CN207847542U - Coating injection well tubing - Google Patents
Coating injection well tubing Download PDFInfo
- Publication number
- CN207847542U CN207847542U CN201721421615.7U CN201721421615U CN207847542U CN 207847542 U CN207847542 U CN 207847542U CN 201721421615 U CN201721421615 U CN 201721421615U CN 207847542 U CN207847542 U CN 207847542U
- Authority
- CN
- China
- Prior art keywords
- coating
- layer
- injection well
- well tubing
- corrosion
- 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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Abstract
The utility model provides coating injection well tubing, the wherein coating injection well tubing, including composite coating, tube body, external anti-corrosion layer, the tube body outer application has one layer of external anti-corrosion layer, one layer of composite coating is coated on the inside of the tube body, the composite coating includes from sacrifice bottom, organic inhibition middle layer, anti-stick top layer；Advantage is：The anti-sticking anti-corrosion capability of composite coating is strong, and the water contact angle on surface is obtuse angle, and favorable anti-corrosion effect, service life is long, and fouling is poor, has good application value.
Description
Technical field
The utility model is related to antisepsis oil pipe technical fields, more particularly, to a kind of coating injection well tubing.
Background technology
Currently, as China's oilfield exploitation time increases, into tertiary oil recovery after the new oil recovery work such as dosing, polymer injection
Skill so that injection water quality constantly deteriorates and oxide sulfate reducing bacteria gradually increases, and thus caused pipe string of oil field downhole is tight
Heavy corrosion, fouling have become " chronic disease " of puzzlement water injection well.The investigation of China Central Plains, Shengli Oil Field is found, the two oil fields
The tubing string caused by corrosion, piping material take direct economic loss respectively up to 1.4 hundred million yuan, 300,000,000 yuan；Due to replacing tubing string, pipe
Line influences production, causes indirect economic loss up to 1,000,000,000 yuan or so.Corrosion and scaling illness is not removed, and cost is not only difficult to decrease,
Also the construction of Customers ' Legal Right water injection well.
Invention content
The purpose of this utility model is that solve the deficiencies in the prior art, and coating injection well tubing is provided.
The new technical solution of the utility model is：Coating injection well tubing, including composite coating, tube body, external anti-corrosion layer, institute
The tube body outer application stated has one layer of external anti-corrosion layer, and one layer of composite coating, the compound painting are coated on the inside of the tube body
Layer includes from sacrifice bottom, organic inhibition middle layer, anti-stick top layer.
Described is the inorganic salts aluminized coating that inorganic salts and aluminium powder form from bottom is sacrificed.
Organic inhibition middle layer is the coating being made of resin, inorganic salts and aluminium powder, which is known materials,
But there is no general titles, and it is " aluminium resinous coat " to schedule herein.
The anti-stick top layer is the polyflon composite coating being made of resin and polytetrafluoroethylene (PTFE).
The external anti-corrosion layer is nm-class Ti polymer coating or epoxy type coating.
The inorganic salts are the inorganic salts for having the effect of corrosion inhibition.
The utility model has the beneficial effects that：The anti-sticking anti-corrosion capability of composite coating is strong, and the water contact angle on surface is blunt
Angle；The bond strength of composite coating and matrix is very high, it ensure that reliability when composite coating uses on product and
Safety.Injection well tubing surface is smooth, and favorable anti-corrosion effect, service life is long, and fouling is poor, has good using valence
Value.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Wherein：1 is composite coating, and 2 be tube body, and 3 be external anti-corrosion layer, and 11 is, from bottom is sacrificed, 12 is among organic inhibition
Layer, 13 be anti-stick top layer.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
Coating injection well tubing, including inner coating injection well tubing, including composite coating 1, tube body 2, external anti-corrosion layer 3, institute
2 outer application of tube body stated has one layer of external anti-corrosion layer 3,2 inside of tube body to be coated with one layer of composite coating 1, and described answers
It includes from sacrifice bottom 11, organic inhibition middle layer 12, anti-stick top layer 13 to close coating 1.
Described is the inorganic salts aluminized coating that inorganic salts and aluminium powder form from bottom 11 is sacrificed.
Organic inhibition middle layer 12 is the coating being made of resin, inorganic salts and aluminium powder, which is known material
Material, but there is no general titles, and it is " aluminium resinous coat " to schedule herein.
The anti-stick top layer 13 is to be applied by the polyflon composite material that resin and polytetrafluoroethylene (PTFE) form
Layer.
The external anti-corrosion layer 3 is nano-titanium polymer coating or epoxy type coating.
The inorganic salts are the inorganic salts for having the effect of corrosion inhibition.
Claims (6)
1. coating injection well tubing, including composite coating（1）, tube body（2）, external anti-corrosion layer（3）, it is characterised in that：The pipe
Body（2）Outer application has one layer of external anti-corrosion layer（3）, the tube body（2）Inside is coated with one layer of composite coating（1）, described
Composite coating（1）Including sacrificing bottom certainly（11）, organic inhibition middle layer（12）, anti-stick top layer（13）.
2. coating injection well tubing according to claim 1, it is characterised in that：Described sacrifices bottom certainly（11）It is inorganic
The inorganic salts aluminized coating of salt and aluminium powder composition.
3. coating injection well tubing according to claim 1, it is characterised in that：Organic inhibition middle layer（12）For
The aluminium resinous coat being made of resin, inorganic salts and aluminium powder.
4. coating injection well tubing according to claim 1, it is characterised in that：The anti-stick top layer（13）For by setting
The polyflon composite coating of fat and polytetrafluoroethylene (PTFE) composition.
5. coating injection well tubing according to claim 1, it is characterised in that：The external anti-corrosion layer（3）For titanium nanometer
Polymer coating or epoxy type coating.
6. coating injection well tubing according to claim 2 or 3, it is characterised in that：The inorganic salts are to have corrosion to press down
The inorganic salts of making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421615.7U CN207847542U (en) | 2017-10-31 | 2017-10-31 | Coating injection well tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421615.7U CN207847542U (en) | 2017-10-31 | 2017-10-31 | Coating injection well tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207847542U true CN207847542U (en) | 2018-09-11 |
Family
ID=63426540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721421615.7U Active CN207847542U (en) | 2017-10-31 | 2017-10-31 | Coating injection well tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207847542U (en) |
-
2017
- 2017-10-31 CN CN201721421615.7U patent/CN207847542U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |