CN105886861A - Aluminum alloy coiled tubing and manufacturing method thereof - Google Patents
Aluminum alloy coiled tubing and manufacturing method thereof Download PDFInfo
- Publication number
- CN105886861A CN105886861A CN201610312303.6A CN201610312303A CN105886861A CN 105886861 A CN105886861 A CN 105886861A CN 201610312303 A CN201610312303 A CN 201610312303A CN 105886861 A CN105886861 A CN 105886861A
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- aluminium alloy
- coiled tubing
- aluminum alloy
- welding
- steel band
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
Abstract
The invention discloses an aluminum alloy coiled tubing and a manufacturing method thereof. The aluminum alloy coiled tubing comprises, by weight, 0-0.4% of Si, 0-0.5% of Fe, 1.2%-2.0% of Cu, 0-0.3% of Mn, 2.1%-2.9% of Mg, 0.18%-0.28% of Cr, 5.1%-6.1% of Zn, 0-0.2% of Ti and the balance Al. The manufacturing method of the aluminum alloy coiled tubing comprises the steps of preparation of a coiled plate, longitudinal shearing of the coiled plate, lengthening of a steel belt, forming, welding and continuous coiling. The length of the aluminum alloy coiled tubing is 1000-6000 m, the yield strength of the aluminum alloy coiled tubing is 400 MPa or over, the tensile strength of the aluminum alloy coiled tubing is 500 MPa or over, and the hardness of the aluminum alloy coiled tubing is equal to or lower than 22 HRC. The aluminum alloy coiled tubing is low in weight, good in corrosion resistance and capable of being applied to deep oil and gas wells in complicated corrosion environment.
Description
Technical field:
The present invention relates to petroleum gas tubing technical field, be specifically related to a kind of aluminium alloy and manage continuously and manufacture
Method.
Background technology:
Continuously pipe is that a kind of high intensity, high-ductility the joint length with certain corrosion resistance are up to thousands of rice
Novel oil gas tubing.Owing to continuous Manifold technology has, efficiency height, low cost, job area be wide, floor space
A series of technological merits and the operation advantage such as little, therefore pipe will be in exploration of oil and gas field, exploitation, operation, increasing continuously
Product plays the most important effect, has broad application prospects.
The material of coiled tubing mainly has High-Strength Low-Alloy carbon steel, High-Strength Low-Alloy chrome molybdenum the most both at home and abroad
Steel.High-Strength Low-Alloy carbon steel yield strength 482MPa, tensile strength 551MPa.High-Strength Low-Alloy chromium
Molybdenum steel is current on-the-spot most widely used coiled tubing material, yield strength 551MPa, elongation percentage > 28%,
Hardness HRC > 22, owing in raw material, the content of Cr and Mo element is higher, carry out after making coiled tubing
Quenching and tempering heat treatment, thus constitute martensitic grain structure, and to improve the intensity of steel, yield strength can
Reach more than 690MPa.Along with the intensity of steel improves, coiled tubing body load is consequently increased, and body is
Long length increases, and depth of falling well is deeper, but due to steel autologous density (7.8g/cm3Left and right) relatively big, from
Body weight tube length, homogeneous tube depth of falling well will be limited to.
Along with the development of petroleum natural gas exploration, the environment that oil-gas mining faces is more and more severe, particularly
High carbonated, the appearance in succession of the sulfur component oil gas field such as hydrogen sulfide and element sulphur so that low-alloy carbon steel
The etching problem of pipe is more and more prominent continuously.High Temperature High Pressure multiphase flow environment under Oil/gas Well contains CO2、
H2The corrosive gas such as S and the Cl of high concentration-、HCO3-Etc. corrosivity anion, output water belongs to NaHCO3
And CaCl2Water type, and salinity is higher.Above corrosive medium under uniform temperature and pressure condition all with ion
Form long term is in low-alloy carbon steel continuous pipe outer surface of tube body, with Fe or Fe in body2+React
And corrode body.Low-carbon alloy steel coiled tubing is used in this environment, its corrosion resistance and use longevity
Life will be had a greatly reduced quality.
In sum, propose with utilize a kind of have higher-strength, high-ductility aluminium alloy continuous for development of raw materials
Oil pipe.Aluminium alloy has the little (2.8g/cm of density3Left and right), the advantage such as light weight, corrosion resistance be good.Of the same race
In the case of specification and intensity, aluminium alloy coiled tubing tube length is continuous by make much larger than low-carbon alloy steel
Oil pipe, its depth of falling well is deeper；And aluminium alloy and low-carbon alloy steel are at H2S and CO2Deng in corrosive environment
Compare and there is more preferable corrosion resistance.So it is multiple to utilize aluminum titanium alloy exploitation coiled tubing to can be applicable to corrosive environment
Miscellaneous.
Summary of the invention:
In order to overcome above-mentioned technical problem, it is an object of the invention to provide a kind of aluminium alloy and manage continuously, this is managed continuously
Light weight, has higher intensity, good corrosion resistance, can apply in the deeper Oil/gas Well of well depth,
The purpose of the present invention also provides for the manufacture method of the continuous pipe of a kind of aluminium alloy.
In order to solve above-mentioned technical problem, the technical scheme is that
A kind of aluminium alloy is managed continuously, and according to percentage by weight, this aluminium alloy continuous pipe plate chemical composition is:
Si≤0.4, Fe≤0.5, Cu:1.2～2.0, Mn≤0.3, Mg:2.1～2.9, Cr:0.18～0.28, Zn:
5.1～6.1, Ti≤0.2, Al surplus.
Yield strength >=the 400MPa of the continuous pipe of aluminium alloy of the present invention, tensile strength >=500MPa, hardness
≤22HRC。
The manufacture method manufacturing the continuous pipe of above-mentioned aluminium alloy is:
Step 1: the preparation of roll bending: material chemical component is combined blow converter and aluminum bag refine and stove through the end, top
Outer refine, pours into continuous casting billet；Strand is heated to 600～760 DEG C, and casts slab with electromagnetism mixing control
Thickness be 20～60mm；Carry out finish to gauge after casting slab, rolled into the hot rolled plate of 2.4～6.35mm thickness,
Finishing temperature is 350～450 DEG C；Hot rolled plate crimps at 100～200 DEG C, makes length >=500 meter, thickness
Meet the roll bending that application requires.
Step 2: roll bending slitting and steel band spreading: by slitting line, roll bending is cut into the steel band of 80～300mm,
After at 45 ° for the end machining of two steel bands of front and back, reasonable finished edge, groove can be I type, V-type or
U-shaped；Steel band spreading, welding method are used plasma landfilling area or argon arc by the method using 45 ° of inclined weld docking
Weldering, required welding wire is the special welding wire developed；After weld seam cools down, trimming surface, then by weld seam and
Heat affected area is reheated to 300～350 DEG C, insulation 0.5～2h, and uses the pressure of 2～9 tons, by weld seam
And heat affected area carries out high temperature rolling, weld dimensions natural cooling after rolling；Whole process uses inertia
Gas shield.
Step 3: molding with weld: will docking after steel band both sides be processed into I type, V-type or X-type groove,
UOE row-roll forming process method is used to control steel belt molding；Utilize the solder technology such as the laser welding steel band to molding
Carrying out longitudinal measure, speed of welding is 5～10m/min, and finally giving caliber is Φ 25.4～Φ 88.9mm, wall
Thickness be 2.4～6.35mm vertical masonry joint aluminium alloy manage continuously；
Step 4: continuous crisping: the continuous pipe of welding is wound on the reel of suitable core diameter by coiling machine,
The vertical masonry joint aluminium alloy obtaining a length of 1000～6000m is managed continuously.
Beneficial effects of the present invention:
1, the present invention uses Al-Zn-Mg-Cu System Design chemical composition, owing to the density of aluminium alloy is little, matter
Amount is light, the tube length of the continuous pipe of aluminium alloy up to 1000～6000m, solve High-Strength Low-Alloy carbon steel,
High-Strength Low-Alloy chrome-molybdenum steel is big due to autologous density, the shortcoming that homogeneous tube depth of falling well is limited to.
2, the present invention manufactures aluminium alloy continuous pipe yield strength >=400MPa, tensile strength 500 >=MPa, hard
Degree≤22HRC, the corrosion resistance having had is strong, be suitable for, well depth complicated at corrosive environment deeper oil gas
In well.
Detailed description of the invention:
1, aluminium alloy continuous pipe roll bending is prepared
The present invention uses Al-Zn-Mg-Cu system, using aluminum water as main material, is combined blow converter through the end, top
Reach following requirement with the composition quality percent of aluminum bag refine and external refining aluminum water can come out of the stove, the company of pouring into
Strand.
| Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Al |
| ≤0.4 | ≤0.5 | 1.2-2.0 | ≤0.3 | 2.1-2.9 | 0.18-0.28 | 5.1-6.1 | ≤0.2 | Surplus |
Use continuous casting technology application electromagnetic agitation to control to cast the slab of 20～60mm thickness, be reheated to about
350～450 DEG C, use hot strip mill by thermomechanical control technique (TMPC) roll into thickness be 4.44mm,
Width is the hot rolled plate of 1180mm, then through suitable control cooling, forms superhigh intensity continuous pipe roll bending,
After eventually passing pickling, detection, it is curled into roll bending for tubulation through tension force crimping machine.
2, the continuous control of superhigh intensity is standby
(1) roll bending slitting and steel band spreading
The continuous pipe roll bending prepared is cut into by slitting line the steel band of 157mm.For meeting continuous pipe range
Degree requirement, carries out steel band plate plate butt welding, makes steel band couple together by 45 ° of inclined weld modes；Will front and back two
The end machining of steel band is at 45 °, uses the mode of plasma weldering to weld, and welding overall process uses purity
The argon of >=99.7%, as protective gas, carries out plate plate butt welding under continuous gas is protected；Will weldering after weldering cutting edge of a knife or a sword cooling
Seam carries out heating and rolling process, rapidly weld seam is heated to 300～350 DEG C, is incubated 0.5～2h, with roll pair
Weld seam extrudes, and squeeze pressure is about 4 tons；Whole process utilizes the argon of purity >=99.7% as protection gas
Body
(2) continuously pipe molding with weld
Steel band edges of boards use milling limit method to be V-type by edge milling, accurately control strip width and edges of boards perpendicularity；
UOE row-roll forming process method is used to control steel belt molding；Use laser welding technology welding aluminum alloy continuous pipe pipe
Base, weldering speed 5～10m/min, laser power density 105～106w/cm2.Being welded into caliber is Φ 50.8mm,
Wall thickness is that the aluminium alloy of 4.44mm is managed continuously.
(3) continuous crisping of the continuous pipe of aluminium alloy
Being wound on the reel of suitable core diameter by coiling machine, continuous system is continuous for 3500m superhigh intensity
Pipe, in order to transport and use.
(4) main performance of the continuous pipe of aluminium alloy
Yield strength is 420MPa, and tensile strength is 524MPa, and elongation percentage reaches 15%.
Above content is to combine concrete preferred implementation further description made for the present invention, it is impossible to
Assert that the detailed description of the invention of the present invention is only limitted to this, for general technical staff of the technical field of the invention
For, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, all answer
Scope of patent protection is determined by the claims submitted to when being considered as belonging to the present invention.
Claims (5)
1. an aluminium alloy is managed continuously, it is characterised in that: according to percentage by weight, described aluminium alloy is managed continuously
Sheet material chemical composition is: Si≤0.4, Fe≤0.5, Cu:1.2～2.0, Mn≤0.3, Mg:2.1～2.9, Cr:
0.18～0.28, Zn:5.1～6.1, Ti≤0.2, Al surplus.
2. aluminium alloy as claimed in claim 1 is managed continuously, it is characterised in that: the continuous pipe of described aluminium alloy
Yield strength >=400MPa, tensile strength >=500MPa, hardness≤22HRC.
3. the manufacture method of the continuous pipe of aluminium alloy described in manufacturing claims 1, it is characterised in that: include with
Lower step:
Step 1: the preparation of roll bending
Material chemical component is combined blow converter and aluminum bag refine and external refining through the end, top, pours into continuous casting
Base；Strand is heated to 600～760 DEG C, and to cast the thickness of slab with electromagnetism mixing control be 20～60mm；
Carry out finish to gauge after casting slab, rolled into the hot rolled plate of 2.4～6.35mm thickness, finishing temperature be 350～
450℃；Hot rolled plate crimps at 100～200 DEG C, make length >=500 meter, thickness meet application require volume
Plate；
Step 2: roll bending slitting and steel band spreading
By slitting line, roll bending is cut into the steel band of 80～300mm, the end machining of two steel bands of front and back is become
After 45 °, reasonable finished edge；Use the method for 45 ° of inclined welds docking by steel band spreading, welding method employing etc. from
Sub-landfilling area or argon arc welding；After weld seam cools down, trimming surface, then by weld dimensions again
It is heated to 300～350 DEG C, insulation 0.5～2h, and use the pressure of 2～9 tons, weld dimensions is entered
Row high temperature rolling, weld dimensions natural cooling after rolling；Whole process uses inert gas shielding；
Step 3: molding with weld
I type, V-type or X-type groove are processed in steel band both sides after docking, use UOE row-roll forming process side
Method controls steel belt molding；The steel band of molding is carried out longitudinal measure, and speed of welding is 5～10m/min, final
Be Φ 25.4～Φ 88.9mm to caliber, wall thickness be 2.4～6.35mm vertical masonry joint aluminium alloy manage continuously；
Step 4: continuous crisping
By welding continuous pipe be wound on the reel of suitable core diameter by coiling machine, it is thus achieved that a length of 1000～
The vertical masonry joint aluminium alloy of 6000m is managed continuously.
4. the manufacture method of the continuous pipe of aluminium alloy as claimed in claim 3, it is characterised in that: described step
Cut in 2 is I type, V-type or X-type.
5. the manufacture method of the continuous pipe of aluminium alloy as claimed in claim 3, it is characterised in that: described step
In 3, longitudinal measure uses laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312303.6A CN105886861B (en) | 2016-05-12 | 2016-05-12 | A kind of aluminium alloy is continuously managed and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312303.6A CN105886861B (en) | 2016-05-12 | 2016-05-12 | A kind of aluminium alloy is continuously managed and its manufacture method |
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| Publication Number | Publication Date |
|---|---|
| CN105886861A true CN105886861A (en) | 2016-08-24 |
| CN105886861B CN105886861B (en) | 2017-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610312303.6A Active CN105886861B (en) | 2016-05-12 | 2016-05-12 | A kind of aluminium alloy is continuously managed and its manufacture method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636778A (en) * | 2016-12-25 | 2017-05-10 | 北京航空航天大学 | Method for preparing high strength aluminum alloy by adopting plasma process |
| CN108251721A (en) * | 2018-01-23 | 2018-07-06 | 中南大学 | A kind of high-strength degradable aluminium alloy and preparation method thereof, application |
| CN114083235A (en) * | 2021-11-12 | 2022-02-25 | 内蒙古联晟新能源材料有限公司 | Preparation method of high-strength aluminum alloy sleeve |
Citations (5)
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|---|---|---|---|---|
| US3993476A (en) * | 1974-02-20 | 1976-11-23 | Hitachi, Ltd. | Aluminum alloy |
| US20060105193A1 (en) * | 2004-10-19 | 2006-05-18 | Corus L.P. | Method of producing an aluminium alloy brazing sheet and light brazed heat exchanger assemblies |
| CN1973056A (en) * | 2004-05-26 | 2007-05-30 | 克里斯铝轧制品有限公司 | Process for producing an aluminium alloy brazing sheet, aluminium alloy brazing sheet |
| CN104532090A (en) * | 2014-12-31 | 2015-04-22 | 中国石油天然气集团公司 | 580Mpa-level aluminum alloy pipe for drill stem and manufacturing method thereof |
| CN104745903A (en) * | 2015-03-27 | 2015-07-01 | 中国石油天然气集团公司 | Aluminum alloy for 480 MPa-class aluminum alloy oil pipe and pipe manufacturing method thereof |
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2016
- 2016-05-12 CN CN201610312303.6A patent/CN105886861B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3993476A (en) * | 1974-02-20 | 1976-11-23 | Hitachi, Ltd. | Aluminum alloy |
| CN1973056A (en) * | 2004-05-26 | 2007-05-30 | 克里斯铝轧制品有限公司 | Process for producing an aluminium alloy brazing sheet, aluminium alloy brazing sheet |
| US20060105193A1 (en) * | 2004-10-19 | 2006-05-18 | Corus L.P. | Method of producing an aluminium alloy brazing sheet and light brazed heat exchanger assemblies |
| CN104532090A (en) * | 2014-12-31 | 2015-04-22 | 中国石油天然气集团公司 | 580Mpa-level aluminum alloy pipe for drill stem and manufacturing method thereof |
| CN104745903A (en) * | 2015-03-27 | 2015-07-01 | 中国石油天然气集团公司 | Aluminum alloy for 480 MPa-class aluminum alloy oil pipe and pipe manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| CHUN FENG等: "Microstructure and mechanical properties of high strength Al−Zn−Mg−Cu alloys used for oil drill pipes", 《TRANSACTION OF NONFERROUS METALS SOCIETY OF CHINA》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636778A (en) * | 2016-12-25 | 2017-05-10 | 北京航空航天大学 | Method for preparing high strength aluminum alloy by adopting plasma process |
| CN106636778B (en) * | 2016-12-25 | 2017-12-29 | 北京航空航天大学 | A kind of method that high strength alumin ium alloy is prepared using plasma process |
| CN108251721A (en) * | 2018-01-23 | 2018-07-06 | 中南大学 | A kind of high-strength degradable aluminium alloy and preparation method thereof, application |
| CN114083235A (en) * | 2021-11-12 | 2022-02-25 | 内蒙古联晟新能源材料有限公司 | Preparation method of high-strength aluminum alloy sleeve |
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| Publication number | Publication date |
|---|---|
| CN105886861B (en) | 2017-08-22 |
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Effective date of registration: 20181015 Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: Baoji Petroleum Steel Pipe Co., Ltd. Patentee after: China Petroleum and Natural Gas Group Co., Ltd. Address before: 721008 10 Jiang Tan Road, Weibin District, Baoji, Shaanxi. Patentee before: Baoji Petroleum Steel Pipe Co., Ltd. |
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