CN101643609A - Anti-hydrogen sulfide and carbon dioxide internal coating for gathering pipelines - Google Patents
Anti-hydrogen sulfide and carbon dioxide internal coating for gathering pipelines Download PDFInfo
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- CN101643609A CN101643609A CN200810041408A CN200810041408A CN101643609A CN 101643609 A CN101643609 A CN 101643609A CN 200810041408 A CN200810041408 A CN 200810041408A CN 200810041408 A CN200810041408 A CN 200810041408A CN 101643609 A CN101643609 A CN 101643609A
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- defoamer
- percent
- flow agent
- agent
- gathering line
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Abstract
The invention discloses an anti-hydrogen sulfide and carbon dioxide internal coating for use of a gathering pipeline. The coating consists of the following raw materials in percentage by mass: 50 to 60 percent of epoxide resin, 5.5 to 10.5 percent of modified ammonia compound curing agent, 15 to 25 percent of titanium dioxide, 0.2 to 0.5 percent of carbon black, 4.0 to 8.0 percent of talc, 5.0 to10.0 percent of barite powder, 4 to 10 percent of phosphomolybdic acid zinc, 0.1 to 0.5 percent of flatting agent, 0.3 to 0.6 percent of defoamer, and 4.0 to 8.0 percent of mixed solvent, wherein theflatting agent may be polyacrylate flatting agent, polyester modified polyorganosiloxane flatting agent or high boiling point solvent surfactant containing flatting agent; the defoamer may be modifiedpolyorganosiloxane defoamer, fluorine modified oxosilane defoamer or hydrophobic particle containing polyorganosiloxane compound defoamer; and the mixed solvent may be CAC, cyclohexanone or n-butyl alcohol. The coating has the advantages of good mechanical performance, stable chemical properties, low energy consumption and low direct cost of an oil field user.
Description
[technical field]
The present invention relates to coated coating, specifically, is a kind of gathering line anti-H 2 S, carbonic acid gas undercoat coating.
[background technology]
Gathering line anti-H 2 S (H
2S), carbonic acid gas (CO
2) undercoat coating is a kind of novel undercoat protective system that development in recent years is got up.In the defeated process of high sulfur-containing natural gas collection, tend to run into H2S, CO
2, Cl
-Etc. multiple corrosion composition.The existence of these corrosive mediums not only can cause the surface gathering and transferring pipeline heavy corrosion of phenomenons such as boring a hole and break to occur, and makes corrosive complicacy other many equipment far above oil-gas field.The gathering line corrosion is subjected to all multifactor impacts, wherein with H
2S, CO
2Corrosion during coexistence is the most general, and process is also complicated and harsh.Control gathering line H at present
2S, CO
2The corrosive main technique methods is selected for use or is developed the undercoat protective system, and this is not only because undercoat can play certain preservative activity, the more important thing is that to make inner surface of pipeline smooth, reduce frictional resistance, increase throughput rate, lower power consumption, reduce the construction cost and the running maintenance expense of pipeline.Be applicable to the anti-H of gathering line at present
2S, CO
2The undercoat coating variety is a lot, and wherein extensive with epoxide powder coating research, as the 3M company of the U.S., E.I.Du Pont Company and SUMITOMO CHEMICAL metal Co., Ltd. etc. all is the manufacturer of world-renowned epoxy powder.At home, China is to CO
2Research begin twentieth century eighties, specific aim research was carried out in oil fields such as the Chinese Academy of Sciences, Sichuan, Central Plains, long celebrating, had obtained certain achievement, had developed organic class inhibiter of anti-casing corrosion, had alleviated the etching problem in oil field to a certain extent.And at H
2The research of S, Tianjin steel Pipe Co., Ltd. close immortality etc. finished the development of T95 high strength anti-H 2 S telescopic and in December, 1996 first batch of T95 high strength anti-H 2 S sleeve pipe (Φ 244.5mm and 177.8mm specification) through third party inspection qualified and evaluation test successfully carried out the test of going into the well of 14 mouthfuls of wells in Sichuan oilfield in 97 years, obtained oil field user's blanket approval, now promoted the use of in Sichuan oilfield, oil of bay field, Guizhou Province, Yunnan, Xinjiang Oilfield etc.Have again exactly on the basis of the anticorrosive welded tube technical study of being carried out in early stage by Baoji petroleum steel pipe responsibility company limited, anti-sulphur corrosion claims to X52 level spiral submerged arc welded steel pipe according to western certain gas field gathering line, successful development the anti-sulphur corrosion spiral submerged arc welded of X52 level steel pipe, the first batch of 4000t that produces, pipeline came into operation more than 4 years, and operation conditions is good.But anti-H
2S, CO
2The development of corrosive liquid coating does not see that so far what technological breakthrough is arranged.
At present, because the difference of each oil field stratum condition etc., for the generally popularization of aseptic technic has brought difficulty, so prior art can't satisfy the requirement of specific oil field situ production and application, and the deep systematicness of achievement in research also lacks.And the relative coating of X52 level hydrogen sulfide corrosion resistant spiral submerged arc welded steel pipe costs an arm and a leg, and has increased oil field user's cost virtually.The anti-H of gathering line
2S, CO
2Undercoat coating ubiquity bonding force is low, can not protect screw thread, the incompatible harsh shortcomings such as environment of learning, and in addition, also there are the deficiencies of easily aging and aspects such as high temperature resistance, high pressure ability in coating.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, a kind of gathering line anti-H 2 S, carbonic acid gas (H are provided
2S, CO
2) undercoat coating, it can strengthen gathering line and (contain H acid
2S, CO
2, pH≤5), pressure is greater than the antiseptic property under the condition of 5MPa.
Purpose in the present invention is achieved through the following technical solutions:
A kind of gathering line anti-H 2 S, carbonic acid gas undercoat coating, raw material is formed, Resins, epoxy is 50%～60%, be preferably 51%～55%, modification Ammonia composite curing agent is 5.5%～10.5%, is preferably 6.5%～9.5%, titanium dioxide is 15%～25%, be preferably 16%～22%, carbon black is 0.2%～0.5%, is preferably 0.2%～0.4%, talcum powder is 4.0%～8.0%, be preferably 5～7%, ground barium sulfate is 5.0%～10.0%, is preferably 6%～8%, phospho-molybdic acid zinc is 4%～10%, be preferably 6%～8%, flow agent is 0.1%～0.5%, is preferably 0.2%～0.4%, defoamer 0.3%～0.6%, be preferably 0.4%～0.5%, mixed solvent 4.0%～8.0% is preferably 5.0%～7.0%;
Described flow agent is selected from polyacrylate flow agent, polyester-modified polysiloxanes flow agent, high boiling solvent and contains a kind of in the interfacial agent flow agent, is preferably polypropylene acid fat flow agent,
Described defoamer is selected from modified polyorganosiloxane defoamer, fluorine modified siloxane defoamer, contain a kind of in the polysiloxane compound defoamer of hydrophobic particles, is preferably fluorine modified siloxane defoamer,
Described mixed solvent is ethylene glycol ether acetate (CAC), pimelinketone and propyl carbinol, and wherein, three's mass ratio is CAC: pimelinketone: propyl carbinol=1: 2: 1～2.5: 5: 2.5.
A kind of gathering line with anti-H 2 S, carbonic acid gas undercoat preparation method for coating, concrete steps is,
(1) disperses
According to above-mentioned proportioning raw materials raw material is once added in the scuffing of cylinder bore, start dispersion machine simultaneously, stirring at low speed adds raw material while stirring, after the raw material interpolation finishes, so that (1000 change/min) disperse 30min at a high speed;
(2) grind
Scattered coating is put into sand mill carry out sand milling, require sand milling twice, fineness reaches 50 microns;
(3) filter and package
The coating that sand milling is good is put into the finished product still, opens stirrer and stirs, and connects filtering net in the exit, the packing while filtering.
A kind of gathering line of the present invention with the positively effect of anti-H 2 S, carbonic acid gas undercoat coating is:
(1) liquid coating of the present invention is high solid, anti-H 2 S, carbonic acid gas protective system, and with characteristics such as wear-resisting, drag reductions, and this paint machine excellent property, chemical property are stable;
(2) high solid greatly reduces the quantity discharged of the VOC of this coating, makes this coating more approach environment-friendly type solvent-free coating, and good construction performance makes this coating can adapt to any Airless spraying equipment;
(3) the present invention has carried out a new technological breakthrough in the liquid heavy-duty coating; make the liquid heavy-duty coating of China stride forward major step; solved the realistic problem that always perplexs the most of oil field of China; can improve the petroleum production of China greatly; the protection steel pipe is not corroded; thereby cut down the consumption of energy, reduce oil field user's priming cost.
[embodiment]
The embodiment of gathering line of the present invention with anti-H 2 S, carbonic acid gas undercoat coating below is provided.
Embodiment 1
(1) proportioning raw materials:
Raw material consumption (%)
Resins, epoxy 50
Modification Ammonia composite curing agent 5.5
Titanium dioxide 20
Carbon black 0.2
Talcum powder 5.0
Ground barium sulfate 7.5
Phospho-molybdic acid zinc 5.0
Flow agent 0.3
Defoamer 0.5
Mixed solvent 6.0
Described flow agent is selected from the polyacrylate flow agent;
Described defoamer is selected from the modified polyorganosiloxane defoamer;
Described mixed solvent is CAC, pimelinketone and propyl carbinol, and wherein, three's mass ratio is CAC: pimelinketone: propyl carbinol=1: 2: 1.
(2) preparation method:
(1) disperses
According to above-mentioned proportioning raw materials raw material is once added in the scuffing of cylinder bore, start dispersion machine simultaneously, stirring at low speed adds raw material while stirring, after the raw material interpolation finishes, so that (1000 change/min) disperse 30min at a high speed;
(2) grind
Scattered coating is put into sand mill carry out sand milling, require sand milling twice, fineness reaches 50 microns;
(3) filter and package
The coating that sand milling is good is put into the finished product still, opens stirrer and stirs, and connects filtering net in the exit, the packing while filtering.
Embodiment 2
(1) proportioning raw materials:
Raw material consumption (%)
Resins, epoxy 55
Modification Ammonia composite curing agent 6.0
Titanium dioxide 15
Carbon black 0.2
Talcum powder 5.0
Ground barium sulfate 7.0
Phospho-molybdic acid zinc 5.0
Flow agent 0.3
Defoamer 0.5
Mixed solvent 6.0
Described flow agent is selected from the polyester-modified polysiloxanes flow agent;
Described defoamer is selected from fluorine modified siloxane defoamer;
Described mixed solvent is CAC, pimelinketone and propyl carbinol, and wherein, three's mass ratio is CAC: pimelinketone: propyl carbinol=1.5: 3: 2.
(2) preparation method:
With embodiment 1.
Embodiment 3
(1) proportioning raw materials:
Raw material consumption (%)
Resins, epoxy 50
Modification Ammonia composite curing agent 7.0
Titanium dioxide 20
Carbon black 0.2
Talcum powder 5.0
Ground barium sulfate 6.0
Phospho-molybdic acid zinc 5.0
Flow agent 0.3
Defoamer 0.5
Mixed solvent 6.0
Described flow agent is selected from high boiling solvent and contains the interfacial agent flow agent;
Described defoamer is selected from the polysiloxane compound defoamer that contains hydrophobic particles;
Described mixed solvent is CAC, pimelinketone and propyl carbinol, and wherein, three's mass ratio is CAC: pimelinketone: propyl carbinol=2.5: 5: 2.5.
(2) preparation method:
With embodiment 1.
Embodiment 4
(1) proportioning raw materials:
Raw material consumption (%)
Resins, epoxy 51
Modification Ammonia composite curing agent 7.0
Titanium dioxide 17
Carbon black 0.3
Talcum powder 5.5
Ground barium sulfate 6.5
Phospho-molybdic acid zinc 6.5
Flow agent 0.3
Defoamer 0.4
Mixed solvent 5.5
Described flow agent is selected from high boiling solvent and contains the interfacial agent flow agent;
Described defoamer is selected from the polysiloxane compound defoamer that contains hydrophobic particles;
Described mixed solvent is CAC, pimelinketone and propyl carbinol, and wherein, three's mass ratio is CAC: pimelinketone: propyl carbinol=2.5: 5: 2.5.
(2) preparation method:
With embodiment 1.
The products characteristics of a kind of gathering line of the present invention anti-H 2 S, carbonic acid gas undercoat coating:
(1) TC3000C is the inner side anticorrosion coating that is applicable to the various oil pipes, sleeve pipe and the gathering line that are suitable in the construction of natural gas fields;
(2) have good sticking power, wear resistance and corrosion resistance;
(3) the acid resistance corrosive nature is very outstanding, is fit to contain H
2S, CO
2Gasser, recover the oil to produce and miscible gas injection system etc.;
(4) smooth surface can reduce wear, and can reach more than 25% thereby improve flow efficiency.
Gathering line of the present invention is as shown in table 1 with anti-H 2 S, carbonic acid gas undercoat coating technology parameter:
Table 1 technical parameter
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (6)
1. a gathering line is with anti-H 2 S, carbonic acid gas undercoat coating, it is characterized in that, raw material is formed, Resins, epoxy is 50%～60%, modification Ammonia composite curing agent is 5.5%～10.5%, titanium dioxide is 15%～25%, carbon black is 0.2%～0.5%, talcum powder is 4.0%～8.0%, ground barium sulfate is 5.0%～10.0%, and phospho-molybdic acid zinc is 4%～10%, and flow agent is 0.1%～0.5%, defoamer 0.3%～0.6%, mixed solvent are 4.0%～8.0%;
Described flow agent is selected from polyacrylate flow agent, polyester-modified polysiloxanes flow agent or high boiling solvent and contains a kind of in the interfacial agent flow agent;
Described defoamer is selected from modified polyorganosiloxane defoamer, fluorine modified siloxane defoamer or contains a kind of in the polysiloxane compound defoamer of hydrophobic particles;
Described mixed solvent is an ethylene glycol ether acetate, pimelinketone and propyl carbinol, and wherein, three's mass ratio is ethylene glycol ether acetate: pimelinketone: propyl carbinol=1: 2: 1～2.5: 5: 2.5.
2. a kind of gathering line according to claim 1 is characterized in that with anti-H 2 S, carbonic acid gas undercoat coating described Resins, epoxy is preferably 51%～55%; Described modification Ammonia composite curing agent is preferably 6.5%～9.5%.
3. a kind of gathering line according to claim 1 is characterized in that with anti-H 2 S, carbonic acid gas undercoat coating described titanium dioxide is preferably 16%～22%; Described carbon black is preferably 0.2%～0.4%.
4. a kind of gathering line according to claim 1 is characterized in that with anti-H 2 S, carbonic acid gas undercoat coating described talcum powder is preferably 5%～7%; Described ground barium sulfate is preferably 6%～8%.
5. a kind of gathering line according to claim 1 is characterized in that with anti-H 2 S, carbonic acid gas undercoat coating described phospho-molybdic acid zinc is preferably 6%～8%; Described flow agent is preferably 0.2%～0.4%; Described flow agent is preferably polypropylene acid fat flow agent.
6. a kind of gathering line according to claim 1 is characterized in that with anti-H 2 S, carbonic acid gas undercoat coating described defoamer is preferably 0.4%～0.5%, and described mixed solvent is preferably 5.0%～7.0%; Described defoamer is preferably fluorine modified siloxane defoamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041408A CN101643609A (en) | 2008-08-05 | 2008-08-05 | Anti-hydrogen sulfide and carbon dioxide internal coating for gathering pipelines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041408A CN101643609A (en) | 2008-08-05 | 2008-08-05 | Anti-hydrogen sulfide and carbon dioxide internal coating for gathering pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101643609A true CN101643609A (en) | 2010-02-10 |
Family
ID=41655674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810041408A Pending CN101643609A (en) | 2008-08-05 | 2008-08-05 | Anti-hydrogen sulfide and carbon dioxide internal coating for gathering pipelines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101643609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105189671A (en) * | 2013-04-10 | 2015-12-23 | 威士伯采购公司 | Sour gas resistant coating |
-
2008
- 2008-08-05 CN CN200810041408A patent/CN101643609A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105189671A (en) * | 2013-04-10 | 2015-12-23 | 威士伯采购公司 | Sour gas resistant coating |
| CN112680073A (en) * | 2013-04-10 | 2021-04-20 | 宣伟投资管理有限公司 | Acid gas resistant coatings |
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Open date: 20100210 |