CN1329544C - High anti-extrusion petroleum casing pipe and method for producing same - Google Patents
High anti-extrusion petroleum casing pipe and method for producing same Download PDFInfo
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- CN1329544C CN1329544C CNB2005100384727A CN200510038472A CN1329544C CN 1329544 C CN1329544 C CN 1329544C CN B2005100384727 A CNB2005100384727 A CN B2005100384727A CN 200510038472 A CN200510038472 A CN 200510038472A CN 1329544 C CN1329544 C CN 1329544C
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Abstract
The present invention relates to a petroleum casing pipe with high collapse resistance and a production method thereof, which belongs to the technical field of petroleum casing pipes. The steel grade used for the casing pipe comprises the components of the percentage by mass: 0.34 to 0.39% of C, 0.20 to 0.35% of Si, 1.25 to 1.50% of Mn, 0.06 to 0.09% of Al, lower than 0.010% of S, lower than 0.015% of P, lower than 0.20% of Cr, lower than 0.20% of Ni and lower than 0.20% of Cu. The casing pipe is produced by a heat treatment process of tempering after quenching, the quenching medium is water, the quenching temperature is 860 DEG C (+/-)10 DEG C, and the tempering temperature is higher than 500 DEG C. After being processed in a heat treatment mode, the casing pipe needs to be straightened, the straightening is carried out in a hot straightening mode, and the temperature for the hot straightening is from 450 DEG C to 480 DEG C. The collapse resistance of the casing pipe with high collapse resistance, which is produced by the method of the present invention is enhanced by more than 15% as compared with the API standard value; compared with the production cost of a common casing pipe, the production cost of the present invention is increased by at most 5%.
Description
Technical field
The invention belongs to high strength petroleum sleeve pipe and production method thereof, particularly a kind of petroleum casing pipe and production method thereof with higher anti-crowded performance belongs to the petroleum casing pipe technical field.
Background technology
Along with the increase of drilling depth and the progress of drilling technique, the outer crowded load ratio that petroleum casing pipe need bear was bigger in the past, in some cases, common petroleum casing pipe has been difficult to satisfy service requirements, and it is increasing to have higher anti-" high collapse strength " consumption that squeezes performance.The factor that influences the anti-crowded performance of sleeve pipe is a lot, and wherein principal element has: the strength of materials, casing wall thickness, unrelieved stress, external diameter out of roundness, eccentricity etc.Concerning sleeve pipe factory, according to equipment and the processing condition of self, the definite principal element that will control to improve the anti-performance of squeezing of telescopic to greatest extent, is the key of exploitation high collapse strength.
The technical difficult points of restriction common petroleum collapse resistance raising at present has: the unreasonable sleeve pipe unrelieved stress that causes of thermal treatment process and method for aligning is too high; Can't determine which is the principal element that needs control, the anti-effect of squeezing improves not obvious; Sleeve pipe geometric accuracy difference etc.These problems cause the anti-unstable properties of squeezing of present ordinary casing or even high collapse strength, have restricted the development of China's high collapse strength.The anti-performance of squeezing of telescopic is not only relevant, also closely related with its production method with the material composition that sleeve pipe adopts.Research high collapse strength and production technology thereof are the still afoot problems of present each sleeve pipe factory.
Find by prior art documents, the Chinese patent publication number is CN1391022A, application number 01118711.5, open day is on January 15th, 2003, the patent of invention name is called: ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze and production method thereof, this patent readme is: a kind of ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze is characterized by: the petroleum casing pipe steel grade is except that Fe, and other steel grades is: C0.20-0.35; Si0.15-0.55; Mn0.85-1.25; P<0.030; S<0.030; Cr0.80-1.25; Mo0.20-0.60; Al0.010-0.050; Cu<0.20; Ni<0.20; V0.08-0.15.Petroleum casing pipe external diameter Ф 152-154mm, internal diameter: Ф 116-122mm, wall thickness: 15-20mm; Eccentricity≤15%, external diameter out of roundness≤0.5%, the intensity 〉=130000PSI of material, pipe residual stress≤160MPa, the sleeve pipe two ends are processed with the screw thread that is used to connect.
Its weak point is: the steel grade that this sleeve pipe adopts is that Cr-Mo is a steel, the production cost height; This cover external diameter of pipe is Ф 152-154mm, and the scope of application is little.
Summary of the invention
The object of the present invention is to provide a kind of high anti-extrusion petroleum casing pipe and production method thereof, overcome the shortcoming and defect of prior art, satisfy the needs of some special exploitation condition of oil field.By the petroleum casing pipe that this method is produced, the anti-performance of squeezing can reach more than 1.15 times of API standard value.
In order to achieve the above object, the present invention adopts following technical scheme.
Improve the chemical ingredients of sleeve pipe steel grade, the chemical ingredients that makes described sleeve pipe steel grade is except that Fe, and other composition is: C0.34-0.39, Si0.20-0.35, Mn1.25-1.50, Al0.06-0.09, S<0.010, P<0.015, Cr<0.20, Ni<0.20, Cu<0.20, unit is a mass percent.This steel grade is that C-Mn is a steel, and alloying element is few, and alloy content is low, and production technique is simple, thereby production cost is low.Increase an amount of element al, the content of strict simultaneously control S, P impurity improves this steel grade hardening capacity and toughness greatly.Increase C content, improved the intensity of material;
Except strictness is controlled to chemical ingredients, also to carry out strict more regulation to the telescopic geometric accuracy simultaneously, must satisfy following requirement: external diameter tolerance 0~+ 1.0%, wall thickness tolerance 0~15%, external diameter out of roundness≤0.45%, eccentricity≤13%;
Tempered thermal treatment process again after sleeve pipe adopts when producing and quenches, quenching temperature is 860 ℃ ± 10 ℃, and quenchant is a water, and tempering temperature is more than 500 ℃.Sleeve pipe needs through straightening processing after heat-treating, and aligning is forbidden cold straightening, must adopt caloric rectifing mode, and the hot straightening temperature is controlled between 450 ℃~480 ℃.This method is applied widely, can be used for producing all size sleeve pipe of external diameter from Ф 114.3mm~Ф 273.1mm.Through the petroleum casing pipe that this method is produced, its anti-performance of squeezing increases substantially, and collapsing strength can reach more than 1.15 times of API prescribed value.
Compared with prior art, the present invention has marked improvement, is in particular in: 1) adopting C-Mn is steel, the intensity height, and production technique is simple, and cost is lower; 2) thermal treatment process and hot straightening temperature are selected rationally to have reduced the telescopic unrelieved stress to greatest extent; 3) work out strict geometric accuracy span of control, under the rational situation of cost, improved the anti-performance of squeezing of telescopic.
Through the petroleum casing pipe that this method is produced, its anti-performance of squeezing increases substantially, and collapsing strength can reach more than 1.15 times of API prescribed value, and production cost only increases less than 5%.
Embodiment
First embodiment of the design is Ф 139.70 * 7.72mm WSP110T high collapse strength of 110KSI grade of steel.
1. this telescopic steel grades is:
C0.34-0.39,Si0.20-0.35,Mn1.25-1.50,Al0.06-0.09,S<0.010,P<0.015,Cr<0.20,Ni<0.20,Cu<0.20
2. this telescopic geometric accuracy span of control is as follows:
Cover external diameter of pipe: 139.82~140.46mm, wall thickness: 7.76~8.42mm, eccentricity:<13%, external diameter out of roundness:<0.45%
3. this telescopic thermal treatment process is:
Adopt quenching+tempering process, quench and adopt water quenching technology, quenching temperature is 860 ℃ ± 10 ℃, and tempering temperature is 500 ℃ ± 10 ℃.
Through thermal treatment, the mechanical property of material can reach following technical indicator: yield strength: 834-1062Mpa; Tensile strength: 〉=948Mpa; Unit elongation: 〉=15%; Ballistic work: 〉=26J (10 * 5L); Smart granularity is not less than 6 grades.
4. this telescopic method for aligning is:
Sleeve pipe is incubated 45 minutes in the low-temperaturetempering stove after, carries out hot straightening again and handle 450~480 ℃ of hot straightening temperature.
Through the WSP110T high collapse strength that this method is produced, it squeezes ruins intensity and can reach 62.95MPa, and the API prescribed value is 51.6Mpa, and collapsing strength has improved 22%.
Ф 114.30 * 6.35mm WSP95T high collapse strength that second embodiment of the design is the 95KSI grade of steel.
1. this telescopic steel grades is:
C0.34-0.39,Si0.20-0.35,Mn1.25-1.50,Al0.06-0.09,S<0.010,P<0.015,Cr<0.20,Ni<0.20,Cu<0.20。
2. this telescopic geometric accuracy span of control is as follows:
Cover external diameter of pipe: 114.42~114.86mm, wall thickness: 6.39~6.88mm, eccentricity:<13%, external diameter out of roundness:<0.45%.
3. this telescopic thermal treatment process is:
Adopt quenching+tempering process, quench and adopt water quenching technology, quenching temperature is 860 ℃ ± 10 ℃, and tempering temperature is 540 ℃ ± 10 ℃.
Through thermal treatment, the mechanical property of material can reach following technical indicator:
Yield strength: 721-834Mpa; Tensile strength: 〉=796Mpa; Unit elongation: 〉=16%; Ballistic work: 〉=20J (10 * 5L); Smart granularity is not less than 6 grades.
4. this telescopic method for aligning is:
Sleeve pipe is incubated 45 minutes in the low-temperaturetempering stove after, carries out hot straightening again and handle 450~480 ℃ of hot straightening temperature.
Through the WSP95T high collapse strength that this method is produced, it squeezes ruins intensity and can reach 60.8MPa, and the API prescribed value is 48.5MPa.Collapsing strength has improved 26%.
The relevant patent documentation of retrieval:
<application number〉01118711.5
<denomination of invention〉ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze and production method thereof
<applicant〉Tianjin Steel Pipe Corp.
<contriver〉Yan Zesheng; Qiu Feng; Wang Jing; Pay and inherit; Zhang Chuanyou etc.
<digest〉a kind of ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze, the steel grade composition is: C0.20-0.35, Si0.15-0.55, Mn0.85-1.25, P≤0.030, S≤0.030, Cr0.80-1.25, Mo0.20-0.60, Al0.010-0.050, Cu≤0.20, Ni≤0.20, V0.08-0.15.External diameter: Ф 152-154mm, internal diameter: Ф 116-122mm, wall thickness: 15-20mm, the strength of materials>130000KSI, pipe residual stress≤160MPa.
Claims (2)
1, a kind of high anti-extrusion petroleum casing pipe, it is characterized in that: be used for this telescopic steel grades except that the Fe element, other composition is: C 0.34-0.39, Si 0.20-0.3 5, Mn 1.25-1.50, Al 0.06-0.09, S<0.010, P<0.015,0<Cr<0.20,0<Ni<0.20,0<Cu<0.20; Unit is a mass percent; During production, sleeve pipe adopts quenching+tempered thermal treatment process, and quenchant is a water, and quenching temperature is 860 ℃ ± 10 ℃, and tempering temperature is more than 500 ℃; The telescopic geometric accuracy satisfies following requirement: external diameter tolerance 0~+ 1.0%, wall thickness tolerance 0~15%, external diameter out of roundness≤0.50%, eccentricity≤15%.
2, a kind of high anti-extrusion petroleum casing pipe as claimed in claim 1 is characterized in that: after the sleeve pipe thermal treatment, need through straightening processing, aligning adopts caloric rectifing mode, and the hot straightening temperature is between 450 ℃~480 ℃.
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Families Citing this family (4)
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CN101886218B (en) * | 2009-05-16 | 2011-12-07 | 黑龙江建龙钢铁有限公司 | Steel making method of J55-grade 37Mn5 oil casing pipe |
CN101798654B (en) * | 2010-04-09 | 2011-06-22 | 中国石油天然气集团公司 | Steel used for straight seam electric resistance welding petroleum casing and casing manufacturing method |
CN102703838B (en) * | 2012-05-28 | 2014-01-22 | 无锡西姆莱斯石油专用管制造有限公司 | Production process for PSL-2 grade non-tempered N80 steel grade oil casing pipes |
CN109402527B (en) * | 2018-11-07 | 2021-02-23 | 林州凤宝管业有限公司 | Economical P110 steel-grade petroleum casing pipe and manufacturing method thereof |
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JP2000219915A (en) * | 1999-01-29 | 2000-08-08 | Sumitomo Metal Ind Ltd | Production of seamless steel pipe having high strength and high toughness |
CN1288071A (en) * | 2000-01-25 | 2001-03-21 | 天津钢管公司 | High strength petroleum annular tubes for prodn. of super visous crude thermal prodn. well |
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CN1391020A (en) * | 2001-06-07 | 2003-01-15 | 天津钢管公司 | Medium-strength sleeved petroleum pipe for hot recovery well of thick oil and its making method |
CN1391022A (en) * | 2001-06-07 | 2003-01-15 | 天津钢管公司 | Ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze and its making method |
JP2005008912A (en) * | 2003-06-16 | 2005-01-13 | Sumitomo Metal Ind Ltd | Oil well pipe for burying and pipe expanding |
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2005
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Patent Citations (8)
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JP2000219915A (en) * | 1999-01-29 | 2000-08-08 | Sumitomo Metal Ind Ltd | Production of seamless steel pipe having high strength and high toughness |
CN1288071A (en) * | 2000-01-25 | 2001-03-21 | 天津钢管公司 | High strength petroleum annular tubes for prodn. of super visous crude thermal prodn. well |
CN1361303A (en) * | 2000-12-29 | 2002-07-31 | 天津钢管公司 | TP65 steel level petroleum casing and its manufacture |
CN1361306A (en) * | 2000-12-29 | 2002-07-31 | 天津钢管公司 | Petroleum casing resisting stress corrosion of H2S and its production process |
CN1390972A (en) * | 2001-06-07 | 2003-01-15 | 天津钢管公司 | Ultrahigh-strength low-alloy steel |
CN1391020A (en) * | 2001-06-07 | 2003-01-15 | 天津钢管公司 | Medium-strength sleeved petroleum pipe for hot recovery well of thick oil and its making method |
CN1391022A (en) * | 2001-06-07 | 2003-01-15 | 天津钢管公司 | Ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze and its making method |
JP2005008912A (en) * | 2003-06-16 | 2005-01-13 | Sumitomo Metal Ind Ltd | Oil well pipe for burying and pipe expanding |
Non-Patent Citations (3)
Title |
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J55石油套管提高韧性贺细化晶粒的研究 贺景春 姜钧普 郭兆成等,钢铁,第4卷第35期 2000;国产石油套管与日本同类套管质量对比分析 李玉柱 卢小庆,天津冶金,第103卷 2001 * |
国产石油套管与日本同类套管质量对比分析 李玉柱 卢小庆,天津冶金,第103卷 2001 * |
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