CN201010693Y - Oil well anti-corrosion device - Google Patents
Oil well anti-corrosion device Download PDFInfo
- Publication number
- CN201010693Y CN201010693Y CNU2006201479832U CN200620147983U CN201010693Y CN 201010693 Y CN201010693 Y CN 201010693Y CN U2006201479832 U CNU2006201479832 U CN U2006201479832U CN 200620147983 U CN200620147983 U CN 200620147983U CN 201010693 Y CN201010693 Y CN 201010693Y
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- CN
- China
- Prior art keywords
- string
- casing
- corrosion
- oil well
- sucker rod
- 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 - Fee Related
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- Prevention Of Electric Corrosion (AREA)
Abstract
An oil well anti-corrosion device comprises a DC power supply (1), an auxiliary anode (2), a rod string (3), an oil string (4), and a casing string (5). The utility model is characterized in that: the anode of the DC power supply (1) is connected with the auxiliary anode (2); the cathode of the DC power supply (1) is connected with the rod string (3), the oil string (4) and the casing string (5). The device could slow down the corrosion of stratum water on the rod string (3), the oil string (4) and the casing string (5).
Description
Affiliated technical field
The utility model relates to a kind of oil well corrosion-resisting device on the oilfield, uses this device can slow down the corrosion of local water to sucker rod string [3], tubing string [4] and string of casing [5].
Background technology:
At present, do not establish the additional power source corrosion-resisting device on oil well, its major defect is: the sucker rod string of oil well, tubing string and string of casing are subjected to the heavy corrosion of local water often.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of oil well corrosion-resisting device, uses this device can slow down the corrosion of local water to sucker rod string [3], tubing string [4] and string of casing [5].
The technical scheme that its technical problem that solves the utility model adopts is: the oil well corrosion-resisting device is to be made of direct supply [1], supplementary anode [2], sucker rod string [3], tubing string [4], string of casing [5], it is characterized in that: the positive pole of direct supply [1] is connected with supplementary anode [2], and the negative pole of direct supply [1] is connected with sucker rod string [3], tubing string [4] and string of casing [5] respectively.After the energising; a large amount of electronics are forced to flow to protected sucker rod string [3], tubing string [4] and string of casing [5]; the accumulation that makes sucker rod string [3], tubing string [4] and string of casing [5] surface produce negative charge (electronics); as long as add enough strong voltage; metallic corrosion and the galvanic current that produces just can not be transferred, thereby can slow down the corrosion of local water to sucker rod string [3], tubing string [4] and string of casing [5].The voltage and current of direct supply [1] all can be regulated, its effect is according to the corrosion situation of local water to oil well pipe, and the degree of depth of tubing string, in time electric current and voltage are adjusted to suitable numerical value, thereby neither waste electric energy, can slow down the corrosion of local water again sucker rod string, tubing string and string of casing.
The beneficial effects of the utility model: by seven test in places, the utility model compared with prior art uses this device can slow down the corrosion of local water to sucker rod string, tubing string and string of casing.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further:
Accompanying drawing is the cross-sectional view of a kind of structure embodiment of oil well corrosion-resisting device.
1. direct supplys, 2. supplementary anodes, 3. sucker rod strings, 4. tubing strings, 5. string of casing, 6. four-way junction of casing among the figure
Embodiment
In the accompanying drawings, the oil well corrosion-resisting device is made of direct supply [1], supplementary anode [2], sucker rod string [3], tubing string [4], string of casing [5], it is characterized in that: the positive pole of direct supply [1] is connected with supplementary anode [2], and the negative pole of direct supply [1] is connected with sucker rod string [3], tubing string [4], string of casing [5] respectively.After the energising; a large amount of electronics are forced to flow to protected sucker rod string [3], tubing string [4] and string of casing [5]; the accumulation that makes sucker rod string [3], tubing string [4] and string of casing [5] surface produce negative charge (electronics); as long as add enough strong voltage; metallic corrosion and the galvanic current that produces just can not be transferred, thereby can slow down the corrosion of local water to sucker rod string [3], tubing string [4] and string of casing [5].The voltage and current of direct supply [1] all can be regulated, its effect is according to the corrosion situation of local water to oil well pipe, and the degree of depth of tubing string, in time electric current and voltage are adjusted to suitable numerical value, thereby neither waste electric energy, can slow down the corrosion of local water again sucker rod string, tubing string and string of casing.
Claims (2)
1. oil well corrosion-resisting device, it is made of direct supply [1], supplementary anode [2], sucker rod string [3], tubing string [4], string of casing [5], it is characterized in that: the positive pole of direct supply [1] is connected with supplementary anode [2], and the negative pole of direct supply [1] is connected with sucker rod string [3], tubing string [4], string of casing [5] respectively.
2. oil well corrosion-resisting device according to claim 1 is characterized in that: the voltage and current of direct supply [1] all can be regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201479832U CN201010693Y (en) | 2006-11-04 | 2006-11-04 | Oil well anti-corrosion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201479832U CN201010693Y (en) | 2006-11-04 | 2006-11-04 | Oil well anti-corrosion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201010693Y true CN201010693Y (en) | 2008-01-23 |
Family
ID=39045637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201479832U Expired - Fee Related CN201010693Y (en) | 2006-11-04 | 2006-11-04 | Oil well anti-corrosion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201010693Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313721A (en) * | 2017-05-04 | 2017-11-03 | 中石油煤层气有限责任公司 | Pumpingh well impressed current method anti-corrosive apparatus |
| CN112695329A (en) * | 2020-11-12 | 2021-04-23 | 中国石油天然气股份有限公司 | Long-acting anode internal corrosion prevention device under oil well pump and corrosion prevention method thereof |
-
2006
- 2006-11-04 CN CNU2006201479832U patent/CN201010693Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313721A (en) * | 2017-05-04 | 2017-11-03 | 中石油煤层气有限责任公司 | Pumpingh well impressed current method anti-corrosive apparatus |
| CN107313721B (en) * | 2017-05-04 | 2024-02-20 | 中石油煤层气有限责任公司 | External current method anticorrosion device for pumping well |
| CN112695329A (en) * | 2020-11-12 | 2021-04-23 | 中国石油天然气股份有限公司 | Long-acting anode internal corrosion prevention device under oil well pump and corrosion prevention method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |