CN218876499U - Wear-resistant and corrosion-resistant petroleum special pipeline - Google Patents
Wear-resistant and corrosion-resistant petroleum special pipeline Download PDFInfo
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- CN218876499U CN218876499U CN202122775523.1U CN202122775523U CN218876499U CN 218876499 U CN218876499 U CN 218876499U CN 202122775523 U CN202122775523 U CN 202122775523U CN 218876499 U CN218876499 U CN 218876499U
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Abstract
The utility model relates to a wear-resisting anticorrosion oil dedicated pipeline, it includes pipeline body, boronizing eutectic layer and boronizing layer in proper order, and the combination mode between the pipeline body of this pipeline, boronizing eutectic layer and the boronizing layer is the metallurgical bonding. The utility model discloses mainly used oil special pipeline, this pipeline not only hardness is very high, and wear resistance is good, very big improvement the pipeline ability of being able to bear or endure the eccentric wear and resistant fluid erode, have good corrosion resisting property to acid medium corruption (remove nitric acid) moreover. Meanwhile, due to the fact that the boronized eutectic layer is arranged, the brittleness of the pipeline is reduced, the toughness of the pipeline is improved, and the pipeline can bear larger impact force.
Description
Technical Field
The utility model relates to the field of pipelines, especially, relate to a special pipeline of wear-resisting anticorrosion oil.
Background
The special petroleum pipeline is important petroleum equipment indispensable for oil field production, and the service life of the special petroleum pipeline directly determines the stability and the economical efficiency of the oil field production. With the continuous excavation and exploitation of oil fields, more and more oil fields face the problems that the oil extraction pipeline fails due to the friction between the sucker rod and the pipe wall, and the oil pipeline fails due to the scouring friction of gravel in crude oil on the pipe wall.
In practice, the acidity of some oil wells is high, so that the special petroleum pipeline is in service in an acidic environment for a long time to cause corrosion failure, and the safety and the development efficiency of oil field production are seriously influenced by the conditions.
At present, about 80 percent of oil wells in most oil fields of China use pumping units to carry out oil extraction operation. The work load of the oil well pump inspection operation caused by eccentric wear accounts for 50% of the total work load of the oil pumping well pump inspection operation all the year round, and the service life of an oil pipeline is shortened by 40% -70% due to eccentric wear corrosion.
Therefore, it is obvious that the existing petroleum dedicated pipeline still has the inconvenience and the defect, and further improvement is needed. In order to solve the problems of the existing oil dedicated pipeline, related manufacturers do not think about the solution without any effort, but no suitable design has been developed and completed for a long time, which is obviously a problem to be solved urgently by related manufacturers.
In view of the above-mentioned shortcomings of the existing petroleum pipeline, the inventor of the present invention has made extensive practical experience and professional knowledge for many years based on the design and manufacture of such products, and has actively studied and innovated in cooperation with the application of theory, in order to create a new wear-resistant and corrosion-resistant petroleum pipeline, which can improve the shortcomings of the existing petroleum pipeline and make it more practical. Through continuous research and design, and after repeated trial and improvement, the utility model with practical value is finally created.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at overcomes the defect that current oil dedicated pipeline exists, and provides a new wear-resisting anticorrosion oil dedicated pipeline, and the technical problem that solve is to the serious condition of present pipeline friction corrosion, improves the wear resistance and the corrosion resistance of pipeline to be suitable for the practicality more, and have the use value in the industry.
Another object of the present invention is to provide a wear-resistant and corrosion-resistant petroleum pipeline, which is more simple in processing technology and more practical.
The purpose of the utility model and the technical problem to be solved are realized by adopting the following technical scheme. According to the utility model provides a wear-resisting anticorrosion oil special pipeline, it includes pipeline body, boronizing eutectic layer and boronizing layer by the body in proper order to the direction of pipe wall, wherein the pipeline body with the boronizing eutectic layer between the bonding mode for metallurgical bonding, the boronizing eutectic layer with the binding mode of boronizing layer also for metallurgical bonding.
The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
The wear-resistant anti-corrosion petroleum pipeline is characterized in that the boride layer is made of single Fe 2 Phase B, or Fe 2 The phase B and the phase FeB are jointly composed.
In the wear-resistant anti-corrosion petroleum pipeline, the boronized eutectic layer is made of Fe 2 B and eutectic structure.
The thickness of the boronized eutectic layer is 20-1200 μm.
The wear-resistant anti-corrosion petroleum pipeline is characterized in that the thickness of the boration layer is 20-500 μm.
The microhardness of the boronized eutectic layer is 500 HV-1500 HV.
The wear-resistant anti-corrosion petroleum pipeline is characterized in that the micro-hardness of the boride layer is 800 HV-2200 HV.
Compared with the prior art, the utility model obvious advantage and beneficial effect have. According to the above technical solution, in order to achieve the purpose of the present invention, the main technical contents of the present invention are as follows:
the utility model provides a wear-resisting anticorrosion oil special pipeline contains oil pipe, sleeve pipe and oil pipeline, and this oil special pipeline includes oil pipelineBulk, boronized eutectic layers (inner and outer boronized eutectic layers) or boronized layers (inner and outer boronized layers). The inner and outer boronized layers or the inner and outer boronized eutectic layers are metallurgically bonded to the pipe body. The inner and outer wall boride layers are composed of Fe2B phase or Fe 2 The B phase and the FeB phase are jointly formed, and the boronized eutectic layer on the inner wall and the outer wall is Fe 2 The phase B and the eutectic are jointly composed. The inner and outer borated layers not only have very high hardness and excellent wear resistance, greatly improve the eccentric wear resistance and fluid erosion resistance of the pipeline, but also have good corrosion resistance to acid medium corrosion (except nitric acid). The inner and outer wall boronized eutectic layers are obviously superior to the boronized layer in the whole hardness gradient, the hardness value is obviously reduced slowly, the hardness value is reduced slowly from high hardness to low hardness value in the whole range of the boronized eutectic layer, the brittleness of the boronized eutectic layer is well reduced, and the boronized eutectic layer can bear larger operation impact force without brittle fracture.
Can know via the aforesaid, the utility model relates to a special pipeline of wear-resisting anticorrosion oil, it includes pipeline body, boronizing eutectic layer and boride layer in proper order, and the mode of combination between the pipeline body, boronizing eutectic layer and the boride layer of this pipeline is metallurgical bonding. The utility model discloses mainly used oil special pipeline, this pipeline not only hardness is very high, and wear resistance is good, very big improvement the pipeline ability of being able to bear or endure the eccentric wear and resistant fluid erode, have good corrosion resisting property to acid medium corruption (remove nitric acid) moreover. Meanwhile, due to the fact that the boronized eutectic layer is arranged, the brittleness of the pipeline is reduced, the toughness of the pipeline is improved, and the pipeline can bear larger impact force.
Borrow by above-mentioned technical scheme, the utility model discloses wear-resisting anticorrosion oil special pipeline has following advantage at least:
(1) The bonding mode of the boronized eutectic layer or the boronized layer and the pipeline body is metallurgical bonding, the adhesive force of the boronized eutectic layer or the boronized layer is far superior to that of a coating and a plating layer, and the condition that the boronized eutectic layer or the boronized layer falls off due to high-strength radial friction force is avoided.
(2) The hardness of the boronized eutectic layer or the boronized layer can reach 1500HV, and is more than 10 times of that of a common oil pipeline in terms of wear resistance, so that the wear corrosion degree caused by eccentric wear or fluid gravel washing is greatly reduced, the service life of the oil pipeline is prolonged, and the safety of oil operation is improved.
(3) The boronized eutectic layer or the boronized layer has good oxidation resistance at the temperature of below 600 ℃, and can maintain good performance per se in a service environment with higher temperature.
(4) The eutectic structure has alternate soft and hard phases, wherein the boronized layer has high wear resistance, and the boronized eutectic layer is firmly combined with the pipeline body.
(5) The hardness distribution curve of the eutectic structure tends to be flat, the depth of the hardened layer is increased, the toughness and the breaking strength are greatly improved compared with the boronized layer, the brittleness is greatly reduced compared with the boronized layer, and the erosion resistance is improved.
(6) The thickness of the eutectic structure is far greater than that of the boronized layer, so that the service life of the pipeline with the eutectic structure is longer than that of an oil pipeline with the boronized layer, the safety and the stability of oil operation are better ensured, and the economic benefit of an oil field is improved.
(7) In an acidic environment, the boronized eutectic layer or the boronized layer is well resistant to various acidic attacks other than nitric acid.
To sum up, the utility model discloses special wear-resisting anticorrosion petroleum dedicated pipeline it has above-mentioned a great deal of advantage and practical value to do not see the public publication or use of similar design and surely belong to the innovation in like product, it no matter structurally or function all has great improvement, has great progress technically, and produced good and practical effect, and more current oil pipeline has the multinomial efficiency of promoting, thereby be suitable for the practicality more, and have the wide use value of industry, honestly be a novel, progress, practical new design.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a sectional view of the inner wall of the pipeline for petroleum according to the present invention.
Fig. 2 is a sectional view of the outer wall of the special oil pipeline of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the wear-resistant and corrosion-resistant oil pipeline according to the present invention is provided with reference to the accompanying drawings and preferred embodiments.
As shown in figure 1, the utility model comprises a special pipeline body 1 for petroleum, a boronized eutectic layer 2 and a boronized layer 3. The utility model discloses it is metallurgical combination mutually between boronizing eutectic layer 2, the boronizing layer 3 and the pipeline body 1.
As shown in fig. 2, the utility model comprises a special pipeline body 1 for petroleum, a boronizing eutectic layer 2 and a boronizing layer 3. The utility model discloses it is metallurgical combination mutually between boronizing eutectic layer 2, the boronizing layer 3 and the pipeline body 1.
It is noted that a metallurgical bond is a bond formed by interdiffusion of atoms at the interface of two metals. After metallurgical bonding is formed on the interface of the composite material, the composite material has good process performance. Can be processed and formed by various cold and hot pressing, and can be welded and machined. This is not comparable to cold composites where the interface is a mechanical bond or van der waals bond.
In summary, the utility model belongs to the special pipeline of oil, concretely relates to pipeline that is equipped with boride layer and boride eutectic layer. A special petroleum pipeline with a borated layer and a borated eutectic layer comprises a pipeline body 1, a borated eutectic layer 2 and a borated layer 3. The utility model discloses boronizing eutectic layer 2 and boronizing layer 3 are metallurgical with pipeline body 1 and combine. The utility model provides a special oil pipeline with boronizing eutectic layer and boronizing layer, the boronizing layer 3 is by Fe 2 Phase B, or Fe 2 The B phase and the FeB phase are jointly formed, and the boronizing eutectic layer 2 is Fe 2 The phase B and the eutectic are jointly composed. The boride layer 3 has high hardness and excellent wear resistanceThe capability of resisting eccentric wear and fluid scouring of the pipeline is improved, and the pipeline has good corrosion resistance to acid medium corrosion (nitric acid removal). The boronized eutectic layer 2 reduces its brittleness, improves toughness, can withstand greater impact forces, and increases phase layer thickness on the basis of the characteristics of the boronized layer 3.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The wear-resistant anti-corrosion petroleum special pipeline is characterized by sequentially comprising a pipeline body, a boronized eutectic layer and a boronized layer from a pipe body to a pipe wall, wherein the pipeline body and the boronized eutectic layer are bonded in a metallurgical manner, and the boronized eutectic layer and the boronized layer are bonded in a metallurgical manner.
2. The wear resistant anti-corrosion petroleum dedicated pipe according to claim 1, wherein the thickness of the boronized eutectic layer is 20 μm to 1200 μm.
3. The wear resistant anti-corrosive petroleum specialized pipe according to claim 1, wherein the thickness of the borated layer is 20 μm to 500 μm.
4. The wear resistant anti-corrosion petroleum dedicated pipe according to claim 1, wherein the micro hardness of the boronized eutectic layer is between 500HV and 1500HV.
5. The wear resistant anti-corrosion petroleum dedicated pipe according to claim 1, wherein the micro-hardness of said borated layer is 800HV to 2200HV.
6. The wear resistant and corrosion resistant petroleum pipeline according to claim 1, wherein the petroleum pipeline comprises oil pipe, casing and oil pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122775523.1U CN218876499U (en) | 2021-11-14 | 2021-11-14 | Wear-resistant and corrosion-resistant petroleum special pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122775523.1U CN218876499U (en) | 2021-11-14 | 2021-11-14 | Wear-resistant and corrosion-resistant petroleum special pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN218876499U true CN218876499U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122775523.1U Active CN218876499U (en) | 2021-11-14 | 2021-11-14 | Wear-resistant and corrosion-resistant petroleum special pipeline |
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| Country | Link |
|---|---|
| CN (1) | CN218876499U (en) |
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2021
- 2021-11-14 CN CN202122775523.1U patent/CN218876499U/en active Active
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