CN108747214A - A kind of process of compound oil well pipe of the manufacture with hoop - Google Patents
A kind of process of compound oil well pipe of the manufacture with hoop Download PDFInfo
- Publication number
- CN108747214A CN108747214A CN201810508996.5A CN201810508996A CN108747214A CN 108747214 A CN108747214 A CN 108747214A CN 201810508996 A CN201810508996 A CN 201810508996A CN 108747214 A CN108747214 A CN 108747214A
- Authority
- CN
- China
- Prior art keywords
- oil well
- well pipe
- wall
- compound oil
- hoop
- 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.)
- Pending
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 99
- 239000003129 oil well Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000008569 process Effects 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 230000007797 corrosion Effects 0.000 claims abstract description 18
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 30
- 239000000047 product Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 210000002615 epidermis Anatomy 0.000 claims description 15
- 210000003491 skin Anatomy 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 239000006227 byproduct Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000005097 cold rolling Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 10
- 239000011265 semifinished product Substances 0.000 claims description 10
- 238000005496 tempering Methods 0.000 claims description 10
- 229910000859 α-Fe Inorganic materials 0.000 claims description 10
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 238000005219 brazing Methods 0.000 claims description 5
- 239000010962 carbon steel Substances 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 238000005237 degreasing agent Methods 0.000 claims description 5
- 239000013527 degreasing agent Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 238000002161 passivation Methods 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000009987 spinning Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 208000004141 microcephaly Diseases 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a kind of processes of compound oil well pipe of the manufacture with hoop, include the following steps：Raw material prepare and its inspection → inner and outer pipe processing → inner and outer pipe machinery it is compound → heat treatment → finishing → compound oil well pipe inspection → hoop processing → hoop and compound oil well pipe machinery combined processing → finishing → finished product exfactory inspection；Present invention process method is simple, convenient；The compound oil well pipe prepared solves the problems, such as that the resistance to corrosion of existing compound oil well pipe generally existing is low big with energy loss in recovery process, this compound oil well pipe can effectively improve the resistance to corrosion and compactness height of oil well pipe, to exploitation reducig energy consumption, the cost for saving oil well, improves the utilization rate of resource.
Description
Technical field
The present invention relates to bimetallic steel pipe manufacture field, more particularly to a kind of technique of compound oil well pipe of the manufacture with hoop
Method.
Background technology
Compound oil well pipe product with hoop is germplasm height, easy-to-use oil well pipe new material product；Bimetallic material
Complex method have very much, one of the most common technique has current spinning process, traditional hubbing, hydrostatic platen press and explosive forming
Method etc..
Wherein spinning process is to drive rotation then by mechanical transmission mechanism by placing a spinning mold in inner tube
Inner tube metal is plastically deformed by compression mould, is fitted in the inner surface of outer tube.
Traditional hubbing is the mold of one blank of placement in bimetallic inner tube, while in blank mold microcephaly part
Mechanical pull mechanism is connected, divides flaring to act on by mold blank mold enlarged head so that inner tube metal is plastically deformed, pastes
Close the inner surface in outer tube.
Hydrostatic pressing rule is to borrow hydraulic principle, by the closed at both ends of inner tube, then by squeezing into industrial water toward inner tube,
So that inner tube metal is plastically deformed, it is fitted in the inner surface of outer tube.
Explosive forming method is assembled using priming system, reserves the priming system of appropriate length in base tube initiation ends to connect
Detonator；And it is risen after pipe end is assembled and is evacuated with vacuum pump between sealing ring big envelope and base, bushing pipe in base, the bushing pipe to assembling
It is quick-fried so that inner and outer pipes form compound under instantaneous high-temperature and powerful explosion force effect.
Invention content
The technical problem to be solved in the present invention is to provide a kind of process is simple, and the compound oil with hoop prepared
The process for the compound oil well pipe with hoop that well casing has resistance to corrosion strong, convenient for connecting oil well pipe.
In order to achieve the above objectives, technical scheme is as follows：
A kind of process of compound oil well pipe of the manufacture with hoop, the process include the following steps：
(1) raw material prepare and its examine
Outer tube uses carbon steel pipe, inner tube to use stainless steel tube；The gap of 1-5mm is advanced between inner and outer pipes；In simultaneously
The straightness of outer tube requires to ensure to be not more than 1.5mm/m；
(2) outer tube is handled；
Outer tube is placed in the hydrochloric acid solution of 12-15%, the oxide skin and corrosion layer of epidermis are removed；It again will be in outer tube
Wall does low-level oxidation processing, is then restored in furnace high-temperature, and it is in cotton-shaped ferrite to make its surface；
(3) inner tube is handled
Inner tube is placed in the hydrochloric acid solution of 12-15%, the oxide skin and corrosion layer of epidermis are removed；Then by inner tube
Outer wall does Passivation Treatment, and chromium and nickel are exposed at matrix surface by de-iron；
(4) inner and outer pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places outer tube, while inner tube being pushed away and is put
Into outer pipe orifice；Inside and outside tube wall is encountered together, and when can not promote, not application of force casing by force；
(5) high temperature and pressure is heat-treated；
The compound oil well pipe obtained in step (4) is put into 760-800 degrees Celsius of protective atmosphere and carries out continuous high temperature
Heating, and continue 1.5-2.5 hours, and increase 20-200Mpa pressure into the aperture of capping；
(6) finishing；
Cutting and reconditioning are carried out by product size requirement；
(7) compound oil well pipe is examined；
The smooth degree of the binding force and inner wall between inner and outer pipe double-metal layer is examined, if binding force and inner wall is smooth
Degree is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring, then needs pair
The smooth degree of inner wall carries out finishing；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products；
(8) hoop is handled
Hoop is placed in the hydrochloric acid solution of 12-15%, the oxide skin and corrosion layer of epidermis are removed；It again will be in hoop
Wall does low-level oxidation processing, is then restored in furnace high-temperature, and it is in cotton-shaped ferrite to make its surface；
(9) hoop and compound oil well pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places hoop, while by compound oil well
Pipe, which pushes away, to be put into hoop endoporus；The inner wall of hoop and the inner wall of compound oil well pipe are encountered together, and when can not promote, not application of force
Casing by force；
(10) finishing；
Cutting and reconditioning are carried out by product size requirement；
(11) finished product exfactory inspection
The smooth degree of the binding force and inner wall between compound oil well pipe and hoop double-metal layer is examined, if binding force and interior
The smooth degree of wall is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring,
It then needs to carry out finishing to the smooth degree of inner wall；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products.
In one embodiment of the invention, further include temper after the step (4)：
The compound oil well pipe that step (4) obtains is brazed, is quenched, quenched obtained compound oil well pipe is carried out
Temper obtains metallurgical compound oil well pipe.
In one embodiment of the invention, the brazing temperature is 1200-1300 DEG C, hardening heat is 840-860 DEG C,
Hardening media is water, and water temperature need to be controlled at 40 DEG C；Tempering process parameters be temperature be 760-780 DEG C, after tempering in air
Middle natural cooling, 100-110 DEG C of cooling velocity/min.
In one embodiment of the invention, further include semi-finished product cleaning treatment after the step (5)：
Semi-finished product cleaning is that the compound oil well pipe being heat-treated by high temperature and pressure is put into the degreasing agent that temperature is 55 DEG C
It is middle impregnate 10 minutes, be then placed in clear water cylinder, with the clear water of pressure 0.4MPa from compound oil well pipe one end pour up to from
It flows out other end.
In one embodiment of the invention, the protective atmosphere in the step (5) is reducibility gas.
Through the above technical solutions, the beneficial effects of the invention are as follows：
The present invention adjusts two kinds of metal materials by cutting, and carries out that machinery is compound, then passes through high temperature and high pressure
Mode makes the two be combined together, is constantly adjusted during this, so that product is kept the state of fusion, is then adjusted after depanning
Whole inspection finish.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is present invention process flow chart.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Embodiment 1
Described in Fig. 1, the invention discloses a kind of process of compound oil well pipe of the manufacture with hoop, the techniques
Method includes the following steps：
(1) raw material prepare and its examine
Outer tube uses carbon steel pipe, inner tube to use stainless steel tube；The gap of 1mm is advanced between inner and outer pipes；It is inside and outside simultaneously
The straightness of pipe requires to ensure to be not more than 1.5mm/m；
(2) outer tube is handled；
Outer tube is placed in 12% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Again by the inner wall of outer tube
Low-level oxidation processing is done, is then restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(3) inner tube is handled
Inner tube is placed in 12% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Then by the outer of inner tube
Wall does Passivation Treatment, and chromium and nickel are exposed at matrix surface by de-iron；
(4) inner and outer pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places outer tube, while inner tube being pushed away and is put
Into outer pipe orifice；Inside and outside tube wall is encountered together, and when can not promote, not application of force casing by force；
(5) temper
The compound oil well pipe that step (4) obtains is brazed, is quenched, quenched obtained compound oil well pipe is carried out
Temper obtains metallurgical compound oil well pipe；Brazing temperature is 1200 DEG C, hardening heat is 840 DEG C, and hardening media is water, water temperature
It need to control at 40 DEG C；Tempering process parameters be temperature be 760 DEG C, natural cooling in air after tempering, cooling velocity 100
℃/min；
(6) high temperature and pressure is heat-treated；
The compound oil well pipe obtained in step (4) is put into progress continuous high temperature heating in 760 degrees Celsius of protective atmosphere,
And continue 1.5 hours, and increase 20Mpa pressure into the aperture of capping；Protective atmosphere is reducibility gas；
(7) semi-finished product cleaning treatment：
Semi-finished product cleaning is that the compound oil well pipe being heat-treated by high temperature and pressure is put into the degreasing agent that temperature is 55 DEG C
It is middle impregnate 10 minutes, be then placed in clear water cylinder, with the clear water of pressure 0.4MPa from compound oil well pipe one end pour up to from
It flows out other end
(8) finishing；
Cutting and reconditioning are carried out by product size requirement；
(9) compound oil well pipe is examined；
The smooth degree of the binding force and inner wall between inner and outer pipe double-metal layer is examined, if binding force and inner wall is smooth
Degree is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring, then needs pair
The smooth degree of inner wall carries out finishing；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products；
(10) hoop is handled
Hoop is placed in 12% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Again by the inner wall of hoop
Low-level oxidation processing is done, is then restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(11) hoop and compound oil well pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places hoop, while by compound oil well
Pipe, which pushes away, to be put into hoop endoporus；The inner wall of hoop and the inner wall of compound oil well pipe are encountered together, and when can not promote, not application of force
Casing by force；
(12) finishing；
Cutting and reconditioning are carried out by product size requirement；
(13) finished product exfactory inspection
The smooth degree of the binding force and inner wall between compound oil well pipe and hoop double-metal layer is examined, if binding force and interior
The smooth degree of wall is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring,
It then needs to carry out finishing to the smooth degree of inner wall；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products.
Embodiment 2
Described in Fig. 1, the invention discloses a kind of process of compound oil well pipe of the manufacture with hoop, the techniques
Method includes the following steps：
(1) raw material prepare and its examine
Outer tube uses carbon steel pipe, inner tube to use stainless steel tube；The gap of 3mm is advanced between inner and outer pipes；It is inside and outside simultaneously
The straightness of pipe requires to ensure to be not more than 1.5mm/m；
(2) outer tube is handled；
Outer tube is placed in 13% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Again by the inner wall of outer tube
Low-level oxidation processing is done, is then restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(3) inner tube is handled
Inner tube is placed in 13% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Then by the outer of inner tube
Wall does Passivation Treatment, and chromium and nickel are exposed at matrix surface by de-iron；
(4) inner and outer pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places outer tube, while inner tube being pushed away and is put
Into outer pipe orifice；Inside and outside tube wall is encountered together, and when can not promote, not application of force casing by force；
(5) temper
The compound oil well pipe that step (4) obtains is brazed, is quenched, quenched obtained compound oil well pipe is carried out
Temper obtains metallurgical compound oil well pipe；Brazing temperature is 1250 DEG C, hardening heat is 850 DEG C, and hardening media is water, water temperature
It need to control at 40 DEG C；Tempering process parameters be temperature be 770 DEG C, natural cooling in air after tempering, cooling velocity 105
℃/min；
(6) high temperature and pressure is heat-treated；
The compound oil well pipe obtained in step (4) is put into progress continuous high temperature heating in 780 degrees Celsius of protective atmosphere,
And continue 2.0 hours, and increase 100Mpa pressure into the aperture of capping；Protective atmosphere is reducibility gas；
(7) semi-finished product cleaning treatment：
Semi-finished product cleaning is that the compound oil well pipe being heat-treated by high temperature and pressure is put into the degreasing agent that temperature is 55 DEG C
It is middle impregnate 10 minutes, be then placed in clear water cylinder, with the clear water of pressure 0.4MPa from compound oil well pipe one end pour up to from
It flows out other end
(8) finishing；
Cutting and reconditioning are carried out by product size requirement；
(9) compound oil well pipe is examined；
The smooth degree of the binding force and inner wall between inner and outer pipe double-metal layer is examined, if binding force and inner wall is smooth
Degree is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring, then needs pair
The smooth degree of inner wall carries out finishing；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products；
(10) hoop is handled
Hoop is placed in 14% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Again by the inner wall of hoop
Low-level oxidation processing is done, is then restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(11) hoop and compound oil well pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places hoop, while by compound oil well
Pipe, which pushes away, to be put into hoop endoporus；The inner wall of hoop and the inner wall of compound oil well pipe are encountered together, and when can not promote, not application of force
Casing by force；
(12) finishing；
Cutting and reconditioning are carried out by product size requirement；
(13) finished product exfactory inspection
The smooth degree of the binding force and inner wall between compound oil well pipe and hoop double-metal layer is examined, if binding force and interior
The smooth degree of wall is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring,
It then needs to carry out finishing to the smooth degree of inner wall；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products.
Embodiment 3
Described in Fig. 1, the invention discloses a kind of process of compound oil well pipe of the manufacture with hoop, the techniques
Method includes the following steps：
(1) raw material prepare and its examine
Outer tube uses carbon steel pipe, inner tube to use stainless steel tube；The gap of 5mm is advanced between inner and outer pipes；It is inside and outside simultaneously
The straightness of pipe requires to ensure to be not more than 1.5mm/m；
(2) outer tube is handled；
Outer tube is placed in 15% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Again by the inner wall of outer tube
Low-level oxidation processing is done, is then restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(3) inner tube is handled
Inner tube is placed in 15% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Then by the outer of inner tube
Wall does Passivation Treatment, and chromium and nickel are exposed at matrix surface by de-iron；
(4) inner and outer pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places outer tube, while inner tube being pushed away and is put
Into outer pipe orifice；Inside and outside tube wall is encountered together, and when can not promote, not application of force casing by force；
(5) temper
The compound oil well pipe that step (4) obtains is brazed, is quenched, quenched obtained compound oil well pipe is carried out
Temper obtains metallurgical compound oil well pipe；Brazing temperature is 1300 DEG C, hardening heat is 860 DEG C, and hardening media is water, water temperature
It need to control at 40 DEG C；Tempering process parameters be temperature be 780 DEG C, natural cooling in air after tempering, cooling velocity 110
℃/min；
(6) high temperature and pressure is heat-treated；
The compound oil well pipe obtained in step (4) is put into progress continuous high temperature heating in 800 degrees Celsius of protective atmosphere,
And continue 2.5 hours, and increase 200Mpa pressure into the aperture of capping；Protective atmosphere is reducibility gas；
(7) semi-finished product cleaning treatment：
Semi-finished product cleaning is that the compound oil well pipe being heat-treated by high temperature and pressure is put into the degreasing agent that temperature is 55 DEG C
It is middle impregnate 10 minutes, be then placed in clear water cylinder, with the clear water of pressure 0.4MPa from compound oil well pipe one end pour up to from
It flows out other end
(8) finishing；
Cutting and reconditioning are carried out by product size requirement；
(9) compound oil well pipe is examined；
The smooth degree of the binding force and inner wall between inner and outer pipe double-metal layer is examined, if binding force and inner wall is smooth
Degree is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring, then needs pair
The smooth degree of inner wall carries out finishing；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products；
(10) hoop is handled
Hoop is placed in 15% hydrochloric acid solution, the oxide skin and corrosion layer of epidermis are removed；Again by the inner wall of hoop
Low-level oxidation processing is done, is then restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(11) hoop and compound oil well pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places hoop, while by compound oil well
Pipe, which pushes away, to be put into hoop endoporus；The inner wall of hoop and the inner wall of compound oil well pipe are encountered together, and when can not promote, not application of force
Casing by force；
(12) finishing；
Cutting and reconditioning are carried out by product size requirement；
(13) finished product exfactory inspection
The smooth degree of the binding force and inner wall between compound oil well pipe and hoop double-metal layer is examined, if binding force and interior
The smooth degree of wall is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring,
It then needs to carry out finishing to the smooth degree of inner wall；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of process of compound oil well pipe of the manufacture with hoop, which is characterized in that the process includes following step
Suddenly：
(1) raw material prepare and its examine
Outer tube uses carbon steel pipe, inner tube to use stainless steel tube；The gap of 1-5mm is advanced between inner and outer pipes；Inner and outer pipes simultaneously
Straightness require ensure be not more than 1.5mm/m；
(2) outer tube is handled；
Outer tube is placed in the hydrochloric acid solution of 12-15%, the oxide skin and corrosion layer of epidermis are removed；The inner wall of outer tube is done again
Then low-level oxidation processing is restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(3) inner tube is handled
Inner tube is placed in the hydrochloric acid solution of 12-15%, the oxide skin and corrosion layer of epidermis are removed；Then by the outer wall of inner tube
Passivation Treatment is done, chromium and nickel are exposed at matrix surface by de-iron；
(4) inner and outer pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places outer tube, while inner tube being pushed away and is put into outside
In pipe orifice；Inside and outside tube wall is encountered together, and when can not promote, not application of force casing by force；
(5) high temperature and pressure is heat-treated；
The compound oil well pipe obtained in step (4) is put into progress continuous high temperature heating in 760-800 degrees Celsius of protective atmosphere,
And continue 1.5-2.5 hours, and increase 20-200Mpa pressure into the aperture of capping；
(6) finishing；
Cutting and reconditioning are carried out by product size requirement；
(7) compound oil well pipe is examined；
The smooth degree for examining the binding force and inner wall between inner and outer pipe double-metal layer, if the smooth degree of binding force and inner wall
It meets the requirements, is then qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring, then needs to inner wall
Smooth degree carry out finishing；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products；
(8) hoop is handled
Hoop is placed in the hydrochloric acid solution of 12-15%, the oxide skin and corrosion layer of epidermis are removed；The inner wall of hoop is done again
Then low-level oxidation processing is restored in furnace high-temperature, it is in cotton-shaped ferrite to make its surface；
(9) hoop and compound oil well pipe machinery combined processing；
It is carried out using cold-drawn, hydraulic pressure, cold rolling mode compound；Compound tense first places hoop, while compound oil well pipe being pushed away
It is put into hoop endoporus；The inner wall of hoop and the inner wall of compound oil well pipe are encountered together, and when can not promote, and application of force is not by force
Casing；
(10) finishing；
Cutting and reconditioning are carried out by product size requirement；
(11) finished product exfactory inspection
The smooth degree of the binding force and inner wall between compound oil well pipe and hoop double-metal layer is examined, if binding force and inner wall
Smooth degree is met the requirements, then is qualified products；If binding force is met the requirements, the smooth degree of inner wall is unsatisfactory for requiring, then needs
Finishing is carried out to the smooth degree of inner wall；If the smooth degree of binding force and inner wall is unsatisfactory for requiring, for substandard products.
2. a kind of process of compound oil well pipe of the manufacture with hoop according to claim 1, which is characterized in that described
Step further includes temper after (4)：
The compound oil well pipe that step (4) obtains is brazed, is quenched, quenched obtained compound oil well pipe is tempered
Processing obtains metallurgical compound oil well pipe.
3. a kind of process of compound oil well pipe of the manufacture with hoop according to claim 2, which is characterized in that described
Brazing temperature is 1200-1300 DEG C, hardening heat is 840-860 DEG C, and hardening media is water, and water temperature need to be controlled at 40 DEG C；Tempering
Technological parameter be temperature be 760-780 DEG C, natural cooling in air after tempering, 100-110 DEG C of cooling velocity/min.
4. a kind of process of compound oil well pipe of the manufacture with hoop according to claim 1, which is characterized in that described
Further include semi-finished product cleaning treatment after step (5)：
Semi-finished product cleaning is that the compound oil well pipe being heat-treated by high temperature and pressure is put into the degreasing agent that temperature is 55 DEG C to soak
Bubble 10 minutes, is then placed in clear water cylinder, is poured from compound oil well pipe one end up to from another with the clear water of pressure 0.4MPa
Head outflow.
5. a kind of process of compound oil well pipe of the manufacture with hoop according to claim 1, which is characterized in that described
Protective atmosphere in step (5) is reducibility gas.
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| CN1248156A (en) * | 1997-01-21 | 2000-03-22 | 斯滕特技术公司 | Multilayer composite tubular structure and method of making |
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Application publication date: 20181106 |