CN202012297U - Anti-corrosion sucker rod - Google Patents
Anti-corrosion sucker rod Download PDFInfo
- Publication number
- CN202012297U CN202012297U CN2011200314867U CN201120031486U CN202012297U CN 202012297 U CN202012297 U CN 202012297U CN 2011200314867 U CN2011200314867 U CN 2011200314867U CN 201120031486 U CN201120031486 U CN 201120031486U CN 202012297 U CN202012297 U CN 202012297U
- Authority
- CN
- China
- Prior art keywords
- rod
- corrosion
- sucker rod
- layer
- modified epoxy
- 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.)
- Expired - Lifetime
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The utility model discloses an anti-corrosion sucker rod in the oil recovery equipment field, including a rod body and a rod head arranged on two ends of the rod body; the external threads for connection are provided on the end portion of the rod head; the internal and external polymer coatings are provided on the outer surfaces of the rod body and the rod head; the internal layer polymer coating is the phenolic aldehyde coating layer; and the external layer polymer coating is the modified epoxy resin layer. In the utility model, the phenolic aldehyde coating layer is spray-printed between the modified epoxy resin layer and a metal surface so as to make the modified epoxy resin better adhere outside the metal material. The anti-corrosion sucker rod has the high corrosion resistance and wear resistance in the complicated oil gas recovery condition, effectively alleviates paraffin deposit and scale formation on the surface of the sucker rod depending on a smooth surface, reduces the downhole friction resistance and improves the oil pumping efficiency. Therefore, the utility model effectively protects the sucker rod in a long term in the corrosion and abrasion medium of the high-water-cut oil-producing well and greatly increases the service life of the sucker rod.
Description
Technical field
The utility model relates to a kind of oil production equipment, particularly a kind of sucker rod.
Background technology
Sucker rod is one of vitals of oil exploitation sucker rod pumping, its long-term work is in the underground oil-water medium, along with oil field development enters the middle and later periods, water content in the produced liquid in oil well is more and more higher, and with corrosive mediums such as carbon dioxide, hydrogen sulfide and bacteriums, therefore, the corrosion and the wear problem of sucker rod become increasingly conspicuous, corrosion and wearing and tearing reduce the life-span of sucker rod significantly, replacement cycle shortens significantly, cause many oil wells because of sucker rod corrosion and the frequent operation of wear out failure, cost increases, and influences field output simultaneously.Corrosion and the wear out failure eliminating and slow down sucker rod have become extremely urgent problem, corrosion-resistant and wear failure problem at sucker rod, the domestic anticorrosion and wear-resisting method of raising commonly used in the past mainly contains high-frequency heating sucker rod is carried out hard surfacing, the sucker rod surface is electroplated or chemical plating, pit shaft adds corrosion inhibiter etc., but these method corrosion mitigating effects are all not very good.
In the prior art, a kind of super H-grade antiseptic smooth sucker rod is arranged, its application number: 200610114694.7, the applying date: 2006-11-21, its two ends at the body of rod are provided with external screw thread, can be connected with rod collar, be coated with one deck corrosion resisting alloy coating at the polished rod external surface, the body of rod adopts low-alloy steel to make, and the tensile strength of polished rod surpasses the 1136MPA of H level, and fatigue strength reaches the petroleum industry standard simultaneously.This polished rod is applicable to load is required oil well big, the working environment seriously corroded, can prolong the application life of polished rod, improve oil field development output, but its corrosion mitigating effect is not very good.
The utility model content
The purpose of this utility model is in order to overcome above-mentioned deficiency, a kind of anti-corrosion pumping bar to be provided, to improve its anticorrosion, anti-wear performance.
The utility model is realized with the following method: a kind of anti-corrosion pumping bar, comprise the bar head that the body of rod and body of rod two ends are provided with, rod head end portion is provided with the external screw thread that connects usefulness, be provided with inside and outside two-layer polymeric coating layer at the body of rod and bar head external surface, the polymeric coating layer of internal layer is the phenolic coating layer, and outer field polymeric coating layer is the modified epoxy layer.
The utility model adopts spraying phenolic coating layer between modified epoxy layer and metal surface, makes that modified epoxy can be better attached to outside the metal material.The utility model has the advantages that: under the complex hydrocarbon mining conditions, have higher corrosion resistance and abrasion resistance; Owing to smooth surface, slow down the wax deposition and the fouling on sucker rod surface effectively simultaneously, reduced down-hole frictional resistance, improved pumping efficiency.Therefore, adopt this anti-corrosion pumping bar, can in the corrosion and abrasion medium of high-water-cut oil-producing well, protect sucker rod long-term effectively, increase substantially its application life.
Description of drawings
Fig. 1 is the structural representation of the utility model anti-corrosion pumping bar.
Fig. 2 is the A place profile of Fig. 1.
Among the figure, 1 body of rod, 2 phenolic coating layers, 3 modified epoxy layers, 4 bar heads, 401 external screw threads.
The specific embodiment
As illustrated in fig. 1 and 2, be a kind of anti-corrosion pumping bar, comprise the bar head 4 that the body of rod 1 and body of rod two ends are provided with, bar head 4 ends are provided with the external screw thread 401 that connects usefulness, be provided with inside and outside two-layer polymeric coating layer at the body of rod 1 and bar head 4 external surfaces, the polymeric coating layer of internal layer is a phenolic coating layer 2, and outer field polymeric coating layer is a modified epoxy layer 3.
When it is made, earlier sucker rod is immersed in and cleans its surperficial greasy dirt and booty in the hot coal oil, blasting treatment again, then, behind spraying one deck phenolic coating on the bar head and the body of rod, be placed in the heating furnace again and heat, on the body of rod, evenly spray one deck modified epoxy again, enter heating furnace then and use epoxy coating is carried out baking and curing, carry out the holiday check at last and utilize repair liquid that holiday is repaired.Above-mentioned modified epoxy can adopt modified epoxies such as acrylic acid toughening modifying epoxy resin, polyurethane toughened epoxy resin or bi-maleimide modified epoxy resin.
Claims (1)
1. anti-corrosion pumping bar, comprise the bar head that the body of rod and body of rod two ends are provided with, rod head end portion is provided with the external screw thread that connects usefulness, it is characterized in that: be provided with inside and outside two-layer polymeric coating layer at the body of rod and bar head external surface, the polymeric coating layer of internal layer is the phenolic coating layer, and outer field polymeric coating layer is the modified epoxy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200314867U CN202012297U (en) | 2011-01-28 | 2011-01-28 | Anti-corrosion sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200314867U CN202012297U (en) | 2011-01-28 | 2011-01-28 | Anti-corrosion sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202012297U true CN202012297U (en) | 2011-10-19 |
Family
ID=44782909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200314867U Expired - Lifetime CN202012297U (en) | 2011-01-28 | 2011-01-28 | Anti-corrosion sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202012297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074470A (en) * | 2014-06-11 | 2014-10-01 | 济南琪玙复合材料技术开发有限公司 | High-temperature-resistant wear-resistant anti-corrosive composite sucker rod and preparing method |
-
2011
- 2011-01-28 CN CN2011200314867U patent/CN202012297U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074470A (en) * | 2014-06-11 | 2014-10-01 | 济南琪玙复合材料技术开发有限公司 | High-temperature-resistant wear-resistant anti-corrosive composite sucker rod and preparing method |
| CN104074470B (en) * | 2014-06-11 | 2017-02-15 | 济南琪玙复合材料技术开发有限公司 | High-temperature-resistant wear-resistant anti-corrosive composite material sucker rod and preparing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111019 |