CN109128699A - Drilling rod remanufactures the method and tubing and casing of tubing and casing - Google Patents
Drilling rod remanufactures the method and tubing and casing of tubing and casing Download PDFInfo
- Publication number
- CN109128699A CN109128699A CN201810983385.6A CN201810983385A CN109128699A CN 109128699 A CN109128699 A CN 109128699A CN 201810983385 A CN201810983385 A CN 201810983385A CN 109128699 A CN109128699 A CN 109128699A
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- casing
- tubing
- screw thread
- main part
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000008569 process Effects 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 238000005422 blasting Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 230000007547 defect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002679 ablation Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 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)
- Earth Drilling (AREA)
Abstract
The present invention provides methods and tubing and casing that a kind of drilling rod remanufactures tubing and casing, belong to petroleum equipment field.The method that drilling rod provided by the invention remanufactures tubing and casing, comprising: the female end of drilling rod and male end are cut off, main part is obtained；The first external screw thread and the first internal screw thread corresponding with first external screw thread are processed respectively in the front-end and back-end of the main part；The main part is surface-treated；Obtain tubing and casing.Compared with prior art, the method that drilling rod of the present invention remanufactures tubing and casing is that raw material make tubing and casing using waste and old drilling rod, so that waste and old drilling rod has been obtained effective utilization, avoid the wasting of resources.Tubing and casing is made of the method that above-described drilling rod remanufactures tubing and casing.Tubing and casing has the ability of higher stretch-proof, torsional pulse load.
Description
Technical field
The invention belongs to petroleum equipment technical fields, are the sides for being related to a kind of drilling rod and remanufacturing tubing and casing more specifically
Method and tubing and casing.
Background technique
For domestic drilling rod using one section of period or after reaching certain drilling depth, Guan Ju company can be according to drilling rod examination criteria to old
Drilling rod is carried out non-destructive testing and is classified, and is dropped due to the thinned of tube body size, the damage of joint screw thread and the reduction of connector outer diameter
Grade, or scrapped because of other problems, by DS-1 standard drill string examination requirements of volume 3, drill pipe body wall thickness wears up to residual wall thickness
When reaching original wall thickness 70%-80%, these drilling rods that degrade or scrap are most of, and with regard to collection, there are the Guan Ju company shapes of each elephant
Growth stage inventory or to auction by scrap steel, causes the serious wasting of resources.
Summary of the invention
The purpose of the present invention is to provide a kind of methods that drilling rod remanufactures tubing and casing, existing in the prior art to solve
The technical issues of waste and old drilling rod is directly recycled by scrap steel, is resulted in waste of resources.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of method that drilling rod remanufactures tubing and casing is provided,
Include:
The female end of drilling rod and male end are cut off, main part is obtained；
The first external screw thread and corresponding with first external screw thread is processed respectively in the front-end and back-end of the main part
First internal screw thread；
The main part is surface-treated；
Obtain tubing and casing.
Further, the front end of the drilling rod includes preceding thick section, and rear end includes rear thick section, the preceding thick section front end
Inner wall be equipped with the second female thread into the female end, it is described after the outer wall of thick section rear end be equipped with the second external screw thread and formed
The male end；It is described to include: by the female end of drilling rod and male end excision
By the front end mute of the preceding thick section, will it is described after thick section rear tip cut-off；
The front-end and back-end in the main part process the first external screw thread and opposite with first external screw thread respectively
The first internal screw thread answered includes:
The preceding thick section rear end and it is described after thick section front end process first external screw thread respectively and with described the
Corresponding first internal screw thread of one external screw thread.
Further, the drilling rod further includes the interlude being connected between the preceding thick section and the rear thick section；
The female end of drilling rod and male end are cut off described, before obtaining main part further include:
The straight degree of the interlude is measured, chooses and meets the drilling rod that predetermined straight degree requires.
Further, the straight degree of the measurement interlude, selection meet the drilling rod that predetermined straight degree requires and include:
The interlude deviates straight line or action is no more than the 0.2% of the interlude total length, while the interlude
The deviation distance in the length range of 1.5 meters of every end of the interlude should be met no more than 3.18 millis by deviateing straight line or action
Rice.
Further, the drilling rod further includes the interlude being connected between the preceding thick section and the rear thick section；
The female end of drilling rod and male end are cut off described, before obtaining main part further include:
The ovality of the interlude outer wall is measured, ovality is chosen and meets the drilling rod that predetermined ovality requires.
Further, the drilling rod further includes the interlude being connected between the preceding thick section and the rear thick section；
The female end of drilling rod and male end are cut off described, before obtaining main part further include:
The wall thickness of the interlude is measured, the drilling rod that wall thickness meets predetermined wall thickness requirement is chosen.
Further, the wall thickness of the measurement interlude, the drilling rod that selection wall thickness meets predetermined wall thickness requirement include:
The depth being recessed on the interlude wall surface is measured, subtracts the depth of recess with the neighbouring average wall thickness that is recessed to determine
Residual wall thickness under recess；Cup depth is chosen less than or equal to 4.8mm and residual wall thickness is more than or equal to drilling rod nominal wall thickness hundred
/ seven ten drilling rod.
Further, the female end of drilling rod and male end are cut off described, before obtaining main part further include:
It checks the defect inside drilling rod, chooses internal flaw and meet the drilling rod that predetermined internal flaw requires.
Further, the surface requirements according to tubing and casing, carrying out surface treatment to the main part includes:
Shot Blasting is carried out to the body outer wall；
The former coating of the main part inner wall is used into high temperature ablation, the main part inner wall is carried out at sandblasting later
Reason；
It coats to form the dedicated inner coating of tubing and casing in the main part inner wall.
The beneficial effect that drilling rod provided by the invention remanufactures the method for tubing and casing is: compared with prior art, this hair
The method that bright drilling rod remanufactures tubing and casing is that raw material make tubing and casing using waste and old drilling rod, has obtained waste and old drilling rod effectively
Utilization, avoid the wasting of resources.
The present invention also provides a kind of tubing and casing, the method system that tubing and casing is remanufactured using drilling rod described in any of the above item
Make.Tubing and casing has the ability of higher stretch-proof, torsional pulse load.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is that drilling rod provided in an embodiment of the present invention remanufactures the jackrod structure schematic diagram in the method for tubing and casing；
Fig. 2 is the flow chart for the method that drilling rod provided in an embodiment of the present invention remanufactures tubing and casing.
Wherein, each appended drawing reference in figure:
The preceding thick section 11-；12- interlude；Thick section after 13-；The first external screw thread of 21-；The first internal screw thread of 22-.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Also referring to Fig. 1 and Fig. 2, the method for now remanufacturing tubing and casing to drilling rod provided in an embodiment of the present invention is said
It is bright.The method that drilling rod remanufactures tubing and casing, comprising:
The female end of drilling rod and male end are cut off, main part is obtained；
The front-end and back-end of main part process respectively the first external screw thread 21 and with the first external screw thread 21 corresponding first
Internal screw thread 22；
Main part is surface-treated；
Obtain tubing and casing.
Compared with prior art, the method that drilling rod of the present invention remanufactures tubing and casing is raw material production using waste and old drilling rod
Tubing and casing makes waste and old drilling rod obtain effective utilization, avoids the wasting of resources.
Specifically, drilling rod has the ability of higher stretch-proof, torsional pulse load compared to tubing and casing, so utilizing drilling rod
Come the tubing and casing made, the performance requirement of tubing and casing can be fully met.According to the length of the tubing and casing of production, main part is determined
Length.The female end of old two ends of drill and male end are amputated with sawing machine according to the length of main part, remaining part
As main part.Main part one end turning to oil casing internal thread area is thickeied into size requirement, later again in turnery processing first
Screw thread 22.Main part other end turning to tubing and casing external screw thread area is thickeied into size requirement, later the outer spiral shell of turnery processing first again
Line 21.Finally, being surface-treated to the surfaces externally and internally of main part according to the surface requirements of tubing and casing, obtaining tubing and casing.
Fig. 1 and Fig. 2 are please referred to, a kind of specific embodiment party of the method for tubing and casing is remanufactured as drilling rod provided by the invention
Formula, the front end of drilling rod include preceding thick section 11, and rear end includes rear thick section 13, and the inner wall of preceding 11 front end of thick section is equipped in second
Screw thread forms female end, and the outer wall of rear 13 rear end of thick section is equipped with the second external screw thread and forms male end；By the interior spiral shell of drilling rod
Line end and male end excision include:
By the front end mute of preceding thick section 11, by the rear tip cut-off of rear thick section 13；
The front-end and back-end of main part process respectively the first external screw thread 21 and with the first external screw thread 21 corresponding first
Internal screw thread 22 includes:
Preceding 11 rear end of thick section and 13 front end of rear thick section process respectively the first external screw thread 21 and with the first external screw thread 21
Corresponding first internal screw thread 22.
Specifically, jackrod structure mainly includes sequentially connected preceding thick section 11, interlude 12 and rear thick section 13.It will be interior
Screw thread tip cut-off retains preceding 11 rear end of thick section, and processes the first external screw thread 21 on preceding 11 rear end of thick section, can guarantee
The intensity of one external screw thread 21.Male end is cut off, 13 front end of thick section after reservation, and processes on rear 13 front end of thick section
One internal screw thread 22, can guarantee the intensity of internal screw thread.
Fig. 1 and Fig. 2 are please referred to, a kind of specific embodiment party of the method for tubing and casing is remanufactured as drilling rod provided by the invention
Formula, drilling rod further include the interlude 12 being connected between preceding thick section 11 and rear thick section 13；By the female end of drilling rod and
Male end excision, before obtaining main part further include:
The straight degree of interlude 12 is measured, chooses and meets the drilling rod that predetermined straight degree requires.
Specifically, the straight degree of drilling rod interlude 12 should meet predetermined straight degree and require, to guarantee that the tubing and casing produced is straight
Degree meets the requirements.Predetermined straight degree requirement can require to obtain according to the straight degree of tubing and casing, such as can want with the straight degree of tubing and casing
Ask identical or bigger.Drilling rod cannot have obvious bending, if the straight degree of drilling rod interlude 12 is not able to satisfy predetermined straight degree and requires, can lead to
Straightener is crossed to be straightened drilling rod.
A kind of specific embodiment of the method for tubing and casing is remanufactured as drilling rod provided by the invention, measures interlude 12
Straight degree, choose and meet the drilling rod that predetermined straight degree requires and include:
Interlude 12 deviates straight line or action is no more than the 0.2% of 12 total length of interlude, while interlude 12 deviates directly
Line or action should meet the deviation distance in 12 1.5 meters of every end length range of interlude no more than 3.18 millimeters.
Fig. 1 and Fig. 2 are please referred to, a kind of specific embodiment party of the method for tubing and casing is remanufactured as drilling rod provided by the invention
Formula, drilling rod further include the interlude 12 being connected between preceding thick section 11 and rear thick section 13；By the female end of drilling rod and
Male end excision, before obtaining main part further include:
The ovality of 12 outer wall of interlude is measured, ovality is chosen and meets the drilling rod that predetermined ovality requires.
Specifically, predetermined ovality requires to require to determine according to the ovality of tubing and casing, such as can be with tubing and casing
Ovality require it is identical.Predetermined ovality requires the maximum ovality that can be 12 outer wall of interlude to be no more than 2.4 millimeters.Inspection
When testing, the outer diameter of drilling rod interlude 12 is examined with mechanical calliper, keeps calliper vertical with interlude 12, rotary drill rod, along centre
The mobile calliper of 12 length directions of section, every 1.5 meters are examined once, and drilling rod at least rotates a circle.
Fig. 1 and Fig. 2 are please referred to, a kind of specific embodiment party of the method for tubing and casing is remanufactured as drilling rod provided by the invention
Formula, drilling rod further include the interlude 12 being connected between preceding thick section 11 and rear thick section 13；By the female end of drilling rod and
Male end excision, before obtaining main part further include:
The wall thickness of interlude 12 is measured, the drilling rod that wall thickness meets predetermined wall thickness requirement is chosen.
Specifically, with sonigauge around drilling rod circumference wall-thickness measurement.Predetermined wall thickness requires to can be 12 wall of interlude
Thickness is not less than 70 the percent of drilling rod nominal wall thickness.
A kind of specific embodiment of the method for tubing and casing is remanufactured as drilling rod provided by the invention, measures interlude 12
Wall thickness, choose wall thickness meet predetermined wall thickness requirement drilling rod include:
It is recessed to determine to subtract the depth of recess with the neighbouring average wall thickness that is recessed for the depth being recessed on measurement 12 wall surface of interlude
Residual wall thickness under falling into；Cup depth is chosen less than or equal to 4.8mm and residual wall thickness is more than or equal to drilling rod nominal wall thickness percentage
70 drilling rod.
Specifically, the depth being recessed on 12 wall surface of interlude is measured, including measures 12 inner wall of interlude and outer wall respectively
The defects of depth being recessed on face, recess includes etch pit, notch, bites.It can be using sonigauge around drilling rod circumference
Wall-thickness measurement.
A kind of specific embodiment that the method for tubing and casing is remanufactured as drilling rod provided by the invention, in by drilling rod
The end of thread and male end excision, before obtaining main part further include:
It checks the defect inside drilling rod, chooses internal flaw and meet the drilling rod that predetermined internal flaw requires.
Specifically, using the crackle inside exchange magnetic yoke dry magnetic particle check-up drilling rod, there is any crack defect, drilling rod
Directly scrap.
Referring to Fig. 2, remanufacturing a kind of specific embodiment of the method for tubing and casing as drilling rod provided by the invention, press
According to the surface requirements of tubing and casing, carrying out surface treatment to main part includes:
Shot Blasting is carried out to body outer wall；
The former coating of main part inner wall is used into high temperature ablation, blasting treatment is carried out to main part inner wall later；
It coats to form the dedicated inner coating of tubing and casing in main part inner wall.
Specifically, body outer wall uses Shot Blasting.The former coating on main part inner wall is burnt up using cleaning furnace, is used
Blasting treatment is clean by inner wall cleaning, and inner-wall spraying forms the dedicated inner coating of tubing and casing later.It can also be outside tubing and casing finished product
Surface need to apply antirust oil.
A kind of tubing and casing remanufactures the method production of tubing and casing using the drilling rod of any of the above item.Tubing and casing has higher
Stretch-proof, torsional pulse load ability.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of method that drilling rod remanufactures tubing and casing characterized by comprising
The female end of drilling rod and male end are cut off, main part is obtained；
The front-end and back-end of the main part process respectively the first external screw thread (21) and with first external screw thread (21) it is opposite
The first internal screw thread (22) answered；
The main part is surface-treated；
Obtain tubing and casing.
2. the method that drilling rod as described in claim 1 remanufactures tubing and casing, it is characterised in that: before the front end of the drilling rod includes
Thick section (11), rear end include rear thick section (13), the inner wall of preceding thick section (11) front end be equipped with the second female thread at
The female end, the outer wall of described rear thick section (13) rear end are equipped with the second external screw thread and form the male end；It is described to incite somebody to action
The female end and male end of drilling rod are cut off
By the front end mute of the preceding thick section (11), will it is described after thick section (13) rear tip cut-off；
The front-end and back-end in the main part process respectively the first external screw thread (21) and with first external screw thread (21)
Corresponding first internal screw thread (22) includes:
Preceding thick section (11) rear end and it is described after thick section (13) front end process respectively first external screw thread (21) and
First internal screw thread (22) corresponding with the first external screw thread (21).
3. the method that drilling rod as claimed in claim 2 remanufactures tubing and casing, it is characterised in that: the drilling rod further includes being connected to
Interlude (12) between the preceding thick section (11) and the rear thick section (13)；In the female end by drilling rod and outside
Screw thread tip cut-off, before obtaining main part further include:
The straight degree of the interlude (12) is measured, chooses and meets the drilling rod that predetermined straight degree requires.
4. the method that drilling rod as claimed in claim 3 remanufactures tubing and casing, it is characterised in that: the measurement interlude
(12) straight degree, choosing the drilling rod for meeting and making a reservation for directly spend requirement includes:
The interlude (12) deviates straight line or action is no more than the 0.2% of the interlude (12) total length, at the same it is described in
Between section (12) deviate straight line or action and should meet the deviation distance in the length range of 1.5 meters of every end of the interlude (12) not
More than 3.18 millimeters.
5. the method that drilling rod as claimed in claim 2 remanufactures tubing and casing, it is characterised in that: the drilling rod further includes being connected to
Interlude (12) between the preceding thick section (11) and the rear thick section (13)；In the female end by drilling rod and outside
Screw thread tip cut-off, before obtaining main part further include:
The ovality of the interlude (12) outer wall is measured, ovality is chosen and meets the drilling rod that predetermined ovality requires.
6. the method that drilling rod as described in claim 1 remanufactures tubing and casing, it is characterised in that: the drilling rod further includes being connected to
Interlude (12) between the preceding thick section (11) and the rear thick section (13)；In the female end by drilling rod and outside
Screw thread tip cut-off, before obtaining main part further include:
The wall thickness of the interlude (12) is measured, the drilling rod that wall thickness meets predetermined wall thickness requirement is chosen.
7. the method that drilling rod as claimed in claim 6 remanufactures tubing and casing, it is characterised in that: the measurement interlude
(12) wall thickness, the drilling rod that selection wall thickness meets predetermined wall thickness requirement include:
The depth being recessed on the interlude (12) wall surface is measured, subtracts the depth of recess with the neighbouring average wall thickness that is recessed to determine
Residual wall thickness under recess；Cup depth is chosen less than or equal to 4.8mm and residual wall thickness is more than or equal to drilling rod nominal wall thickness hundred
/ seven ten drilling rod.
8. the method that drilling rod as described in claim 1 remanufactures tubing and casing, it is characterised in that: in the internal screw thread by drilling rod
End and male end excision, before obtaining main part further include:
It checks the defect inside drilling rod, chooses internal flaw and meet the drilling rod that predetermined internal flaw requires.
9. the method that drilling rod as claimed in any one of claims 1 to 8 remanufactures tubing and casing, it is characterised in that: described according to oil
The surface requirements of casing, carrying out surface treatment to the main part includes:
Shot Blasting is carried out to the body outer wall；
The former coating of the main part inner wall is used into high temperature ablation, blasting treatment is carried out to the main part inner wall later；
It coats to form the dedicated inner coating of tubing and casing in the main part inner wall.
10. a kind of tubing and casing, it is characterised in that: remanufacture tubing and casing using drilling rod as described in any one of claim 1 to 9
Method production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983385.6A CN109128699B (en) | 2018-08-27 | 2018-08-27 | Method for remanufacturing oil casing from drill rod and oil casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983385.6A CN109128699B (en) | 2018-08-27 | 2018-08-27 | Method for remanufacturing oil casing from drill rod and oil casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109128699A true CN109128699A (en) | 2019-01-04 |
| CN109128699B CN109128699B (en) | 2020-07-28 |
Family
ID=64828390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810983385.6A Active CN109128699B (en) | 2018-08-27 | 2018-08-27 | Method for remanufacturing oil casing from drill rod and oil casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109128699B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104466A (en) * | 1988-10-07 | 1990-04-17 | Mazda Motor Corp | Production of fiber reinforced sliding member |
| CN101947714A (en) * | 2010-08-19 | 2011-01-19 | 杨永利 | Integral processing method for refabrication of waste oil tube |
| CN202123345U (en) * | 2011-06-16 | 2012-01-25 | 山东明珠石油装备制造有限公司 | Repair drill rod |
| CN103008979A (en) * | 2011-09-23 | 2013-04-03 | 吕少华 | Production and refabrication technology for upsetting-type hollow sucker rod |
| CN103831596A (en) * | 2014-03-28 | 2014-06-04 | 淄博弘扬石油设备集团有限公司 | Method for repairing old pipes for water injection well |
| CN105333238A (en) * | 2015-08-26 | 2016-02-17 | 杨永利 | Metal ceramic composite oil tube formed by remanufacturing waste oil tube and waste oil tube remanufacturing technology |
| CN108188749A (en) * | 2018-02-07 | 2018-06-22 | 宁夏长鑫防腐工程有限公司 | The technique and processing unit that a kind of waste and old beam hanger remanufactures |
-
2018
- 2018-08-27 CN CN201810983385.6A patent/CN109128699B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104466A (en) * | 1988-10-07 | 1990-04-17 | Mazda Motor Corp | Production of fiber reinforced sliding member |
| CN101947714A (en) * | 2010-08-19 | 2011-01-19 | 杨永利 | Integral processing method for refabrication of waste oil tube |
| CN202123345U (en) * | 2011-06-16 | 2012-01-25 | 山东明珠石油装备制造有限公司 | Repair drill rod |
| CN103008979A (en) * | 2011-09-23 | 2013-04-03 | 吕少华 | Production and refabrication technology for upsetting-type hollow sucker rod |
| CN103831596A (en) * | 2014-03-28 | 2014-06-04 | 淄博弘扬石油设备集团有限公司 | Method for repairing old pipes for water injection well |
| CN105333238A (en) * | 2015-08-26 | 2016-02-17 | 杨永利 | Metal ceramic composite oil tube formed by remanufacturing waste oil tube and waste oil tube remanufacturing technology |
| CN108188749A (en) * | 2018-02-07 | 2018-06-22 | 宁夏长鑫防腐工程有限公司 | The technique and processing unit that a kind of waste and old beam hanger remanufactures |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109128699B (en) | 2020-07-28 |
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