CN110899072A - Safety protection method for outer surface coating of underground oil gas process pipeline - Google Patents
Safety protection method for outer surface coating of underground oil gas process pipeline Download PDFInfo
- Publication number
- CN110899072A CN110899072A CN201911075595.6A CN201911075595A CN110899072A CN 110899072 A CN110899072 A CN 110899072A CN 201911075595 A CN201911075595 A CN 201911075595A CN 110899072 A CN110899072 A CN 110899072A
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- CN
- China
- Prior art keywords
- oil
- gas process
- process pipeline
- paint
- coating
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- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1675—Polyorganosiloxane-containing compositions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
Abstract
The invention provides a safety protection method for an outer surface coating of an underground oil and gas process pipeline, which comprises the following steps: cleaning a pipeline, repairing paint, spraying a protective layer and performing post-treatment; the safety protection method for the outer surface coating of the overground oil and gas process pipeline can form a hydrophobic and oleophobic transparent coating with high hardness and high brightness after the outer surface of the overground oil and gas process pipeline is cured, and can effectively improve the performances of water resistance, rust resistance, stain resistance, mildew resistance and the like of the outer surface of the overground oil and gas process pipeline.
Description
Technical Field
The invention belongs to the technical field of pipeline protection, and particularly relates to a safety protection method for an outer surface coating of an underground oil gas process pipeline.
Background
The outer surface of the traditional overground oil and gas process pipeline is only provided with a paint surface layer and is not provided with a protective coating. Since the pipe is exposed to air, condensation can form on the outer surface of the pipe when the temperature of the outer surface of the pipe is below the ambient dew point temperature. Because condensed water drops exist on the outer wall of the pipeline, firstly, the outer surface of the pipeline is not high in cleanliness due to the fact that gray layer oil stains are easy to adhere and mould is easy to breed; secondly, the paint damage part on the outer surface of the pipeline is chemically corroded, so that the pipeline is easily rusted, the wall thickness is reduced, the hole is punched, and the operation safety of the pipeline is influenced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a safety protection method for an outer surface coating of an underground oil and gas process pipeline, which can form a hydrophobic and oleophobic, high-hardness and high-brightness transparent coating after the outer surface of the oil and gas process pipeline is cured, thereby increasing the performances of water resistance, rust resistance, dirt resistance, mildew resistance and the like of the outer surface of the underground oil and gas process pipeline, keeping the outer surface of the oil and gas process pipeline at higher cleanliness all the time, avoiding the phenomena of corrosion, wall thickness reduction, perforation and the like, and providing guarantee for the safe operation of the oil and gas process pipeline.
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for protecting the coating on the outer surface of an underground oil-gas process pipeline safely, which comprises the following steps:
the method comprises the following steps: cleaning a pipeline; removing oil stains, dust and other pollutants on the outer surface of the oil and gas process pipeline, keeping the outer surface of the oil and gas process pipeline dry, improving the adhesive force of a coating material, removing the chemical corrosion part of the paint damage on the outer surface of the oil and gas process pipeline, and removing the corroded part;
step two: repairing paint; paint repairing is carried out on the paint damaged part on the outer surface of the oil-gas process pipeline, a paint protective layer is formed again, and the condition that the spraying of a subsequent protective layer is influenced by the unevenness of the outer surface of the oil-gas process pipeline is avoided;
step three: spraying a protective layer; spraying a protective layer on the outer surface of the oil-gas process pipeline by using an organic silicon polymer coating by adopting a spraying method, so that a uniform film layer is formed on the surface of a base material as a reference;
step four: post-processing; after spraying, the protective layer is naturally dried without baking, and the organic silicon polymer coating forms a hydrophobic and oleophobic, high-hardness and high-brightness transparent coating after being cured on the outer surface of the oil and gas process pipeline, so that the performances of water resistance, rust resistance, stain resistance, mildew resistance and the like of the outer surface of the overground oil and gas process pipeline are increased, the outer surface of the oil and gas process pipeline is always kept at higher cleanliness, the phenomena of corrosion, wall thickness reduction, perforation and the like are avoided, and the safe operation of the oil and gas process pipeline is guaranteed.
In a preferred embodiment of the present invention, the flow rate is required to be reduced and the atomization is required to be uniform during spraying in the third step.
In a preferred embodiment of the present invention, the protective layer may be subjected to a heat treatment to accelerate drying in the fourth step.
In a preferred embodiment of the present invention, the paint repair in the second step is performed by using the same paint as the paint on the outer surface of the oil and gas process pipe.
The invention has the beneficial effects that:
1. according to the method for protecting the outer surface coating of the overground oil and gas process pipeline safely, the organic silicon polymer coating is cured on the outer surface of the oil and gas process pipeline to form a hydrophobic and oleophobic, high-hardness and high-brightness transparent coating, so that the performances of water resistance, rust resistance, stain resistance, mildew resistance and the like of the outer surface of the overground oil and gas process pipeline can be effectively improved, the outer surface of the oil and gas process pipeline is always kept at high cleanliness, the phenomena of corrosion, wall thickness reduction, perforation and the like are avoided, and the safe operation of the oil and gas.
2. The safety protection method for the outer surface coating of the overground oil and gas process pipeline has the advantages of simple steps, strong practicability and suitability for popularization.
Drawings
FIG. 1 is a schematic flow chart showing the steps of a method for protecting the outer surface coating of an underground oil and gas process pipe from damage;
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the present invention provides a technical solution: a method for protecting the coating on the outer surface of an underground oil-gas process pipeline safely, which comprises the following steps:
the method comprises the following steps: cleaning a pipeline; removing oil stains, dust and other pollutants on the outer surface of the oil and gas process pipeline, keeping the outer surface of the oil and gas process pipeline dry, improving the adhesive force of a coating material, removing the chemical corrosion part of the paint damage on the outer surface of the oil and gas process pipeline, and removing the corroded part;
step two: repairing paint; paint repairing is carried out on the paint damaged part on the outer surface of the oil-gas process pipeline, a paint protective layer is formed again, and the condition that the spraying of a subsequent protective layer is influenced by the unevenness of the outer surface of the oil-gas process pipeline is avoided;
step three: spraying a protective layer; spraying a protective layer on the outer surface of the oil-gas process pipeline by using an organic silicon polymer coating by adopting a spraying method, so that a uniform film layer is formed on the surface of a base material as a reference;
step four: post-processing; after spraying, the protective layer is naturally dried without baking, and the organic silicon polymer coating forms a hydrophobic and oleophobic, high-hardness and high-brightness transparent coating after being cured on the outer surface of the oil and gas process pipeline, so that the performances of water resistance, rust resistance, stain resistance, mildew resistance and the like of the outer surface of the overground oil and gas process pipeline are increased, the outer surface of the oil and gas process pipeline is always kept at higher cleanliness, the phenomena of corrosion, wall thickness reduction, perforation and the like are avoided, and the safe operation of the oil and gas process pipeline is guaranteed.
In a preferred embodiment of the present invention, the flow rate is required to be reduced and the atomization is required to be uniform during spraying in the third step.
In a preferred embodiment of the present invention, the protective layer may be subjected to a heat treatment to accelerate drying in the fourth step.
In a preferred embodiment of the present invention, the paint repair in the second step is performed by using the same paint as the paint on the outer surface of the oil and gas process pipe.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A safety protection method for an outer surface coating of an underground oil and gas process pipeline is characterized by comprising the following steps:
the method comprises the following steps: cleaning a pipeline; removing oil stains, dust and other pollutants on the outer surface of the oil and gas process pipeline, keeping the outer surface of the oil and gas process pipeline dry, improving the adhesive force of a coating material, removing the chemical corrosion part of the paint damage on the outer surface of the oil and gas process pipeline, and removing the corroded part;
step two: repairing paint; paint repairing is carried out on the paint damaged part on the outer surface of the oil-gas process pipeline, a paint protective layer is formed again, and the condition that the spraying of a subsequent protective layer is influenced by the unevenness of the outer surface of the oil-gas process pipeline is avoided;
step three: spraying a protective layer; spraying a protective layer on the outer surface of the oil-gas process pipeline by using an organic silicon polymer coating by adopting a spraying method, so that a uniform film layer is formed on the surface of a base material as a reference;
step four: post-processing; after spraying, the protective layer is naturally dried without baking, and the organic silicon polymer coating forms a hydrophobic and oleophobic, high-hardness and high-brightness transparent coating after being cured on the outer surface of the oil and gas process pipeline, so that the performances of water resistance, rust resistance, stain resistance, mildew resistance and the like of the outer surface of the overground oil and gas process pipeline are increased, the outer surface of the oil and gas process pipeline is always kept at higher cleanliness, the phenomena of corrosion, wall thickness reduction, perforation and the like are avoided, and the safe operation of the oil and gas process pipeline is guaranteed.
2. The safety protection method for the coating on the outer surface of the underground oil and gas process pipeline according to claim 1, characterized in that: in the third step, the flow is required to be reduced and the atomization is required to be uniform during spraying.
3. The safety protection method for the coating on the outer surface of the underground oil and gas process pipeline according to claim 1, characterized in that: in the fourth step, the protective layer can also be subjected to heat treatment to accelerate drying.
4. The safety protection method for the coating on the outer surface of the underground oil and gas process pipeline according to claim 1, characterized in that: and in the second step, the same variety as the paint on the outer surface of the oil-gas process pipeline is used for paint repair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075595.6A CN110899072A (en) | 2019-11-06 | 2019-11-06 | Safety protection method for outer surface coating of underground oil gas process pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075595.6A CN110899072A (en) | 2019-11-06 | 2019-11-06 | Safety protection method for outer surface coating of underground oil gas process pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110899072A true CN110899072A (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911075595.6A Pending CN110899072A (en) | 2019-11-06 | 2019-11-06 | Safety protection method for outer surface coating of underground oil gas process pipeline |
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| Country | Link |
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| CN (1) | CN110899072A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877788A (en) * | 2021-10-27 | 2022-01-04 | 盘锦金田塑业有限公司 | Multilayer film coating method and device for surface of BOPP film |
Citations (5)
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|---|---|---|---|---|
| RU2109787C1 (en) * | 1992-07-17 | 1998-04-27 | Монтелл Норт Америка Инк. | Method of repairing plastic coatings on metallic pipes and repair coating |
| CN101028619A (en) * | 2006-02-27 | 2007-09-05 | 徐州正菱涂装有限公司 | Method for surface holidying or repairing loss-part after coating metal powder |
| CN104534221A (en) * | 2015-01-06 | 2015-04-22 | 北京力强基业工程技术有限公司 | Method for repairing and reinforcing pipeline by means of composite materials |
| CN108223971A (en) * | 2017-12-26 | 2018-06-29 | 重庆安特管业有限公司 | A kind of antiseptic finish method of gas piping |
| CN109630808A (en) * | 2018-12-24 | 2019-04-16 | 山东祺龙海洋石油钢管股份有限公司 | A kind of novel pipeline anti-corrosion process for protecting |
-
2019
- 2019-11-06 CN CN201911075595.6A patent/CN110899072A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2109787C1 (en) * | 1992-07-17 | 1998-04-27 | Монтелл Норт Америка Инк. | Method of repairing plastic coatings on metallic pipes and repair coating |
| CN101028619A (en) * | 2006-02-27 | 2007-09-05 | 徐州正菱涂装有限公司 | Method for surface holidying or repairing loss-part after coating metal powder |
| CN104534221A (en) * | 2015-01-06 | 2015-04-22 | 北京力强基业工程技术有限公司 | Method for repairing and reinforcing pipeline by means of composite materials |
| CN108223971A (en) * | 2017-12-26 | 2018-06-29 | 重庆安特管业有限公司 | A kind of antiseptic finish method of gas piping |
| CN109630808A (en) * | 2018-12-24 | 2019-04-16 | 山东祺龙海洋石油钢管股份有限公司 | A kind of novel pipeline anti-corrosion process for protecting |
Non-Patent Citations (1)
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| 马一平等: "《建筑功能材料》", 31 March 2014, 同济大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877788A (en) * | 2021-10-27 | 2022-01-04 | 盘锦金田塑业有限公司 | Multilayer film coating method and device for surface of BOPP film |
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Application publication date: 20200324 |