US20080042327A1 - System for Extending the Life of Thin Walled Tubing and Austempered Weld Stress Relieved Thin Walled Tubing - Google Patents
System for Extending the Life of Thin Walled Tubing and Austempered Weld Stress Relieved Thin Walled Tubing Download PDFInfo
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- US20080042327A1 US20080042327A1 US11/846,097 US84609707A US2008042327A1 US 20080042327 A1 US20080042327 A1 US 20080042327A1 US 84609707 A US84609707 A US 84609707A US 2008042327 A1 US2008042327 A1 US 2008042327A1
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- tubing
- low temperature
- section
- heater
- metallic tubing
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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
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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
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
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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
- C21D1/34—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 As each instance tubing is rolled on or off a coil tubing reel, it is permanently elongated. The elongation accumulates until exhausted and the tubing breaks. Hence, 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 dilation stresses 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 a 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. 4 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 into 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 ).
Abstract
The present invention is directed to a method of extending the life of thin walled tubing by austempering the tubing in a controlled continuous run 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.
Description
- This application is a divisional of U.S. patent application Ser. No. 10/943,575, filed Sep. 17, 2004 and still pending.
- 1. Field Of The Invention
- 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.
- 2. Description of the Prior Art
- As each instance tubing is rolled on or off a coil tubing reel, it is permanently elongated. The elongation accumulates until exhausted and the tubing breaks. Hence, elongation is a significant property of the tubing material.
- The second significant property of tubing material is strength or hardness. This quality resists dilation stresses of pressure and tension stresses of deployments in deep wells.
- 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.
- Present technology coil tubing steels have a martensitic structure. Martensite has unfavorable hardness versus elongation trade-off. On the other hand, austempered steels have a bainitic structure. Bainitic structured steels are not only hard, but also retain commendable elongation.
- 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.
- 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 a 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. - In the continuous tube milling process, the sizing operation in
FIG. 1 work-hardens the tubing increasing the strength. The thermal processes depicted inFIG. 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. 4 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. - Referring now to
FIG. 2 ,exemplary apparatus 10 for austempering thin walled tubing according to the methods of the present inventions comprisesheater 20,low temperature reservoir 30, andcooler 40.Apparatus 10 is adapted to be used with continuous runs oftubing 12 while practicing the methods of the present invention. As used herein, 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. In an embodiment,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 fromsource 15 of a substantially continuous supply of metal, e.g. a rolled strip, and formed into a tubular attube former 90. Seams created by tube formation may be welded atseam welder 91 and the formed seam scarfed atscarfer 92. -
Heater 20 is adapted to accept a section ofmetallic 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 withinlow temperature reservoir 30. -
Low temperature reservoir 30 is adapted to accept a moving section ofmetallic 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 ofmetallic 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. - Additional processing may occur after the second cooling. For example, austempered
metallic tubing 12 may be sized atsizing rollers 94 and cooled further bycoolers - Austempered
metallic tubing 12 may then be taken up, e.g. attakeup reel 17. - Austempered thin walled welded
tube 12 may be coiled on a reel, e.g., takeupreel 17, which may be further mounted on ship 16 (FIG. 2 a). - Referring to
FIG. 3 , austempered thin walled weldedtube 12 may comprisefirst end region 12 a adapted to be attached todevice 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 weldedtube 12 may further comprisesecond end region 12 b oppositefirst end region 12 a which may be adapted to be further connected todevice 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. Moreover, thin walled weldedtube 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 comprisesfirst seam edge 12 c,second seam edge 12 d, and a wall having a thickness of less than 0.25 inches. Thin walled weldedtube 12 may further comprise stress relieved weldedseam 12 e joining the first and second seam edges. - Referring now to
FIG. 4 , in an exemplary embodiment thin walled weldedtube 12 is unspooled fromtakeup reel 17. One end of thin walled weldedtube 12 is connected to pump 18 and the other end deployed through well casing 90 and/orproduction tubing 91, terminating intool 19. - In the operation of exemplary embodiments, referring now to
FIG. 5 , in a first exemplary method for austempering thin walled tubing, 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 ofmetallic tubing 12 has a wall thickness of less than 0.25 inches, preferably around 0.120 inches. - After being heated, 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 inlow temperature reservoir 30, the section ofmetallic tubing 12 is quenched to reduce the temperature of the section ofmetallic 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 ofmetallic 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 inlow 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). - In a second exemplary method, referring to
FIG. 6 , a further exemplary method for austempering thin walled coiled tubing 12 (FIG. 2 a) comprises extending a section of thin walledmetallic 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 ofmetallic tubing 12 is heated to a high temperature in the range of 1300-1600° F. inheater 20 and then moved fromheater 20 to low temperature reservoir 30 (FIG. 2 a) as part of the continuous run process. Inlow temperature reservoir 30, the section ofmetallic tubing 12 is quenched inlow temperature reservoir 30 to reduce the temperature of the section ofmetallic 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 ofmetallic 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). - After it reaches the second low temperature, the section of metallic tubing may be coiled, e.g. about reel 17 (
FIG. 2 a). - In a third exemplary method, referring now to
FIG. 7 , 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 ofmetallic tubing 12 is heated to a high temperature in the range of 1300-1600° F. in heater 20 (FIG. 2 a) and then moved fromheater 20 to low temperature reservoir 30 (FIG. 2 a) as part of the continuous run process. Inlow temperature reservoir 30, the section ofmetallic tubing 12 is quenched to reduce the temperature of the section ofmetallic 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 ofmetallic 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). - The foregoing disclosure and description of the inventions are illustrative and explanatory. Various changes in the size, shape, and materials, as well as in the details of the illustrative construction and/or a illustrative method may be made without departing from the spirit of the invention.
Claims (12)
1. An apparatus for austempering a continuous run of thin walled tubing, comprising:
a. a heater adapted to heat a section of continuous run metallic tubing to a high temperature in excess of around 1300° F.;
a non-water based low temperature reservoir operatively in communication with the heater and adapted to accept a heated section of the metallic tubing from the heater and cool the received heated section of the metallic tubing to a first cooled temperature; and
a first cooler operatively in communication with the non-water based low temperature reservoir and adapted to accept the cooled section of metallic tubing from the non-water based low temperature reservoir and cool the section of metallic tubing to a second cooled temperature below 100° F.
2. The apparatus of claim 1 , wherein the heater is configured to accept a section of metallic tubing that has a wall thickness of less than 0.25 inches.
3. The apparatus of claim 1 , wherein the high temperature is in the range of around 1300 to around 1600° F.
4. The apparatus of claim 1 , wherein the heater comprises at least one of (i) an induction heater or (ii) a flame.
5. The apparatus of claim 1 , wherein the heater is located at least one of (i) proximate the low temperature reservoir, (ii) partially disposed within the low temperature reservoir, or (iii) totally disposed within the low temperature reservoir.
6. The apparatus of claim 1 , wherein the low temperature reservoir is a molten salt bath.
7. The apparatus of claim 1 , wherein the non-water based low temperature reservoir is adapted to reduce the temperature of the moving section of the metallic tubing as part of a continuous run process to a first low temperature in the range of 500-1000° F.
8. The apparatus of claim 1 , wherein non-water based low temperature reservoir is adapted to reduce the temperature in a time period of less than 3 seconds.
9. The apparatus of claim 1 , where the first cooler is a forced convection cooler.
10. The apparatus of claim 1 , further comprising a plurality of rollers disposed intermediate the heater, the non-water low temperature reservoir, and the first cooler.
11. The apparatus of claim 1 , further comprising a second cooler adapted to receive the moving section of the metallic tubing from the first cooler.
12. The apparatus of claim 1 , further comprising a take up reel adapted to take up a cooled moving section of the metallic tubing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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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 (2)
Application Number | Priority Date | Filing Date | Title |
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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 |
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 |
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US10/943,575 Division 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 |
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US20080042327A1 true US20080042327A1 (en) | 2008-02-21 |
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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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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 |
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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) |
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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 |
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 |
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 |
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 |
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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 |
-
2004
- 2004-09-17 US US10/943,575 patent/US20060060267A1/en not_active Abandoned
-
2005
- 2005-08-22 EP EP05790152A patent/EP1799870A2/en not_active Withdrawn
- 2005-08-22 BR BRPI0515458-8A patent/BRPI0515458A/en not_active IP Right Cessation
- 2005-08-22 CA CA002580462A patent/CA2580462A1/en not_active Abandoned
- 2005-08-22 JP JP2007532345A patent/JP2008513604A/en active Pending
- 2005-08-22 WO PCT/US2005/029896 patent/WO2006033752A2/en active Application Filing
- 2005-08-22 MX MX2007003098A patent/MX2007003098A/en unknown
-
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 (5)
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 |
Also Published As
Publication number | Publication date |
---|---|
BRPI0515458A (en) | 2008-07-22 |
JP2008513604A (en) | 2008-05-01 |
ZA200703074B (en) | 2010-01-27 |
CA2580462A1 (en) | 2006-03-30 |
US20060060267A1 (en) | 2006-03-23 |
WO2006033752A2 (en) | 2006-03-30 |
MX2007003098A (en) | 2007-05-16 |
EP1799870A2 (en) | 2007-06-27 |
NO20071959L (en) | 2007-04-17 |
WO2006033752A3 (en) | 2008-08-21 |
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Legal Events
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Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |