US Patent No: 7,569,286
Number of patents in Portfolio can not be more than 2000
Hardfacing alloy, methods and products
Stats
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Aug 4, 2009
Issued date -
Mar 10, 2008
filing date -
12/075,386
serial no -
In Force
status
Importance
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Abstract
Disclosed is a hardfacing alloy capable of withstanding service abrasion of the order of silicious earth particles and weldable on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfacing alloy has a low coefficient of friction resulting from excellent metal to metal resistance and significant reduction in industrial wear on industrial products, such as casing wear. Other embodiments of the invention include tool joints having the hardbanding alloy welded to the outer cylindrical surface to its box and pin members and to stabilizer ribs on the stabilizer used in earth boring, such as boring for oil and gas, other industrial products, and methods of applying the hardfacing alloy to their surfaces. The hardfacing alloy does not require any post weld treatment, has primary borides in its microstructure, the carbons in the alloy are tied up in the formation of secondary carbides which add to the abrasion resistance, and have a quadratic crystallographic structure and a hardness of about 1725 Hv comparable to the prior art hardness of the chromium carbide primary carbide alloys of the prior art but is substantially less brittle than C—Cr—Fe hardfacing alloys.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 7,082,997 Pipe centralizer and method of attachment | 20 | 2002 | |
| 7,124,825 Casing wear band and method of attachment | 14 | 2002 | |
| 6,679,335 Method for preparing casing for use in a wellbore | 9 | 2002 | |
| 7,219,727 Wear resistant tubular connection | 4 | 2002 | |
| 7,013,992 Borehole stabilization while drilling | 18 | 2003 | |
| 7,472,763 Wear resistant tubular connection | 1 | 2006 | |
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| 5,826,651 Wellbore single trip milling | 75 | 1996 | |
| 5,887,655 Wellbore milling and drilling | 121 | 1997 | |
| 6,158,531 One pass drilling and completion of wellbores with drill bit attached to drill string to make cased wellbores to produce hydrocarbons | 78 | 1999 | |
| 6,557,654 Drill pipe having a journal formed thereon | 4 | 2000 | |
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| 5,224,559 Hardfaced drilling tool joints | 2 | 1991 | |
| 5,569,395 Deep coat faced plate and method | 3 | 1994 | |
| 6,375,895 Hardfacing alloy, methods, and products | 19 | 2000 | |
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| 4,493,963 Mandrel machine | 3 | 1982 | |
| 4,613,741 Feeder for welds | 3 | 1984 | |
| 4,723,060 Feeder equalizer and homogenizer | 3 | 1986 | |
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| 4,753,300 Hydraulic top drive for wells | 36 | 1987 | |
| 4,813,493 Hydraulic top drive for wells | 126 | 1987 | |
| 5,350,560 Wear resistant alloy | 5 | 1993 | |
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| 4,844,179 Drill string stabilizer | 4 | 1987 | |
| 5,343,967 Apparatus for optional straight or directional drilling underground formations | 10 | 1992 | |
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| 5,824,992 Metal-core weld wire with reduced core fill percentage | 16 | 1996 | |
| 5,857,141 Metal-core weld wire for welding galvanized steels | 13 | 1996 | |
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| 6,117,493 Bearing with improved wear resistance and method for making same | 7 | 1998 | |
| 6,582,126 Bearing surface with improved wear resistance and method for making same | 4 | 2001 | |
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| 7,487,840 Wear resistant layer for downhole well equipment | 6 | 2005 | |
| 2006/0102,354 Wear resistant layer for downhole well equipment | 3 | 2005 | |
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| 2007/0209,839 System and method for reducing wear in drill pipe sections | 4 | 2007 | |
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| 2008/0241,584 Hardfacing alloy, methods and products | 1 | 2008 | |
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| 6,888,088 Hardfacing materials & methods | 3 | 2002 | |
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| 6,680,129 Steel composition | 7 | 2002 | |
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| 2006/0207,801 Technique for drilling straight bore holes in the earth | 7 | 2005 | |
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| 6,516,880 System, method and apparatus for deploying a data resource within a threaded pipe coupling | 13 | 2000 | |
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| 7,361,411 Hardfacing alloy, methods, and products | 6 | 2003 | |
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| 4,245,709 Removable drill string stabilizers | 22 | 1979 | |
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| 5,458,097 Light weight valve lifter | 5 | 1994 | |
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| 6,062,326 Casing shoe with cutting means | 91 | 1998 | |
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| 4,665,996 Method for reducing friction in drilling operations | 16 | 1986 | |
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| 4,277,108 Hard surfacing for oil well tools | 13 | 1980 | |
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| 5,857,531 Bottom hole assembly for directional drilling | 25 | 1997 | |
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| 5,824,922 Wear-resistant sintered alloy, and its production method | 10 | 1997 | |
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| 4,444,147 Coating apparatus | 6 | 1981 | |
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| 2002/0054,972 Hardbanding material and process | 2 | 2001 | |
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| 5,066,546 Wear-resistant steel castings | 12 | 1989 | |
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| 5,749,605 Electrically insulative threaded connection | 23 | 1996 | |
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| 5,244,559 Apparatus for transport and heat treatment of substrates | 9 | 1992 | |
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| 5,403,410 Abrasion-resistant steel | 6 | 1993 | |
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| 5,040,622 Variable depth grooved drill string member | 15 | 1990 | |
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| 4,799,544 Drill pipes and casings utilizing multi-conduit tubulars | 72 | 1987 | |
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| 4,708,203 Composite drill collar | 14 | 1986 | |
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| 4,915,426 Pipe coupling for well casing | 118 | 1989 | |
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| 4,533,563 Coating method | 7 | 1984 | |
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| 4,237,362 Method of producing hardfaced plate | 5 | 1978 | |
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| 5,740,872 Hardfacing material for rolling cutter drill bits | 15 | 1996 | |
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| 4,431,902 Portable hardbander | 9 | 1981 | |
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| 4,256,518 Welding and austenitizing earth boring apparatus | 8 | 1979 | |
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| 7,028,788 Wear sleeve | 5 | 2002 | |
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| 6,817,633 Tubular members and threaded connections for casing drilling and method | 56 | 2002 | |
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| 4,586,957 Iron-base alloy materials having excellent workability | 7 | 1984 | |
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| 4,942,059 Method for hardfacing metal articles | 10 | 1988 | |
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| 5,377,410 Cutter for strand-encircling sheaths | 6 | 1993 | |
| 5,826,921 Threaded pipe joint | 17 | 1996 | |
| 6,326,582 Bearing with improved wear resistance and method for making same | 4 | 2000 | |
| 6,761,777 High chromium nitrogen bearing castable alloy | 6 | 2002 | |
| 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM | 2009 | ||
Patent Citation Ranking
Maintenance Fees
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