CN206206816U - A kind of outer corrosion-resistant thermal insulation oil pipe - Google Patents
A kind of outer corrosion-resistant thermal insulation oil pipe Download PDFInfo
- Publication number
- CN206206816U CN206206816U CN201620901286.5U CN201620901286U CN206206816U CN 206206816 U CN206206816 U CN 206206816U CN 201620901286 U CN201620901286 U CN 201620901286U CN 206206816 U CN206206816 U CN 206206816U
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- Prior art keywords
- thermal insulation
- corrosion
- resistant thermal
- oil pipe
- insulation oil
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Abstract
The utility model provides a kind of outer corrosion-resistant thermal insulation oil pipe, including parent metal pipe, and described matrix outer surface of metal pipe is sequentially provided with solid epoxy bottom high, intermediate adhesive layer and corrosion-resistant thermal insulation surface layer from the inside to the outside.After this outer corrosion-resistant thermal insulation oil pipe lower going-into-well cylinder that the utility model is provided, high salinity stratum output corrosion oil pipe can be effectively prevented.Meanwhile, the addition of insulation material can reduce heat loss of the crude oil in pit shaft, prevent wax core from separating out, and reach wax control result.
Description
Technical field
The utility model belongs to oil extraction in oil field technical field, and in particular to a kind of outer corrosion-resistant thermal insulation oil pipe, prevents oil pipe rotten
Erosion and crude oil wax.
Background technology
In oilfield process, corrosion and wax deposition are one of problems of influence oil well production, especially for high mineralization
Degree recovered water and wax content in crude oil block high.Corrosion can cause oil pipe to perforate, and accelerate oil pipe abrasion；And wax deposition can block fuel-displaced
Passage, increase wellhead back pressure, reduction oil well output, while can also increase oil well load, cause production accident.
Outer anti-corrosion measure is not taken flow string generally at present, and oil pipe Paraffin Removal is mainly clear using mechanical paraffin cutting method, dosing
Wax method, sound wave electromagnetic method, thermodynamic cycle heating etc., such method is relatively costly and needs human resources to safeguard, management cost
Greatly.
Existing corrosion-resistant thermal insulation oil pipe heat-insulation layer is quality of rubber materials, foamed plastic material or felt material, extensive use
Be incubated in ground and submerged pipeline, but such material wall thickness is larger, due to being limited by oil sets annular space, under enter the pit shaft that recovers the oil and deposit
In potential safety hazard.
Utility model content
The purpose of this utility model is the above-mentioned deficiency for overcoming prior art, there is provided a kind of outer corrosion-resistant thermal insulation oil pipe, effectively
Prevent tube corrosion, the condensation of crude oil wax core.
Therefore, the utility model provides a kind of outer corrosion-resistant thermal insulation oil pipe, including parent metal pipe, it is characterised in that：Institute
State parent metal tube outer surface and be sequentially provided with solid epoxy bottom high, intermediate adhesive layer and corrosion-resistant thermal insulation surface layer from the inside to the outside.
The solid epoxy bottom high, intermediate adhesive layer and corrosion-resistant thermal insulation surface thickness sum are between 2.5-3.5mm.
The solid epoxy bottom solids content mass percent ＞ 94% high, coating layer thickness is 100-200 μm.
The intermediate adhesive layer is Ni-Cr/Al coatings, and coating layer thickness is 150-250 μm.
The corrosion-resistant thermal insulation surface thickness is 2.2-3.1mm.
The beneficial effects of the utility model are：
After this outer corrosion-resistant thermal insulation oil pipe lower going-into-well cylinder that the utility model is provided, high salinity stratum can be effectively prevented
Output corrosion oil pipe.Meanwhile, the addition of insulation material can reduce heat loss of the crude oil in pit shaft, prevent wax core from separating out, and reach
To wax control result.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the schematic cross-section of the outer corrosion-resistant thermal insulation oil pipe of the utility model.
In figure：1st, parent metal pipe；2nd, solid epoxy bottom high；3rd, intermediate adhesive layer；4th, corrosion-resistant thermal insulation surface layer.
Specific embodiment
Below in conjunction with accompanying drawing to the utility model in outer corrosion-resistant thermal insulation oil pipe be clearly and completely described.Obviously,
Described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.Based on the utility model
In embodiment, all other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of the utility model protection.
Embodiment 1：
In order to effectively prevent the condensation of tube corrosion, crude oil wax core, a kind of outer corrosion-resistant thermal insulation oil pipe is present embodiments provided,
Including parent metal pipe 1, the outer surface of described matrix metal tube 1 is sequentially provided with solid epoxy bottom 2, intermediate adhesive layer high from the inside to the outside
3 and corrosion-resistant thermal insulation surface layer 4.
As shown in accompanying drawing 1, the matrix of outer corrosion-resistant thermal insulation oil pipe is metal tube, is applied in the outer surface of parent metal pipe 1 high
Gu epoxy bottom 2, is intermediate adhesive layer 3 on the solid epoxy bottom 2 of height, outermost is corrosion-resistant thermal insulation surface layer 4.
The outer surface of parent metal pipe 1 is pre-processed（Derust, desalt）Afterwards, in the outer surface even application of parent metal pipe 1
Solid epoxy bottom 2, intermediate adhesive layer 3 and corrosion-resistant thermal insulation surface layer 4 high successively, realize anti-corrosion and heat-insulated, reduce crude oil in pit shaft
Heat loss, prevent tube corrosion wax deposition.
Corrosion-resistant thermal insulations coating in the present embodiment China and foreign countries is composite coating structure, by the solid epoxy bottom 2, intermediate adhesive layer 3 of height with
And corrosion-resistant thermal insulation surface layer 4 once sprays film forming completion.Wherein, intermediate adhesive layer 3 is used to be bonded anticorrosive heat insulating surface layer.
Embodiment 2：
On the basis of embodiment 1, a kind of outer corrosion-resistant thermal insulation oil pipe, the solid epoxy bottom 2 of height, centre are present embodiments provided
Tack coat 3 and the thickness sum of corrosion-resistant thermal insulation surface layer 4 are between 2.5-3.5mm.
The solid epoxy bottom 2 of height is formed using paint solidification containing solids epoxy high, and solids content mass percent ＞ 94% is applied
Thickness degree is 100-200 μm；Intermediate adhesive layer 3 is Ni-Cr/Al coatings, and coating layer thickness is 150-250 μm；The corrosion-resistant thermal insulation
The thickness of surface layer 4 is 2.2-3.1mm, using polyethylene and mica sheet according to mass ratio 3:1 mixes.
Wherein, the solid thickness of epoxy bottom 2 high is preferably 150 μm, and the thickness of intermediate adhesive layer 3 is preferably 200 μm.The present embodiment
Middle solid epoxy bottom 2 high is curable type epoxy resin prime paint high, directly can be commercially available in market.
The outer corrosion-resistant thermal insulation oil pipe that the utility model is provided all uses oil pipe on pump according to the lower-continuous mapping of individual well
Anticorrosive heat insulating oil pipe, such as lower-continuous mapping of a bite well are 1500m, then in the pump top outer corrosion-resistant thermal insulation oil pipes of connection 1500m
Play a part of to prevent oil-pipe external wall from corroding and inwall wax deposition.
In sum, the utility model can effectively prevent high salinity stratum output corrosion oil pipe, meanwhile, heat-insulated material
The addition of material can reduce heat loss of the crude oil in pit shaft, prevent wax core from separating out, and wax control result be reached, without later maintenance.
The method and structure that various embodiments above is not described in detail belongs to the common knowledge of the industry, does not chat one by one here
State.
Exemplified as above is only for example, not constituting to protection domain of the present utility model to of the present utility model
Limitation, every design same or analogous with the utility model is belonged within protection domain of the present utility model.
Claims (5)
1. a kind of outer corrosion-resistant thermal insulation oil pipe, including parent metal pipe（1）, it is characterised in that：Described matrix metal tube（1）Outer surface
Solid epoxy bottom high is sequentially provided with from the inside to the outside（2）, intermediate adhesive layer（3）And corrosion-resistant thermal insulation surface layer（4）.
2. a kind of outer corrosion-resistant thermal insulation oil pipe according to claim 1, it is characterised in that：The solid epoxy bottom high（2）, in
Between tack coat（3）And corrosion-resistant thermal insulation surface layer（4）Thickness sum is between 2.5-3.5mm.
3. a kind of outer corrosion-resistant thermal insulation oil pipe according to claim 2, it is characterised in that：The solid epoxy bottom high（2）Gu
Body content mass percent ＞ 94%, coating layer thickness is 100-200 μm.
4. a kind of outer corrosion-resistant thermal insulation oil pipe according to claim 2, it is characterised in that：The intermediate adhesive layer（3）It is Ni-
Cr/Al coatings, coating layer thickness is 150-250 μm.
5. a kind of outer corrosion-resistant thermal insulation oil pipe according to claim 2, it is characterised in that：The corrosion-resistant thermal insulation surface layer（4）It is thick
It is 2.2-3.1mm to spend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620901286.5U CN206206816U (en) | 2016-08-19 | 2016-08-19 | A kind of outer corrosion-resistant thermal insulation oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620901286.5U CN206206816U (en) | 2016-08-19 | 2016-08-19 | A kind of outer corrosion-resistant thermal insulation oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206816U true CN206206816U (en) | 2017-05-31 |
Family
ID=58755852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620901286.5U Active CN206206816U (en) | 2016-08-19 | 2016-08-19 | A kind of outer corrosion-resistant thermal insulation oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206816U (en) |
-
2016
- 2016-08-19 CN CN201620901286.5U patent/CN206206816U/en active Active
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