WO2009006511A4 - Earth boring drill bits made from a low-carbon, high-molybdenum alloy - Google Patents

Earth boring drill bits made from a low-carbon, high-molybdenum alloy Download PDF

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Publication number
WO2009006511A4
WO2009006511A4 PCT/US2008/068986 US2008068986W WO2009006511A4 WO 2009006511 A4 WO2009006511 A4 WO 2009006511A4 US 2008068986 W US2008068986 W US 2008068986W WO 2009006511 A4 WO2009006511 A4 WO 2009006511A4
Authority
WO
WIPO (PCT)
Prior art keywords
weight
alloy
amount
earth boring
bit
Prior art date
Application number
PCT/US2008/068986
Other languages
French (fr)
Other versions
WO2009006511A3 (en
WO2009006511A2 (en
Inventor
Carmel Z. El Hakam
Eric C. Sullivan
John F. Bradford Iii
Don Q. Nguyen
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 EP08772347.4A priority Critical patent/EP2167696B1/en
Priority to PL08772347T priority patent/PL2167696T3/en
Publication of WO2009006511A2 publication Critical patent/WO2009006511A2/en
Publication of WO2009006511A3 publication Critical patent/WO2009006511A3/en
Publication of WO2009006511A4 publication Critical patent/WO2009006511A4/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Abstract

An earth boring bit formed from an alloy comprising a low carbon content and high molybdenum content is disclosed herein. The molybdenum content is greater than about 0.8% to about 1.15% by weight of the alloy. The carbon content may range up to about 0.16% by weight of the alloy. The alloy may further comprise alloy further comprises manganese, phosphorus, sulfur, silicon, nickel, chromium, copper, aluminum, vanadium, and calcium; with the balance being iron. The alloy experiences a relatively flattened hardenability curve and low martinsite formation.

Claims

AMENDED CLAIMS received by the International Bureau on 28 July 2009 (28.07.2009)
1. A device for use in earth boring operations comprising:
an earth boring bit having at least a portion thereof formed from a steel alloy comprising, molybdenum in a weight percent of the alloy from about 0.9% to about 1.1%, carbon in a weight percent of the alloy of from about 0.1 to about 0-15%, and calcium in a weight percent of the alloy up to about 0.003%.
2. The device of claim 1, wherein the alloy comprises molybdenum in an amount of from about 0.82% to about 1.15% by weight.
3. The device of claim I, wherein the alloy comprises molybdenum in an amount of from about 0.85% to about 1.12% by weight.
4. The device of claim 1, wherein the alloy comprises molybdenum in an amount of from about 0.9% to about 1.1% by weight
5. The device of claim 1 wherein the alloy comprises carbon in an amount of from about 0.01% to about 0.15% by weight.
6. The device of claim 1 wherein the alloy further comprises manganese, phosphorus, sulfur, silicon, nickel, chromium, copper, aluminum, vanadium, and iron.
7. The device of claim 6, wherein the alloy comprises manganese in an amount of about 0.70% to about 1.00% by weight, phosphorus having a content up to about 0.035% by weight, sulfur having a content up to about 0.005% by weight, silicon ranging from about 0.15% to about 0.35% by weight, nickel ranging from about 1.65% to about 2% by weight, chromium ranging from about 0.45% to about 0.65% by weight, copper having a content of up to about 0.35% by weight, aluminum ranging from about 0.02% to about 0.45% by weight, and vanadium ranging up to about 0.01% by weight.
8. The device of claim 7, wherein the balance of the alloy comprises iron.
9. The device of claim 1, the earth boring bit comprising, a body having a bit leg; a cone rotatably mounted to the bit leg, a drill string connection, and teeth formed on the cone, wherein at least one of the body, the bit leg; the cone, the drill string connection, or teeth comprise the alloy.
10. The device of claim 1 , wherein the bit body comprises the steel al loy .
11. An earth boring bit comprising:
a body having a bit leg;
a cone rotatably mounted to the bit leg; and
teeth formed on the cone, wherein at least one of the body, the bit leg; the cone, or teeth include a steel alloy comprising, molybdenum in a weight percent of the alloy greater than about 0.9%, carbon in a weight percent of the alloy up to about 0.15%, and calcium in a weight percent of the alloy up to about 0.003%.
12. The earth boring bit of claim 11, wherein the alloy comprises molybdenum in an amount of from about 0.82% to about 1.15% by weight.
13. The earth boring bit of claim 11, wherein me alloy comprises molybdenum in an amount of from about 0.85% to about 1.12% by weight
14. The earth boring bit of claim 11, wherein the alloy comprises molybdenum in an amount of from about 0.9% to about 1.1% by weight.
15. The earth boring bit of claim I I, wherein the alloy comprises carbon in an amount of from about 0.01% to about 0.15% by weight.
16. The earth boring bit of claim 11, wherein the alloy further comprises manganese, phosphorus, sulfur, silicon, nickel, chromium, copper, aluminum, vanadium, and iron.
17. The earth boring bit of claim 16, wherein the alloy comprises manganese in an amount of about 0.70% to about 1.00% by weight, phosphorus in an amount up to about 0.035% by weight, sulfur in an amount up to about 0,005% by weight, silicon in an amount ranging from about 0.15% to about 0.35% by weight, nickel in an amount ranging from about 1.65% to about 2% by weight, chromium in an amount ranging from about 0.45% to about 0.65% by weight, copper in an amount of up to about 0.35% by weight, aluminum in an amount ranging from about 0.02% to about 0.45% by weight, and vanadium in an amount ranging up to about 0.01% by weight
18. The earth boring bit of claim 11, included with a drilling system and disposed on a lower end of a drill string, where the drill string is driven by a top drive.
] 9. A method of making an earth boring device comprising:
forming an earth boring bit wherein at least a portion of the bit is made from an alloy comprising molybdenum in a weight percent of the alloy from about 0.9% to about 1.1%, carbon in a weight percent of the alloy from about 0.1% up to about 0.15%, and calcium in a weight percent of the alloy up to about 0.003%.
20. The method of claim 19, wherein the alloy comprises molybdenum in an amount of from about 0.82% to about 1.15% by weight
21. The method of claim 19, wherein the alloy farther comprises manganese, phosphorus, sulfur, silicon, nickel, chromium, copper, aluminum, vanadium, and iron.
PCT/US2008/068986 2007-07-02 2008-07-02 Earth boring drill bits made from a low-carbon, high-molybdenum alloy WO2009006511A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08772347.4A EP2167696B1 (en) 2007-07-02 2008-07-02 Earth boring drill bits made from a low-carbon, high-molybdenum alloy
PL08772347T PL2167696T3 (en) 2007-07-02 2008-07-02 Earth boring drill bits made from a low-carbon, high-molybdenum alloy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94757007P 2007-07-02 2007-07-02
US60/947,570 2007-07-02

Publications (3)

Publication Number Publication Date
WO2009006511A2 WO2009006511A2 (en) 2009-01-08
WO2009006511A3 WO2009006511A3 (en) 2009-07-09
WO2009006511A4 true WO2009006511A4 (en) 2009-09-11

Family

ID=39942810

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/068986 WO2009006511A2 (en) 2007-07-02 2008-07-02 Earth boring drill bits made from a low-carbon, high-molybdenum alloy

Country Status (4)

Country Link
US (1) US7905301B2 (en)
EP (1) EP2167696B1 (en)
PL (1) PL2167696T3 (en)
WO (1) WO2009006511A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7472764B2 (en) * 2005-03-25 2009-01-06 Baker Hughes Incorporated Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture
US8991471B2 (en) 2011-12-08 2015-03-31 Baker Hughes Incorporated Methods of forming earth-boring tools
US9695875B2 (en) 2013-07-17 2017-07-04 Roller Bearing Company Of America, Inc. Top drive bearing for use in a top drive system, and made of non-vacuum arc remelted steel configured to achieve an extended life cycle at least equivalent to a life factor of three for a vacuum arc remelted steel
US11732531B2 (en) * 2021-06-04 2023-08-22 Baker Hughes Oilfield Operations Llc Modular earth boring tools having fixed blades and removable blade assemblies and related methods
CN114807748A (en) * 2022-03-28 2022-07-29 本钢板材股份有限公司 Steel for high-strength roller bit and preparation method thereof

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Also Published As

Publication number Publication date
WO2009006511A3 (en) 2009-07-09
EP2167696B1 (en) 2013-10-23
EP2167696A2 (en) 2010-03-31
PL2167696T3 (en) 2014-03-31
US7905301B2 (en) 2011-03-15
WO2009006511A2 (en) 2009-01-08
US20090008154A1 (en) 2009-01-08

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