CN115772617B - Nickel-based alloy coiled tubing for underground complex environment and manufacturing method - Google Patents
Nickel-based alloy coiled tubing for underground complex environment and manufacturing method Download PDFInfo
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 86
- 239000000956 alloy Substances 0.000 title claims abstract description 86
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 229910052729 chemical element Inorganic materials 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 26
- 210000001503 joint Anatomy 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000005498 polishing Methods 0.000 claims description 16
- 229910052786 argon Inorganic materials 0.000 claims description 13
- 238000000137 annealing Methods 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000006104 solid solution Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000005242 forging Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005098 hot rolling Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 210000001787 dendrite Anatomy 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 3
- 230000002706 hydrostatic effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000009659 non-destructive testing Methods 0.000 claims description 3
- 238000005204 segregation Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 238000009785 tube rolling Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003209 petroleum derivative Substances 0.000 abstract description 2
- -1 high temperature Chemical compound 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 29
- 238000005260 corrosion Methods 0.000 description 29
- 230000000694 effects Effects 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
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- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of petroleum and natural gas pipelines, in particular to a nickel-based alloy coiled tubing for underground complex environments and a manufacturing method thereof. The nickel-based alloy coiled tubing for the underground complex environment comprises the following chemical element components in percentage by weight: cr: 21-24%; co: 10-15%; mo:8-10%; mn: less than or equal to 0.5 percent, ti:0.35 to 0.4 percent; al:0.8 to 1.5 percent; fe: less than or equal to 3.0 percent; si:0.11 to 0.5 percent; c is less than or equal to 0.005%; b is less than or equal to 0.11 percent, and the balance is nickel. The coiled tubing has the outer diameter of 25.4-88.9 mm, the wall thickness of 3.0-6.5 mm, the length of greater than 61m, the yield strength of greater than 303MPa, the tensile strength of greater than 774MPa, and the elongation of more than or equal to 35%, and can be normally used in complex environments containing oxygen, high temperature, hydrogen sulfide, various corrosive mediums and the like in the pit.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas pipelines, in particular to a nickel-based alloy coiled tubing for underground complex environments and a manufacturing method thereof.
Background
The coiled tubing is a petroleum tubing which is applicable to the aspects of oil and gas field well repair, well logging, well drilling and the like and has the advantages of high efficiency, low operation cost, wide operation range, small occupied area and the like.
Along with the continuous development of oil gas resources, oil gas fields such as high temperature, high pressure, corrosion resistance, unconventional oil gas resources and the like are gradually becoming the main direction of oil gas field development, but the continuous oil pipes applied to various complex working conditions at present do not exist, a deep coal seam gasification cavity simultaneously has corrosion environments such as high temperature, acid, oxygen and the like, the continuous oil pipe is required to have high temperature mechanical property requirements, and the continuous oil pipe is required to have the working capacity of complex working conditions, and in the oil gas development, the continuous oil pipe with better corrosion resistance is provided with a titanium alloy continuous oil pipe which has high temperature resistance and corrosion resistance, but in a hydrofluoric acid environment, the continuous oil pipe can be corroded to be damaged at extremely high speed; the CN 1089420103A is a nickel-base alloy steel continuous oil, which belongs to the most basic nickel-base alloy, has corrosion resistance limited to the condition of no oxygen or oxidant, and in the petroleum development and coal underground gasification development process, the oxidant is inevitably required to be injected into the pipe, oxygen drives foam and oxygen-carrying operation, the most basic substances in the oil gas product cannot be thick to encounter corrosive media such as hydrogen sulfide in oxygen environment, and the titanium alloy continuous oil pipe has high price along with the price, but can not solve the problem of hydrogen sulfide corrosion, so that the novel product of the continuous oil pipe suitable for complex environment is developed, and the problem of service of the continuous oil pipe in the complex environment such as oxygen-containing, high temperature and hydrogen sulfide is solved.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a nickel-based alloy coiled tubing for underground complex environments and a manufacturing method thereof, wherein the coiled tubing is manufactured by adopting high-performance Ni-Cr-Mo alloy, can be used in high-temperature environments, can be used in environments with high temperature, oxygen and various corrosive mediums, and solves the problem of underground complex environment operation faced by the coiled tubing.
The technical scheme of the invention is as follows: a nickel-based alloy coiled tubing for a complex downhole environment comprises the following chemical element components in percentage by weight: cr: 21-24%; co: 10-15%; mo:8-10%; mn: less than or equal to 0.5 percent, ti:0.35 to 0.4 percent; al:0.8 to 1.5 percent; fe: less than or equal to 3.0 percent; si:0.11 to 0.5 percent; c is less than or equal to 0.005%; b is less than or equal to 0.11 percent, and the balance is nickel.
The outer diameter of the coiled tubing is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is greater than 61m, the yield strength is greater than 303MPa, the tensile strength is greater than 774MPa, and the elongation is more than or equal to 35%.
The chemical components of the nickel-based alloy coiled tubing used for the underground complex environment are selected according to the following steps: wherein Cr imparts corrosion resistance to Ni under oxidation conditions and oxidation and vulcanization resistance at high temperatures, and Co improves toughness and formability of the alloy while enhancing the solid solution strengthening effect. Co can form (Ni, co) 3 (Al, ti), so that the solubility of Al and Ti in a matrix is reduced, the solid solution temperature of gamma' phase is increased, and further, the precipitation of carbide at a crystal boundary is reduced, thereby reducing the width of a chromium-poor region at the crystal boundary and increasing the number of strengthening phases in the alloy. Mo and W obviously improve the corrosion resistance of Ni in reducing acid, cr and Mo are added to improve the corrosion resistance of Ni in oxidizing medium and reducing medium, ti, al and other elements, and gamma' -Ni3 (Ti, al) strengthening phase can be separated out in the aging process, so that excellent toughening effect is obtained.
The manufacturing method of the nickel-based alloy coiled tubing for the underground complex environment comprises the following steps of:
s1: the method for manufacturing the coiled tubing nickel-based alloy plate comprises the following specific steps:
s11: preparing ingot casting raw materials according to the weight percentages of the chemical element components of the continuous oil pipe, and smelting the ingot casting raw materials by adopting a duplex process of vacuum induction smelting VIM and protective atmosphere electroslag remelting ESR to form an ingot casting;
s12: polishing the surface of an ingot to remove oxide skin, heating the ingot to 1200 ℃ for cogging forging, and carrying out multi-pass hot rolling to obtain a coiled tubing nickel-base alloy plate;
s13: rough rolling and finish rolling are carried out at the temperature of 1100-1200 ℃ to obtain a hot rolled plate with the width of 1000-1200 mm and the thickness of 1.5-6.5 mm, and solution heat treatment is carried out for 2-3 hours at the temperature of 1190-1210 ℃ by adopting a muffle furnace to obtain the coiled plate of the coiled tubing nickel base alloy;
s2: longitudinally shearing the coiled tubing nickel-base alloy plate obtained in the step S1 into a coiled tubing nickel-base alloy belt with a certain width according to the size of the coiled tubing to be manufactured, chamfering two sides of the coiled tubing nickel-base alloy belt into an angle A with the range of 0-90 degrees, machining a tangential plane into an I-shaped groove or a V-shaped groove, grinding the tangential plane, accurately splicing the front nickel-base alloy plate and the rear nickel-base alloy plate along the angle A, installing arc leading plates and arc extinguishing plates on two sides of a splicing position of the tangential plane in a gas shielded welding manner, polishing a butt joint, cleaning surface oxide skin, performing small heat input welding by adopting one welding method of a vacuum laser machine, argon shielded arc welding and submerged arc welding, and cleaning welding slag by adopting grinding after welding;
s3: after the butt joint is completed, removing surface welding slag after the welding line is completely cooled, polishing and preheating the butt joint part after the welding slag is cleaned, removing surface foreign matters, placing the butt joint into a vacuum cavity, vacuumizing the cavity, heating the welding line and a heat affected zone thereof to 1190-1210 ℃ in a vacuum environment, carrying out solid solution on the butt joint after heat preservation for 60s, carrying out annealing at 1140-1200 ℃ for 30s, and carrying out flaw detection on the butt joint by adopting a vortex flow and ultrasonic flaw detection mode after the heat treatment is completed;
s4: s2, butt joint is carried out for a plurality of times to enable the length of the nickel-based alloy belt to reach the required length, two sides of the nickel-based alloy belt are processed into I-shaped grooves, the nickel-based alloy belt is preheated and edge polished, argon protection laser welding technology and argon purity are adopted, the argon purity is more than or equal to 99.7%, submerged arc welding technology is adopted to carry out continuous welding of pipe blanks, a scraper or polishing method is adopted to carry out outer burr removal of welding seams, and the nickel-based alloy coiled pipe with the pipe diameter of phi 12.7-phi 88.9mm and the wall thickness of 1.5-6.4 mm is obtained through welding;
s5: carrying out solid solution treatment and annealing treatment on the nickel-base alloy coiled tubing obtained in the step S4 by adopting an intermediate frequency induction heating mode, carrying out whole tube rolling on the nickel-base alloy coiled tubing after heat treatment at the temperature of 1190-1210 ℃ and heat preservation for 60-90 seconds, cooling the rolled nickel-base alloy coiled tubing, and then carrying out heat preservation for 20-30 seconds at the temperature of 1140-1200 ℃ for annealing;
s6: and (3) winding the nickel-base alloy coiled tubing processed in the step (S5) onto a production reel with a large core diameter through a coiling machine, then rewinding the production reel onto a transportation reel, and carrying out nondestructive testing and hydrostatic pressure testing to finally obtain the nickel-base alloy coiled tubing.
In the step S11, the obtained ingot is subjected to homogenization treatment at 1210 ℃ for 48 hours so as to eliminate dendrites and element segregation of the ingot and dissolve part of carbide in the crystal.
And S4, polishing and preheating the nickel-base alloy strip edge of the continuous oil pipe by fixing blades with corresponding specifications at the inlet and outlet positions of the muffle furnace, wherein the preheating temperature is 25-30 ℃.
The invention has the beneficial effects that:
1. the nickel-based alloy coiled tubing manufactured by the method has the outer diameter of 25.4-88.9 mm, the wall thickness of 3.0-6.5 mm, the length of more than 61m, the yield strength of more than 303MPa, the tensile strength of more than 774MPa and the elongation of more than or equal to 35%;2. according to the invention, the vacuum cavity is adopted to carry out solid solution, rolling and annealing process treatment on the nickel-based alloy continuous oil pipe butt joint, so that the weld grain size is thinned, and the stability of a weld joint structure is ensured; 3. the invention carries out integral deformation on the continuous pipe through multiple times of rolling, the integral deformation not only increases the roundness of the pipe and has the effect of straightening, but also refines the grain size of the welding seam, thereby obtaining the welding structure with uniform structure, eliminating the internal stress caused by rolling after the annealing treatment and prolonging the service life of the continuous oil pipe.
Detailed Description
The invention is described in further detail below with reference to examples:
example 1
A nickel-based alloy coiled tubing for a complex downhole environment comprises the following chemical element components in percentage by weight: cr: 21-24%; co: 10-15%; mo:8-10%; mn: less than or equal to 0.5 percent, ti:0.35 to 0.4 percent; al:0.8 to 1.5 percent; fe: less than or equal to 3.0 percent; si:0.11 to 0.5 percent; c is less than or equal to 0.005%; b is less than or equal to 0.11 percent, and the balance is nickel.
The outer diameter of the coiled tubing is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is greater than 61m, the yield strength is greater than 303MPa, the tensile strength is greater than 774MPa, and the elongation is more than or equal to 35%.
In the practical use process, the corrosion resistance of Ni under the oxidation condition and the oxidation resistance and vulcanization resistance of Co under the high temperature are endowed by Cr, so that the toughness, plasticity and hot forming property of the alloy are improved while the solid solution strengthening effect of Co is enhanced. Co can form (Ni, co) 3 (Al, ti), so that the solubility of Al and Ti in a matrix is reduced, the solid solution temperature of gamma' phase is increased, and further, the precipitation of carbide at a crystal boundary is reduced, thereby reducing the width of a chromium-poor region at the crystal boundary and increasing the number of strengthening phases in the alloy. Mo and W obviously improve the corrosion resistance of Ni in reducing acid, cr and Mo are added to improve the corrosion resistance of Ni in oxidizing medium and reducing medium, ti, al and other elements, and gamma' -Ni3 (Ti, al) strengthening phase can be separated out in the aging process, so that excellent toughening effect is obtained.
Example 2
A method of manufacturing a nickel-based alloy coiled tubing for use in a complex downhole environment, comprising the steps of:
s1: the method for manufacturing the coiled tubing nickel-based alloy plate comprises the following specific steps:
s11: preparing ingot casting raw materials according to the weight percentages of the chemical element components of the continuous oil pipe, and smelting the ingot casting raw materials by adopting a duplex process of vacuum induction smelting VIM and protective atmosphere electroslag remelting ESR to form an ingot casting;
s12: polishing the surface of an ingot to remove oxide skin, heating the ingot to 1200 ℃ for cogging forging, and carrying out multi-pass hot rolling to obtain a coiled tubing nickel-base alloy plate;
s13: rough rolling and finish rolling are carried out at the temperature of 1100-1200 ℃ to obtain a hot rolled plate with the width of 1000-1200 mm and the thickness of 1.5-6.5 mm, and solution heat treatment is carried out for 2-3 hours at the temperature of 1190-1210 ℃ by adopting a muffle furnace to obtain the coiled plate of the coiled tubing nickel base alloy;
s2: longitudinally shearing the coiled tubing nickel-base alloy plate obtained in the step S1 into a coiled tubing nickel-base alloy belt with a certain width according to the size of the coiled tubing to be manufactured, chamfering two sides of the coiled tubing nickel-base alloy belt into an angle A with the range of 0-90 degrees, machining a tangential plane into an I-shaped groove or a V-shaped groove, grinding the tangential plane, accurately splicing the front nickel-base alloy plate and the rear nickel-base alloy plate along the angle A, installing arc leading plates and arc extinguishing plates on two sides of a splicing position of the tangential plane in a gas shielded welding manner, polishing a butt joint, cleaning surface oxide skin, performing small heat input welding by adopting one welding method of a vacuum laser machine, argon shielded arc welding and submerged arc welding, and cleaning welding slag by adopting grinding after welding;
s3: after the butt joint is completed, removing surface welding slag after the welding line is completely cooled, polishing and preheating the butt joint part after the welding slag is cleaned, removing surface foreign matters, placing the butt joint into a vacuum cavity, vacuumizing the cavity, heating the welding line and a heat affected zone thereof to 1190-1210 ℃ in a vacuum environment, carrying out solid solution on the butt joint after heat preservation for 60s, carrying out annealing at 1140-1200 ℃ for 30s, and carrying out flaw detection on the butt joint by adopting a vortex flow and ultrasonic flaw detection mode after the heat treatment is completed;
s4: s2, butt joint is carried out for a plurality of times to enable the length of the nickel-based alloy belt to reach the required length, two sides of the nickel-based alloy belt are processed into I-shaped grooves, the nickel-based alloy belt is preheated and edge polished, argon protection laser welding technology and argon purity are adopted, the argon purity is more than or equal to 99.7%, submerged arc welding technology is adopted to carry out continuous welding of pipe blanks, a scraper or polishing method is adopted to carry out outer burr removal of welding seams, and the nickel-based alloy coiled pipe with the pipe diameter of phi 12.7-phi 88.9mm and the wall thickness of 1.5-6.4 mm is obtained through welding;
s5: carrying out solid solution treatment and annealing treatment on the nickel-base alloy coiled tubing obtained in the step S4 by adopting an intermediate frequency induction heating mode, carrying out whole tube rolling on the nickel-base alloy coiled tubing after heat treatment at the temperature of 1190-1210 ℃ and heat preservation for 60-90 seconds, cooling the rolled nickel-base alloy coiled tubing, and then carrying out heat preservation for 20-30 seconds at the temperature of 1140-1200 ℃ for annealing;
s6: and (3) winding the nickel-base alloy coiled tubing processed in the step (S5) onto a production reel with a large core diameter through a coiling machine, then rewinding the production reel onto a transportation reel, and carrying out nondestructive testing and hydrostatic pressure testing to finally obtain the nickel-base alloy coiled tubing.
In the step S11, the obtained ingot is subjected to homogenization treatment at 1210 ℃ for 48 hours so as to eliminate dendrites and element segregation of the ingot and dissolve part of carbide in the crystal.
And S4, polishing and preheating the nickel-base alloy strip edge of the continuous oil pipe by fixing blades with corresponding specifications at the inlet and outlet positions of the muffle furnace, wherein the preheating temperature is 25-30 ℃.
Example 3
A nickel-based alloy coiled tubing for a complex downhole environment is specifically manufactured by the following steps:
s1: the method for manufacturing the coiled tubing nickel-based alloy plate comprises the following specific steps:
according to the chemical element composition weight percentage of the coiled tubing in the embodiment 1, specifically, the chemical element composition of the coiled tubing is as follows: cr:22.17%; 10.00% of Co; mo 9.22%; mn 0.028%; ti:0.38%; al:1.2%; si:0.11 to 0.5 percent; c is less than or equal to 0.005%; b is less than or equal to 0.11 percent, ingot casting raw materials are prepared, and a duplex process of vacuum induction melting VIM and protective atmosphere electroslag remelting ESR is adopted for smelting into ingot casting; polishing the surface of an ingot to remove oxide skin, heating the ingot to 1200 ℃ to perform cogging forging, and performing forging and multi-pass hot rolling to obtain a coiled nickel-base alloy plate of a coiled tubing of 660 multiplied by 3.18 mm;
s2: the cast ingot is made into a nickel-based alloy coiled plate through forging and blank rolling processes, and is longitudinally sheared into coiled tubing coiled plate strips with the specification of phi 38.1 multiplied by 3.18 mm; beveling two ends of the longitudinally sheared nickel-base alloy belt at 45 degrees, welding by adopting a vacuum laser welding method, and cooling the nickel-base alloy belt by adopting an inert gas extreme cooling mode;
s3: lengthening the nickel-based alloy belt to 3000m, and carrying out continuous crimping welding forming on the nickel-based alloy belt with the edge ground and preheated;
s4: the welding is completed in an argon protection environment by adopting a laser welding method, and a water cooling mode is used for rapidly cooling a welding line;
s5: heating the welded tube blank to 1190 ℃ by adopting an intermediate frequency induction heating method, preserving heat for 60s, cooling with water, carrying out rolling deformation under a certain pressure on the whole tube, and preserving heat for 30s at 1200 ℃ for annealing treatment;
s6: the annealed tubing was wound on a roll with a core diameter of 1219.2 mm.
Through tests, the tensile yield strength of the whole coiled tubing is 350MPa, the tensile strength is 840Pa, and the elongation is 45%.
TABLE 1 Corrosion resistance test results
TABLE 2 comparison of oxygen Corrosion resistance rates for different periods
TABLE 3 corrosion resistance to 20% HCl+5% organic acid at different temperatures comparison
From tables 1-3, the nickel-based alloy coiled tubing for the underground complex environment produced by the method has excellent mechanical properties; the corrosion resistance to intergranular corrosion, hydrogen induced cracking, magnesium chloride stress corrosion and oxygen stress corrosion is excellent; table 1 shows that the continuous pipe has excellent performances of hydrogen sulfide stress corrosion cracking resistance, calcium chloride stress corrosion cracking resistance and copper sulfate stress corrosion cracking resistance; table 2 shows that the corrosion rate of the high-temperature high-pressure kettle under the simulated working condition is obviously superior to that of the 316L austenitic stainless steel and the 2205 duplex stainless steel in the 80 ℃ oxygen corrosion resistance performance, and the pitting corrosion hardly occurs; table 3 shows that the working condition is a typical injection working condition in continuous pipe operation, compared with austenitic stainless steel BG2532 with high chromium content, the corrosion resistance to hydrochloric acid and organic acid is higher, and the corrosion rate is greatly reduced. In conclusion, the nickel-based alloy continuous pipe for the underground complex environment, which is produced by the invention, can resist various complex environment corrosion and has good corrosion resistance effect.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (4)
1. A manufacturing method of a nickel-based alloy coiled tubing for a complex downhole environment is characterized by comprising the following steps of: the chemical element components of the continuous oil pipe are as follows by weight percent: cr: 21-24%; co: 10-15%; mo:8-10%; mn: less than or equal to 0.5 percent, ti:0.35 to 0.4 percent; al:0.8 to 1.5 percent; fe: less than or equal to 3.0 percent; si:0.11 to 0.5 percent; c is less than or equal to 0.005%; b is less than or equal to 0.11 percent, and the balance is nickel, comprising the following steps:
s1: the method for manufacturing the coiled tubing nickel-based alloy plate comprises the following specific steps:
s11: preparing ingot casting raw materials according to the weight percentages of the chemical element components of the continuous oil pipe, and smelting the ingot casting raw materials by adopting a duplex process of vacuum induction smelting VIM and protective atmosphere electroslag remelting ESR to form an ingot casting;
s12: polishing the surface of an ingot to remove oxide skin, heating the ingot to 1200 ℃ for cogging forging, and carrying out multi-pass hot rolling to obtain a coiled tubing nickel-base alloy plate;
s13: rough rolling and finish rolling are carried out at the temperature of 1100-1200 ℃ to obtain a hot rolled plate with the width of 1000-1200 mm and the thickness of 1.5-6.5 mm, and solution heat treatment is carried out for 2-3 hours at the temperature of 1190-1210 ℃ by adopting a muffle furnace to obtain the coiled plate of the coiled tubing nickel base alloy;
s2: longitudinally shearing the coiled tubing nickel-base alloy plate obtained in the step S1 into a coiled tubing nickel-base alloy belt with a certain width according to the size of the coiled tubing to be manufactured, chamfering two sides of the coiled tubing nickel-base alloy belt into an angle A with the range of 0-90 degrees, machining a tangential plane into an I-shaped groove or a V-shaped groove, grinding the tangential plane, accurately splicing the front nickel-base alloy plate and the rear nickel-base alloy plate along the angle A, installing arc leading plates and arc extinguishing plates on two sides of a splicing position of the tangential plane in a gas shielded welding manner, polishing a butt joint, cleaning surface oxide skin, performing small heat input welding by adopting one welding method of a vacuum laser machine, argon shielded arc welding and submerged arc welding, and cleaning welding slag by adopting grinding after welding;
s3: after the butt joint is completed, removing surface welding slag after the welding line is completely cooled, polishing and preheating the butt joint part after the welding slag is cleaned, removing surface foreign matters, placing the butt joint into a vacuum cavity, vacuumizing the cavity, heating the welding line and a heat affected zone thereof to 1190-1210 ℃ in a vacuum environment, carrying out solid solution on the butt joint after heat preservation for 60s, carrying out annealing at 1140-1200 ℃ for 30s, and carrying out flaw detection on the butt joint by adopting a vortex flow and ultrasonic flaw detection mode after the heat treatment is completed;
s4: s2, butt joint is carried out for a plurality of times to enable the length of the nickel-based alloy belt to reach the required length, two sides of the nickel-based alloy belt are processed into I-shaped grooves, the nickel-based alloy belt is preheated and edge polished, argon protection laser welding technology and argon purity are adopted, the argon purity is more than or equal to 99.7%, submerged arc welding technology is adopted to carry out continuous welding of pipe blanks, a scraper or polishing method is adopted to carry out outer burr removal of welding seams, and the nickel-based alloy coiled pipe with the pipe diameter of phi 12.7-phi 88.9mm and the wall thickness of 1.5-6.4 mm is obtained through welding;
s5: carrying out solid solution treatment and annealing treatment on the nickel-base alloy coiled tubing obtained in the step S4 by adopting an intermediate frequency induction heating mode, carrying out whole tube rolling on the nickel-base alloy coiled tubing after heat treatment at the temperature of 1190-1210 ℃ and heat preservation for 60-90 seconds, cooling the rolled nickel-base alloy coiled tubing, and then carrying out heat preservation for 20-30 seconds at the temperature of 1140-1200 ℃ for annealing;
s6: and (3) winding the nickel-base alloy coiled tubing processed in the step (S5) onto a production reel with a large core diameter through a coiling machine, then rewinding the production reel onto a transportation reel, and carrying out nondestructive testing and hydrostatic pressure testing to finally obtain the nickel-base alloy coiled tubing.
2. The method for manufacturing the nickel-based alloy coiled tubing for a complex downhole environment according to claim 1, wherein the method comprises the following steps: the outer diameter of the coiled tubing is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is greater than 61m, the yield strength is greater than 303MPa, the tensile strength is greater than 774MPa, and the elongation is more than or equal to 35%.
3. The method for manufacturing the nickel-based alloy coiled tubing for a complex downhole environment according to claim 1, wherein the method comprises the following steps: in the step S11, the obtained ingot is subjected to homogenization treatment at 1210 ℃ for 48 hours so as to eliminate dendrites and element segregation of the ingot and dissolve part of carbide in the crystal.
4. The method for manufacturing the nickel-based alloy coiled tubing for a complex downhole environment according to claim 1, wherein the method comprises the following steps: and S4, polishing and preheating the nickel-base alloy strip edge of the continuous oil pipe by fixing blades with corresponding specifications at the inlet and outlet positions of the muffle furnace, wherein the preheating temperature is 25-30 ℃.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1191118A1 (en) * | 2000-09-13 | 2002-03-27 | Hitachi Metals, Ltd. | Manufacturing process of nickel-based alloy having improved high temperature sulfidation-corrosion resistance |
| CN103080346A (en) * | 2010-03-16 | 2013-05-01 | 蒂森克鲁普德国联合金属制造有限公司 | Nickel-chromium-cobalt-molybdenum alloy |
| CN111636013A (en) * | 2020-06-12 | 2020-09-08 | 江苏银环精密钢管有限公司 | Novel nickel-chromium-cobalt-molybdenum high-temperature alloy seamless tube for power station and manufacturing method |
| CN113088832A (en) * | 2021-03-26 | 2021-07-09 | 中国石油天然气集团有限公司 | Iron-nickel-based corrosion-resistant alloy continuous tube and manufacturing method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1191118A1 (en) * | 2000-09-13 | 2002-03-27 | Hitachi Metals, Ltd. | Manufacturing process of nickel-based alloy having improved high temperature sulfidation-corrosion resistance |
| CN103080346A (en) * | 2010-03-16 | 2013-05-01 | 蒂森克鲁普德国联合金属制造有限公司 | Nickel-chromium-cobalt-molybdenum alloy |
| CN111636013A (en) * | 2020-06-12 | 2020-09-08 | 江苏银环精密钢管有限公司 | Novel nickel-chromium-cobalt-molybdenum high-temperature alloy seamless tube for power station and manufacturing method |
| CN113088832A (en) * | 2021-03-26 | 2021-07-09 | 中国石油天然气集团有限公司 | Iron-nickel-based corrosion-resistant alloy continuous tube and manufacturing method thereof |
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