO2009046075A4 - Drill bits and tools for subterranean drilling - Google Patents

Drill bits and tools for subterranean drilling Download PDF

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Publication number
WO2009046075A4
WO2009046075A4 PCT/US2008/078407 US2008078407W WO2009046075A4 WO 2009046075 A4 WO2009046075 A4 WO 2009046075A4 US 2008078407 W US2008078407 W US 2008078407W WO 2009046075 A4 WO2009046075 A4 WO 2009046075A4
Authority
WO
WIPO (PCT)
Prior art keywords
extension pad
blade
drill bit
extending
pad
Prior art date
Application number
PCT/US2008/078407
Other languages
French (fr)
Other versions
WO2009046075A3 (en
WO2009046075A2 (en
Inventor
Stephen J Ernst
Juan Miguel Bilen
Original Assignee
Baker Hughes Inc
Stephen J Ernst
Juan Miguel Bilen
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 Baker Hughes Inc, Stephen J Ernst, Juan Miguel Bilen filed Critical Baker Hughes Inc
Publication of WO2009046075A2 publication Critical patent/WO2009046075A2/en
Publication of WO2009046075A3 publication Critical patent/WO2009046075A3/en
Publication of WO2009046075A4 publication Critical patent/WO2009046075A4/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
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits

Landscapes

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

Abstract

A drill bit (10) includes at least one extension pad (30) extending rotationally forward backward of an associated blade (24) in a gage region (23) of the bit body. The extension pad includes a circumferential bearing surface (32) that extends the circumferential bearing surface of the associated blade and reduces the chordal drop between any blade havi an extension pad associated therewith and a circumferentially adjacent blade toward which the extension pad protrudes. A drill bit that reduces a chordal drop segment extending across a junk slot is also disclosed.

Claims

AMENDED CLAIMS received by the International Bureau on 1 July 2009What is claimed is:
1. A drill bit (10) characterized in that: a bit body (11) having a longitudinal axis (C/L) and a face (14) extending to a gage region (23) having a gage diameter (31); a plurality of blades (24) extending longitudinally and radially outward over the face
(14), the plurality of blades (24) including at least a first blade (24) and a second blade (24), the second blade (24) rotationally trailing the first blade 924) about the longitudinal axis (C/L); an open fluid course (15) between the first blade (24) and the second blade (24) extending to a junk slot (17) in the gage region (23) of the bit body (11); and an extension pad (22) having an outer diameter thereof substantially the same as the diameter of the gage diameter, the extension pad substantially contiguous with one of the first blade (24) and the second blade (24) in the gage region (23) of the bit body (11), the extension pad (22) extending into at least one of the open fluid course (IS) and the junk slot (17).
2. The drill bit (10) of claim 1, characterized in that each of the plurality of blades (24) includes an extension pad (22) coupled thereto.
3. The drill bit 910) of claim 1 , characterized in that the extension pad (22) extends forward of the second blade (24) in a direction of intended bit rotation.
4. The drill bit (10) of claim I5 characterized in that the extension pad (22) includes a circumferential bearing surface (32).
5. The drill bit (10) of claim 1, characterized in that the extension pad (22), when extending from the first blade (24), further includes a trailing edge (35) as extending into the at least one of the open fluid course (14) and the junk slot (17) from adjacent the first blade (24) or, when extending from the second blade (24), a leading edge (25) extending into the at least one of the open fluid course (14) and the junk slot (17) from adjacent the second blade (24), the respective edge extending one of linearly and non-linearly between an upper extension pad extent and a lower extension pad extent
6. The drill bit (10) of claim 1, further characterized in that at least one additional extension pad (22), wherein one of the at least one additional extension pad (22) is substantially contiguous with the other of the first blade (24) and the second blade (24).
7. The drill bit (10) of claim 6, characterized in that wherein each of the extension pad (22) and the at least one additional extension pad (22) respectively includes at least one of a trailing edge (35) and a leading edge (25) extending non-linearly between an upper extension pad extent and a lower extension pad extent of each respective extension pad (22).
8. The drill bit (10) of claim 4, further characterized in that a plurality of cutting elements (16) coupled to each of the plurality of blades (24), at least some of the plurality' of cutting elements (16) coupled to at least some of the blades (24), are configured, positioned and oriented to provide, in combination, lateral imbalance force upon rotational movement of the bit body (11) about the longitudinal axis under weight on bit when drilling a formation, the lateral imbalance force being generally directed toward the circumferential bearing surface.
9. The drill bit (10) of claim 1, characterized in that the extension pad (22) reduces a chordal drop segment (36) between the at least one blade (24) and an adjacent, rotationally trailing blade (24).
10. The drill bit (10) of claim 1, further characerized in that additional extension pads (22), one of the additional extension pads (22) extending forward from a rotationally leading blade surface of another blade (24) of the plurality of blades (24) and including a leading edge (25).
11. The drill bit (10) of claim 10, characterized in that each of the extension pads (22) provide a reduced chordal drop segment (36) between circumferentially adjacent blades (24).
19
12. The drill bit (10) of claim 7, characterized in that the trailing edge is one of linear and non-linear and extends between an upper extension pad extent and a lower extension pad extent.
13. The drill bit (10) of claim 1, characterized in that the at least one blade (24) includes a gage pad (22) having a circumferential bearing surface (32) in the gage region extended by the circumferential bearing surface of the extension pad (22).
14. The drill bit (10) of claim 1, characterized in that wherein at least one of the plurality of blades 924) being without an extension pad (22) associated therewith.
15. The drill bit (10) of claim 1, characterized in that the extension pad (22) extends both forward and backward of the at least one blade (24) with respect to the direction of intended bit rotation about the longitudinal axis (C/L).
16. The drill bit (10) of claim 1, characterized in that the extension pad (22) further includes at least one of a trailing edge (35) and a leading edge (25) extending in at least one of a linear manner and a non-linear manner between an upper extension pad extent and a lower extension pad extent.
17. The drill bit (10) of claim 16, characterized in that the extension pad (22) includes both a trailing edge (35) and a leading edge (25).
18. The drill bit (10) of claim 16, characterized in that the extension pad (22) includes at least one of a trailing edge (35) and a leading edge (25) extending non- linearly between an upper extension pad extent and a lower extension pad extent.
20
PCT/US2008/078407 2007-10-01 2008-10-01 Drill bits and tools for subterranean drilling WO2009046075A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/865,258 US20090084607A1 (en) 2007-10-01 2007-10-01 Drill bits and tools for subterranean drilling
US11/865,258 2007-10-01

Publications (3)

Publication Number Publication Date
WO2009046075A2 WO2009046075A2 (en) 2009-04-09
WO2009046075A3 WO2009046075A3 (en) 2009-06-18
WO2009046075A4 true WO2009046075A4 (en) 2009-08-20

Family

ID=40506908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/078407 WO2009046075A2 (en) 2007-10-01 2008-10-01 Drill bits and tools for subterranean drilling

Country Status (2)

Country Link
US (1) US20090084607A1 (en)
WO (1) WO2009046075A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8079430B2 (en) * 2009-04-22 2011-12-20 Baker Hughes Incorporated Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of off-center drilling
WO2011038383A2 (en) 2009-09-28 2011-03-31 Bake Hughes Incorporated Earth-boring tools, methods of making earth-boring tools and methods of drilling with earth-boring tools
US10392867B2 (en) * 2017-04-28 2019-08-27 Baker Hughes, A Ge Company, Llc Earth-boring tools utilizing selective placement of shaped inserts, and related methods
US10697248B2 (en) * 2017-10-04 2020-06-30 Baker Hughes, A Ge Company, Llc Earth-boring tools and related methods
US10954721B2 (en) 2018-06-11 2021-03-23 Baker Hughes Holdings Llc Earth-boring tools and related methods

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1333282C (en) * 1989-02-21 1994-11-29 J. Ford Brett Imbalance compensated drill bit
US5042596A (en) * 1989-02-21 1991-08-27 Amoco Corporation Imbalance compensated drill bit
US5010789A (en) * 1989-02-21 1991-04-30 Amoco Corporation Method of making imbalanced compensated drill bit
US4932484A (en) * 1989-04-10 1990-06-12 Amoco Corporation Whirl resistant bit
US4982802A (en) * 1989-11-22 1991-01-08 Amoco Corporation Method for stabilizing a rotary drill string and drill bit
GB8926688D0 (en) * 1989-11-25 1990-01-17 Reed Tool Co Improvements in or relating to rotary drill bits
US5186268A (en) * 1991-10-31 1993-02-16 Camco Drilling Group Ltd. Rotary drill bits
EP0569663A1 (en) * 1992-05-15 1993-11-18 Baker Hughes Incorporated Improved anti-whirl drill bit
US5558170A (en) * 1992-12-23 1996-09-24 Baroid Technology, Inc. Method and apparatus for improving drill bit stability
US5549171A (en) * 1994-08-10 1996-08-27 Smith International, Inc. Drill bit with performance-improving cutting structure
EP0707132B1 (en) * 1994-10-15 2003-08-06 Camco Drilling Group Limited Rotary drill bit
US5996713A (en) * 1995-01-26 1999-12-07 Baker Hughes Incorporated Rolling cutter bit with improved rotational stabilization
US5992548A (en) * 1995-08-15 1999-11-30 Diamond Products International, Inc. Bi-center bit with oppositely disposed cutting surfaces
US5722499A (en) * 1995-08-22 1998-03-03 Smith International, Inc. Multiple diamond layer polycrystalline diamond composite cutters
US5904213A (en) * 1995-10-10 1999-05-18 Camco International (Uk) Limited Rotary drill bits
US6089336A (en) * 1995-10-10 2000-07-18 Camco International (Uk) Limited Rotary drill bits
US5794725A (en) * 1996-04-12 1998-08-18 Baker Hughes Incorporated Drill bits with enhanced hydraulic flow characteristics
GB9708022D0 (en) * 1997-04-21 1997-06-11 Camco Int Uk Ltd Curved blades and gauge
US6321862B1 (en) * 1997-09-08 2001-11-27 Baker Hughes Incorporated Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability
US6230828B1 (en) * 1997-09-08 2001-05-15 Baker Hughes Incorporated Rotary drilling bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics
US5967247A (en) * 1997-09-08 1999-10-19 Baker Hughes Incorporated Steerable rotary drag bit with longitudinally variable gage aggressiveness
GB2339811B (en) * 1998-07-22 2002-05-22 Camco Internat Improvements in or relating to rotary drill bits
US6260636B1 (en) * 1999-01-25 2001-07-17 Baker Hughes Incorporated Rotary-type earth boring drill bit, modular bearing pads therefor and methods
US6834733B1 (en) * 2002-09-04 2004-12-28 Varel International, Ltd. Spiral wave bladed drag bit
GB2438520B (en) * 2006-05-26 2009-01-28 Smith International Drill Bit
US20070278014A1 (en) * 2006-05-30 2007-12-06 Smith International, Inc. Drill bit with plural set and single set blade configuration

Also Published As

Publication number Publication date
WO2009046075A3 (en) 2009-06-18
WO2009046075A2 (en) 2009-04-09
US20090084607A1 (en) 2009-04-02

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