CN213450274U - Composite casing structure capable of preventing casing mechanical damage and corrosion failure - Google Patents
Composite casing structure capable of preventing casing mechanical damage and corrosion failure Download PDFInfo
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- CN213450274U CN213450274U CN202022470279.3U CN202022470279U CN213450274U CN 213450274 U CN213450274 U CN 213450274U CN 202022470279 U CN202022470279 U CN 202022470279U CN 213450274 U CN213450274 U CN 213450274U
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Abstract
The utility model relates to a composite casing structure capable of preventing casing mechanical damage and corrosion failure, which relates to the field of composite casings, in particular to a composite casing structure capable of preventing casing mechanical damage and corrosion failure, comprising a metal casing, wherein the outer wall of the metal casing is sleeved with a wear-resistant anticorrosive layer; the wear-resistant anticorrosive layer comprises a wear-resistant anticorrosive body which is wear-resistant and resistant to corrosion of a bottom layer fluid medium and an anode material embedded in the wear-resistant anticorrosive body; the anode material is embedded on one surface of the wear-resistant and corrosion-resistant body facing the metal sleeve, and is a zinc alloy anode material; the wear-resistant and corrosion-resistant body is made of rubber and/or plastic. The utility model discloses simple structure can guarantee sleeve pipe safety, extension sleeve pipe service life under the condition that need not adopt extra antiseptic measure to oil gas well life has been ensured.
Description
Technical Field
The utility model relates to a composite bushing field, concretely relates to can prevent composite bushing structure of sleeve pipe mechanical damage and corrosion failure.
Background
Casing damage is common in the development of oil and gas fields at home and abroad. Casing damage is caused by a number of causes, with mechanical damage during casing run-in and corrosion during service of the casing being the most common causes. The mechanical damage of the casing is caused by the inevitable collision and friction between the outer wall of the casing and the formation rock when the casing is put into the well. The outer wall of the casing is possibly contacted with formation fluid due to the influence of the well cementation quality in the service process of the casing, and the corrosion can be avoided. The damage and failure of the casing often mean that the well is repaired in a production stop mode, the economic loss is huge, the normal operation of the production of the oil-gas field is seriously influenced, and the oil-gas well is even scrapped seriously. Economic and effective prevention technology is always sought at home and abroad.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a can effectively prevent the sleeve pipe and go into the mechanical damage that collision, friction caused of well in-process, completely cut off stratum liquid simultaneously and slowed down the corruption, finally reach prevention sleeve pipe mechanical damage and slow down the composite sleeve pipe structure of a preventable sleeve pipe mechanical damage and corrosion failure who corrodes the purpose.
The utility model relates to a composite casing structure capable of preventing casing mechanical damage and corrosion failure, which comprises a metal casing, wherein the outer wall of the metal casing is sleeved with a wear-resistant anticorrosive layer;
the wear-resistant anticorrosive layer comprises a wear-resistant anticorrosive body which is wear-resistant and resistant to corrosion of a bottom layer fluid medium and an anode material embedded in the wear-resistant anticorrosive body;
the anode material is embedded on one surface of the wear-resistant and corrosion-resistant body facing the metal sleeve, and is a zinc alloy anode material;
the wear-resistant and corrosion-resistant body is made of rubber and/or plastic.
Preferably, the anode material is embedded on the wear-resistant and corrosion-resistant body in a strip shape.
Preferably, the anode material is ring-shaped, and the central axis of the ring in which the anode material is arranged is on the same line with the central axis of the metal sleeve.
Preferably, the anode material is uniformly distributed on one surface of the wear-resistant and corrosion-resistant body facing the metal sleeve in a granular manner.
The utility model discloses simple structure can guarantee sleeve pipe safety, extension sleeve pipe service life under the condition that need not adopt extra antiseptic measure to oil gas well life has been ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural view of a wear-resistant anticorrosive layer according to an embodiment.
Fig. 3 is a structural view of another embodiment of wear resistance and corrosion resistance.
Reference numerals: 1-metal sleeve, 2-wear-resistant anticorrosive layer and 3-anode material.
Detailed Description
The utility model relates to a composite casing structure capable of preventing casing mechanical damage and corrosion failure, which comprises a metal casing 1, wherein the outer wall of the metal casing is sleeved with a wear-resistant anticorrosive layer 2;
the wear-resistant anticorrosive layer 2 comprises a wear-resistant anticorrosive body resistant to wear and corrosion of a bottom layer fluid medium and an anode material 3 embedded in the wear-resistant anticorrosive body;
the anode material 3 is embedded on one surface of the wear-resistant and corrosion-resistant body facing the metal sleeve 1, and the anode material 3 is a zinc alloy anode material 3;
the wear-resistant and corrosion-resistant body is made of rubber and/or plastic.
The anode material 3 is embedded on the wear-resistant anticorrosion body in a strip shape.
The anode material 3 is ring-shaped, and the central axis of the ring where the anode material 3 is located is on the same line with the central axis of the metal sleeve.
The anode materials 3 are uniformly distributed on one surface of the wear-resistant and corrosion-resistant body facing the metal sleeve 1 in a granular manner.
The first embodiment is as follows:
the metal casing 1 is a J55 steel-grade casing which is commonly used in oil fields and meets the API 5CT standard, the outer diameter of the casing is 139.7mm, a layer of wear-resistant rubber with the thickness of 8mm is compounded on the outer wall of the casing, and strip-shaped zinc alloy anodes with the diameter of 2mm are embedded on the inner wall of the rubber layer.
The utility model discloses for the J55 steel grade sleeve pipe of API 5CT standard in the past, can effectively reduce mechanical damage entering the well in-process, the in-process of being on active service is anticorrosive effectual, and the sleeve pipe outer wall does not need any maintenance and maintenance antiseptic measure, can improve sleeve pipe life by a wide margin, and then reduces the emergence of casing damage well.
Example two:
the metal casing 1 is an N80 steel-grade casing which is commonly used in oil fields and meets the API 5CT standard, the outer diameter of the metal casing is 244.5mm, a layer of wear-resistant composite plastic with the thickness of 10mm is compounded on the outer wall of the metal casing, and a granular zinc alloy anode with the diameter of 3mm is embedded on the inner wall of the composite plastic.
The utility model discloses simple structure can guarantee sleeve pipe safety, extension sleeve pipe service life under the condition that need not adopt extra antiseptic measure to oil gas well life has been ensured.
Claims (4)
1. A composite casing structure capable of preventing casing mechanical damage and corrosion failure comprises a metal casing (1), and is characterized in that a wear-resistant anticorrosive layer (2) is sleeved on the outer wall of the metal casing;
the wear-resistant anticorrosive layer (2) comprises a wear-resistant anticorrosive body resistant to wear and corrosion of a bottom layer fluid medium and an anode material (3) embedded in the wear-resistant anticorrosive body;
the anode material (3) is embedded on one surface of the wear-resistant and corrosion-resistant body facing the metal sleeve (1), and the anode material (3) is a zinc alloy anode material (3);
the wear-resistant and corrosion-resistant body is made of rubber and/or plastic.
2. The composite casing structure capable of preventing mechanical damage and corrosion failure of the casing according to claim 1, wherein the anode material (3) is embedded on the wear-resistant and corrosion-resistant body in a strip shape.
3. The composite casing structure capable of preventing mechanical damage and corrosion failure of the casing according to claim 2, wherein the anode material (3) is ring-shaped, and the central axis of the ring where the anode material (3) is located is on the same line with the central axis of the metal casing.
4. The composite casing structure capable of preventing the mechanical damage and corrosion failure of the casing according to claim 1, wherein the anode material (3) is uniformly distributed in a granular shape on one surface of the wear-resistant and corrosion-resistant body facing the metal casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470279.3U CN213450274U (en) | 2020-10-30 | 2020-10-30 | Composite casing structure capable of preventing casing mechanical damage and corrosion failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470279.3U CN213450274U (en) | 2020-10-30 | 2020-10-30 | Composite casing structure capable of preventing casing mechanical damage and corrosion failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213450274U true CN213450274U (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022470279.3U Active CN213450274U (en) | 2020-10-30 | 2020-10-30 | Composite casing structure capable of preventing casing mechanical damage and corrosion failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213450274U (en) |
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2020
- 2020-10-30 CN CN202022470279.3U patent/CN213450274U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Yongqiang Inventor after: Wang Dandan Inventor after: Chi Jiu Rong Inventor after: Dong Chenxi Inventor after: Lv Shuo Inventor after: Yang Zhigang Inventor after: Yang Tianqi Inventor after: Si Xiaoming Inventor after: Turbulent River Inventor after: Nanbeibei Inventor after: Fang Xiaojun Inventor after: Wang Ke Inventor before: Zhang Yongqiang Inventor before: Wang Dandan Inventor before: Chi Jiu Rong Inventor before: Dong Chenxi Inventor before: Lv Shuo Inventor before: Yang Zhigang Inventor before: Yang Tianlin Inventor before: Si Xiaoming Inventor before: Turbulent River Inventor before: Nanbeibei Inventor before: Fang Xiaojun Inventor before: Wang Ke |
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| CB03 | Change of inventor or designer information |