WO2011088477A3 - Drill bit bearing contact pressure reduction - Google Patents

Drill bit bearing contact pressure reduction Download PDF

Info

Publication number
WO2011088477A3
WO2011088477A3 PCT/US2011/025427 US2011025427W WO2011088477A3 WO 2011088477 A3 WO2011088477 A3 WO 2011088477A3 US 2011025427 W US2011025427 W US 2011025427W WO 2011088477 A3 WO2011088477 A3 WO 2011088477A3
Authority
WO
WIPO (PCT)
Prior art keywords
contact pressure
drill bit
pressure reduction
bearing contact
bearing surfaces
Prior art date
Application number
PCT/US2011/025427
Other languages
French (fr)
Other versions
WO2011088477A2 (en
Inventor
Ping C. Sui
Gary E. Weaver
Original Assignee
Halliburton Energy Services, Inc.
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 Halliburton Energy Services, Inc. filed Critical Halliburton Energy Services, Inc.
Priority to EP11733546A priority Critical patent/EP2524103A2/en
Priority to AU2011205611A priority patent/AU2011205611B2/en
Priority to CA2787038A priority patent/CA2787038A1/en
Publication of WO2011088477A2 publication Critical patent/WO2011088477A2/en
Publication of WO2011088477A3 publication Critical patent/WO2011088477A3/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
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details

Abstract

A method of reducing contact pressure between bearing surfaces of a drill bit can include constructing a structure which supports one bearing surface in contact with the other bearing surface, and reducing contact pressure between the bearing surfaces by relieving strain energy in the structure. A drill bit can include one bearing surface which contacts another bearing surface. There is a transition between contact and lack of contact between the bearing surfaces. A structure supporting one of the bearing surfaces has a reduced stiffness, whereby a contact pressure between the bearing surfaces is reduced at the transition.
PCT/US2011/025427 2010-01-12 2011-02-18 Drill bit bearing contact pressure reduction WO2011088477A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11733546A EP2524103A2 (en) 2010-01-12 2011-02-18 Drill bit bearing contact pressure reduction
AU2011205611A AU2011205611B2 (en) 2010-01-12 2011-02-18 Drill bit bearing contact pressure reduction
CA2787038A CA2787038A1 (en) 2011-02-18 2011-02-18 Drill bit bearing contact pressure reduction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/685,807 US20110168450A1 (en) 2010-01-12 2010-01-12 Drill bit bearing contact pressure reduction
US12/685,807 2010-01-12

Publications (2)

Publication Number Publication Date
WO2011088477A2 WO2011088477A2 (en) 2011-07-21
WO2011088477A3 true WO2011088477A3 (en) 2011-10-20

Family

ID=44257641

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/025427 WO2011088477A2 (en) 2010-01-12 2011-02-18 Drill bit bearing contact pressure reduction

Country Status (5)

Country Link
US (1) US20110168450A1 (en)
EP (1) EP2524103A2 (en)
AU (1) AU2011205611B2 (en)
CA (1) CA2842758A1 (en)
WO (1) WO2011088477A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8459379B2 (en) * 2010-01-12 2013-06-11 Halliburton Energy Services, Inc. Bearing contact pressure reduction in well tools
BR112016002318A2 (en) * 2013-08-30 2017-08-01 Halliburton Energy Services Inc Drill bit, method for drilling underground and high temperature lubricant
US9528066B2 (en) * 2013-08-30 2016-12-27 Halliburton Energy Services, Inc. High-temperature lubricants comprising elongated carbon nanoparticles for use in subterranean formation operations

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265964A (en) * 1990-03-02 1993-11-30 Smith International, Inc. Lubricant system for a rotary cone rock bit
US5307887A (en) * 1992-07-30 1994-05-03 Baker Hughes Incorporated Earth boring bit with improved thrust bearing
US5678829A (en) * 1996-06-07 1997-10-21 Kalsi Engineering, Inc. Hydrodynamically lubricated rotary shaft seal with environmental side groove
US20090194945A1 (en) * 2008-02-04 2009-08-06 Welldynamics, Inc. Energized composite metal to metal seal

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866987A (en) * 1974-01-14 1975-02-18 Smith International Drill bit with laminated friction bearing
US4580794A (en) * 1984-11-16 1986-04-08 Jamak, Inc. Silicon rubber gasket and material
DE3709838C1 (en) * 1987-03-25 1988-09-29 Eastman Christensen Co Chisel direct drive for deep drilling tools
US5125754A (en) * 1987-05-29 1992-06-30 Ide Russell D Multi-deflection pad hydrodynamic thrust and journal bearings having a modular construction
CA2024061C (en) * 1990-08-27 2001-10-02 Laurier Emile Comeau System for drilling deviated boreholes
US5174738A (en) * 1991-12-11 1992-12-29 Carrier Corporation Slider block for a scroll compressor having edge loading relief under load
US5472058A (en) * 1994-04-20 1995-12-05 Smith International, Inc. Rock bit with mechanical seal
GB9411228D0 (en) * 1994-06-04 1994-07-27 Camco Drilling Group Ltd A modulated bias unit for rotary drilling
GB9513252D0 (en) * 1995-06-29 1995-09-06 Rolls Royce Plc An abradable composition
EP0919691B1 (en) * 1997-11-25 2004-01-28 Camco International (UK) Ltd. Face seal having strain induced face geometry
US6095262A (en) * 1998-08-31 2000-08-01 Halliburton Energy Services, Inc. Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation
US6213225B1 (en) * 1998-08-31 2001-04-10 Halliburton Energy Services, Inc. Force-balanced roller-cone bits, systems, drilling methods, and design methods
US6412577B1 (en) * 1998-08-31 2002-07-02 Halliburton Energy Services Inc. Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation
US6401839B1 (en) * 1998-08-31 2002-06-11 Halliburton Energy Services, Inc. Roller cone bits, methods, and systems with anti-tracking variation in tooth orientation
US6269892B1 (en) * 1998-12-21 2001-08-07 Dresser Industries, Inc. Steerable drilling system and method
BE1012545A3 (en) * 1999-03-09 2000-12-05 Security Dbs Widener borehole.
US6460635B1 (en) * 1999-10-25 2002-10-08 Kalsi Engineering, Inc. Load responsive hydrodynamic bearing
DE19955764A1 (en) * 1999-11-19 2001-05-31 Hilti Ag Gap sealing method and device
US6863124B2 (en) * 2001-12-21 2005-03-08 Schlumberger Technology Corporation Sealed ESP motor system
US7434632B2 (en) * 2004-03-02 2008-10-14 Halliburton Energy Services, Inc. Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals
CN1965145B (en) * 2004-06-09 2010-05-05 霍利贝顿能源服务股份有限公司 Enlarging and stabilising tool for a borehole
US20060065445A1 (en) * 2004-09-28 2006-03-30 Smith International, Inc. Rock-bit seals with asymmetric contact profiles
US20060171616A1 (en) * 2005-02-03 2006-08-03 Kalsi Engineering, Inc. Hydrodynamic thrust bearing assembly
US7703982B2 (en) * 2005-08-26 2010-04-27 Us Synthetic Corporation Bearing apparatuses, systems including same, and related methods
US7387177B2 (en) * 2006-10-18 2008-06-17 Baker Hughes Incorporated Bearing insert sleeve for roller cone bit
US7870913B1 (en) * 2007-07-18 2011-01-18 Us Synthetic Corporation Bearing assemblies, and bearing apparatuses and motor assemblies using same
US20090038858A1 (en) * 2007-08-06 2009-02-12 Smith International, Inc. Use of nanosized particulates and fibers in elastomer seals for improved performance metrics for roller cone bits
US8459379B2 (en) * 2010-01-12 2013-06-11 Halliburton Energy Services, Inc. Bearing contact pressure reduction in well tools

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265964A (en) * 1990-03-02 1993-11-30 Smith International, Inc. Lubricant system for a rotary cone rock bit
US5307887A (en) * 1992-07-30 1994-05-03 Baker Hughes Incorporated Earth boring bit with improved thrust bearing
US5678829A (en) * 1996-06-07 1997-10-21 Kalsi Engineering, Inc. Hydrodynamically lubricated rotary shaft seal with environmental side groove
US20090194945A1 (en) * 2008-02-04 2009-08-06 Welldynamics, Inc. Energized composite metal to metal seal

Also Published As

Publication number Publication date
CA2842758A1 (en) 2011-07-21
WO2011088477A2 (en) 2011-07-21
US20110168450A1 (en) 2011-07-14
AU2011205611B2 (en) 2014-10-09
EP2524103A2 (en) 2012-11-21
AU2011205611A1 (en) 2012-06-21

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