CN102418039B - Steel for solid expandable tube used for casing damage patching of oil and gas well and manufacturing method thereof - Google Patents
Steel for solid expandable tube used for casing damage patching of oil and gas well and manufacturing method thereof Download PDFInfo
- Publication number
- CN102418039B CN102418039B CN 201110419472 CN201110419472A CN102418039B CN 102418039 B CN102418039 B CN 102418039B CN 201110419472 CN201110419472 CN 201110419472 CN 201110419472 A CN201110419472 A CN 201110419472A CN 102418039 B CN102418039 B CN 102418039B
- Authority
- CN
- China
- Prior art keywords
- steel
- hot
- gas well
- expansion pipe
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses steel for a solid expandable tube used for casing damage patching of an oil and gas well and a manufacturing method thereof. The steel for the solid expandable tube comprises the following components in percentage by weight: 0.02-0.15% of C, 1.0-2.2% of Mn, 0.15-0.40% of Si, not more than 0.01% of P, not more than 0.005% of S, 0.10-0.45% of Mo, 0.01-0.14% of Zr, 0.02-0.35% of Cu, 0.1-0.18% of Re (rare-earth elements), 0.005-0.03% of Al, 0.001-0.005% of Ca, not more than 0.0005% of N and the balance of Fe. The manufacturing method of the steel for the solid expandable tube comprises the following steps of: preparing a hot-rolled plate coil; producing an electric-resistance-welded steel tube from the hot-rolled plate coil; carrying out heat treatment on the welded tube body; and cutting into segments. The steel for the solid expandable tube has higher strength as well as excellent toughness, expansibility and corrosion resistance.
Description
Technical field
The present invention relates to a kind of industrial gas oil solid expansion pipe steel and manufacture method thereof.Solid expansion pipe with the composition that provides and technology manufacturing is suitable for oil gas well cover damage subsidy reparation, and the strength and toughness before and after expanding is good.
Background technology
Along with China's oil and gas development further gos deep into, many oil gas wells of having developed for some time since the continual corrosion that corrosive medium and local water bring with wash away, cover damage problem is serious day by day, show according to pertinent data, cover in some oil field of China decreases ratio up to more than 40%, method cost height and the efficient of routine replacement sleeve pipe are low, and the method that adopts the solid expansion pipe subsidy to repair can reduce cost greatly, improves remediation efficiency.
Entity expansion sleeve SET (Solid Expandable Tubular) technology is to realize that " saving " size of the hole is purpose, string of casing is expanded radially into a kind of drilling well, completion and the well workover new technology of desired diameter dimension in well.The development and application of bulged tube technology will make the drilling completion level of China significantly improve, and the drilling completion competitive power of China is further improved, have great economic benefit and social benefit, be considered to the richest revolutionary technology of petroleum drilling and mining industry " 21 century ".
Bulged tube technology is very fast in whole world development and application, and international bulged tube technology is now decreased several application field successful implementation application such as reparation at the sand prevention of oil well payzone, caving ground sealing and cover anti-collapse, that miss down-hole bad grounds such as stratum leak stopping.What this technology grasp was the most comprehensive at present, utilization is the most ripe is Vad good fortune company.Many gordian techniquies, particularly solid expansion pipe are directly subordinate to commercial the maintaining secrecy of height of offshore company with steel one, and this technology introduction home costs is higher, and being influences the technical development of entity expansion sleeve and one of several gordian techniquies of applying.
The smooth implementation of subsidizing operation in order to guarantee to expand and subsidy are repaired rear sleeve and are still had qualified mechanical property and corrosion resisting property, the expansion tube steel should have good dilatational strain ability, be that material will have higher uniform elongation, uniform elongation is more big, and the swellability of expansion pipe is more good; Require material after expanding, still to have good toughness and intensity simultaneously, should take into account the anti-stick button performance of expansion pipe connecting thread simultaneously.Moreover, expandable sleeve generally all adopts the resistance welding mode to produce, the existence of weld defect is bigger to the performance impact of its weld seam, form " weakness " of expansion process and the back use properties that expands easily, therefore will be by the optimization of composition design and manufacturing process, reduce the inclusion in the expansion tube steel, crystal grain thinning, improve segregation, improve the homogeneity of material weldability and weld seam and mother metal performance.
Because the damage sleeve pipe with the solid expansion pipe reparation has suitable ratio to be because therefore the inefficacy that corrosion causes requires cover to decrease subsidy and also should have certain solidity to corrosion with solid expansion pipe, satisfies stable the carrying out of field produces operation, reduces secondary failure.
Summary of the invention
The purpose of this invention is to provide a kind of oil gas well cover damage subsidizes with solid expansion pipe steel and manufacture method thereof, by composition design, hot-work and thermal treatment, make tiny ferrite and the perlite of axle shape such as finally being organized as of these steel, thereby preparation has good inflatable performance, have good intensity and toughness after expanding, weldquality and excellent property, mother metal and welding seam tissue capability evenly, have certain corrosion proof cover and decrease the subsidy solid expansion pipe.
For achieving the above object, technology solution of the present invention is as follows: a kind of oil gas well cover decreases subsidizes with the solid expansion pipe steel, and the weight percent of its each component is:
C:0.02-0.15 %; Mn:1.0-2.2%; Si:0.15-0.40%; P≤0.01%; S≤0.005%; Mo:0.10-0.45%; Zr:0.01-0.14%; Cu:0.02-0.35%; Rare earth elements RE: 0.1-0.18%; Al:0.005-0.03%; Ca 0.001-0.005%; N≤0.0005%; Surplus is Fe.
As preferably, a kind of oil gas well cover decreases subsidy and also comprises following components in weight percentage Nb:0.02-0.15% with solid expansion pipe with steel; Ti:0.01-0.08%; Cr:0.12-0.65%; Ni:0.05-0.12%; The alloying element of one or more among the V:0.001-0.03%.
As preferably, a kind of oil gas well cover decreases subsidy and with solid expansion pipe with the weight percent of its each component of steel is:
C:0.05-0.15%; Si:0.17-0.35%; Mn:1.10-1.70%; P≤0.01%; S≤0.005%; Cr:0.12-0.45%; Mo:0.12-0.39%; Zr:0.047-0.125%; Cu:0.11-0.32%; Rare earth elements RE: 0.11-0.17%; Ti:0.023-0.04%; Ni:0.098-0.11%; Al:0.007-0.018%; V:0.0049-0.011%; Ca 0.002-0.005%; N≤0.0005%; Fe: surplus.
A kind of oil gas well cover damage of making is subsidized with the method for solid expansion pipe with steel, may further comprise the steps:
A) preparation hot-rolled sheet coil: described oil gas well cover is decreased subsidy handle through the melting of oxygen blow converter, Ca with each component of steel with solid expansion pipe, external refining and vacuum outgas, becoming thickness through continuous casting again is the heavy slab of 250mm; And then be heated to 1200 ℃, and carry out 2 hours equal annealing, when being down to 1000-1100 ℃, temperature carries out roughing, and temperature is carried out finish rolling at 750-950 ℃, cools off after the finish rolling, and speed of cooling is 15-30 ℃/s; Batch then, coiling temperature 500-620 ℃, the thickness of making high comprehensive performance is the hot-rolled sheet coil of 6-15mm;
B) produce the vertical masonry joint electricresistance welded steel pipe with hot-rolled sheet coil: the hot-rolled sheet coil for preparing is cut into the wide steel band of 280mm-768mm by slitter, and edges of boards adopt and mill limit technology, switchboard bandwidth and two edges of boards are milled to be processed into be parallel to each other; The row's of employing rod forming method switchboard side wave shape is adjusted welding current, voltage parameter; The amount of compression of control weld seam is the 50%-100% thickness of slab, and angular aperture is controlled at 2-3 °, and welding speed is 15-25m/min, is welded into the steel pipes with straight that thickness is 6-15mm;
C) the postwelding body carries out the disposable integral normalizing at 930-980 ℃, then 550-680 ℃ of following tempering;
D) steel pipe of handling well is cut into the pipeline section of length 10-12m, at the two ends of every steel pipe, with numerically-controlled machine processing API standard thread or special thread.
Beneficial effect of the present invention is: the oil gas well cover of the present invention preparation decreases subsidy to have with steel with solid expansion pipe and waits tiny ferrite and a pearlitic structure of shape, steel is pure, grain fineness number is more than 10 grades, weld seam does not have inclusion, cold welding, defectives such as misalignment, mother metal and welding seam tissue capability are even, whole steel pipe has good inflatable performance, has good intensity and toughness after expanding: breaking elongation 〉=35%, uniform elongation 〉=20%, yield strength 〉=550, tensile strength 〉=660MPa, the horizontal full-scale summer of body, the horizontal full-scale summer of weld seam was than V-type striking energy 〉=60J than V-type striking energy 〉=80J; Through behind the radial plastic deformation of 10-15%, breaking elongation 〉=20%, uniform elongation 〉=10%, yield strength 〉=600MPa, tensile strength 〉=680MPa, the horizontal full-scale summer of body, the horizontal full-scale summer of weld seam was than V-type striking energy 〉=40J than V-type striking energy 〉=60J.The thread gluing phenomenon does not take place 3 times in shackle in the high-quality threaded connector employing API standard method of this pipe end processing.
The oil gas well cover of the present invention preparation decrease subsidy with solid expansion pipe with steel at the given year erosion rate≤0.025mm/y that contains in the Cl-ionic environment.
Solid expansion pipe of the present invention uses steel on design of components, take all factors into consideration the rational Match of the strength of materials, toughness and weldability, low carbon manganese steel in the employing, adding an amount of carbon mainly is in order to make material obtain the anti-stick button performance of certain intensity and screw thread, but too high carbon content can be influential to the plasticity of material, reduces the dilatational strain ability of material; The Mn element mainly is to improve the hardening capacity of steel and produce solution strengthening, the fusing point that Mn simultaneously reasonable in design and Si content can be controlled the oxide compound that produces in the material welding process, cooperating the preparation technology of back is the easier discharges of these oxide compounds, reduces weld defect; In order to improve the steel inclusion shape to improve plasticity, improve the material expansion character, adopt the Ca treatment process; Nb, the Ti of trace, the interpolation of V element form carbide and produce precipitation strength and crystal grain thinning; Content N≤0.0005% of N element is controlled in strictness, can control the strain aging performance of steel, makes material still have good toughness after the expansion operation; Adding RE can play inclusion and go bad, improves segregation, further the effect of crystal grain thinning and purification steel body.
Improving aspect the expansion pipe steel solidity to corrosion, when the RE constituent content less than 0.01% the time, corrosion resistance nature is improved little, along with the increase of RE element in the expansion pipe steel, it is more good that the oxidation-resistance of steel and solidity to corrosion are improved effect; Adding the Zr element mainly is to come adsorbing nitride and carbide in order to form the Zr oxide grain, have and corrode impedance preferably, improve the corrosion resistance nature of expansion pipe, while Zr element can suppress austenite crystal and grow up, the control inclusion morphology improves welding property to improve the transverse impact performance; The adding of Cu also can improve the corrosion resistance nature of steel, but the hot-work of material is had disadvantageous effect, need to add a certain amount of Ni and improves, and cooperates the interpolation of elements such as Mo, Cr to play the effect of a small amount of polynary composite alloying simultaneously.
Because the formation of sulfide causes the reduction of the effective content of Zr element in the steel, thereby can influence the formation of the oxide compound of Zr, and then the corrosion resistance nature of reduction expansion pipe steel, therefore the mass percent of S element must be controlled below 0.005% among the present invention, simultaneously, strict control P, S constituent content can reduce the quantity of inclusion, are conducive to improve the over-all properties of steel.
Solid expansion pipe of the present invention has higher intensity and good toughness with steel, and after repairing, the subsidy of expanding still has higher intensity and certain toughness, seam organization is tiny, performance is even, no weld defect, have good inflatable performance and over-all properties, satisfy the oil-gas field cover and decrease the performance requriements of repairing the expansion pipe material.
Embodiment
The following stated is preferred embodiment of the present invention only, is not that scope of the present invention is limited.
Embodiment 1: oil gas well cover of the present invention decreases the Steel Alloy material is used in subsidy with solid expansion pipe weight percent:
C:0.08%; Si:0.35%; Mn:1.50%; P:0.0089%; S:0.0016%; Cr:0.12%; Mo:0.22%; Zr:0.047%; Cu:0.11%; Rare earth elements RE: 0.11%; Ti:0.023%; Ni:0.098%; Al:0.007%; V:0.011%; Ca 0.002-0.005%; N≤0.0005%; Fe: surplus.
Cover decreases the manufacture method that solid expansion pipe is used in subsidy:
Above-mentioned cover is decreased subsidy handle through the melting of oxygen blow converter, Ca with the Steel Alloy material with solid expansion pipe, after external refining and the vacuum outgas, becoming thickness through continuous casting is the heavy slab of 250mm; And then be heated to about 1200 ℃, and temperature is down to 1000-1100 ℃ and is carried out roughing, and temperature is carried out finish rolling in the time of 910 ℃, water spray cooling after the finish rolling, speed of cooling is 18-20 ℃/s; Batch then, 580 ℃ of coiling temperatures, the thickness of making high comprehensive performance is the hot-rolled sheet coil of 9.19mm.
Produce the vertical masonry joint electricresistance welded steel pipe with hot-rolled sheet coil: the hot-rolled sheet coil for preparing is cut into the wide steel band of 445mm by slitter, and edges of boards adopt and mill limit technology, switchboard bandwidth and two edges of boards are milled to be processed into be parallel to each other; The row's of employing rod forming method switchboard side wave shape is adjusted welding current, voltage parameter; The amount of compression of control weld seam is at 6mm, and angular aperture is controlled at 2.3 °, and welding speed is 20m/min, is welded into caliber 139.7mm, and thickness is the steel pipes with straight of 9.19mm.
Welding back body carries out the disposable integral normalizing at 930 ℃, and then 600 ℃ of following tempering, metallographic structure is the tiny ferrite of axle shape and a small amount of perlite, and grain fineness number is 10 grades, and the commissure grain fineness number is 11.6 grades.
The steel pipe of handling well is cut into the pipeline section of length 11m, at the two ends of every steel pipe, with numerically-controlled machine processing API standard thread or special thread.
Performance characteristics: breaking elongation 36%, uniform elongation 24%, yield strength 615MPa, tensile strength 710MPa, the horizontal full-scale summer of body is than V-type striking energy 111J(7.5mm impact specimen scaled value), the horizontal full-scale summer of weld seam is than V-type striking energy 92J(7.5mm impact specimen scaled value); Behind 15% radial plastic deformation, breaking elongation 22%, uniform elongation 11%, yield strength 655MPa, tensile strength 730MPa, the horizontal full-scale summer of body is than V-type striking energy 108J(7.5mm impact specimen scaled value), the horizontal full-scale summer of weld seam is than V-type striking energy 75J(7.5mm impact specimen scaled value).The thread gluing phenomenon does not take place 3 times in shackle in the high-quality threaded connector employing API standard method of this pipe end processing.
Present embodiment expansion pipe steel are made sample, in following table 1 envrionment conditions, carry out the high temperature pressure corrosion test, dynamically rotating speed is 300 rev/mins, test period 96 hours, and it is 0.0229mm/y that the test back calculates year erosion rate according to standard NACE RP0775-2005.
Table 1 corrosion test condition
Embodiment 2: oil gas well cover of the present invention decreases the Steel Alloy material is used in subsidy with solid expansion pipe weight percent:
C:0.15%; Si:0.17%; Mn:1.10%; P:0.008%; S:0.0047%; Cr:0.24%; Mo:0.12%; Zr:0.103%; Cu:0.26%; Rare earth elements RE: 0.15%; Ti:0.04%; Nb:0.15%; Al:0.018%; V:0.0049%; Ca 0.002-0.005%, N≤0.0005%; Fe: surplus.
Cover decreases the manufacture method that solid expansion pipe is used in subsidy:
Above-mentioned cover is decreased subsidy handle through the melting of oxygen blow converter, Ca with the Steel Alloy material with solid expansion pipe, after external refining and the vacuum outgas, becoming thickness through continuous casting is the heavy slab of 250mm; And then be heated to about 1200 ℃, and temperature is down to 1000-1100 ℃ and is carried out roughing, and temperature is carried out finish rolling in the time of 950 ℃, water spray cooling after the finish rolling, speed of cooling is 22-25 ℃/s; Batch then, 550 ℃ of coiling temperatures, the thickness of making high comprehensive performance is the hot-rolled sheet coil of 7.72mm.
Produce the vertical masonry joint electricresistance welded steel pipe with hot-rolled sheet coil: the hot-rolled sheet coil for preparing is cut into the wide steel band of 362mm by slitter, and edges of boards adopt and mill limit technology, switchboard bandwidth and two edges of boards are milled to be processed into be parallel to each other; The row's of employing rod forming method switchboard side wave shape is adjusted welding current, voltage parameter; The amount of compression of control weld seam is at 7.7mm, and angular aperture is controlled at 3 °, and welding speed is 20m/min, is welded into caliber 114.3mm, and thickness is the steel pipes with straight of 7.72mm.
Welding back body carries out the disposable integral normalizing at 1000 ℃, and then 580 ℃ of following tempering, metallographic structure is the tiny ferrite of axle shape and a small amount of perlite, and grain fineness number is 11 grades, and the commissure grain fineness number is 11.6 grades.
The steel pipe of handling well is cut into the pipeline section of length 11m, at the two ends of every steel pipe, with numerically-controlled machine processing API standard thread or special thread.
Performance characteristics: breaking elongation 38%, uniform elongation 25%, yield strength 645MPa, tensile strength 755MPa, the horizontal full-scale summer of body is than V-type striking energy 84J(5mm impact specimen scaled value), the horizontal full-scale summer of weld seam is than V-type striking energy 75J(5mm impact specimen scaled value); Behind 15% radial plastic deformation, breaking elongation 23%, uniform elongation 11.5%, yield strength 675MPa, tensile strength 770MPa, the horizontal full-scale summer of body is than V-type striking energy 82J(5mm impact specimen scaled value), the horizontal full-scale summer of weld seam is than V-type striking energy 71J(5mm impact specimen scaled value).The thread gluing phenomenon does not take place 3 times in shackle in the high-quality threaded connector employing API standard method of this pipe end processing.
Present embodiment expansion pipe steel are made sample, in following table 2 envrionment conditionss, carry out the high temperature pressure corrosion test, dynamically rotating speed is 300 rev/mins, test period 96 hours, and it is 0.0206mm/y that the test back calculates year erosion rate according to standard NACE RP0775-2005.
Table 2; The corrosion test condition
Embodiment 3:
Oil gas well cover of the present invention decreases the Steel Alloy material is used in subsidy with solid expansion pipe weight percent:
C:0.11%; Si:0.29%; Mn:1.60%; P:0.0097%; S:0.0039%; Cr:0.44%; Mo:0.12%; Zr:0.081%; Cu:0.32%; Rare earth elements RE: 0.14%; Ti:0.03%; Nb:0.12%; Ni:0.107%; Al:0.009%; V:0.0079%; Ca 0.001-0.005%, N≤0.0005%; Fe: surplus.
Cover decreases the manufacture method that solid expansion pipe is used in subsidy:
Above-mentioned cover is decreased subsidy handle through the melting of oxygen blow converter, Ca with the Steel Alloy material with solid expansion pipe, after external refining and the vacuum outgas, becoming thickness through continuous casting is the heavy slab of 250mm; And then be heated to about 1200 ℃, and temperature is down to 1000～1100 ℃ and is carried out roughing, and temperature is carried out finish rolling in the time of 950 ℃, water spray cooling after the finish rolling, speed of cooling is 22 ~ 25 ℃/s; Batch then, 600 ℃ of coiling temperatures, the thickness of making high comprehensive performance is the hot-rolled sheet coil of 11.1mm.
Produce the vertical masonry joint electricresistance welded steel pipe with hot-rolled sheet coil: the hot-rolled sheet coil for preparing is cut into the wide steel band of 455mm by slitter, and edges of boards adopt and mill limit technology, switchboard bandwidth and two edges of boards are milled to be processed into be parallel to each other; The row's of employing rod forming method switchboard side wave shape is adjusted welding current, voltage parameter; The amount of compression of control weld seam is at 11mm, and angular aperture is controlled at 2.5 °, and welding speed is 20m/min, is welded into caliber 139.7mm, and thickness is the steel pipes with straight of 11.1mm.
Welding back body carries out the disposable integral normalizing at 980 ℃, and then 630 ℃ of following tempering, metallographic structure is the tiny ferrite of axle shape and a small amount of perlite, and grain fineness number is 11.6 grades, and the commissure grain fineness number is 11.6 grades.
The steel pipe of handling well is cut into the pipeline section of length 11m, at the two ends of every steel pipe, with numerically-controlled machine processing API standard thread or special thread.
Performance characteristics: breaking elongation 40.5%, uniform elongation 29%, yield strength 595MPa, tensile strength 685MPa, the horizontal full-scale summer of body, the horizontal full-scale summer of weld seam was than V-type striking energy 105J than V-type striking energy 122J; Behind 15% radial plastic deformation, breaking elongation 29.5%, uniform elongation 15%, yield strength 630MPa, tensile strength 715MPa, the horizontal full-scale summer of body, the horizontal full-scale summer of weld seam was than V-type striking energy 106J than V-type striking energy 117J.The thread gluing phenomenon does not take place 3 times in shackle in the high-quality threaded connector employing API standard method of this pipe end processing.
Present embodiment expansion pipe steel are made sample, in following table 3 envrionment conditionss, carry out the high temperature pressure corrosion test, dynamically rotating speed is 300 rev/mins, test period 96 hours, and it is 0.0191mm/y that the test back calculates the average year erosion rate according to standard NACE RP0775-2005.
Table 3 corrosion test condition
Embodiment 4:
Oil gas well cover of the present invention decreases the Steel Alloy material is used in subsidy with solid expansion pipe weight percent:
C:0.05%; Si:0.21%; Mn:1.70%; P:0.008%; S:0.0023%; Cr:0.45%; Mo:0.39%; Zr:0.125%; Cu:0.30%; Rare earth elements RE: 0.17%; Ti:0.026%; Nb:0.098%; Ni:0.11%; Al:0.018%; V:0.0049%; Ca 0.002-0.005%, N≤0.0005%; Fe: surplus.
Cover decreases the manufacture method that solid expansion pipe is used in subsidy:
Above-mentioned cover is decreased subsidy handle through the melting of oxygen blow converter, Ca with the Steel Alloy material with solid expansion pipe, after external refining and the vacuum outgas, becoming thickness through continuous casting is the heavy slab of 250mm; And then be heated to about 1200 ℃, and temperature is down to 1050 ~ 1100 ℃ and is carried out roughing, and temperature is carried out finish rolling in the time of 930 ℃, water spray cooling after the finish rolling, speed of cooling is 25 ~ 30 ℃/s; Batch then, 620 ℃ of coiling temperatures, the thickness of making high comprehensive performance is the hot-rolled sheet coil of 7.72mm.
Produce the vertical masonry joint electricresistance welded steel pipe with hot-rolled sheet coil: the hot-rolled sheet coil for preparing is cut into the wide steel band of 574mm by slitter, and edges of boards adopt and mill limit technology, switchboard bandwidth and two edges of boards are milled to be processed into be parallel to each other; The row's of employing rod forming method switchboard side wave shape is adjusted welding current, voltage parameter; The amount of compression of control weld seam is at 7.8mm, and angular aperture is controlled at 2.5 °, and welding speed is 21 ~ 22m/min, is welded into caliber 177.9mm, and thickness is the steel pipes with straight of 7.72mm.
Welding back body carries out the disposable integral normalizing at 930 ℃, and then 680 ℃ of following tempering, metallographic structure is the tiny ferrite of axle shape and a small amount of perlite, and grain fineness number is 12 grades, and the commissure grain fineness number is 11.6 grades.
The steel pipe of handling well is cut into the pipeline section of length 11m, at the two ends of every steel pipe, with numerically-controlled machine processing API standard thread or special thread.
Performance characteristics: breaking elongation 44%, uniform elongation 28%, yield strength 590MPa, tensile strength 675MPa, the horizontal full-scale summer of body is than V-type striking energy 95J(5mm impact specimen scaled value), the horizontal full-scale summer of weld seam is than V-type striking energy 89J(5mm impact specimen scaled value); Behind 15% radial plastic deformation, breaking elongation 27%, uniform elongation 11.5%, yield strength 635MPa, tensile strength 705MPa, the horizontal full-scale summer of body is than V-type striking energy 90J(7.5mm impact specimen scaled value), the horizontal full-scale summer of weld seam is than V-type striking energy 83J(7.5mm impact specimen scaled value).The thread gluing phenomenon does not take place 3 times in shackle in the high-quality threaded connector employing API standard method of this pipe end processing.
Present embodiment expansion pipe steel are made sample, in following table 4 envrionment conditionss, carry out the high temperature pressure corrosion test, dynamically rotating speed is 300 rev/mins, test period 96 hours, and it is 0.0238mm/y that the test back calculates the average year erosion rate according to standard NACE RP0775-2005.
Table 4 corrosion test condition
Claims (2)
1. an oil gas well cover decreases and subsidizes with the solid expansion pipe steel, it is characterized in that the weight percent of its each component is:
C:0.11%; Si:0.29%; Mn:1.60%; P:0.0097%; S:0.0039%; Cr:0.44%; Mo:0.12%; Zr:0.081%; Cu:0.32%; Rare earth elements RE: 0.14%; Ti:0.03%; Nb:0.12%; Ni:0.107%; Al:0.009%; V:0.0079%; Ca 0.001-0.005%, N≤0.0005%; Fe: surplus.
2. a manufacturing oil gas well cover as claimed in claim 1 decreases and subsidizes with the method for solid expansion pipe with steel, it is characterized in that may further comprise the steps:
A) preparation hot-rolled sheet coil: described oil gas well cover is decreased subsidy handle through the melting of oxygen blow converter, Ca with each component of steel with solid expansion pipe, after external refining and the vacuum outgas, becoming thickness through continuous casting is the heavy slab of 250mm; And then be heated to 1200 ℃, and temperature is down to 1000～1100 ℃ and is carried out roughing, and temperature is carried out finish rolling in the time of 950 ℃, water spray cooling after the finish rolling, speed of cooling is 22 ~ 25 ℃/s; Batch then, 600 ℃ of coiling temperatures, the thickness of making high comprehensive performance is the hot-rolled sheet coil of 11.1mm;
B) produce the vertical masonry joint electricresistance welded steel pipe with hot-rolled sheet coil: the hot-rolled sheet coil for preparing is cut into the wide steel band of 455mm by slitter, and edges of boards adopt and mill limit technology, switchboard bandwidth and two edges of boards are milled to be processed into be parallel to each other; The row's of employing rod forming method switchboard side wave shape is adjusted welding current, voltage parameter; The amount of compression of control weld seam is at 11mm, and angular aperture is controlled at 2.5 °, and welding speed is 20m/min, is welded into caliber 139.7mm, and thickness is the steel pipes with straight of 11.1mm;
C) welding back body carries out the disposable integral normalizing at 980 ℃, and then 630 ℃ of following tempering, metallographic structure is the tiny ferrite of axle shape and a small amount of perlite, and grain fineness number is 11.6 grades, and the commissure grain fineness number is 11.6 grades;
D) steel pipe of handling well is cut into the pipeline section of length 11m, at the two ends of every steel pipe, with numerically-controlled machine processing API standard thread or special thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110419472 CN102418039B (en) | 2011-12-15 | 2011-12-15 | Steel for solid expandable tube used for casing damage patching of oil and gas well and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110419472 CN102418039B (en) | 2011-12-15 | 2011-12-15 | Steel for solid expandable tube used for casing damage patching of oil and gas well and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102418039A CN102418039A (en) | 2012-04-18 |
| CN102418039B true CN102418039B (en) | 2013-07-03 |
Family
ID=45942682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110419472 Active CN102418039B (en) | 2011-12-15 | 2011-12-15 | Steel for solid expandable tube used for casing damage patching of oil and gas well and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102418039B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719764B (en) * | 2012-06-01 | 2014-06-11 | 天津大学 | Hydrogen sulfide corrosion-resistant expansion pipe material for petroleum well and preparation method thereof |
| CN103146996B (en) * | 2013-03-20 | 2015-01-21 | 钢铁研究总院 | Large-expansion steel for seamless steel tube and preparation method thereof |
| CN103836325A (en) * | 2014-03-14 | 2014-06-04 | 常熟市兰达兰基钢管附件有限公司 | Multifunctional welding steel pipe |
| CN104109813B (en) * | 2014-07-03 | 2016-06-22 | 西南石油大学 | A kind of big expansion-ratio expansion pipe dual phase steel of high resistance to Produced Water In Oil-gas Fields, Ngi corrosion and preparation method thereof |
| CN104498836B (en) * | 2014-12-22 | 2016-06-08 | 湖北长江石化设备有限公司 | A kind of corrosion-proof rare earth steel alloy |
| KR20190003649A (en) * | 2016-08-30 | 2019-01-09 | 신닛테츠스미킨 카부시키카이샤 | Flow tube for expandable tubular |
| CN109943703A (en) * | 2017-12-21 | 2019-06-28 | 特纳瑞斯盘管有限公司 | For manufacturing the method and system of continuous pipe |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008320179B2 (en) * | 2007-10-30 | 2011-10-13 | Nippon Steel Corporation | Steel pipe with excellent expandability and method for producing the same |
| CN101812631B (en) * | 2010-04-09 | 2011-08-03 | 中国石油天然气集团公司 | Steel for expandable casing for oil well and manufacturing method thereof |
| CN101805871B (en) * | 2010-04-09 | 2012-02-29 | 中国石油天然气集团公司 | Manufacturing method of expandable casing for oil and gas well |
-
2011
- 2011-12-15 CN CN 201110419472 patent/CN102418039B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102418039A (en) | 2012-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102418039B (en) | Steel for solid expandable tube used for casing damage patching of oil and gas well and manufacturing method thereof | |
| CN102876922B (en) | High-strength, high-toughness and corrosive environment resistant titanium alloy oil well pipe and manufacturing method thereof | |
| CN107177786B (en) | A kind of design and its manufacturing method of the high manganese cut deal of LNG storage tank | |
| CN101812631B (en) | Steel for expandable casing for oil well and manufacturing method thereof | |
| CN101805871B (en) | Manufacturing method of expandable casing for oil and gas well | |
| CN103334055B (en) | Pipeline steel with resistance against carbon dioxide and hydrogen sulfide corrosion and preparation method thereof | |
| CN102345077B (en) | Large-expansion-ratio expansion pipe steel with high product of strength and elongation and preparation method thereof | |
| CN102505093B (en) | Solid expansion tube steel for open hole completion of oil and gas well and manufacturing method thereof | |
| CN103160730B (en) | Large-swelling-amount welded tube and manufacturing method thereof | |
| CN102162067B (en) | Steel for anticorrosion sucker rods in oil field and production method thereof | |
| CN102534388A (en) | Rare earth containing H2S-corrosion resistance petroleum casing pipe and production method thereof | |
| AU2019329105B2 (en) | Duplex Stainless Steel Seamless Pipe and Method for Manufacturing Same | |
| CN106011638A (en) | Expansion casing for heavy oil thermal recovery well and manufacturing method of expansion casing | |
| CN105132822B (en) | A kind of resistance to CO2The excellent pipe line steel of corrosive nature and production method | |
| CN104451394A (en) | Anti-CO2 corrosion oil well pipe below 150 ksi produced by CPE unit and production method thereof | |
| CN101168823A (en) | Steel for high-plasticity continuous oil pipe and manufacturing method thereof | |
| CN104532090A (en) | 580Mpa-level aluminum alloy pipe for drill stem and manufacturing method thereof | |
| CN104651740A (en) | High-strength and -toughness 150 steel-grade drill pipe material and preparation method thereof | |
| CN110656287B (en) | Seamless steel pipe for high-strength drill rod and manufacturing method thereof | |
| CN100439551C (en) | High-grade highly carbon-dioxide resistant chloride ion corrosion oil annular tube steel and method for manufacturing the same | |
| CN112779471A (en) | Duplex stainless steel deformed steel bar for coastal super engineering and preparation process thereof | |
| CN104651741B (en) | High strength and toughness 160 steel grade drill rod material and preparation method thereof | |
| CN102430901A (en) | P110 steel level high frequency straight welded pipe manufacturing method | |
| CN101805872B (en) | Alloy pipe containing 18-24% of Mn and manufacturing method thereof | |
| CN103146996B (en) | Large-expansion steel for seamless steel tube and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 313000 No. 288 Funan Road, Wuxing District, Huzhou City, Zhejiang Province Co-patentee after: Xi`an Sanhuan Science & Technology Development Corporation Patentee after: Zhejiang Kingland Pipe Industry Co., Ltd. Address before: 313000 Yangjiabu, Huzhou Economic Development Zone, Zhejiang Province Co-patentee before: Xi`an Sanhuan Science & Technology Development Corporation Patentee before: Zhejiang Kingland Pipe Industry Co., Ltd. |