WO2006033752A2 - 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 PDFInfo
- Publication number
- WO2006033752A2 WO2006033752A2 PCT/US2005/029896 US2005029896W WO2006033752A2 WO 2006033752 A2 WO2006033752 A2 WO 2006033752A2 US 2005029896 W US2005029896 W US 2005029896W WO 2006033752 A2 WO2006033752 A2 WO 2006033752A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tubing
- section
- low temperature
- metallic tubing
- metallic
- Prior art date
Links
Classifications
-
- 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
- TITLE Method For Extending The Life Of Thin Walled Tubing And
- 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 material The second significant property of tubing material is strength or hardness. This quality resists dialation stresses of pressure and tension stresses of deployments in deep wells. [0004] A characteristic of steel is decreasing elongation with increasing hardness. Metallurgically, an ideal coil tubing is a paradox: hard for strength in deep or high pressure wells, ductile for repetitive reeling.
- 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.
- Fig. 1 In the continuous tube milling process, 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.
- Figure 1 is a schematic overview of a prior art system.
- Figures 2 and 2a are schematic overviews of an exemplary apparatus for practicing the present inventions' methods.
- Figure 3 is a view in partial perspective of a section of austempered tubing.
- Figure 3 is a schematic view of an exemplary deployment of austempered tubing in a well.
- Figure 5 is a block diagram of a first method of the present invention.
- Figure 6 is a block diagram of a second method of the present invention.
- Figure 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
- 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 0 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 0 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 0 F. Cooling cooling may be accomplished by numerous equivalent means including by forced convection. Additional coolers may be present, e.g. water cooler
- 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
- austempered thin walled welded tube 12 may comprise first end region 12a 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 12b opposite first end region 12a 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 ot those methods where the austempered cylindrical body comprises first seam edge 12c, second seam edge 12d, and a wall having a thickness of less than 0.25 inches.
- Thin walled welded tube 12 may further comprise stress relieved welded seam 12e 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. 2a) is heated to a high temperature in the range of 1300-1600 0 F in heater 20 (Fig. 2a).
- 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. 2a) is moved from heater 20 (Fig. 2a) to low temperature reservoir 30 (Fig. 2a) 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 0 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. 2a) is allowed to transform to bainite and then moved out of low temperature reservoir 30 (Fig. 2a) as part of the continuous run process and cooled to a second low temperature below around 100 0 F. Cooling may be by forced convection, e.g. at cooler 40 (Fig. 2a).
- 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. 2a) into heater 20 (Fig. 2a) 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 0 F in heater 20 and then moved from heater 20 to low temperature reservoir 30 (Fig. 2a) 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 0 F in a time period of less than around 3 seconds.
- the section of metallic tubing 12 (Fig. 2a) 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. 2a) as part of the continuous run process and cooled to a second low temperature below around 100 0 F, e.g. at cooler 40 (Fig. 2a).
- the section of metallic tubing may be coiled, e.g. about reel 17 (Fig. 2a).
- a section of thin walled metallic tubing 12 (Fig. 2a) having a welded seam and a wall thickness of less than 0.25 inches is extended from a coil mounted about reel 15 (Fig. 2a) into heater 20 (Fig. 2a) 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 0 F in heater 20 (Fig. 2a) and then moved from heater
- low temperature reservoir 30 (Fig. 2a) as part of the continuous run process.
- 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
- the section of metallic tubing 12 transformed to bainite is then moved out of low temperature reservoir 30 (Fig. 2a) as part of the continuous run process cooled to a second low temperature below around 100 0 F, e.g. at cooler 40 (Fig. 2a).
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0515458-8A BRPI0515458A (en) | 2004-09-17 | 2005-08-22 | method for extending the service life of thin-walled and stress-free thin-walled pipe by austempered welding |
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 (en) | 2004-09-17 | 2005-08-22 | Method for extending the life of thin tube materials and austempered stress-relieved thin tube materials |
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 |
MX2007003098A MX2007003098A (en) | 2004-09-17 | 2005-08-22 | Method for extending the life of thin walled tubing and austempered weld stress relieved thin walled tubing. |
NO20071959A NO20071959L (en) | 2004-09-17 | 2007-04-17 | Procedure for extending the life of thin-walled rudders and un-tempered welding voltage-relieved thin-walled rudders |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/943,575 | 2004-09-17 | ||
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006033752A2 true WO2006033752A2 (en) | 2006-03-30 |
WO2006033752A3 WO2006033752A3 (en) | 2008-08-21 |
Family
ID=36072658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (9)
Country | Link |
---|---|
US (2) | US20060060267A1 (en) |
EP (1) | EP1799870A2 (en) |
JP (1) | JP2008513604A (en) |
BR (1) | BRPI0515458A (en) |
CA (1) | CA2580462A1 (en) |
MX (1) | MX2007003098A (en) |
NO (1) | NO20071959L (en) |
WO (1) | WO2006033752A2 (en) |
ZA (1) | ZA200703074B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100422353C (en) * | 2007-06-28 | 2008-10-01 | 朱兴发 | Medium frequency induction heating treatment method for steel pipe, petroleum well pipe and drill pipe |
US20120111581A1 (en) * | 2010-11-04 | 2012-05-10 | Schlumberger Technology Corporation | Apparatus and method for reducing the residual bending and fatigue in coiled tubing |
CN108018488B (en) * | 2017-12-13 | 2019-03-08 | 武汉钢铁有限公司 | A kind of CT110 grades of connecting pipes hot rolled strip and production method |
CN107964637B (en) * | 2017-12-13 | 2019-04-30 | 武汉钢铁有限公司 | A kind of CT100 grades of connecting pipes hot rolled strip and production method |
CN111560510A (en) * | 2020-04-23 | 2020-08-21 | 中国重型机械研究院股份公司 | Steel pipe heat treatment quenching method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4533405A (en) * | 1982-10-07 | 1985-08-06 | Amax Inc. | Tubular high strength low alloy steel for oil and gas wells |
Family Cites Families (4)
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 |
GB985022A (en) * | 1960-04-28 | 1965-03-03 | British Iron Steel Research | Improvements in or relating to the continuous heat treatment of elongate metal material |
US4715907A (en) * | 1985-07-08 | 1987-12-29 | Tocco, Inc. | Method for heat treating ferrous parts |
-
2004
- 2004-09-17 US US10/943,575 patent/US20060060267A1/en not_active Abandoned
-
2005
- 2005-08-22 CA CA002580462A patent/CA2580462A1/en not_active Abandoned
- 2005-08-22 MX MX2007003098A patent/MX2007003098A/en unknown
- 2005-08-22 WO PCT/US2005/029896 patent/WO2006033752A2/en active Application Filing
- 2005-08-22 BR BRPI0515458-8A patent/BRPI0515458A/en not_active IP Right Cessation
- 2005-08-22 JP JP2007532345A patent/JP2008513604A/en active Pending
- 2005-08-22 EP EP05790152A patent/EP1799870A2/en not_active Withdrawn
-
2007
- 2007-04-16 ZA ZA200703074A patent/ZA200703074B/en unknown
- 2007-04-17 NO NO20071959A patent/NO20071959L/en not_active Application Discontinuation
- 2007-08-28 US US11/846,097 patent/US20080042327A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4533405A (en) * | 1982-10-07 | 1985-08-06 | Amax Inc. | Tubular high strength low alloy steel for oil and gas wells |
Also Published As
Publication number | Publication date |
---|---|
NO20071959L (en) | 2007-04-17 |
EP1799870A2 (en) | 2007-06-27 |
MX2007003098A (en) | 2007-05-16 |
BRPI0515458A (en) | 2008-07-22 |
JP2008513604A (en) | 2008-05-01 |
CA2580462A1 (en) | 2006-03-30 |
US20080042327A1 (en) | 2008-02-21 |
ZA200703074B (en) | 2010-01-27 |
US20060060267A1 (en) | 2006-03-23 |
WO2006033752A3 (en) | 2008-08-21 |
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