CN105945517B - A kind of continuous velocity tubing string and its manufacture method - Google Patents

A kind of continuous velocity tubing string and its manufacture method Download PDF

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Publication number
CN105945517B
CN105945517B CN201610313230.2A CN201610313230A CN105945517B CN 105945517 B CN105945517 B CN 105945517B CN 201610313230 A CN201610313230 A CN 201610313230A CN 105945517 B CN105945517 B CN 105945517B
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tubing string
continuous velocity
steel band
velocity tubing
continuous
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CN201610313230.2A
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CN105945517A (en
Inventor
毕宗岳
张晓峰
余晗
张锦刚
鲜林云
李鸿斌
汪海涛
晁利宁
王维亮
付宏强
王璟丽
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China Petroleum and Natural Gas Co Ltd
Baoji Petroleum Steel Pipe Co Ltd
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Baoji Petroleum Steel Pipe Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables

Abstract

The invention discloses a kind of continuous velocity tubing string and its manufacture method, and according to percentage by weight, the steel chemical composition of the continuous velocity tubing string is：C：0.07~0.16, Si：0.2~0.45, Mn：0.5~0.85, P：≤ 0.02, S：≤ 0.002, Cr：0.52~0.9, Cu：0.1~0.4, Mo：≤ 0.22, Ni：≤ 0.3, V：≤ 0.05, Nb：0.02~0.04, surplus is iron；Raw material is made joint length and is more than 61 meters after slitting, docking, shaping welding, heat treatment, reaches as high as thousands of rice, the middle continuous velocity tubing string without thread connecting joint；Continuous velocity tubing string yield strength >=359MPa of the present invention, tensile strength >=455MPa, highest hardness 248HV0.5, there is preferable corrosion resistance, be adapted to the long service in oil/gas well.

Description

A kind of continuous velocity tubing string and its manufacture method
Technical field：
The present invention relates to petroleum gas tubing technical field, and in particular to a kind of continuous velocity tubing string and its manufacturer Method.
Background technology：
The fine and close gas fields such as long celebrating Su Lige are after gas well operation, and with the continuity of production time, stratum energy gradually reduces, Gas pressure declines, and gas well fluid-carrying capability gradually weakens, and pit shaft starts hydrops occur, and gas production declines, and gas can be caused when serious Well stop-spraying, stable yields are protected huge for pressure.
Well head will be hung on by special hanger in speed column tripping in oil pipe, by closing annular space or tubing string end, allowed Gas is inside speed column or annular space is by being to solve gas well plug-ging to reach throttling speedup, improve gas well drainage capacity The effective way of problem.Previously used speed column is conventional oil pipe, and 10 meters or so of joint length, is connected using nipple more It is connected to required length.Conventional speeds tubing string uses common low carbon seamless steel pipe, adds after pipeline section carries out upset thickening and heat treatment Work goes out screw thread, and screw thread is connected with box cupling, is fitted close after tightening by step surface between metal to realize sealing and the connection of oil pipe To required length.
Water pumping gas production operation is carried out using conventional speeds tubing string to have the disadvantage that：First, connector is more, and quality is difficult to ensure that, Security is poor.Exemplified by being applied in the well in depth 3000m, connected using nipple, a screw thread more than 300 can be produced and connect Head, any one joint quality is unqualified may all to make tubing string come off, and trigger down-hole accident, cause heavy losses, and speed pipe Speed column need to be placed in well by column water pumping gas production operation for a long time, be subjected to the erosion of corrosive medium, and conventional speeds tubing string is general Logical low-carbon steel material, for corrosive nature general, it is hard to carry out long-term continuous military service, it is rotten especially easily to produce gap in joint (crevice corrosion is to form micro gap in media as well between metal parts, is caused since corrosive medium diffusion is uneven for erosion The inside and outside formation concentration difference in gap, composition concentration potential is poor, makes metal that local corrosion occur), easily cause speed pipe Column leakage failure.2nd, operating efficiency is relatively low.Conventional speeds tubing string joint length is limited, it is necessary to tripping in after spreading, operating personnel More, the construction time is longer.
Therefore, it is necessary to research and develop a kind of continuous velocity tubing string being adapted in underground long service.The present invention is using anti-corrosion Joint length is made up to thousands of meters of continuous velocity tubing string in material, quick for installation, and is adapted to the long service in oil/gas well, into Row water pumping gas production operation.
The content of the invention：
In order to overcome above-mentioned technical problem, it is adapted to it is an object of the invention to provide a kind of in the continuous of underground long service Speed column, continuous velocity tubing string excellent corrosion-proof performance of the invention, joint length are high up to thousands of rice, operating efficiency；This hair It is bright to additionally provide a kind of manufacture method of continuous velocity tubing string.
In order to solve the above-mentioned technical problem, the present invention adopts the technical scheme that：A kind of continuous velocity tubing string, according to weight Percentage, the steel chemical composition of the tubing string are：C：0.07~0.16, Si：0.2~0.45, Mn：0.5~0.85, P：≤ 0.02, S：≤ 0.002, Cr：0.52~0.9, Cu：0.1~0.4, Mo：≤ 0.22, Ni：≤ 0.3, V：≤ 0.05, Nb：0.02~ 0.04, surplus is iron.
Above-mentioned continuous velocity tubing string outside diameter is 25.4~88.9mm, and wall thickness is 1.9~7.6mm, yield strength >=359MPa, Tensile strength >=455MPa, highest hardness 248HV0.5。
Above-mentioned continuous velocity tubing string joint length >=61m, reaches as high as thousands of rice, and centre does not have thread connecting joint.
The manufacture method for manufacturing above-mentioned continuous velocity tubing string is：Specific manufacturing step is as follows:
Step 1：Chemical composition is subjected to melting, is forged into slab；
Step 2：Slab is rolled, concrete technology is as follows：
Using TMCP techniques, by the heating of plate blank of mentioned component to 980~1250 DEG C when carries out roughing, 690 DEG C~900 DEG C carry out finish rolling；380~600 DEG C of coiling temperature, is eventually fabricated the coil of strip of 1.9~7.6mm of thickness；
Step 3：By coil of strip slitting into steel band, the spreading of steel band is realized
Adjacent steel band end is cut off by certain angle, rational welding groove is processed into according to thickness of strips, Steel band is welded using Plasma Welding or argon arc welding, agitating friction weldering and other welding methods.It is attached to clear up butt weld After nearly welding slag, weld seam is carried out to roll postcooling after butt weld and heat affected area to be heated to certain temperature, so as to fulfill The spreading of steel band；
Step 4：Continuous velocity tubing string is made in steel band after spreading
By the steel band after spreading by row-roll forming process after, welded using ratio-frequency welding.880 DEG C~960 are carried out to weld seam DEG C heat treatment, then carries out full tube body 600 DEG C~770 DEG C destressings processing.
Step 5：Corrosion resisting property detection is carried out to continuous velocity tubing string.
The steel performance of coil of strip in above-mentioned steps 2：300~650MPa of yield strength, tensile strength >=420MPa, elongation percentage More than 20%, highest hardness 240HV0.5, grain size is in more than E112NO.8 grades of ASTM, banded structure≤2 grade.
The method that steel band welding uses in above-mentioned steps 3 is Plasma Welding.
Beneficial effects of the present invention：
1st, it is complete by low-carbon Cu-Mo-Cr-Ni alloy system composition designs, innovation on the premise of mechanical properties of tubular goods is met Flow ultra-clean degree smelting process, sets about improving the corrosion resistance of tubing itself from steel control.Meanwhile by steel band docking and Postwelding rolls heat treatment process, obtains the steel band banjo fixing butt jointing of good quality, realizes the spreading of steel band.And pass through ratio-frequency welding (HFW) and special subsequent heat treatment technique excellent corrosion-proof performance, joint length, are produced up to thousands of meters of continuous velocity pipe Column product.
2nd, continuous velocity tubing string of the invention does not have thread connecting joint, and joint length >=61m, reaches as high as thousands of rice, It is more to solve conventional speeds tubing string nipple, and nipple is also easy to produce the problem that crevice corrosion causes tubing string to come off； When carrying out water pumping gas production operation, without making up a joint, pole can be obtained by the continuous direct G.I.H of pipe implement, operating efficiency Big raising.
3rd, by carrying out corrosion resisting property detection, continuous velocity tubing string of the invention and routine to continuous velocity tubing string of the present invention Low-carbon seamless steel pipe speed column more disclosure satisfy that the requirement of long service in well compared to having excellent corrosion resisting property.
Embodiment：
1) roll bending of following component is devised：
1120 × 3.18mm specifications, weight 20t will be become using the steel rolling of mentioned component design, are about the coil of strip of 680m.
The steel main performance：Yield strength 465MPa, tensile strength 540MPa, elongation percentage 27%, hardness 218HV0.5。 Grain size is in E112NO.10 grades of ASTM, 1.0 grades of banded structure.
2) 9 steel bands by the coil of strip slitting into width 120.2mm.Steel band is butted into the steel band of 6120 meters of overall length.Profit With the steel pipe that row-roll forming process is Φ 38.1 × 3.18mm specifications, a disk is obtained after weld seam is heat-treated, full tube body destressing is handled 3500 meters long continuous velocity tubing string product.
The main performance of the continuous pipe：Yield strength is 520MPa, tensile strength 600MPa, highest hardness 227HV0.5。
Tested according to American Society of Corrosion Engineers NACE standards TM0284-2003, this experiment is removed using High Purity Nitrogen Oxygen, etchant solution are 0.5% acetic acid+5%NaCl mixed solutions of hydrogen sulfide saturation, etchant solution distilled water and the pure examination of chemistry Agent is prepared.Liquor capacity and Area of Sample ratio are more than 3mL/cm2, solution temperature is maintained at 25 ± 3 DEG C.By 96 experiments when small Afterwards, sample cleaned, observed, produced without crackle and bubbling.
According to American Society of Corrosion Engineers standard NACE TM 0177-1996《Metal material is containing H2Sulfur resistive in S environment Compound stress corrosion cracking method for testing performance》(it is equivalent to People's Republic of China (PRC) standard GB/T 4157-2006《Metal is in sulphur Change hydrogen environment moderate resistance special shape environmental cracking laboratory test》) tested, load mode uses static stretch method, to examination Sample applies the tensile stress that numerical value is 535MPa yield pressures, and etchant solution is solution A (hydrogen sulfide saturation specified in standard 5%NaCl+0.5% glacial acetic acids aqueous solution).It is unbroken by 720 stress etching experiments when small, sample.
Water pumping gas production operation is carried out in certain oil field gas well, continuous military service rises out after 3 years and is detected：Loss of strength is not More than 7%；Wall thickness corrosion condition is measured using laser co-focusing equipment, is extrapolated by measurement result, the disk is continuous Maximum corrosion rate of the speed column in military service gas well is 0.114mm/a, still meets to continue the mechanical property requirements being on active service.
Above content is that a further detailed description of the present invention in conjunction with specific preferred embodiments, it is impossible to is assert The embodiment of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off On the premise of from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention by institute Claims of submission determine scope of patent protection.

Claims (1)

  1. A kind of 1. manufacture method of continuous velocity tubing string, it is characterised in that：According to percentage by weight, the continuous velocity tubing string Steel chemical composition is：C：0.07~0.16, Si：0.2~0.45, Mn：0.5~0.85, P：≤ 0.02, S：≤ 0.002, Cr： 0.52~0.9, Cu：0.1~0.4, Mo：≤ 0.22, Ni：≤ 0.3, V：≤ 0.05, Nb：0.02~0.04, surplus is iron；Specifically Manufacturing step is as follows：
    Step 1：Chemical composition is subjected to melting, is forged into slab；
    Step 2：Slab is rolled, concrete technology is as follows：
    Using TMCP techniques, by the heating of plate blank of mentioned component to 980~1250 DEG C when carries out roughing, 690 DEG C~900 DEG C into Row finish rolling, 380 DEG C~600 DEG C of coiling temperature, is eventually fabricated the coil of strip of 1.9~7.6mm of thickness；The steel of coil of strip in the step 2 Material performance：300~650MPa of yield strength, tensile strength >=420MPa, elongation percentage are more than 20%, highest hardness 240HV0.5, it is brilliant Granularity is in more than E112NO.8 grades of ASTM, banded structure≤2 grade；
    Step 3：By coil of strip slitting into steel band, the spreading of steel band is realized
    Adjacent steel band end is cut off by certain angle, rational welding groove is processed into according to thickness of strips, is used Plasma Welding or argon arc welding, agitating friction weldering and other welding methods weld steel band；Butt weld is cleared up nearby to weld After slag, weld seam is carried out to roll postcooling after butt weld and heat affected area to be heated to certain temperature, so as to fulfill steel band Spreading；
    Step 4：Continuous velocity tubing string is made in steel band after spreading
    By the steel band after spreading by row-roll forming process after, welded using ratio-frequency welding, to weld seam carry out 880 DEG C~960 DEG C heat Processing, then carries out full tube body 600 DEG C~770 DEG C destressing processing；
    Step 5：Corrosion resisting property detection is carried out to continuous velocity tubing string；The outside diameter of the continuous velocity tubing string for 25.4~ 88.9mm, wall thickness are 1.9~7.6mm, yield strength >=359MPa, tensile strength >=455MPa, highest hardness 248HV0.5；Institute Joint length >=61m of continuous velocity tubing string is stated, reaches as high as thousands of rice, centre does not have thread connecting joint；The continuous speed Degree tubing string carries out water pumping gas production operation in the gas well of oil field, and loss of strength is no more than 7% after being continuously on active service 3 years；It is total to using laser Focus set measures wall thickness corrosion condition, and maximum corrosion rate of the continuous velocity tubing string in military service gas well is 0.114mm/a。
CN201610313230.2A 2016-05-12 2016-05-12 A kind of continuous velocity tubing string and its manufacture method Active CN105945517B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115679199A (en) * 2021-07-30 2023-02-03 宝山钢铁股份有限公司 Steel for continuous speed pipe column, hot-rolled steel strip, steel pipe and manufacturing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101898295A (en) * 2010-08-12 2010-12-01 中国石油天然气集团公司 Manufacturing method of high-strength and high-plasticity continuous tube
EP2383065A2 (en) * 2010-04-30 2011-11-02 DFI Corporation Dual seam electric resistance welded tubes
CN202300215U (en) * 2011-07-22 2012-07-04 宝鸡石油钢管有限责任公司 Large-specification low-carbon micro-alloy steel continuous oil pipe
CN104651591A (en) * 2014-11-21 2015-05-27 宝鸡石油钢管有限责任公司 High-strength low-hardness continuous oil pipe and preparation method thereof
CN105177453A (en) * 2015-09-25 2015-12-23 宝鸡石油钢管有限责任公司 High-strength and high-performance coiled tubing and manufacturing method thereof
CN105458633A (en) * 2016-01-06 2016-04-06 河北华通线缆集团股份有限公司 Manufacturing method of low-carbon steel coiled tubing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2383065A2 (en) * 2010-04-30 2011-11-02 DFI Corporation Dual seam electric resistance welded tubes
CN101898295A (en) * 2010-08-12 2010-12-01 中国石油天然气集团公司 Manufacturing method of high-strength and high-plasticity continuous tube
CN202300215U (en) * 2011-07-22 2012-07-04 宝鸡石油钢管有限责任公司 Large-specification low-carbon micro-alloy steel continuous oil pipe
CN104651591A (en) * 2014-11-21 2015-05-27 宝鸡石油钢管有限责任公司 High-strength low-hardness continuous oil pipe and preparation method thereof
CN105177453A (en) * 2015-09-25 2015-12-23 宝鸡石油钢管有限责任公司 High-strength and high-performance coiled tubing and manufacturing method thereof
CN105458633A (en) * 2016-01-06 2016-04-06 河北华通线缆集团股份有限公司 Manufacturing method of low-carbon steel coiled tubing

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Effective date of registration: 20181016

Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing

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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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