WO2009132179A4 - Methods, systems, and bottom hole assemblies including reamer with varying effective back rake - Google Patents

Methods, systems, and bottom hole assemblies including reamer with varying effective back rake Download PDF

Info

Publication number
WO2009132179A4
WO2009132179A4 PCT/US2009/041526 US2009041526W WO2009132179A4 WO 2009132179 A4 WO2009132179 A4 WO 2009132179A4 US 2009041526 W US2009041526 W US 2009041526W WO 2009132179 A4 WO2009132179 A4 WO 2009132179A4
Authority
WO
WIPO (PCT)
Prior art keywords
rake angle
back rake
effective back
average effective
bit
Prior art date
Application number
PCT/US2009/041526
Other languages
French (fr)
Other versions
WO2009132179A2 (en
WO2009132179A3 (en
Inventor
Matthias Meister
Original Assignee
Baker Hughes Incorporated
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 Incorporated filed Critical Baker Hughes Incorporated
Priority to PL09733707T priority Critical patent/PL2297424T3/en
Priority to EP09733707.5A priority patent/EP2297424B1/en
Priority to BRPI0911638-9A priority patent/BRPI0911638B1/en
Priority to MX2010011514A priority patent/MX2010011514A/en
Publication of WO2009132179A2 publication Critical patent/WO2009132179A2/en
Publication of WO2009132179A3 publication Critical patent/WO2009132179A3/en
Publication of WO2009132179A4 publication Critical patent/WO2009132179A4/en

Links

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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools

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)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)

Abstract

Reamer bits have cutters with different effective back rake angles. Drilling systems include a pilot bit and a reamer bit, wherein cutters in shoulder regions of the reamer bit have a greater average effective back rake angle than cutters in shoulder regions of the pilot bit. Methods of drilling wellbores include drilling a bore with a pilot bit, and reaming the bore with a reamer bit having cutters in shoulder regions of the reamer bit that have an average effective back rake angle greater than that of cutters in shoulder regions of the pilot bit. Methods of forming drilling systems include attaching pilot and reamer bits to a drill string, and positioning cutters in shoulder regions of the reamer bit to have an average effective back rake angle greater than that of cutters in shoulder regions of the pilot bit.

Claims

AMENDED CLAIMS received by the International Bureau on 12 March 2010 (12.03.2010)
1. A reamer bit comprising: a generally tubular body extending between a first end and a second end, the generally tubular body configured for attachment to a drill string; and a plurality of cutting elements carried by the generally tubular body between the first end and the second end thereof, the cutting elements defining a cutting profile of the reamer bit removed from a longitudinal axis of the reamer bit, at least one cutting element of the plurality of cutting elements having a side rake angle of five degrees (5°) or more; wherein the cutting profile of the reamer bit includes a lower shoulder region and an upper shoulder region, cutting elements in the lower shoulder region having a first average effective back rake angle that is greater than a second average effective back rake angle of cutting elements in the upper shoulder region.
2. The reamer bit in claim 1, wherein at least one cutting element of the plurality of cutting elements having an effective back rake angle of fifteen degrees (15°) or more.
3. The reamer bit of claim 1 , wherein cutting elements in the lower shoulder region have a first average side rake angle that is greater than a second average side rake angle of cutting elements in the upper shoulder region.
4. The reamer bit of claim 3, wherein the first average side range angle is greater than fifteen degrees (15°), and the second average side rake angle is less than ten degrees (10°).
5. The reamer bit of claim 1 , wherein the first average effective back rake angle is at least one and one-half (1.5) times the second average effective back rake angle.
6. The reamer bit of claim 5, wherein the first average effective back rake angle is greater than twenty degrees (20°), and the second average effective back rake angle is less than fifteen degrees (15°).
7. The reamer bit of claim 5, wherein the first average effective back rake angle is at least two (2) times the second average effective back rake angle.
8. The reamer bit of claim 7, wherein the first average effective back rake angle is greater than twenty degrees (20°), and the second average effective back rake angle is less than ten degrees (10°).
9. The reamer bit of claim 1 , wherein the cutting elements are affixed to one or more blades.
10. A drilling system comprising: a pilot bit comprising a first plurality of cutting elements defining a first cutting profile of the pilot bit, the cutting elements of the first plurality in shoulder regions of the first cutting profile of the pilot bit having a first average effective back rake angle; and a reamer bit as recited in any one of claim 1 through 9, Ihe reamer bit comprising a second plurality of cutting elements defining a second cutting profile of me reamer bit, the cutting elements of the second plurality in shoulder regions of the second cutting profile of the reamer bit having a second average effective back rake angle that is greater than the first average effective back rake angle.
11. The drilling system of claim 10, wherein the second average effective back rake angle is at least one and one-half (1.5) times the first average effective back rake angle.
12. The drilling system of claim 11, wherein the second average effective back rake is at least fifteen degrees (15°) or more, and the first average effective back rake angle is less than ten degrees (10°).
13. The drilling system of claim 11 , wherein the second average effective • back rake angle is at least two (2) times the first average effective back rake angle.
14. A method comprising: forming a pilot bit a first plurality of cutting elements in shoulder regions of a cutting profile of the pilot bit; positioning the cutting elements of the first plurality on the pilot bit to have a first average effective back rake angle; forming a reamer bit having a second plurality of cutting elements in shoulder regions of a cutting profile of the reamer bit; positioning the cutting elements of the second plurality on the reamer bit to have a second average effective back rake angle greater than me first average effective back rake angle; and securing the pilot bit and the reamer bit to a common drill string.
15. The method of claim 14, further comprising securing the cutting elements of the second plurality to the reamer bit in orientations causing the second average effective back rake angle to be greater than one and one-half (1.5) times the first average effective back rake angle.
16. The method of claim 14 or claim 15, further comprising: drilling a pilot bore using the pilot bit; and reaming the pilot bore with the reamer bit while drilling the pilot bore using the pilot bit
PCT/US2009/041526 2008-04-23 2009-04-23 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake WO2009132179A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL09733707T PL2297424T3 (en) 2008-04-23 2009-04-23 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake
EP09733707.5A EP2297424B1 (en) 2008-04-23 2009-04-23 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake
BRPI0911638-9A BRPI0911638B1 (en) 2008-04-23 2009-04-23 BACKGROUND METHODS, SYSTEMS AND COMPOSITIONS INCLUDING A REMOVER WITH EFFECTIVE REAR OUTPUTS
MX2010011514A MX2010011514A (en) 2008-04-23 2009-04-23 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4735508P 2008-04-23 2008-04-23
US61/047,355 2008-04-23

Publications (3)

Publication Number Publication Date
WO2009132179A2 WO2009132179A2 (en) 2009-10-29
WO2009132179A3 WO2009132179A3 (en) 2010-03-11
WO2009132179A4 true WO2009132179A4 (en) 2010-04-29

Family

ID=41213883

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/041526 WO2009132179A2 (en) 2008-04-23 2009-04-23 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake

Country Status (6)

Country Link
US (1) US8074741B2 (en)
EP (1) EP2297424B1 (en)
BR (1) BRPI0911638B1 (en)
MX (1) MX2010011514A (en)
PL (1) PL2297424T3 (en)
WO (1) WO2009132179A2 (en)

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US7036611B2 (en) 2002-07-30 2006-05-02 Baker Hughes Incorporated Expandable reamer apparatus for enlarging boreholes while drilling and methods of use
US8056649B2 (en) * 2007-08-30 2011-11-15 Baker Hughes Incorporated Apparatus and methods for drilling wellbores that utilize a detachable reamer
WO2009132179A2 (en) * 2008-04-23 2009-10-29 Baker Hughes Incorporated Methods, systems, and bottom hole assemblies including reamer with varying effective back rake
GB2460096B (en) * 2008-06-27 2010-04-07 Wajid Rasheed Expansion and calliper tool
US9388635B2 (en) * 2008-11-04 2016-07-12 Halliburton Energy Services, Inc. Method and apparatus for controlling an orientable connection in a drilling assembly
US8584776B2 (en) * 2009-01-30 2013-11-19 Baker Hughes Incorporated Methods, systems, and tool assemblies for distributing weight between an earth-boring rotary drill bit and a reamer device
US8550188B2 (en) 2010-09-29 2013-10-08 Smith International, Inc. Downhole reamer asymmetric cutting structures
US9493991B2 (en) 2012-04-02 2016-11-15 Baker Hughes Incorporated Cutting structures, tools for use in subterranean boreholes including cutting structures and related methods
CN103388453B (en) * 2012-05-10 2015-11-18 中国石油天然气集团公司 Control two rotating speed method and the device of reaming-while-drillibit bit pressure distribution relation
CA2889357C (en) * 2012-11-20 2017-08-29 Exxonmobil Upstream Research Company Drill string stabilizer recovery improvement features
MX369559B (en) * 2012-12-03 2019-11-12 Ulterra Drilling Tech Lp Earth boring tool with improved arrangment of cutter side rakes.
EP2971436A1 (en) * 2013-03-11 2016-01-20 BP Corporation North America Inc. Digital underreamer
US20150144405A1 (en) * 2013-11-25 2015-05-28 Smith International, Inc. Cutter block for a downhole underreamer
US10502000B2 (en) 2014-11-05 2019-12-10 Duane Shotwell Reamer cutting insert for use in drilling operations
US20160123088A1 (en) * 2014-11-05 2016-05-05 Duane Shotwell Reamer for Use in Drilling Operations
US11208847B2 (en) 2017-05-05 2021-12-28 Schlumberger Technology Corporation Stepped downhole tools and methods of use
US10837237B2 (en) 2017-11-30 2020-11-17 Duane Shotwell Roller reamer with labyrinth seal assembly
US11480016B2 (en) 2018-11-12 2022-10-25 Ulterra Drilling Technologies, L.P. Drill bit

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Also Published As

Publication number Publication date
BRPI0911638B1 (en) 2019-03-26
WO2009132179A2 (en) 2009-10-29
EP2297424A2 (en) 2011-03-23
US8074741B2 (en) 2011-12-13
EP2297424B1 (en) 2014-12-24
US20090266614A1 (en) 2009-10-29
WO2009132179A3 (en) 2010-03-11
EP2297424A4 (en) 2013-09-04
PL2297424T3 (en) 2015-06-30
MX2010011514A (en) 2011-01-20
BRPI0911638A2 (en) 2018-03-27

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