CN110396694A - A kind of fixed device and method of Casing Failure sacrificial anode - Google Patents
A kind of fixed device and method of Casing Failure sacrificial anode Download PDFInfo
- Publication number
- CN110396694A CN110396694A CN201910728296.1A CN201910728296A CN110396694A CN 110396694 A CN110396694 A CN 110396694A CN 201910728296 A CN201910728296 A CN 201910728296A CN 110396694 A CN110396694 A CN 110396694A
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- China
- Prior art keywords
- sacrificial anode
- clamping device
- casing
- pressure cap
- claw
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/18—Means for supporting electrodes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The present invention provides a kind of fixed device and method of oil well casing sacrificial anode, including pressure cap, clamping device, sacrificial anode and casing, the pressure cap are connect with clamping device, and clamping device is equipped with multiple claws；The clamping device is connect with sacrificial anode, and casing is located in sacrificial anode, and is connect by claw with sacrificial anode.Clamping device is connect by bolt with sacrificial anode in the present apparatus, clamping device is tightly pressed against the claw on clamping device on sleeve outer wall, teeth and sleeve outer wall on claw inner surface generate 3 tons or so of bite force, it connect clamping device securely with casing, to realize being reliably connected for sacrificial anode and casing.
Description
Technical field
The present invention relates to casing tube anti-corrosive field used in oil field development production process, in particular to a kind of oil well casing
Sacrificial anode fixes device and method, is suitable for the outer anti-corrosion of all oil wells in oil field, produced-water reinjection casing.
Background technique
Sacrificial anode protection is the cathode protecting process applied earliest in oil field development, and the method is simple and easy, is not required to power supply, no
With personal management, neighbouring steel construction or equipment are not interfered, can make protected component by consuming a small amount of active metal material
Obtain complete cathodic protection.By more than ten years application attestation, sacrificial anode protection cathode protection technology combination coating antiseptic technology
It is one of oilfield development process middle sleeve anti-corrosion Practical economy technology.Currently, sacrificing sun is that there are one by process
Fixed surplus to carry out cooperation with casing achievees the purpose that sacrificial anode to be fixed on casing.The method is asked there are following
Topic: first is that machining allowance is reserved too small, sacrificial anode installation can be made to generate difficult；Second is that machining allowance reserve it is excessive, can because set
Pipe go into the well impact or with the extension of use time, casing inner diameter can increase because of corrosion, easily cause sacrificial anode from casing
On fall off, so that casing is lost protection.
Therefore, it is necessary to develop a kind of fixed device, it not only can guarantee that sacrificial anode installation was simple and convenient, but also can guarantee sacrifice
Anode is securely connect with casing.
Summary of the invention
In order to overcome existing oil-water well to generate in setting of casing work progress by collision shock loading caused by sacrifice
The problem of anode falls off, the present invention provide a kind of fixed device and method of Casing Failure sacrificial anode.Clamping device in the present apparatus
It is connect by bolt with sacrificial anode, clamping device makes the claw on clamping device be tightly pressed against sleeve outer wall under the action of pressure cap
On, teeth and sleeve outer wall on claw inner surface generate 3 tons or so of bite force, and it connect clamping device securely with casing, from
And realize being reliably connected for sacrificial anode and casing.
The technical solution adopted by the present invention:
A kind of fixed device of oil well casing sacrificial anode, including pressure cap, clamping device, sacrificial anode and casing, the pressure cap with
Clamping device connection, clamping device are equipped with multiple claws；The clamping device is connect with sacrificial anode, and casing is located at sacrificial anode
It is interior, and connect by claw with sacrificial anode.
Multiple claw inner surfaces are equipped with teeth.
The clamping device is equipped with 6 claws, and 6 claw inner surfaces are equipped with teeth.
The claw is taper claw.
The clamping device end face is equipped with multiple link bolt hole.
The clamping device is bolted with sacrificial anode.
The pressure cap inner surface is machined with pressure cap connection screw thread, and clamping device outer surface is machined with the claw with pressure cap cooperation
Connection screw thread, the pressure cap connection screw thread of the pressure cap and the claw connection screw thread of clamping device connect.
A kind of oil well casing sacrificial anode fixing means, specific steps are as follows: first connect pressure cap and clamping device by screw thread
It connects, then clamping device and sacrificial anode is bolted, the external screw thread connection of pressure cap internal screw thread and clamping device, as pressure cap revolves
Into clamping device, the claw contraction of clamping device is stung tightly in bushing outer surface, to realize the connection of sacrificial anode and casing.
The invention has the benefit that
(1) present apparatus realize sacrificial anode installation it is simple and convenient, and prevent from falling off from casing using middle sacrificial anode.
(2) reliability of sacrificial anode and casing be by pressure cap and clamping device by be threadedly engaged the pressing force of generation from
And teeth and sleeve outer wall on claw inner surface is made to generate bite force to determine.Bite force can realize accurate control.
(3) sacrificial anode is closely connect by clamping device with casing, realizes sacrifice and the good conduction of casing from face
Property, it ensure that the anti-corrosion effect of casing.
It is further detailed below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of clamping device of the present invention.
Fig. 2 is the structural schematic diagram of pressure cap of the present invention.
Fig. 3 is the structural schematic diagram of the fixed device installation of the present invention.
In figure, appended drawing reference are as follows: 1, link bolt hole；2, claw；3, claw connection screw thread；4, pressure cap connection screw thread；5,
Pressure cap；6, clamping device；7, bolt is connected；8, sacrificial anode；9, casing.
Specific embodiment
Embodiment 1:
In order to overcome existing oil-water well to generate in setting of casing work progress by collision shock loading caused by sacrificial anode
The problem of falling off, the present invention provide a kind of Casing Failure sacrificial anode as shown in Figs. 1-3 fixed device and method.The present apparatus
Middle clamping device is connect by bolt with sacrificial anode, and clamping device makes the claw on clamping device be tightly pressed against set under the action of pressure cap
In pipe outer wall, teeth and sleeve outer wall on claw inner surface generate 3 tons or so of bite force, connect clamping device securely with casing
It connects, to realize being reliably connected for sacrificial anode and casing.
A kind of fixed device of oil well casing sacrificial anode, including pressure cap 5, clamping device 6, sacrificial anode 8 and casing 9, it is described
Pressure cap 5 connect with clamping device 6, clamping device 6 be equipped with multiple claws 2；The clamping device 6 is connect with sacrificial anode 8, casing
9 are located in sacrificial anode 8, and are connect by claw 2 with sacrificial anode 8.
The present invention is implemented as follows:
Pressure cap 5 is connected through a screw thread with clamping device 6, and clamping device 6 is bolted with sacrificial anode 8,5 internal screw thread of pressure cap and card
The external screw thread connection of tight device 6, with 5 precession clamping device 6 of pressure cap, 2 elastic shrinkage of claw of clamping device 6 is stung tightly in 9 appearance of casing
Face, to realize being reliably connected for sacrificial anode 8 and casing 9.
Clamping device 6 is connect by bolt with sacrificial anode 8 in the present apparatus, and clamping device 6 makes clamping device under the action of pressure cap 5
Claw 2 on 6 is tightly pressed against on 9 outer wall of casing, and the teeth on 2 inner surface of claw and 9 outer wall of casing generate 3 tons or so and be engaged
Power connect clamping device 6 securely with casing 9, to realize being reliably connected for sacrificial anode 8 and casing 9.Succeed through the invention
Solve the problems, such as that sacrificial anode caused by the shock loading that oil-water well generates in setting of casing work progress by collision falls off.
Embodiment 2:
On the basis of embodiment 1, in the present embodiment, 2 inner surface of multiple claws is equipped with teeth.
Preferably, the clamping device 6 is equipped with 6 claws, 2,62 inner surfaces of claw and is equipped with teeth.
Preferably, the claw 2 is taper claw.
Preferably, 6 end face of clamping device is equipped with multiple link bolt hole 1.
Preferably, the clamping device 6 is bolted with sacrificial anode 8.
Preferably, 5 inner surface of pressure cap is machined with pressure cap connection screw thread 4, and 6 outer surface of clamping device is machined with and pressure cap
The claw connection screw thread 3 of 4 cooperations, the pressure cap connection screw thread 4 of the pressure cap 5 are connect with the claw connection screw thread 3 of clamping device 6.
Clamping device 6 is the cylinder ring that inner surface is machined with teeth, by selecting elastic material, the optional 65Mn of elastic material.
And the mode that multiple slots are cut on cylinder ring makes claw 2 have preferable elasticity, after fluting elastic (yield strength) are as follows: 850MPa.
In addition, the teeth on claw 2 generate enough hardness and strength by heat treatment, hardness after heat treatment: 45-50HRC, intensity are
980MPa;And it ensure that and generate enough bite forces with 9 outer wall of casing.
A kind of oil well casing sacrificial anode fixing means, specific steps are as follows: pressure cap 5 and clamping device 6 are passed through into screw thread first
Connection, then clamping device 6 and sacrificial anode 8 are bolted, 5 internal screw thread of pressure cap is connect with the external screw thread of clamping device 6, with
The contraction of claw 2 of 5 precession clamping device 6 of pressure cap, clamping device 6 is stung tightly in 9 outer surface of casing, to realize sacrificial anode 8 and set
The connection of pipe 9.
The installation that the present apparatus realizes sacrificial anode 8 is simple and convenient, and prevents from taking off from casing 9 using middle sacrificial anode 8
It falls.The reliability of sacrificial anode 8 and casing 9 is with clamping device 6 by pressure cap 5 by being threadedly engaged the pressing force of generation to make
Teeth and 9 outer wall of casing on 2 inner surface of claw generate bite force to determine.Bite force can realize accurate control.
The present apparatus closely connect sacrificial anode 8 with casing 9 by clamping device 6, realizes sacrificial anode 8 and casing from face
9 good electric conductivity, ensure that the anti-corrosion effect of casing.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.It is the device of detailed description in the present invention
Component and method are the prior art, will be no longer further detailed in the present invention.
Claims (8)
1. a kind of fixed device of oil well casing sacrificial anode, it is characterised in that: including pressure cap (5), clamping device (6), sacrificial anode
(8) it is connect with casing (9), the pressure cap (5) with clamping device (6), clamping device (6) is equipped with multiple claws (2)；The card
Tight device (6) is connect with sacrificial anode (8), and casing (9) is located in sacrificial anode (8), and passes through claw (2) and sacrificial anode (8)
Connection.
2. the fixed device of a kind of oil well casing sacrificial anode according to claim 1, it is characterised in that: multiple cards
Pawl (2) inner surface is equipped with teeth.
3. the fixed device of a kind of oil well casing sacrificial anode according to claim 1, it is characterised in that: the clamping device
(6) 6 claws (2) are equipped with, 6 claw (2) inner surfaces are equipped with teeth.
4. the fixed device of a kind of oil well casing sacrificial anode according to claim 1, it is characterised in that: the claw
It (2) is taper claw.
5. the fixed device of a kind of oil well casing sacrificial anode according to claim 1, it is characterised in that: the clamping device
(6) end face is equipped with multiple link bolt hole (1).
6. the fixed device of a kind of oil well casing sacrificial anode according to claim 1, it is characterised in that: the clamping device
(6) it is bolted with sacrificial anode (8).
7. the fixed device of a kind of oil well casing sacrificial anode according to claim 1, it is characterised in that: the pressure cap
(5) inner surface is machined with pressure cap connection screw thread (4), and clamping device (6) outer surface, which is machined with, connect spiral shell with the claw of pressure cap (4) cooperation
Line (3), the pressure cap connection screw thread (4) of the pressure cap (5) are connect with the claw connection screw thread (3) of clamping device (6).
8. any one oil well casing sacrificial anode fixing means described in -7 according to claim 1, it is characterised in that: specific step
Suddenly are as follows: pressure cap (5) and clamping device (6) are connected through a screw thread first, then clamping device (6) and sacrificial anode (8) are passed through into bolt
Connection, pressure cap (5) internal screw thread is connect with the external screw thread of clamping device (6), with pressure cap (5) precession clamping device (6), clamping device (6)
Claw (2) contraction sting tightly in casing (9) outer surface, to realize the connection of sacrificial anode (8) Yu casing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728296.1A CN110396694A (en) | 2019-08-08 | 2019-08-08 | A kind of fixed device and method of Casing Failure sacrificial anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728296.1A CN110396694A (en) | 2019-08-08 | 2019-08-08 | A kind of fixed device and method of Casing Failure sacrificial anode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110396694A true CN110396694A (en) | 2019-11-01 |
Family
ID=68327680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910728296.1A Pending CN110396694A (en) | 2019-08-08 | 2019-08-08 | A kind of fixed device and method of Casing Failure sacrificial anode |
Country Status (1)
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| CN (1) | CN110396694A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373450A (en) * | 2021-05-31 | 2021-09-10 | 安徽峘岳材料科技有限公司 | Anti-drop aluminum alloy sacrificial anode and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH108272A (en) * | 1996-06-21 | 1998-01-13 | Esuteimu:Kk | Mounting device of sacrificial anode member |
| JPH11323581A (en) * | 1998-05-13 | 1999-11-26 | Kitz Corp | Sacrificial anode mounting device |
| CN203373425U (en) * | 2013-07-29 | 2014-01-01 | 陕西延长石油(集团)有限责任公司研究院 | Corrosion prevention device for connecting oil well casing and sacrificial anode through snap springs |
| CN203999827U (en) * | 2014-05-30 | 2014-12-10 | 西安金立石油科技有限公司 | A kind of oil and water well down-hole casing rot-resistant anode construction |
| CN209260210U (en) * | 2018-12-06 | 2019-08-16 | 西安普林电气科技有限公司 | A kind of protection oil well casing sacrificial anode device |
-
2019
- 2019-08-08 CN CN201910728296.1A patent/CN110396694A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH108272A (en) * | 1996-06-21 | 1998-01-13 | Esuteimu:Kk | Mounting device of sacrificial anode member |
| JPH11323581A (en) * | 1998-05-13 | 1999-11-26 | Kitz Corp | Sacrificial anode mounting device |
| CN203373425U (en) * | 2013-07-29 | 2014-01-01 | 陕西延长石油(集团)有限责任公司研究院 | Corrosion prevention device for connecting oil well casing and sacrificial anode through snap springs |
| CN203999827U (en) * | 2014-05-30 | 2014-12-10 | 西安金立石油科技有限公司 | A kind of oil and water well down-hole casing rot-resistant anode construction |
| CN209260210U (en) * | 2018-12-06 | 2019-08-16 | 西安普林电气科技有限公司 | A kind of protection oil well casing sacrificial anode device |
Non-Patent Citations (1)
| Title |
|---|
| 北京航空学院: "《金属工艺学》", 30 June 1984, 国防工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373450A (en) * | 2021-05-31 | 2021-09-10 | 安徽峘岳材料科技有限公司 | Anti-drop aluminum alloy sacrificial anode and preparation method thereof |
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Application publication date: 20191101 |
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