US20060060267A1 - Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing - Google Patents

Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing Download PDF

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Publication number
US20060060267A1
US20060060267A1 US10/943,575 US94357504A US2006060267A1 US 20060060267 A1 US20060060267 A1 US 20060060267A1 US 94357504 A US94357504 A US 94357504A US 2006060267 A1 US2006060267 A1 US 2006060267A1
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US
United States
Prior art keywords
tubing
section
low temperature
metallic tubing
metallic
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US10/943,575
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English (en)
Inventor
Dan Benson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oceaneering International Inc
Original Assignee
Oceaneering International 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 Oceaneering International Inc filed Critical Oceaneering International Inc
Priority to US10/943,575 priority Critical patent/US20060060267A1/en
Priority to BRPI0515458-8A priority patent/BRPI0515458A/pt
Priority to EP05790152A priority patent/EP1799870A2/en
Priority to CA002580462A priority patent/CA2580462A1/en
Priority to JP2007532345A priority patent/JP2008513604A/ja
Priority to MX2007003098A priority patent/MX2007003098A/es
Priority to PCT/US2005/029896 priority patent/WO2006033752A2/en
Publication of US20060060267A1 publication Critical patent/US20060060267A1/en
Assigned to OCEANEERING INTERNATIONAL, INC. reassignment OCEANEERING INTERNATIONAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BENSON, DAN THOMAS
Priority to ZA200703074A priority patent/ZA200703074B/xx
Priority to NO20071959A priority patent/NO20071959L/no
Priority to US11/846,097 priority patent/US20080042327A1/en
Abandoned legal-status Critical Current

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    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/607—Molten salts
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/30—Stress-relieving
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention is directed to a method of extending the life of thin walled tubing by austempering the tubing in a controlled process involving heating, quenching, and cooling the tubing pursuant to predetermined process parameters.
  • the invention is also directed to a process for austempering tubing having a welded seam and for relieving residual stress in the weld.
  • the invention is further directed to the product of the above processes as well as an austempered weld stress relieved thin walled tubing and such tubing in combination with other apparatus with which it is suitable for use in the production of hydrocarbons.
  • tubing is rolled on or off a coil tubing reel, it is permanently elongated.
  • the elongation accumulates until exhausted and the tubing breaks.
  • elongation is a significant property of the tubing material.
  • tubing material The second significant property of tubing material is strength or hardness. This quality resists dialation stesses of pressure and tension stresses of deployments in deep wells.
  • a characteristic of steel is decreasing elongation with increasing hardness.
  • an ideal coil tubing is a paradox: hard for strength in deep or high pressure wells, ductile for repetitive reeling.
  • Austempering of steel is known in the prior art, however it is typically accomplished in a non-continuous batch process which is unsuitable for coil tubing milling.
  • FIG. 1 Represented by FIG. 1 is the current technology to continuously mill steel tubing: metal strip is introduced to a tube formation device, the seam welded and scarfed, and the formed tubular annealed, e.g., by heating.
  • the tubing is chilled by cooling apparatus, and then travels through additional formation devices, e.g., sizing rolls.
  • the tubular may then be heated and cooled again and taken up, e.g., on a reel. By welding the butts of the strip stock at the front end of the process, very long lengths of tubing can be milled.
  • the sizing operation in FIG. 1 work-hardens the tubing increasing the strength.
  • the thermal processes depicted in FIG. 1 are either palliatives for problems caused by welding, or to soften tubing to the desired grade after work-hardening.
  • the thermal processes used in present tubing milling technology do not harden the tube.
  • the present inventions are directed toward an apparatus and methods useful for increasing the strength of the tubing while maintaining the elongation of thin walled tubing by austempering the thin walled tubing.
  • the present invention is further directed toward a method for austempering thin walled tubing comprising a welded seam and for stress relieving the welded seam.
  • the present invention is also directed toward a product produced by the methods and/or processes described above.
  • the present invention is also directed toward a thin walled austempered tubing comprising a stress relieved welded seam.
  • FIG. 1 is a schematic overview of a prior art system.
  • FIGS. 2 and 2 a are schematic overviews of an exemplary apparatus for practicing the present inventions' methods.
  • FIG. 3 is a view in partial perspective of a section of austempered tubing.
  • FIG. 3 is a schematic view of an exemplary deployment of austempered tubing in a well.
  • FIG. 5 is a block diagram of a first method of the present invention.
  • FIG. 6 is a block diagram of a second method of the present invention.
  • FIG. 7 is a block diagram of a third method of the present invention.
  • exemplary apparatus 10 for austempering thin walled tubing comprises heater 20 , low temperature reservoir 30 , and cooler 40 .
  • Apparatus 10 is adapted to be used with continuous runs of tubing 12 while practicing the methods of the present invention.
  • a continuous run is one which processes a length of around 200 feet or more in a single processing procedure.
  • Metallic tubing 12 has a wall thickness of less than 0.25 inches, preferably around 0.120 inches.
  • metallic tubing 12 comprises a steel alloy with a carbon content greater than or equal to 0.25 and less than or equal to 0.45 and may comprise 4130 alloy steel.
  • Metallic tubing 12 may be supplied from source 15 of a substantially continuous supply of metal, e.g. a rolled strip, and formed in to a tubular at tube former 90 . Seams created by tube formation may be welded at seam welder 91 and the formed seam scarfed at scarfer 92 .
  • Heater 20 is adapted to accept a section of metallic tubing 12 and heat the section to a high temperature in the range of 1300-1600° F.
  • Heater 20 may comprise an induction heater and/or a flame or the like, or a combination thereof.
  • Heater 20 e.g. an induction heater, may be located proximate to or within low temperature reservoir 30 .
  • Low temperature reservoir 30 is adapted to accept a moving section of metallic tubing 12 as part of a continuous run process and to reduce the temperature of the section of metallic tubing to a first low temperature in the range of 500-1000° F. in a time period of less than 3 seconds.
  • Low temperature reservoir 30 as used for quenching may comprise a molten salt bath. Moving may be accomplished by numerous equivalent means including by using rollers.
  • Cooler 40 is adapted to cool a section of metallic tubing 12 to a second low temperature below 100° F. Cooling may be accomplished by numerous equivalent means including by forced convection. Additional coolers may be present, e.g. water cooler 93 , as is practiced in the art.
  • austempered metallic tubing 12 may be sized at sizing rollers 94 and cooled further by coolers 96 and 97 .
  • Austempered metallic tubing 12 may then be taken up, e.g. at takeup reel 17 .
  • Austempered thin walled welded tube 12 may be coiled on a reel, e.g., takeup reel 17 , which may be further mounted on ship 16 ( FIG. 2 a ).
  • austempered thin walled welded tube 12 may comprise first end region 12 a adapted to be attached to device 19 , e.g. a motor, an overshoot jar, an intensifier, a landing nipple, a plug catcher, a casing scraper, a snake pin, a downhole tool, a valve, or the like.
  • Austempered thin walled welded tube 12 may further comprise second end region 12 b opposite first end region 12 a which may be adapted to be further connected to device 18 , e.g. a pump.
  • Austempered, thin walled, and stress relieved welded tubing 12 may be produced by any of the exemplary methods described herein.
  • thin walled welded tube 12 produced by any of the exemplary methods described herein may comprise an austempered cylindrical body created as part of the continuous run processes of those methods where the austempered cylindrical body comprises first seam edge 12 c , second seam edge 12 d , and a wall having a thickness of less than 0.25 inches.
  • Thin walled welded tube 12 may further comprise stress relieved welded seam 12 e joining the first and second seam edges.
  • thin walled welded tube 12 is unspooled from takeup reel 17 .
  • One end of thin walled welded tube 12 is connected to pump 18 and the other end deployed through well casing 90 and/or production tubing 91 , terminating in tool 19 .
  • a section of metallic tubing 12 ( FIG. 2 a ) is heated to a high temperature in the range of 1300-1600° F. in heater 20 ( FIG. 2 a ).
  • the section of metallic tubing 12 has a wall thickness of less than 0.25 inches, preferably around 0.120 inches.
  • the section of heated metallic tubing 12 ( FIG. 2 a ) is moved from heater 20 ( FIG. 2 a ) to low temperature reservoir 30 ( FIG. 2 a ) as part of a continuous run process. While in low temperature reservoir 30 , the section of metallic tubing 12 is quenched to reduce the temperature of the section of metallic tubing 12 to a first low temperature in the range of 500-1000° F. in a time period of less than 3 seconds. Processing the section of metallic tubing 12 may comprise a time-temperature-transformation curve where the start of conversion to austentite-ferrite is at least 0.75 seconds after quenching in low temperature reservoir 30 .
  • the section of metallic tubing 12 ( FIG. 2 a ) is allowed to transform to bainite and then moved out of low temperature reservoir 30 ( FIG. 2 a ) as part of the continuous run process and cooled to a second low temperature below around 100° F. Cooling may be by forced convection, e.g. at cooler 40 ( FIG. 2 a ).
  • a further exemplary method for austempering thin walled coiled tubing 12 comprises extending a section of thin walled metallic tubing 12 having a wall thickness of less than 0.25 inches from a coil mounted about reel 15 ( FIG. 2 a ) into heater 20 ( FIG. 2 a ) as part of a continuous run process.
  • the section of metallic tubing 12 is heated to a high temperature in the range of 1300-1600° F. in heater 20 and then moved from heater 20 to low temperature reservoir 30 ( FIG. 2 a ) as part of the continuous run process.
  • low temperature reservoir 30 the section of metallic tubing 12 is quenched in low temperature reservoir 30 to reduce the temperature of the section of metallic tubing 12 to a first low temperature in the range of 500-1000° F. in a time period of less than around 3 seconds.
  • the section of metallic tubing 12 ( FIG. 2 a ) is allowed to transform to bainite and then the section of metallic tubing 12 transformed into bainite is moved out of low temperature reservoir 30 ( FIG. 2 a ) as part of the continuous run process and cooled to a second low temperature below around 100° F., e.g. at cooler 40 ( FIG. 2 a ).
  • the section of metallic tubing may be coiled, e.g. about reel 17 ( FIG. 2 a ).
  • a section of thin walled metallic tubing 12 ( FIG. 2 a ) having a welded seam and a wall thickness of less than 0.25 inches is extended from a coil mounted about reel 15 ( FIG. 2 a ) into heater 20 ( FIG. 2 a ) as part of a continuous run process.
  • the section of metallic tubing 12 is heated to a high temperature in the range of 1300-1600° F. in heater 20 ( FIG. 2 a ) and then moved from heater 20 to low temperature reservoir 30 ( FIG. 2 a ) as part of the continuous run process.
  • low temperature reservoir 30 the section of metallic tubing 12 is quenched to reduce the temperature of the section of metallic tubing 12 to a first low temperature in the range of 500-1000° F. in a time period of less than around 3 seconds.
  • the section of metallic tubing 12 ( FIG. 2 a ) is then allowed to transform to bainite.
  • the section of metallic tubing 12 transformed to bainite is then moved out of low temperature reservoir 30 ( FIG. 2 a ) as part of the continuous run process cooled to a second low temperature below around 100° F., e.g. at cooler 40 ( FIG. 2 a ).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Heat Treatment Of Articles (AREA)
US10/943,575 2004-09-17 2004-09-17 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing Abandoned US20060060267A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US10/943,575 US20060060267A1 (en) 2004-09-17 2004-09-17 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing
MX2007003098A MX2007003098A (es) 2004-09-17 2005-08-22 Metodo para prolongar la vida de tuberia de revestimiento de pared delgada y tuberia de revestimiento de pared delgada liberada de tension por soldadura austemplada.
EP05790152A EP1799870A2 (en) 2004-09-17 2005-08-22 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing
CA002580462A CA2580462A1 (en) 2004-09-17 2005-08-22 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing
JP2007532345A JP2008513604A (ja) 2004-09-17 2005-08-22 薄肉管材料の寿命を伸ばす方法及びオーステンパ処理された応力除去済薄肉管材料
BRPI0515458-8A BRPI0515458A (pt) 2004-09-17 2005-08-22 método para prolongar o tempo de vida útil da tubulação de parede delgada e tubulação de parede delgada isenta de tensão por solda austemperada
PCT/US2005/029896 WO2006033752A2 (en) 2004-09-17 2005-08-22 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing
ZA200703074A ZA200703074B (en) 2004-09-17 2007-04-16 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing
NO20071959A NO20071959L (no) 2004-09-17 2007-04-17 Fremgangsmate for forlengelse av levetiden til tynnveggede ror og austempererte sveisespenningsavlastede tynnveggede ror
US11/846,097 US20080042327A1 (en) 2004-09-17 2007-08-28 System for Extending the Life of Thin Walled Tubing and Austempered Weld Stress Relieved Thin Walled Tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/943,575 US20060060267A1 (en) 2004-09-17 2004-09-17 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/846,097 Division US20080042327A1 (en) 2004-09-17 2007-08-28 System for Extending the Life of Thin Walled Tubing and Austempered Weld Stress Relieved Thin Walled Tubing

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US20060060267A1 true US20060060267A1 (en) 2006-03-23

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US10/943,575 Abandoned US20060060267A1 (en) 2004-09-17 2004-09-17 Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing
US11/846,097 Abandoned US20080042327A1 (en) 2004-09-17 2007-08-28 System for Extending the Life of Thin Walled Tubing and Austempered Weld Stress Relieved Thin Walled Tubing

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US11/846,097 Abandoned US20080042327A1 (en) 2004-09-17 2007-08-28 System for Extending the Life of Thin Walled Tubing and Austempered Weld Stress Relieved Thin Walled Tubing

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US (2) US20060060267A1 (no)
EP (1) EP1799870A2 (no)
JP (1) JP2008513604A (no)
BR (1) BRPI0515458A (no)
CA (1) CA2580462A1 (no)
MX (1) MX2007003098A (no)
NO (1) NO20071959L (no)
WO (1) WO2006033752A2 (no)
ZA (1) ZA200703074B (no)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100422353C (zh) * 2007-06-28 2008-10-01 朱兴发 钢管中频感应加热热处理方法
US20120111581A1 (en) * 2010-11-04 2012-05-10 Schlumberger Technology Corporation Apparatus and method for reducing the residual bending and fatigue in coiled tubing
CN107964637A (zh) * 2017-12-13 2018-04-27 武汉钢铁有限公司 一种ct100级连续管用热轧钢带及生产方法
CN108018488A (zh) * 2017-12-13 2018-05-11 武汉钢铁有限公司 一种ct110级连续管用热轧钢带及生产方法
CN111560510A (zh) * 2020-04-23 2020-08-21 中国重型机械研究院股份公司 一种钢管热处理淬火方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1924099A (en) * 1931-11-20 1933-08-29 United States Steel Corp Thermally hardening steel
US2818075A (en) * 1950-09-05 1957-12-31 Kolene Corp Apparatus for cleaning metal strip continuously
US3163566A (en) * 1960-04-28 1964-12-29 British Iron Steel Research Continuous heat treatment of elongate metal material
US4533405A (en) * 1982-10-07 1985-08-06 Amax Inc. Tubular high strength low alloy steel for oil and gas wells
US4715907A (en) * 1985-07-08 1987-12-29 Tocco, Inc. Method for heat treating ferrous parts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1924099A (en) * 1931-11-20 1933-08-29 United States Steel Corp Thermally hardening steel
US2818075A (en) * 1950-09-05 1957-12-31 Kolene Corp Apparatus for cleaning metal strip continuously
US3163566A (en) * 1960-04-28 1964-12-29 British Iron Steel Research Continuous heat treatment of elongate metal material
US4533405A (en) * 1982-10-07 1985-08-06 Amax Inc. Tubular high strength low alloy steel for oil and gas wells
US4715907A (en) * 1985-07-08 1987-12-29 Tocco, Inc. Method for heat treating ferrous parts

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100422353C (zh) * 2007-06-28 2008-10-01 朱兴发 钢管中频感应加热热处理方法
US20120111581A1 (en) * 2010-11-04 2012-05-10 Schlumberger Technology Corporation Apparatus and method for reducing the residual bending and fatigue in coiled tubing
CN107964637A (zh) * 2017-12-13 2018-04-27 武汉钢铁有限公司 一种ct100级连续管用热轧钢带及生产方法
CN108018488A (zh) * 2017-12-13 2018-05-11 武汉钢铁有限公司 一种ct110级连续管用热轧钢带及生产方法
CN111560510A (zh) * 2020-04-23 2020-08-21 中国重型机械研究院股份公司 一种钢管热处理淬火方法

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Publication number Publication date
WO2006033752A3 (en) 2008-08-21
ZA200703074B (en) 2010-01-27
CA2580462A1 (en) 2006-03-30
EP1799870A2 (en) 2007-06-27
WO2006033752A2 (en) 2006-03-30
NO20071959L (no) 2007-04-17
MX2007003098A (es) 2007-05-16
BRPI0515458A (pt) 2008-07-22
US20080042327A1 (en) 2008-02-21
JP2008513604A (ja) 2008-05-01

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Owner name: OCEANEERING INTERNATIONAL, INC., TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BENSON, DAN THOMAS;REEL/FRAME:019041/0469

Effective date: 20040916

STCB Information on status: application discontinuation

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