CN102121359A - Method for repairing old oil pipes - Google Patents
Method for repairing old oil pipes Download PDFInfo
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- CN102121359A CN102121359A CN2011100815225A CN201110081522A CN102121359A CN 102121359 A CN102121359 A CN 102121359A CN 2011100815225 A CN2011100815225 A CN 2011100815225A CN 201110081522 A CN201110081522 A CN 201110081522A CN 102121359 A CN102121359 A CN 102121359A
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- old oil
- oil pipes
- pressure
- old
- oil pipe
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Abstract
The invention provides a method for repairing old oil pipes, comprising the following steps of: washing the old oil pipes which are used by a pumping well and abraded by a pumping rod, and testing pressure; selecting the old oil pipes without leaking and with the tested pressure of 5 MPa; washing the old oil pipes by acid for removing rust, polishing and galling the inner surface; cutting off screw threads on two ends; processing new screw threads again, after the screw threads are processed qualifiedly, placing the oil pipes on a rotational molding machine; taking the old oil pipes needing repairing as molds, rotationally molding the inner surfaces of the old oil pipes, wherein the rotational molding thickness is 0.5-10.0mm; testing the pressure of the rotationally molded old oil pipes, wherein the testing pressure is larger than 20 MPa, and the pressure does not descend in 5 min, and the surface of the old oil pipe does not leak. The method in the invention rotationally molds nano modified ultra high molecular polyethylene powder into the inner wall of the old oil pipe, and strengthens the inner pressure resistance, anticorrosion, abrasion resistance and scale-inhibiting performances of the old oil pipes; furthermore, the method can enable the old oil pipes to be used in the production of the pumping well or a water injection well, reduce the input of new oil pipes, and have a prominent economic effect.
Description
Technical field
The present invention is the down-hole oil tube method for maintaining that oil exploitation is used, and is a kind of old oil pipe restorative procedure.
Prior art
Oil pipe on the pump that pumpingh well is used is owing to will contact with sucker rod, tube inner wall is worn easily, just can not use after may wear to a certain degree, only be in the state of scrapping, the method of the employing liner high-density polyethylene plastics pipe that has is repaired it, tube inner wall after owing to be worn is fluted, liner high-density polyethylene plastics pipe can't be fitted with tube wall, between liner high-density polyethylene plastics tube and tube wall the space is arranged, under high temperature, low temperature, high pressure, low pressure alternating action, liner high-density polyethylene plastics pipe is easily damaged.Therefore, the restorative procedure of employing liner high-density polyethylene plastics pipe can not solve the reparation problem of the old oil pipe that is worn, and causes a large amount of old oil pipe learies in oil field big, has only a large amount of fresh oil pipes of input to keep oil well production, and oil field development is of poor benefits.
Summary of the invention
The purpose of this invention is to provide a kind of old oil pipe restorative procedure, make its old oil pipe that in pumpingh well, is worn obtain repairing and utilize, reduce the oil field and drop into, improve the oil field development benefit.
The object of the present invention is achieved like this: used the old oil pipe that is worn and torn by sucker rod to clean pressure testing pumpingh well, select the old oil pipe of pressure testing 5MPa no seepage and no leakage, it is carried out pickling remove embroidery, polishing, plucking inner surface, excision two ends screw thread, again process new screw thread, put on the rotational moulding machine after screw thread processing is qualified, old oil pipe with the needs reparation is a mould, old pipe inner surface is carried out rotational moulding, rotational moulding thickness is 0.5-10.0mm, and to the old oil pipe pressure testing after the rotational moulding, test pressure is greater than 20MPa, 5min pressure does not fall, old oil pipe surface no seepage and no leakage.
Beneficial effect of the present invention: old tube inner wall is arrived in the rotational moulding of nano level modified ultra high molecular polyethylene powder, strengthened in old oil pipe anti-press, the performance of anticorrosion, wear-resisting, scale inhibition, can make old oil pipe be used further to pumpingh well or water injection well production, reduce a large amount of new oil pipe pipes and drop into, have remarkable economic efficiency.
The specific embodiment
Used the old oil pipe that is worn and torn by sucker rod to clean pressure testing pumpingh well, select the old oil pipe of pressure testing 5MPa no seepage and no leakage, it is carried out pickling remove embroidery, polishing, the plucking inner surface, excision two ends screw thread, again process new screw thread, put on the rotational moulding machine after screw thread processing is qualified, old oil pipe with the needs reparation is a mould, and old pipe inner surface is carried out rotational moulding, and old tube inner wall is arrived in the rotational moulding of nano level modified ultra high molecular polyethylene powder, rotational moulding thickness is 0.5-10.0mm, the wearing and tearing groove of old pipe inner surface is filled and led up, and to the old oil pipe pressure testing after the rotational moulding, test pressure is greater than 20MPa, 5min pressure does not fall, old oil pipe surface no seepage and no leakage.
Claims (1)
1. old oil pipe restorative procedure, it is characterized in that: used the old oil pipe that is worn and torn by sucker rod to clean pressure testing pumpingh well, select the old oil pipe of pressure testing 5MPa no seepage and no leakage, it is carried out pickling remove embroidery, polishing, plucking inner surface, excision two ends screw thread, again process new screw thread, put on the rotational moulding machine after screw thread processing is qualified, old oil pipe with the needs reparation is a mould, and old pipe inner surface is carried out rotational moulding, and rotational moulding thickness is 0.5-10.0mm, to the old oil pipe pressure testing after the rotational moulding, test pressure is greater than 20MPa, and 5min pressure does not fall, old oil pipe surface no seepage and no leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100815225A CN102121359A (en) | 2011-03-24 | 2011-03-24 | Method for repairing old oil pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100815225A CN102121359A (en) | 2011-03-24 | 2011-03-24 | Method for repairing old oil pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102121359A true CN102121359A (en) | 2011-07-13 |
Family
ID=44250007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100815225A Pending CN102121359A (en) | 2011-03-24 | 2011-03-24 | Method for repairing old oil pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102121359A (en) |
Cited By (6)
| 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 |
| CN105202276A (en) * | 2015-10-20 | 2015-12-30 | 伊荣德滚塑管业（深圳）有限公司 | Renovation process method of old seawater carbon steel pipeline |
| 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 |
| CN106939776A (en) * | 2017-03-28 | 2017-07-11 | 王仁刚 | A kind of method for preventing oil pumper from thering is polished rod oil well to be missed with packing |
| CN109611046A (en) * | 2018-03-12 | 2019-04-12 | 刘屹凡 | A kind of petroleum pipeline tool prosthetic device |
| CN116575869A (en) * | 2023-05-17 | 2023-08-11 | 延安嘉盛石油机械有限责任公司 | Oil pipe threaded connection structure and waste oil pipe circulating remanufacturing method |
-
2011
- 2011-03-24 CN CN2011100815225A patent/CN102121359A/en active Pending
Cited By (10)
| 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 |
| CN105202276A (en) * | 2015-10-20 | 2015-12-30 | 伊荣德滚塑管业（深圳）有限公司 | Renovation process method of old seawater carbon steel pipeline |
| CN105202276B (en) * | 2015-10-20 | 2017-11-17 | 伊荣德滚塑管业（深圳）有限公司 | The renovation technology method of the old carbon steel piping of seawater |
| 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 |
| CN109572006A (en) * | 2016-07-13 | 2019-04-05 | 范秀红 | A kind of sucker rod renovation technique |
| CN106939776A (en) * | 2017-03-28 | 2017-07-11 | 王仁刚 | A kind of method for preventing oil pumper from thering is polished rod oil well to be missed with packing |
| CN109611046A (en) * | 2018-03-12 | 2019-04-12 | 刘屹凡 | A kind of petroleum pipeline tool prosthetic device |
| CN109611046B (en) * | 2018-03-12 | 2021-04-06 | 东营市科创石油装备有限公司 | Petroleum pipe tool repairing device |
| CN116575869A (en) * | 2023-05-17 | 2023-08-11 | 延安嘉盛石油机械有限责任公司 | Oil pipe threaded connection structure and waste oil pipe circulating remanufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110713 |