CN1097838A - A kind of renovation technique that improves strength of oil pump rod - Google Patents
A kind of renovation technique that improves strength of oil pump rod Download PDFInfo
- Publication number
- CN1097838A CN1097838A CN 93111358 CN93111358A CN1097838A CN 1097838 A CN1097838 A CN 1097838A CN 93111358 CN93111358 CN 93111358 CN 93111358 A CN93111358 A CN 93111358A CN 1097838 A CN1097838 A CN 1097838A
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- CN
- China
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- sucker rod
- rod
- oil pump
- renovation technique
- sucker
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- 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.)
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- Heat Treatment Of Articles (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A kind of renovation technique that improves strength of oil pump rod, to retired low intensive sucker rod select bar, oil removing, bar head 1 and the body of rod 2 detections, pin thread reparation, aligning, the whole mid frequency induction hardening tempering of sucker rod, the whole high-frequency quenching of sucker rod, throwing pill strengthening successively, at last through bar head 1 and the body of rod 2 flaw detections are produced the sucker rod that has improved intensity.
Description
The present invention relates to a kind of renovation technique field of improving strength of oil pump rod.
At present, the sucker rod that uses on the oil well in oil field will replace when reaching certain military service after date at home, carry out same level one promptly with the sucker rod reparation of intensity, after the sucker rod reparation, do not improve the renovation technique that sucker rod rank one promptly improves strength of oil pump rod, do not have this document abroad yet and can consult.
The objective of the invention is: provide a kind of and its intensity is improved by repairing retired low-intensity sucker rod, can be as the renovation technique of dark oil well with the raising strength of oil pump rod of sucker rod.
The present invention be achieved in that to retired low-intensity sucker rod select successively that bar, oil removing, bar head 1 and the body of rod 2 detections, pin thread reparation, bridge are straight, the whole mid frequency induction hardening tempering of sucker rod, the whole high-frequency quenching of sucker rod, throwing pill strengthening, at last through bar head 1 and the body of rod 2 flaw detections are produced the sucker rod that has improved intensity.
During the whole mid frequency induction hardening tempering of sucker rod, the sucker rod speed of travel be 3-4 rice/minute, frequency is the 2500-8000 hertz, the heating sucker rod is to 750-900 ℃ of jet hardening, natural tempering.
During the whole high-frequency quenching of sucker rod: the sucker rod speed of travel be 2-3 rice/minute, frequency is the 25000-35000 hertz, the heating sucker rod is to 750-900 ℃ of jet hardening.
Advantage of the present invention is: by this renovation technique, make retired low-intensity sucker rod improve intensity, can be used as dark oil well sucker rod.
Below in conjunction with accompanying drawing, the present invention will be further described with embodiment:
This accompanying drawing is the sucker rod structural representation.
In the accompanying drawing: 1, bar head, 2, the body of rod.
Retired low-intensity sucker rod is selected bar earlier, promptly should pick out fracture, crooked sucker rod excessive or that corrosion is serious; Remaining sucker rod is carried out oil removing, promptly body of rod surface and oil contaminant is removed with diesel oil or cleaning agent; Sucker rod after the oil removing carries out bar head and the body of rod and detects, and promptly to the magnetic powder inspection of bar head, with defectiveness whether on the inspection bar head, whether body of rod eddy current inspection has whether defectiveness of fatigue damage and body of rod surface with the inspection body of rod; Sucker rod after detecting is carried out the pin thread reparation, promptly use the screw thread on the pin thread reparation machine maintenance compound lever head, its dimensional accuracy meets U.S. API standard; Sucker rod behind the reparation pin thread is aligned, and adopts straightener that sucker rod is carried out straightening processing, to reach the straightness accuracy requirement; To the aligning after sucker rod carry out whole mid frequency induction hardening tempering, the sucker rod speed of travel be 3-4 rice/minute, frequency is the 2500-8000 hertz, the heating sucker rod to 750-900 ℃ of jet hardening, natural tempering; Sucker rod behind the intermediate frequency Q-tempering is carried out whole high-frequency quenching, the sucker rod speed of travel be 2-3 rice/minute, frequency is the 25000-35000 hertz, the heating sucker rod to 750-900 ℃ of jet hardening; Sucker rod behind the high-frequency quenching is carried out throwing pill strengthening, to improve sucker rod fatigue strength; At last through bar head and body of rod flaw detection are produced the sucker rod that has improved intensity, then to this sucker rod dipping lacquer, to helmet on the screw thread on the sucker rod head.
Adopt the sucker rod of this renovation technique reparation can make old C grade pumping rod become the D grade pumping rod, make old D grade pumping rod become tensile strength greater than more high-intensity sucker rod more than the 980MPa.
Claims (3)
1, a kind of renovation technique that improves strength of oil pump rod is characterized in that: to retired low-intensity sucker rod select bar, oil removing, bar head 1 and the body of rod 2 detections, pin thread reparation, aligning, the whole mid frequency induction hardening tempering of sucker rod, the whole high-frequency quenching of sucker rod, throwing pill strengthening successively, at last through bar head 1 and the body of rod 2 flaw detections are produced the sucker rod that has improved intensity.
2, according to right 1 described a kind of renovation technique that improves strength of oil pump rod, it is characterized in that: during the whole mid frequency induction hardening tempering of sucker rod, the sucker rod speed of travel be 3-4 rice/minute, frequency is the 2500-8000 hertz, the heating sucker rod is to 750-900 ℃ of jet hardening, natural tempering.
3, a kind of renovation technique that improves strength of oil pump rod according to claim 1 and 2, it is characterized in that: during sucker rod integral body high-frequency quenching, the sucker rod speed of travel be 2-3 rice/minute, frequency is the 25000-35000 hertz, the heating sucker rod to 750-900 ℃ of jet hardening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111358 CN1097838A (en) | 1993-07-20 | 1993-07-20 | A kind of renovation technique that improves strength of oil pump rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111358 CN1097838A (en) | 1993-07-20 | 1993-07-20 | A kind of renovation technique that improves strength of oil pump rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1097838A true CN1097838A (en) | 1995-01-25 |
Family
ID=4989146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93111358 Pending CN1097838A (en) | 1993-07-20 | 1993-07-20 | A kind of renovation technique that improves strength of oil pump rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1097838A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772598A (en) * | 2015-04-24 | 2015-07-15 | 孙伟 | Method for compositely repairing scraped polish rod of pumping unit |
| CN106189203A (en) * | 2016-07-13 | 2016-12-07 | 胜利油田现河工贸有限责任公司 | A kind of local route repair process of old cladding sucker rod |
| CN108381114A (en) * | 2018-02-07 | 2018-08-10 | 宁夏长鑫防腐工程有限公司 | Old pumping rod fatigue strength restores technique and its device |
-
1993
- 1993-07-20 CN CN 93111358 patent/CN1097838A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772598A (en) * | 2015-04-24 | 2015-07-15 | 孙伟 | Method for compositely repairing scraped polish rod of pumping unit |
| CN106189203A (en) * | 2016-07-13 | 2016-12-07 | 胜利油田现河工贸有限责任公司 | A kind of local route repair process of old cladding sucker rod |
| CN106189203B (en) * | 2016-07-13 | 2019-01-08 | 胜利油田现河工贸有限责任公司 | A kind of local route repair process of old cladding sucker rod |
| CN108381114A (en) * | 2018-02-07 | 2018-08-10 | 宁夏长鑫防腐工程有限公司 | Old pumping rod fatigue strength restores technique and its device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |