CN208617985U - A kind of oil tube cathode protector - Google Patents
A kind of oil tube cathode protector Download PDFInfo
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- CN208617985U CN208617985U CN201821353516.4U CN201821353516U CN208617985U CN 208617985 U CN208617985 U CN 208617985U CN 201821353516 U CN201821353516 U CN 201821353516U CN 208617985 U CN208617985 U CN 208617985U
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- tube
- active metal
- metal alloy
- alloy layer
- oil
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Abstract
The utility model discloses a kind of oil tube cathode protectors; it is installed in production tube; interior active metal alloy layer, outer active metal alloy layer including production tube central tube medial and lateral are arranged in; there is internal lining pipe on the inside of interior active metal alloy layer; outer active metal alloy layer is equipped with outer protection tube; the both ends of the utility model are equipped with top connection, lower contact for connecting with production tube, and central tube and top connection, lower contact junction are equipped with sealing ring.By utilizing electrochemical anti-corrosive in the utility model; extend oil-water well production tube service life; inside and outside active metal alloy layer can come into full contact in underground with stratum electrolyte solution; it is respectively formed inside and outside two macroscopical batteries; it is respectively formed positive and negative anodes structure with the inside and outside wall of production tube central tube, forms an oil tube cathode protector.
Description
Technical field
The utility model relates to a kind of grease downhole anti-corrosion devices, and in particular to a kind of oil tube cathode protector.
Background technique
Traditional oil tube cathode protector is outer wall one layer of active metal alloy of plating in production tube pipe nipple, activity gold
Belong to alloy-layer to be in contact in underground with the stratum electrolyte solution of oil jacket annulus, production oil is prevented using the method for sacrificial anode
The corrosion of pipe, but since reactive metal layer is in oil-pipe external wall, cause the technology that production tube outer wall can only be protected from corrosion, but
It not can guarantee the anti-corrosion of production tube inner wall, and the anti-corrosion of tube inner wall is usually by cathode protector of sucker rod (principle and oil pipe
Cathodic protector is identical) it completes, so the production tube that guarantee oil-water well from corrosion, needs in oil-water well at present
Enter traditional oil tube cathode protector and cathode protector of sucker rod, production cost is higher, and cathode protector of sucker rod outer diameter compared with
Greatly, the sport mill resistance for increasing sucker rod, increases the power consumption of pumping unit.
Utility model content
The purpose of this utility model is to provide one kind can reach simultaneously in oil-water well oil pipe with the anti-corrosion function outside oil pipe
The oil tube cathode protector of energy.
The technical solution of the utility model is: a kind of oil tube cathode protector is installed in production tube, including above connects
Head, lower contact, the intermediate module being set between lower contact, intermediate module include the internal lining pipe set gradually from inside to outside,
Interior active metal alloy layer, central tube, outer active metal alloy layer, outer protection tube, central tube are set with top connection, lower contact junction
There is sealing ring.
Further technical solution, internal lining pipe and outer protection tube are screen construction with holes.
Further technical solution, top connection, lower contact material be N80 steel, the material of internal lining pipe and outer protection tube is
The steel of N80, the material of central tube are the steel of P110, and active metal alloy layer material is sodium magnesium-zinc alloy.
The utility model has the beneficial effects that
1, the utility model is intended to extend oil-water well production tube service life using electrochemical anti-corrosive；The utility model
The new oil tube cathode protector provided, can accomplish that oil-pipe external wall anti-corrosion can also accomplish inner wall anti-corrosive, to save sucker rod
Cathodic protector saves production cost.
2, the utility model plates one layer of active metal alloy by the inside and outside wall in production tube pipe nipple central tube, and
External application internal lining pipe and outer protection tube protect in alloy-layer, while internal lining pipe and outer protection tube are made into screen construction with holes, protect
Card active metal alloy layer can come into full contact in underground with stratum electrolyte solution.In this way, inside and outside active metal alloy layer difference
Inside and outside two macroscopical batteries are formed, are respectively formed positive and negative anodes structure with the inside and outside wall of production tube, to be risen using electrochemical anti-corrosive
To guarantee production tube inside and outside wall from the effect of corrosion.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model,
Wherein, 1, top connection, 2, lower contact, 3, central tube, 4, interior active metal alloy layer, 5, outer active metal alloy
Layer, 6, internal lining pipe, 7, outer protection tube, 8, sealing ring.
Specific embodiment
Below by non-limiting embodiment, the utility model is further described, understands the utility model.
The utility model be a kind of oil tube cathode protector, be installed in production tube, including top connection 1, lower contact 2,
The intermediate module being set between top connection 1, lower contact 2, intermediate module includes the internal lining pipe 6 set gradually from inside to outside, interior
Active metal alloy layer 4, central tube 3, outer active metal alloy layer 5, outer protection tube 7, central tube 3 and top connection 1, lower contact 2 connect
It meets place and is equipped with sealing ring 8, internal lining pipe 6 and outer protection tube 7 are screen construction with holes.
Wherein, top connection 1, lower contact 2 material be N80 steel, button-type be 2 7/8 " TBG button, mainly play linkage function,
For the utility model and the common production tube in oil field to be connected directly.
The material of internal lining pipe 6 and outer protection tube 7 is the steel of N80, and the material of central tube 3 is the steel of P110, interior activity gold
Belong to alloy-layer 4, the material of outer active metal alloy layer 5 is sodium magnesium-zinc alloy.
The utility model is by plating one layer of active metal alloy in the inside and outside wall in production tube central tube 3, in underground,
Since internal lining pipe 6 and outer protection tube 7 are screen construction with holes, guarantee adjacent inside and outside active metal alloy layer in underground energy
It is come into full contact with stratum electrolyte solution.In this way, inside and outside active metal alloy layer is respectively formed inside and outside two macroscopical batteries, with
The inside and outside wall of production tube central tube 3 is respectively formed positive and negative anodes structure, and active metal alloy layer is the anode of battery, and production tube
Central tube 3 then become cathode, from anode bodies by electrolyte to production tube provide a cathode current, sacrificial anode material
Material constantly consumes, and the time limit of oil tube cathode protector consumption just becomes the extended time limit of tubing life.To utilize electrochemistry
Anti-corrosion plays the role of guaranteeing the inside and outside wall of production tube from corrosion.
Inside and outside active metal alloy layer has then each served as the antisepsis inside and out oil pipe, when inside and outside activity gold
After category alloy is slowly corroded, central tube 3, which remains unchanged, keeps the function of leakproofness, prevents the inside and outside connection of oil pipe.6 internal diameter of internal lining pipe with
Production tube internal diameter is identical, when in use, is connected by upper lower contact with production tube, tightens screw thread, completes installation, often
100m production tube installs one, and with production tube together G.I.H, to play the role of underground anti-corrosion.
In conclusion the technical thought of this utility model is to develop new oil tube cathode protector, it can accomplish oil pipe
Outer wall anti-corrosion can also accomplish inner wall anti-corrosive, to save cathode protector of sucker rod, save production cost.
Claims (3)
1. a kind of oil tube cathode protector, is installed in production tube, which is characterized in that including top connection, lower contact, be set to
Intermediate module between upper lower contact, intermediate module include the internal lining pipe set gradually from inside to outside, interior active metal alloy layer,
Central tube, outer active metal alloy layer, outer protection tube, central tube and top connection, lower contact junction are equipped with sealing ring.
2. a kind of oil tube cathode protector according to claim 1, which is characterized in that the internal lining pipe is band with outer protection tube
The screen construction in hole.
3. a kind of oil tube cathode protector according to claim 1, which is characterized in that top connection, lower contact material be
The material of N80 steel, internal lining pipe and outer protection tube is the steel of N80, and the material of central tube is the steel of P110, and interior active metal closes
Layer gold, outer active metal alloy layer material are sodium magnesium-zinc alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821353516.4U CN208617985U (en) | 2018-08-22 | 2018-08-22 | A kind of oil tube cathode protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821353516.4U CN208617985U (en) | 2018-08-22 | 2018-08-22 | A kind of oil tube cathode protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208617985U true CN208617985U (en) | 2019-03-19 |
Family
ID=65716835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821353516.4U Active CN208617985U (en) | 2018-08-22 | 2018-08-22 | A kind of oil tube cathode protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208617985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707910A (en) * | 2018-08-22 | 2018-10-26 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of oil tube cathode protector |
-
2018
- 2018-08-22 CN CN201821353516.4U patent/CN208617985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707910A (en) * | 2018-08-22 | 2018-10-26 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of oil tube cathode protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210224 Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee after: China Petroleum & Chemical Corp. Patentee after: EAST CHINA BRANCH OF SINOPEC Patentee after: TAIZHOU OIL PRODUCTION PLANT, CHINA PETROLEUM & CHEMICAL CORPORATION EAST CHINA OIL & GAS Co. Address before: 225300 South Passage 99, Hailing District, Taizhou City, Jiangsu Province Patentee before: TAIZHOU OIL PRODUCTION PLANT, CHINA PETROLEUM & CHEMICAL CORPORATION EAST CHINA OIL & GAS Co. |