CN208203156U - Anticorrosive centralizer - Google Patents
Anticorrosive centralizer Download PDFInfo
- Publication number
- CN208203156U CN208203156U CN201721636928.4U CN201721636928U CN208203156U CN 208203156 U CN208203156 U CN 208203156U CN 201721636928 U CN201721636928 U CN 201721636928U CN 208203156 U CN208203156 U CN 208203156U
- Authority
- CN
- China
- Prior art keywords
- anode
- rod
- corrosion
- centralizer
- supporting positive
- 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.)
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Links
- 238000005260 corrosion Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 239000010405 anode material Substances 0.000 claims abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 239000004677 Nylon Substances 0.000 claims abstract description 6
- 229920002302 Nylon 6,6 Polymers 0.000 claims abstract description 6
- 229920001778 nylon Polymers 0.000 claims abstract description 6
- 239000012779 reinforcing material Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 239000012744 reinforcing agent Substances 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000006056 electrooxidation reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model provides an anti-corrosion centralizer, which comprises a coupling, a rod body, two centralizing sleeves and an anode, wherein the rod body is provided with the two centralizing sleeves; one end of the rod body is provided with a coupling. The anode material of the anode is ternary aluminum alloy, and the anode is wrapped by a nickel-based wear-resistant alloy outer sleeve with holes; the anode is cylindrical. The straightening sleeve is of a spiral tooth structure, and reinforcing materials nylon 66 and nylon 1010 containing 30-35% of glass fiber reinforcing agents are selected as materials. The utility model discloses carry out the preferred to centralizer material to at first install the positive pole additional on righting the pole, make the utility model discloses not only have good abrasionproof effect, more have anticorrosive effect, effectively protected the sucker rod post.
Description
Technical field
The utility model relates to a kind of anti-corrosion centralizers, install anode anti-corrosion additional on centralizer, belong to oil pumping in oil fields bar and help
Positive device technical field of anticorrosion.
Background technique
With CO2The displacement of reservoir oil improves the gradually expansion of technology large-scale application on oil field of recovery ratio, CO2As a kind of corruption
Gas is lost, in the production of current oil field, the Anticorrosion of rod string be can not be ignored.
Contain a large amount of CO in oil well produced liquid2,When sucker rod surface fine cracks occurs because of fatigue, Produced Liquid is full of
In in crackle, electrochemical corrosion is formed, in the case where becoming friendship stress, crackle, which constantly expands, to be split, and crackle forward position is protected always to fresh gold
Category contacts with surrounding liquid and constantly corrodes, and causes the fracture of sucker rod.
The general sucker rod service life is short, and after the body of rod is corroded at the severe position of certain corrosion, entire sucker rod is just
It cannot reuse, such waste of resource.But change entire rod string into mechanical performance satisfactory anti-corrosion material, certainly
A series of problems, such as will appear high cost, it can be considered to install certain anti-corrosive apparatus additional in place to reach same
Effect.
Utility model content
In order to overcome the problems, such as it is existing anti-corrosion and abrasionproof, the utility model cannot provide a kind of anti-corrosion centralizer well,
The utility model makes centralizer not only have the effect of righting anti-abrasion, while having protection by installing anode additional on centralizer
The effect of rod string corrosion-resistant.
The technical solution adopted in the utility model are as follows:
A kind of anti-corrosion centralizer, including box cupling, the body of rod, supporting positive cover and anode, there are two rightings for setting on the body of rod
It covers, is provided with anode between two supporting positive covers, two supporting positive covers and anode are socketed on the body of rod；Body of rod one end is equipped with box cupling.
The anode material of the anode selects ternary aluminum alloy, and anode is risen with nickel-base antiwear alloy outer sheath covers with holes
Come；Anode is cylindrical.
The supporting positive cover selects spiral toothing, and material selection contains the reinforcing material of 30% ~ 35% Glass Fiber Reinforcement
Nylon66 fiber, nylon 1010.
The size of the anode are as follows: anode internal diameter is consistent with external diameter of rod body, and anode outer diameter is less than the outer diameter of supporting positive cover, anode
Length 500mm.
The body of rod uses 35CrMo.
The box cupling uses nickel-base antiwear alloy material.
The utility model has the following beneficial effects:
The utility model carries out preferably centralizer material, and installs anode additional on righting rod first, makes the utility model
Not only there is good abrasionproof effect, have more anti-corrosion effect, effective protection rod string.It is provided by the utility model this
Anti-corrosion centralizer is installed at the sucker rod corrosion serious position of eccentric wear, and the anode and sucker rod for being easier to betatopic in this way form one
Unified electric conductor, in underground electrochemical corrosion environment, it will lose first electronics and be consumed, to protect sucker rod
Column reaches corrosion-resistant purpose.
It is further detailed below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is supporting positive cover (Type B) structural schematic diagram.
In figure, appended drawing reference are as follows: 1, box cupling；2, the body of rod；3, supporting positive cover；4, anode.
Specific embodiment
Embodiment 1:
In order to overcome the problems, such as it is existing cannot anti-corrosion and abrasionproof, the utility model provide one kind as shown in Figure 1 well
Anti-corrosion centralizer, the utility model make centralizer not only have the effect of righting anti-abrasion, together by installing anode additional on centralizer
When have protection the effect of rod string corrosion-resistant.
A kind of anti-corrosion centralizer, including box cupling 1, the body of rod 2, supporting positive cover 3 and anode 4, on the body of rod 2 there are two settings
Supporting positive cover 3 is provided with anode 4 between two supporting positive covers 3, and two supporting positive covers 3 and anode 4 are socketed on the body of rod 2；The body of rod 2 one
End is equipped with box cupling 1.
Anti-corrosion centralizer provided by the utility model is mainly made of box cupling 1, the body of rod 2 and supporting positive cover 3, anode 4.It is processing
When, it is ensured that the body of rod 2 passes completely through anode 4 and two supporting positive covers 3.Under the box cupling 1 of body of rod upper end is used to be connected with sucker rod
Enter in well and uses.
The utility model makes centralizer not only have the effect of righting anti-abrasion, simultaneously by installing anode 4 additional on centralizer
With protection rod string corrosion-resistant effect.
The utility model installs anode 4 additional on the body of rod 2 of centralizer, and this anti-corrosion centralizer is installed at sucker rod corruption
The serious position of eccentric wear is lost, the anode and sucker rod for being easier to betatopic in this way form a unified electric conductor, in underground electrification
It learns in corrosive environment, it will lose first electronics and be consumed, to protect rod string, reach corrosion-resistant purpose.
Embodiment 2:
On the basis of based on the above embodiment, in the present embodiment, the anode material of the anode 4 selects ternary aluminum alloy,
Anode 4 is got up with nickel-base antiwear alloy outer sheath covers with holes；Anode 4 is cylindrical.
The size of the anode 4 are as follows: 4 internal diameter of anode is consistent with 2 outer diameter of the body of rod, and 4 outer diameter of anode is less than the outer of supporting positive cover 3
Diameter, 4 length 500mm of anode.
The anode material of the utility model Anodic 4 selects ternary aluminum alloy, and anode 4 is with outside nickel-base antiwear alloy with holes
Set wraps up, and while to prevent the abrasion of anode 4 from leading to unnecessary waste, 4 internal diameter of anode is consistent with 2 outer diameter of the body of rod, anode 4
Outer diameter is less than the outer diameter of supporting positive cover 3, guarantees contact of the anode material with well liquid, achievees the effect that abrasion resistant corrosion resistant.
Sacrificial anode conservation of nature range is that 50m can be according to need there is no need to continuously install on every sucker rod
It wants, seriously locates in corrosion eccentric wear, once mounting connects 5 ~ 8 sections.
There is following functional relation between the service life of anode 4 and the dosage of anode material: service life=quality/(consumption
Rate × operating current), the consumption rate of Anodic is 3.65kg/ (A ﹒ a).
The supporting positive cover 3 selects spiral toothing, and material selection contains the reinforcing material of 30% ~ 35% Glass Fiber Reinforcement
Nylon66 fiber, nylon 1010.
The body of rod 2 uses 35CrMo.
The box cupling 1 uses nickel-base antiwear alloy material.
Anti-corrosion centralizer provided by the utility model is mainly made of box cupling 1, the body of rod 2 and supporting positive cover 3, anode 4.It is processing
When, it is ensured that the body of rod 2 passes completely through anode 4 and two supporting positive covers 3.Under the box cupling 1 of 2 upper end of the body of rod is used to be connected with sucker rod
Enter in well and uses.
It installs cylinder-shaped ternary aluminum alloy anode 4 additional on the body of rod 2 of centralizer, and this anti-corrosion centralizer is installed at pumping
Beam hanger corrodes the serious position of eccentric wear, and the anode and sucker rod for being easier to betatopic in this way form a unified electric conductor, in well
In lower electrochemical corrosion environment, it will lose first electronics and be consumed, to protect rod string, reach corrosion-resistant purpose.
The centralizer body of rod 2 uses 35CrMo, and the manufacture that material should meet SY/T 5832-2002 requires the regulation to material.
In the utility model, centralizer box cupling 1 equally uses nickel-base antiwear alloy material, this material not only wear-resisting property
By force, also there is good anti-oxidant, anticorrosion (there is chromium in the inside) performance.
As shown in Fig. 2, supporting positive cover 3 selects spiral toothing (Type B), material selection contains 30% ~ 35% Glass Fiber Reinforcement
Reinforcing material nylon66 fiber, nylon 1010, design parameter is detailed in standard SY/T 5832-2002.Such design maximum plays
The corrosion and wear performance of centralizer.
Exemplified as above is only to the utility model for example, not constituting to the protection scope of the utility model
Limitation, it is all to be belonged within the protection scope of the utility model with the same or similar design of the utility model.This is practical new
Unspecified device and structure are the prior art in type, will no longer be illustrated one by one in the utility model.
Claims (6)
1. a kind of anti-corrosion centralizer, it is characterised in that: described including box cupling (1), the body of rod (2), supporting positive cover (3) and anode (4)
On the body of rod (2) there are two settings supporting positive cover (3), it is provided with anode (4) between two supporting positive covers (3), two supporting positive covers (3) and sun
Pole (4) is socketed on the body of rod (2)；The body of rod (2) one end is equipped with box cupling (1).
2. a kind of anti-corrosion centralizer according to claim 1, it is characterised in that: the anode material of the anode (4) is selected
Ternary aluminum alloy, anode (4) are got up with nickel-base antiwear alloy outer sheath covers with holes；Anode (4) is cylindrical.
3. a kind of anti-corrosion centralizer according to claim 1, it is characterised in that: the supporting positive cover (3) selects helical tooth
Structure, supporting positive cover (3) use reinforcing material nylon66 fiber or nylon 1010, in reinforcing material nylon66 fiber or nylon 1010 containing 30% ~
35% Glass Fiber Reinforcement.
4. a kind of anti-corrosion centralizer according to claim 1, it is characterised in that: the size of the anode (4) are as follows: anode
(4) internal diameter is consistent with the body of rod (2) outer diameter, and anode (4) outer diameter is less than the outer diameter of supporting positive cover (3), anode (4) length 500mm.
5. a kind of anti-corrosion centralizer according to claim 1, it is characterised in that: the body of rod (2) uses 35CrMo.
6. a kind of anti-corrosion centralizer according to claim 1, it is characterised in that: the box cupling (1) is closed using nickel-base antiwear
Golden material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721636928.4U CN208203156U (en) | 2017-11-30 | 2017-11-30 | Anticorrosive centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721636928.4U CN208203156U (en) | 2017-11-30 | 2017-11-30 | Anticorrosive centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208203156U true CN208203156U (en) | 2018-12-07 |
Family
ID=64490456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721636928.4U Active CN208203156U (en) | 2017-11-30 | 2017-11-30 | Anticorrosive centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208203156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778281A (en) * | 2019-12-02 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Elastic skeleton centralizer for corrosion prevention of outer wall of casing pipe and processing and using method thereof |
| CN115126423A (en) * | 2022-07-29 | 2022-09-30 | 大庆市龙兴石油机械有限公司 | Three-section direct injection type rotatable centralizer |
-
2017
- 2017-11-30 CN CN201721636928.4U patent/CN208203156U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778281A (en) * | 2019-12-02 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Elastic skeleton centralizer for corrosion prevention of outer wall of casing pipe and processing and using method thereof |
| CN115126423A (en) * | 2022-07-29 | 2022-09-30 | 大庆市龙兴石油机械有限公司 | Three-section direct injection type rotatable centralizer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |