CN115772617A - Nickel-based alloy continuous oil pipe for underground complex environment and manufacturing method - Google Patents
Nickel-based alloy continuous oil pipe for underground complex environment and manufacturing method Download PDFInfo
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- CN115772617A CN115772617A CN202111041382.9A CN202111041382A CN115772617A CN 115772617 A CN115772617 A CN 115772617A CN 202111041382 A CN202111041382 A CN 202111041382A CN 115772617 A CN115772617 A CN 115772617A
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 180
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 88
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 86
- 239000000956 alloy Substances 0.000 title claims abstract description 86
- 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 49
- 238000000034 method Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 21
- 210000001503 joint Anatomy 0.000 claims description 21
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000005498 polishing Methods 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 12
- 238000000137 annealing Methods 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000005242 forging Methods 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 9
- 239000006104 solid solution Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000010485 coping Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 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
- 238000009659 non-destructive testing Methods 0.000 claims description 3
- 238000005204 segregation Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 238000009785 tube rolling Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 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 28
- 238000005260 corrosion Methods 0.000 description 28
- 238000005728 strengthening Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 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
- 230000032683 aging Effects 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 229910052804 chromium 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
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 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
- 229910018054 Ni-Cu Inorganic materials 0.000 description 1
- 229910018481 Ni—Cu Inorganic materials 0.000 description 1
- 229910000831 Steel 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
- 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
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 238000004073 vulcanization 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)
Abstract
The invention relates to the technical field of petroleum and natural gas pipes, in particular to a nickel-based alloy continuous oil pipe used in a complex underground environment and a manufacturing method thereof. A nickel-based alloy coiled tubing used in complex environment in the pit comprises the following chemical element components in percentage by weight: cr:21 to 24 percent; co:10 to 15 percent; mo:8 to 10 percent; 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 percent; less than or equal to 0.11 percent of B and the balance of nickel. The coiled tubing has the advantages that the outer diameter is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is larger than 61m, the yield strength is larger than 303MPa, the tensile strength is larger than 774MPa, the elongation is larger than or equal to 35%, and the coiled tubing can be normally used in complex environments containing oxygen, high temperature, hydrogen sulfide, various corrosive media and the like.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas pipes, in particular to a nickel-based alloy continuous oil pipe used in a complex underground environment and a manufacturing method thereof.
Background
The coiled tubing is a coiled petroleum tubing with a length of thousands of meters, which is suitable for the aspects of well repair, well logging, well drilling and the like of oil and gas fields, and has a series of characteristics of high efficiency, low operation cost, wide operation range, small occupied area and the like.
Along with the continuous development of oil and gas resources, oil and gas fields such as high temperature, high pressure, corrosion resistance, unconventional oil and gas resources and the like gradually become the main direction of oil and gas field development, but at present, coiled tubing applied to various complex working conditions does not exist, a deep coal bed gasification cavity has corrosion environments such as high temperature, acid, oxygen and the like, the coiled tubing is required to have high-temperature mechanical property requirements, and the coiled tubing is required to have the working capacity of complex working conditions, when the oil and gas development is carried out, the coiled tubing with better corrosion resistance has a titanium alloy coiled tubing, the titanium alloy coiled tubing has the properties of high temperature resistance and corrosion resistance, but in a hydrofluoric acid environment, the coiled tubing can be corroded to damage at an extremely high speed; CN 1089420103A a nickel-based alloy steel continuous oil manufacturing method adopts Ni-Cu nickel-based alloy, belongs to the most basic nickel-based alloy, corrosion resistance is limited under the condition of no oxygen or oxidant, in the oil development and coal underground gasification development processes, oxidant is inevitably required to be injected into a pipe, oxygen drives foam and oxygen-carrying operation, the most basic substances in oil and gas products cannot be thickly or inevitably subjected to corrosive media such as hydrogen sulfide in an oxygen environment, and a titanium alloy continuous oil pipe is expensive along with the price, but cannot solve the problem of hydrogen sulfide corrosion, so that the development of a new product of the continuous oil pipe suitable for a complex environment becomes a problem to be solved urgently in order to solve the problem that the continuous oil pipe serves in complex environments such as oxygen-containing environment, high temperature environment and hydrogen sulfide.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a nickel-based alloy coiled tubing used in a complex underground environment and a manufacturing method thereof.
The technical scheme of the invention is as follows: a nickel-based alloy coiled tubing used in a complex downhole environment comprises the following chemical element components in percentage by weight: cr:21 to 24 percent; co:10 to 15 percent; mo:8 to 10 percent; 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 percent; less than or equal to 0.11 percent of B and the balance of nickel.
The outer diameter of the continuous oil pipe is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is larger than 61m, the yield strength is larger than 303MPa, the tensile strength is larger than 774MPa, and the elongation is larger than or equal to 35%.
The chemical composition of the nickel-based alloy coiled tubing used for the complex downhole environment is selected according to the following steps: wherein Cr endows Ni with corrosion resistance under an oxidation condition and oxidation resistance and sulfuration resistance at high temperature, and Co improves the toughness, plasticity and hot-forming property of the alloy while enhancing the solid solution strengthening effect. Co can form (Ni, co) 3 (Al, ti), the solubility of Al and Ti in a matrix is reduced, the solid solution temperature of a gamma' phase is increased, and then grain boundary carbide precipitation is reduced, so that the width of a grain boundary chromium-poor area is reduced, and the quantity of strengthening phases in the alloy is increased. Mo and W remarkably improve the corrosion resistance of Ni in reducing acid, cr and Mo are added to improve the corrosion resistance of Ni in an oxidizing medium and a reducing medium, elements such as Ti, al and the like can precipitate a gamma' -Ni3 (Ti, al) strengthening phase in the aging process, so that an excellent strengthening and toughening effect can be obtained.
The manufacturing method of the nickel-based alloy coiled tubing for the complex downhole environment comprises the following steps:
s1: the method for manufacturing the nickel-based alloy plate for the continuous oil pipe comprises the following specific steps:
s11: preparing an ingot casting raw material according to the weight percentage of the chemical element components of the continuous oil pipe, and smelting the ingot casting raw material by adopting a double-process of Vacuum Induction Melting (VIM) and protective atmosphere electroslag remelting (ESR) to form an ingot casting;
s12: polishing the surface of the cast ingot to remove oxide skin, then heating the cast ingot to 1200 ℃ to perform cogging forging, and obtaining a coiled tube nickel-based alloy plate through forging and multi-pass hot rolling;
s13: rough rolling and finish rolling are carried out at the temperature of 1100-1200 ℃, a hot rolled plate with the width of 1000-1200 mm and the thickness of 1.5-6.5 mm is rolled, solution heat treatment is carried out for 2-3 hours at the temperature of 1190-1210 ℃ by adopting a muffle furnace, and a nickel-based alloy coiled plate for manufacturing the continuous oil pipe is obtained;
s2: longitudinally cutting the coiled tubing nickel-based alloy plate obtained in the step S1 into a coiled tubing nickel-based alloy strip with a certain width according to the size of a coiled tubing to be manufactured, obliquely cutting two sides of the coiled tubing nickel-based alloy strip to form an angle A, wherein the range of A is 0-90 degrees, processing a cut surface into an I-shaped or V-shaped groove, grinding the cut surface, accurately splicing the head and the tail of the front and the back nickel-based alloy plates along the angle A, installing an arc guiding plate and an arc extinguishing plate on two sides of the splicing position of the cut in a gas shielded welding mode, polishing a joint, cleaning an oxide skin on the surface, then performing small heat input welding by one of a vacuum laser machine, an argon shielded welding method and a submerged arc welding method, and cleaning welding slag of the welded joint by grinding;
s3: after the butt joint is completed, completely cooling a to-be-welded seam, removing surface welding slag, cleaning the welding slag, polishing and preheating the part of the butt joint, removing surface foreign matters, putting the butt joint into a vacuum cavity, vacuumizing the cavity, heating the butt joint and a heat affected zone thereof to 1190-1210 ℃ in a vacuum environment, preserving heat for 60s, grinding the butt joint, then preserving heat at 1140-1200 ℃ for 30s, and performing flaw detection on the butt joint by adopting an eddy current and ultrasonic flaw detection mode after the heat treatment is completed;
s4: enabling the length of the nickel-based alloy strip to reach the required length through the butt joint of the steps S2 and S3 for multiple times, processing two sides of the nickel-based alloy strip into an I-shaped groove, preheating and edge polishing the nickel-based alloy strip, carrying out continuous welding on a tube blank by using an argon protection laser welding technology and an argon purity of more than or equal to 99.7% through a submerged arc welding technology, removing burrs outside a welding seam by using a scraper or a coping method, and welding into a nickel-based alloy continuous oil tube with the tube diameter of phi 12.7-phi 88.9mm and the wall thickness of 1.5-6.4 mm;
s5: carrying out solid solution and annealing treatment on the nickel-based alloy continuous oil pipe obtained in the step S4 in a medium-frequency induction heating mode, carrying out whole pipe rolling on the nickel-based alloy continuous oil pipe after the heat treatment temperature is 1190-1210 ℃ and the heat preservation is 60-90S, cooling the rolled nickel-based alloy continuous oil pipe, and then carrying out heat preservation for 20-30S and annealing at the temperature of 1140-1200 ℃;
s6: and (3) winding the nickel-based alloy coiled tubing processed in the step (S5) on a production winding drum with a large core diameter by a winding machine, then rewinding on a transportation winding drum, and carrying out nondestructive testing and hydrostatic pressure testing to finally obtain the nickel-based alloy coiled tubing.
In the step S11, the obtained ingot is subjected to heat preservation at 1210 ℃ for 48 hours for homogenization treatment so as to eliminate dendrite and element segregation of the ingot and dissolve part of carbide in the crystal.
And S4, fixing a blade with a corresponding specification at an inlet and an outlet of the muffle furnace to polish and preheat the edge of the nickel-based alloy strip of the continuous oil pipe, wherein the preheating temperature is 25-30 ℃.
The invention has the beneficial effects that:
1. the outer diameter of the nickel-based alloy continuous oil pipe manufactured by the method is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is larger than 61m, the yield strength is larger than 303MPa, the tensile strength is larger than 774MPa, and the elongation is larger 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 butt joint of the nickel-based alloy continuous oil pipe, so that the grain size of a welding seam is refined, and the stability of the welding seam structure is ensured; 3. the method has the advantages that the coiled tubing is integrally deformed through multiple times of rolling, the roundness of the tubing is increased through integral deformation to play a role in straightening, the grain size of a welding seam is refined, a welding structure with uniform structure is obtained, internal stress caused by rolling is eliminated through annealing treatment after welding, and the service life of the coiled tubing is prolonged.
Detailed Description
The present invention is described in further detail below with reference to examples:
example 1
A nickel-based alloy coiled tubing used in a complex downhole environment comprises the following chemical element components in percentage by weight: cr:21 to 24 percent; co:10 to 15 percent; mo:8 to 10 percent; 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 percent; less than or equal to 0.11 percent of B and the balance of nickel.
The outer diameter of the continuous oil pipe is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is larger than 61m, the yield strength is larger than 303MPa, the tensile strength is larger than 774MPa, and the elongation is larger 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 at high temperature are endowed by Cr, and Co enhances the solid solution strengthening effect and improves the toughness and hot-forming property of the alloy. Co can form (Ni, co) 3 (Al, ti), the solubility of Al and Ti in a matrix is reduced, the solid solution temperature of a gamma' phase is increased, and then grain boundary carbide precipitation is reduced, so that the width of a grain boundary chromium-poor area is reduced, and the quantity of strengthening phases in the alloy is increased. Mo and W remarkably improve the corrosion resistance of Ni in reducing acid, cr and Mo are added to improve the corrosion resistance of Ni in an oxidizing medium and a reducing medium, elements such as Ti, al and the like can precipitate a gamma' -Ni3 (Ti, al) strengthening phase in the aging process, so that excellent strengthening and toughening effects can be obtained.
Example 2
A manufacturing method of a nickel-based alloy coiled tubing used in a complex downhole environment comprises the following steps:
s1: the method for manufacturing the nickel-based alloy plate of the continuous oil pipe comprises the following specific steps:
s11: preparing an ingot casting raw material according to the weight percentage of the chemical element components of the continuous oil pipe, and smelting the ingot casting raw material by adopting a duplex process of Vacuum Induction Melting (VIM) and protective atmosphere electroslag remelting (ESR) to form an ingot casting;
s12: polishing the surface of the cast ingot to remove oxide skin, then heating the cast ingot to 1200 ℃ to perform cogging forging, and obtaining a coiled tube nickel-based alloy plate through forging and multi-pass hot rolling;
s13: rough rolling and finish rolling are carried out at the temperature of 1100-1200 ℃, a hot rolled plate with the width of 1000-1200 mm and the thickness of 1.5-6.5 mm is rolled, solution heat treatment is carried out for 2-3 hours at the temperature of 1190-1210 ℃ by adopting a muffle furnace, and a nickel-based alloy coiled plate for manufacturing the continuous oil pipe is obtained;
s2: longitudinally cutting the coiled tubing nickel-based alloy plate obtained in the step S1 into a coiled tubing nickel-based alloy strip with a certain width according to the size of a coiled tubing to be manufactured, obliquely cutting two sides of the coiled tubing nickel-based alloy strip to form an angle A, wherein the range of A is 0-90 degrees, processing a cut surface into an I-shaped or V-shaped groove, grinding the cut surface, accurately splicing the head and the tail of the front and the back nickel-based alloy plates along the angle A, installing an arc guiding plate and an arc extinguishing plate on two sides of the splicing position of the cut in a gas shielded welding mode, polishing a joint, cleaning an oxide skin on the surface, then performing small heat input welding by one of a vacuum laser machine, an argon shielded welding method and a submerged arc welding method, and cleaning welding slag of the welded joint by grinding;
s3: after the butt joint is completed, completely cooling a to-be-welded seam, removing surface welding slag, cleaning the welding slag, polishing and preheating the part of the butt joint, removing surface foreign matters, putting the butt joint into a vacuum cavity, vacuumizing the cavity, heating the butt joint and a heat affected zone thereof to 1190-1210 ℃ in a vacuum environment, preserving heat for 60s, grinding the butt joint, then preserving heat at 1140-1200 ℃ for 30s, and performing flaw detection on the butt joint by adopting an eddy current and ultrasonic flaw detection mode after the heat treatment is completed;
s4: enabling the length of the nickel-based alloy strip to reach the required length through the butt joint of the steps S2 and S3 for multiple times, processing two sides of the nickel-based alloy strip into an I-shaped groove, preheating and edge polishing the nickel-based alloy strip, carrying out continuous welding on a tube blank by using an argon protection laser welding technology and an argon purity of more than or equal to 99.7% through a submerged arc welding technology, removing burrs outside a welding seam by using a scraper or a coping method, and welding into a nickel-based alloy continuous oil tube with the tube diameter of phi 12.7-phi 88.9mm and the wall thickness of 1.5-6.4 mm;
s5: carrying out solid solution and annealing treatment on the nickel-based alloy continuous oil pipe obtained in the step S4 in a medium-frequency induction heating mode, carrying out whole pipe rolling on the nickel-based alloy continuous oil pipe after the heat treatment temperature is 1190-1210 ℃ and the heat preservation is 60-90S, cooling the rolled nickel-based alloy continuous oil pipe, and then carrying out heat preservation for 20-30S and annealing at the temperature of 1140-1200 ℃;
s6: and (4) winding the nickel-based alloy coiled tubing treated in the step (S5) on a production winding drum with a large core diameter through a coiler, then rewinding on a transportation winding drum, and carrying out nondestructive testing and hydrostatic testing to finally obtain the nickel-based alloy coiled tubing.
In the step S11, the obtained ingot is subjected to heat preservation at 1210 ℃ for 48 hours for homogenization treatment so as to eliminate dendrite and element segregation of the ingot and dissolve part of carbide in the crystal.
And S4, fixing a blade with a corresponding specification at an inlet and an outlet of the muffle furnace to polish and preheat the edge of the nickel-based alloy strip of the continuous oil pipe, wherein the preheating temperature is 25-30 ℃.
Example 3
A nickel-based alloy coiled tubing used in complex downhole environment is manufactured by the following specific steps:
s1: the method for manufacturing the nickel-based alloy plate of the continuous oil pipe comprises the following specific steps:
according to the weight percentage of the chemical element components of the coiled tubing in the embodiment 1, the chemical element components of the coiled tubing are as follows in percentage by weight: cr:22.17 percent; 10.00 percent of Co; 9.22 percent of Mo; 0.028 percent of Mn; ti:0.38 percent; al:1.2 percent; si:0.11 to 0.5 percent; c is less than or equal to 0.005 percent; b is less than or equal to 0.11 percent, preparing ingot casting raw materials, and smelting the ingot casting raw materials into an ingot casting by adopting a Vacuum Induction Melting (VIM) and protective atmosphere electroslag remelting (ESR) duplex process; polishing the surface of the cast ingot to remove oxide skin, then heating the cast ingot to 1200 ℃ to perform cogging forging, and obtaining a continuous oil pipe nickel-based alloy coiled sheet with the thickness of 660 multiplied by 3.18mm through forging and multi-pass hot rolling;
s2: forging and rolling the cast ingot to obtain a nickel-based alloy coiled plate, and longitudinally shearing the nickel-based alloy coiled plate into a continuous oil pipe coiled plate strip with the specification of phi 38.1 multiplied by 3.18 mm; beveling two ends of the nickel-based alloy strip after longitudinal shearing along 45 degrees, welding by adopting a vacuum laser welding method, and cooling the nickel-based alloy strip by adopting an inert gas extremely-cold mode;
s3: lengthening the nickel-based alloy strip to 3000m, and carrying out continuous crimping welding forming on the nickel-based alloy strip after edge grinding and preheating;
s4: welding is completed in an argon protection environment by adopting a laser welding method, and a welding line is rapidly cooled by using a water cooling mode;
s5: heating the welded pipe blank to 1190 ℃ by adopting a medium-frequency induction heating method, preserving heat for 60s, cooling by water, rolling and deforming the whole pipe under a certain pressure, and preserving heat for 30s at 1200 ℃ for annealing treatment;
s6: winding the annealed pipe on a winding drum with the core diameter of 1219.2 mm.
Through tests, the tensile yield strength of the whole continuous oil pipe is 350MPa, the tensile strength is 840Pa, and the elongation is 45%.
TABLE 1 Corrosion resistance test results
TABLE 2 comparison of Oxidation and Corrosion resistance rates for different periods
TABLE 3 Corrosion resistance comparisons of 20% of HCl +5% of organic acids at different temperatures
As can be seen from tables 1-3, the nickel-based alloy continuous tube for the complex environment in the well, which is produced by the method, has excellent mechanical properties; the performance of intergranular corrosion resistance, hydrogen induced cracking resistance, magnesium chloride stress corrosion resistance and oxygen stress corrosion resistance is excellent; as can be seen from Table 1, the coiled tubing has excellent 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 a high-temperature autoclave under simulated working conditions under certain oilfield bottom working conditions is obviously superior to that of 316L austenitic stainless steel and 2205 duplex stainless steel in the oxygen corrosion resistance at 80 ℃, and pitting corrosion hardly occurs; the working condition shown in the table 3 is a certain typical injection working condition in continuous pipe operation, and compared with austenitic stainless steel BG2532 with high chromium content, the corrosion resistance of the steel 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 corrosion of various complex environments and has good corrosion resistance effect.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (5)
1. A nickel base alloy coiled tubing for complex environment in pit, its characterized in that: the chemical element components of the continuous oil pipe are as follows by weight percent: cr:21 to 24 percent; co:10 to 15 percent; mo:8 to 10 percent; 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 percent; less than or equal to 0.11 percent of B, and the balance of nickel.
2. The nickel-based alloy coiled tubing for downhole complex environments, according to claim 1, wherein: the outer diameter of the continuous oil pipe is 25.4-88.9 mm, the wall thickness is 3.0-6.5 mm, the length is larger than 61m, the yield strength is larger than 303MPa, the tensile strength is larger than 774MPa, and the elongation is larger than or equal to 35%.
3. A method of manufacturing a nickel-base alloy coiled tubing for downhole complex environments as defined in claim 1 or 2, wherein: the method comprises the following steps:
s1: the method for manufacturing the nickel-based alloy plate for the continuous oil pipe comprises the following specific steps:
s11: preparing an ingot casting raw material according to the weight percentage of the chemical element components of the continuous oil pipe, and smelting the ingot casting raw material by adopting a duplex process of Vacuum Induction Melting (VIM) and protective atmosphere electroslag remelting (ESR) to form an ingot casting;
s12: polishing the surface of the cast ingot to remove oxide skin, then heating the cast ingot to 1200 ℃ to perform cogging forging, and obtaining a coiled tube nickel-based alloy plate through forging and multi-pass hot rolling;
s13: rough rolling and finish rolling are carried out at the temperature of 1100-1200 ℃, a hot rolled plate with the width of 1000-1200 mm and the thickness of 1.5-6.5 mm is rolled, solution heat treatment is carried out for 2-3 hours at the temperature of 1190-1210 ℃ by adopting a muffle furnace, and a nickel-based alloy coiled plate for manufacturing the continuous oil pipe is obtained;
s2: longitudinally cutting the coiled tubing nickel-based alloy plate obtained in the step S1 into a coiled tubing nickel-based alloy strip with a certain width according to the size of a coiled tubing to be manufactured, obliquely cutting two sides of the coiled tubing nickel-based alloy strip to form an angle A, wherein the range of A is 0-90 degrees, processing a cut surface into an I-shaped or V-shaped groove, grinding the cut surface, accurately splicing the head and the tail of the front and the back nickel-based alloy plates along the angle A, installing an arc guiding plate and an arc extinguishing plate on two sides of the splicing position of the cut in a gas shielded welding mode, polishing a joint, cleaning an oxide skin on the surface, then performing small heat input welding by one of a vacuum laser machine, an argon shielded welding method and a submerged arc welding method, and cleaning welding slag of the welded joint by grinding;
s3: after the butt joint is finished, after the welding seam is completely cooled, removing welding slag on the surface, cleaning the welding slag, polishing and preheating the part of the butt joint, removing foreign matters on the surface, putting the butt joint into a vacuum cavity, vacuumizing the cavity, heating the welding seam and a heat affected zone thereof to 1190-1210 ℃ in a vacuum environment, preserving heat for 60s, carrying out rolling on the butt joint after solid solution, then carrying out heat preservation for 30s annealing at 1140-1200 ℃, and carrying out flaw detection on the butt joint in an eddy current and ultrasonic flaw detection mode after the heat treatment is finished;
s4: enabling the length of the nickel-based alloy strip to reach the required length through the butt joint of the steps S2 and S3 for multiple times, processing two sides of the nickel-based alloy strip into an I-shaped groove, preheating and edge polishing the nickel-based alloy strip, carrying out continuous welding on a tube blank by using an argon protection laser welding technology and an argon purity of more than or equal to 99.7% through a submerged arc welding technology, removing burrs outside a welding seam by using a scraper or a coping method, and welding into a nickel-based alloy continuous oil tube with the tube diameter of phi 12.7-phi 88.9mm and the wall thickness of 1.5-6.4 mm;
s5: carrying out solid solution and annealing treatment on the nickel-based alloy coiled tubing obtained in the step S4 by adopting a medium-frequency induction heating mode, carrying out whole tube rolling on the nickel-based alloy coiled tubing after the heat treatment temperature is 1190-1210 ℃ and the heat preservation time is 60-90S, cooling the rolled nickel-based alloy coiled tubing, and then carrying out heat preservation for 20-30S and annealing at the temperature of 1140-1200 ℃;
s6: and (4) winding the nickel-based alloy coiled tubing treated in the step (S5) on a production winding drum with a large core diameter through a coiler, then rewinding on a transportation winding drum, and carrying out nondestructive testing and hydrostatic testing to finally obtain the nickel-based alloy coiled tubing.
4. The manufacturing method of the nickel-based alloy coiled tubing for the complex environment in the well is characterized by comprising the following steps of: in the step S11, the obtained ingot is subjected to heat preservation at 1210 ℃ for 48 hours for homogenization treatment so as to eliminate dendrite and element segregation of the ingot and dissolve part of carbide in the crystal.
5. The manufacturing method of the nickel-based alloy coiled tubing for the complex environment in the well is characterized in that: and S4, fixing a blade with a corresponding specification at an inlet and an outlet of the muffle furnace to polish and preheat the edge of the nickel-based alloy belt of the continuous oil pipe, wherein the preheating temperature is 25 to 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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