CN101182410A - Oil field inhibitor - Google Patents
Oil field inhibitor Download PDFInfo
- Publication number
- CN101182410A CN101182410A CNA2007101868469A CN200710186846A CN101182410A CN 101182410 A CN101182410 A CN 101182410A CN A2007101868469 A CNA2007101868469 A CN A2007101868469A CN 200710186846 A CN200710186846 A CN 200710186846A CN 101182410 A CN101182410 A CN 101182410A
- Authority
- CN
- China
- Prior art keywords
- organic
- acid
- inhibiter
- reaction
- organic amine
- 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.)
- Granted
Links
Landscapes
- Lubricants (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to an oilfield inhibitor. The invention is characterized in that the inhibitor is made by compounding imidazolines quaternarized and modified product and organic phosphonate copolymer according to a proportion of (1.5-2) to (0.8-1.2); wherein, the imidazolines quaternarized and modified product is synthesized by industrial organic acid, diethylenetriamine, xylene and nitrogen compounds according to chemical dose reaction; the organic phosphonate copolymer is synthesized by organic amine, aldehyde and inorganic phosphide according to chemical dose reaction. Because the molecular structure (the molecular structure of the quaternarized imidazolines and the phosphonate) of oilfield inhibitor contains polarity groups (namely hydrophilic group) of strong absorption performance, the invention not only can prevent the corrosion caused by H2S and SRB, but also can prevent the corrosion caused by CO2 and uneven scaling; the inhibiting performance is excellent and the cost is low.
Description
Technical field
The present invention relates to the petrochemical technology field, particularly relate to a kind of corrosion inhibitor for oil field.
Background technology
Corrosion is serious problems that exist in the oilfield process, continuing particularly along with the oil-field development time, the moisture of crude oil raises year by year, corrosion such as pit shaft and ground gathering pipeline, equipment, container is serious day by day, very short time scraps with regard to being corroded perforation, directly influences the ordinary production in oil field.
Corrosion processes in oilfield produced waste water such as oil field pit shaft and surface pipeline, equipment, container, though also belong to galvanic corrosion, but the corrosion of this system does not but resemble the corrosion in acid solution, but very complicated corrosion process, the acting in conjunction that is multiple factor causes, and studies show that: the principal element that causes down-hole and ground-level corrosion in the oil field is H
2S, CO
2, SRB and inhomogeneous fouling cause that its major cause is because oilfield produced waste water water quality complexity promptly is dissolved with plurality of inorganic salt class (salinity height), also may be dissolved with sour gas, as CO
2, H
2S and O
2Deng.In addition, also contain various bacteria and microorganism.These materials exist in water quality, bring serious corrosion all can for the oil field production facility.In order to control or prevent the oil field corrosion effectively, the method that each elephant of the whole nation is taked is a lot: reasonable material or change material are formed; Adopt suitable coating compounds; Change the corrosive medium composition; Add inhibiter etc.Defectives such as these ubiquity cost height and narrow application range.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, provide a kind of and can prevent H
2The corrosion that S and SRB cause can prevent CO again
2The corrosion that causes with inhomogeneous fouling, and cost is low, the corrosion inhibitor for oil field that corrosion mitigating effect is good.
Well behaved inhibiter, its molecular structure must possess amphipathic, has both contained the hydrophobic group of certain hydrocarbon chain length, also will contain the polar group stronger to the metal adsorption performance (being hydrophilic group), just comparatively ideal corrosion inhibition can be arranged.
The present invention just is being based on above-mentioned principle and is setting up, it is concrete adopt technical scheme be:
A kind of corrosion inhibitor for oil field, it is characterized in that this inhibiter be by the quaternised modified product of tetrahydroglyoxaline and organic phospho acid saline copolymer according to 1.5-2: the 0.8-1.2 ratio is composite to form;
Wherein the quaternised modified product of tetrahydroglyoxaline is synthetic according to the chemical dose reaction by industrial organic acid, organic amine, dimethylbenzene and nitrogenous compound;
The organic phospho acid saline copolymer is synthetic according to the chemical dose reaction by organic amine, aldehydes and inorganic phosphide;
The synthetic reaction process of the quaternised modified product of above-mentioned tetrahydroglyoxaline is: at first according to dosage add industrial organic acid and organic amine, dimethylbenzene in the reaction flask, under constantly stirring, be warming up to 100～110 ℃ of reactions 55-60 minute, be warmed up to 200～210 ℃ of reactions 90-95 minute again, after with the product that obtains again with nitrogenous compound reaction cooling in 95-100 minute after promptly;
Described industrial organic acid is oleic acid or naphthenic acid;
Described nitrogenous compound is zephiran chloride ammonium, alkyl trimethyl ammonium chloride or polyquaternium;
The synthetic reaction process of above-mentioned organic phospho acid saline copolymer is: at first organic amine and water are added in the flask, slowly drip aldehydes solution then, slowly drip inorganic phosphide again, control reaction temperature 40-42 ℃, after waiting to add inorganic phosphide, be warming up to 100 ℃～105 ℃, reacted 2～3 hours, get final product;
Described organic amine is quadrol, diethylenetriamine or hexanediamine;
Described aldehydes is a formaldehyde;
Described inorganic phosphide is phosphorus trichloride or phosphorous acid.
The present invention has good corrosion inhibition, exactly because contain the polar group stronger to the metal adsorption performance (being hydrophilic group) in its molecular structure: the molecular structure of quaternised imidazoline structure, phosphonate.
Three N atoms all have lone-pair electron and the absorption of Fe coordinate bond on the quaternised imidazoline structure, and this coordinate bond is a chemical bond, and adsorptive power is very strong, is difficult for desorption, is enough to replace corrosive medium from metallic surface row, plays good corrosion inhibition, prevents H
2S, CO
2Corrosion; The quaternary ammonium salt cationic group that links to each other with imidazoline structure simultaneously plays germ-resistant purpose; Composite with efficient scale inhibitor, can play scale effect, can prevent underdeposit corrosion.
Its outward appearance of the present invention is brown or yellow liquid, effective content 100%, and density (20 ℃) is 1.0～1.2g/cm
3, zero pour≤-8 ℃, pH value 5～7, soluble in water.
Inhibiter of the present invention under different concentration, at the You Fang village, red well, Hao Tuo Liang, Wu Banner oil field extracted water, is carried out corrosion inhibition and measures, the results are shown in Table 1.Working method is tried to achieve the corrosion inhibition rate of used inhibiter to the A3 steel disc according to the regulation of oil and gas industry standard SY 5273-1991 by blank and dosing inhibition speed.
Table 1 inhibiter YZHS-1 of the present invention corrosion mitigating effect evaluation in different oil field extracted waters
| Corrosive medium | Erosion rate mm/a | Corrosion inhibition rate/% | |
| Blank | 100mg/L | ||
| Oil one (slurry tank) decided quiet one (slurry tank) willow 33-49 Liu Ping of the 121-7 station block station king 44 of slurry tank Wu 69-67 king family | 0.094 0.107 0.199 0.143 0.125 0.128 0.147 0.103 | 0.019 0.021 0.037 0.028 0.022 0.021 0.032 0.018 | 79.59 80.63 81.61 80.13 82.31 83.54 78.52 82.67 |
Can find out that from table 1 inhibiter YZHS-1 of the present invention has good corrosion inhibition for the oil well and the ground system of seriously corroded, its corrosion inhibition rate can reach 80%.Erosion rate all can reach the petroleum industry standard (＜0.076mm/a).
Effect of field application of the present invention is remarkable, inhibiter YZHS-1 of the present invention will test on the oil well of 120 mouthfuls of fast heavy corrosions of field area such as Wu Banner, the You Fang village, Pan Gu's beam, ZJ2 successively the end of the year 2004, from the test situation of coming 2 years more, 84 mouthfuls of well inspection pumps are arranged, the pump detection period average out to is 83 days before the dosing, after the dosing 263 days, 180 days have been prolonged.The pump detection period average out to is 178 days before 36 mouthfuls of well dosings of other of dosing, and average ordinary production 562 days after the dosing has the longlyest extended to 612 days, and result of use is remarkable.
Embodiment
1. the quaternised modified product of tetrahydroglyoxaline is synthetic
Prepare raw material according to the chemical reaction metering: industrial organic acid (oleic acid or naphthenic acid), organic amine (quadrol, diethylenetriamine or hexanediamine), dimethylbenzene and nitrogenous compound (zephiran chloride ammonium, alkyl trimethyl ammonium chloride or polyquaternium).
Major equipment adopts: electric mixer, three neck reaction flasks, condensing works and thermostatically heating cover.
Concrete synthetic method is: in the reaction flask that agitator, prolong, drop funnel, thermometer are housed, again stoichiometric industrial organic acid and organic amine, dimethylbenzene are pressed in the adding reaction flask, under constantly stirring, be warming up to 100～110 ℃ of reaction 1h, after being warmed up to 200～210 ℃ of reaction 1.5h again, obtain imidazolinium compounds, again itself and nitrogenous compound are obtained Vandyke brown liquid by a certain percentage after 110～115 ℃ of reactions cooling in 95-100 minute, be the quaternised modified product of tetrahydroglyoxaline.
2. the organic phospho acid saline copolymer is synthetic
Prepare raw material according to the chemical reaction metering: organic amine (quadrol, diethylenetriamine or hexanediamine), aldehydes (formaldehyde), inorganic phosphide (phosphorus trichloride or phosphorous acid).
Major equipment adopts: equipment electric mixer, four-hole boiling flask, electric mantle, thermometer, condensing works, Dropping feeder, device for absorbing tail gas.
Concrete synthetic method is: earlier quantitative organic amine and water are added in the flask, slowly drip aldehydes solution then, slowly drip inorganic phosphide, 40 ℃ of control reaction temperature after adding aldehyde.After adding inorganic phosphide, be warming up to about 100 ℃～105 ℃, continue the reaction certain hour.Get brown yellow transparent liquid after the cooling and be product.
3. inhibiter is synthetic
With the quaternised modified product of above-mentioned tetrahydroglyoxaline and organic phospho acid saline copolymer mixed, promptly get high-efficient corrosion inhibitor YZHS-1 according to 2: 1.The gained inhibiter, its outward appearance is brown or yellow liquid, effective content 100%, density (20 ℃) is 1.0～1.2g/cm
3, zero pour≤-8 ℃, pH value 5～7, soluble in water.
Claims (8)
1. corrosion inhibitor for oil field, it is characterized in that this inhibiter be by the quaternised modified product of tetrahydroglyoxaline and organic phospho acid saline copolymer according to 1.5-2: the 0.8-1.2 ratio is composite to form.
Wherein the quaternised modified product of tetrahydroglyoxaline is synthetic according to the chemical dose reaction by industrial organic acid, organic amine, dimethylbenzene and nitrogenous compound;
The organic phospho acid saline copolymer is synthetic according to the chemical dose reaction by organic amine, aldehydes and inorganic phosphide.
2. according to the described corrosion inhibitor for oil field of claim 1, the synthetic reaction process that it is characterized in that the quaternised modified product of above-mentioned tetrahydroglyoxaline is: at first according to dosage add industrial organic acid and organic amine, dimethylbenzene in the reaction flask, under constantly stirring, be warming up to 100～110 ℃ of reactions 55-60 minute, be warmed up to 200～210 ℃ of reactions 90-95 minute again, after with the product that obtains again with nitrogenous compound reaction cooling in 95-100 minute after promptly.
3. according to claim 1 or 2 described corrosion inhibitor for oil field, it is characterized in that: described industrial organic acid is oleic acid or naphthenic acid.
4. according to claim 1 or 2 described inhibiter, it is characterized in that: described nitrogenous compound is zephiran chloride ammonium, alkyl trimethyl ammonium chloride or polyquaternium.
5. according to the described inhibiter of claim 1, the synthetic reaction process that it is characterized in that above-mentioned organic phospho acid saline copolymer is: at first organic amine and water are added in the flask, slowly drip aldehydes solution then, slowly drip inorganic phosphide again, control reaction temperature 40-42 ℃, after waiting to add inorganic phosphide, be warming up to 100 ℃～105 ℃, reacted 2～3 hours, and got final product.
6. according to claim 1 or 5 described inhibiter, it is characterized in that: described organic amine is quadrol, diethylenetriamine or hexanediamine.
7. according to claim 1 or 5 described inhibiter, it is characterized in that: described aldehydes is a formaldehyde.
8. according to claim 1 or 5 described inhibiter, it is characterized in that: described inorganic phosphide is phosphorus trichloride or phosphorous acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101868469A CN101182410B (en) | 2007-11-22 | 2007-11-22 | Oil field inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101868469A CN101182410B (en) | 2007-11-22 | 2007-11-22 | Oil field inhibitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101182410A true CN101182410A (en) | 2008-05-21 |
| CN101182410B CN101182410B (en) | 2011-02-02 |
Family
ID=39447837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101868469A Expired - Fee Related CN101182410B (en) | 2007-11-22 | 2007-11-22 | Oil field inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101182410B (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010706A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | Low-speed corrosion inhibitor |
| CN101699268B (en) * | 2009-11-04 | 2012-01-11 | 中国石油天然气股份有限公司 | Rapid judgment of sodium bicarbonate water type oil well corrosion and corrosion inhibitor |
| CN101624518B (en) * | 2009-08-19 | 2012-01-18 | 大庆油田有限责任公司 | Inhibitor suitable for corrosion prevention of pitshaft of CO2 driving extraction shaft |
| CN101613598B (en) * | 2009-07-29 | 2012-02-01 | 中国石油化工集团公司 | Inhibitor restraining H2S/CO2 corrosion and preparation method thereof |
| CN102533237A (en) * | 2012-01-12 | 2012-07-04 | 广州市振科科技有限公司 | Preparation method of novel organic amine adsorbed film type corrosion inhibitor for oil field |
| CN102775971A (en) * | 2012-06-21 | 2012-11-14 | 天津中油渤星工程科技有限公司 | High-temperature powder retarder in oil well cement |
| CN104846379A (en) * | 2015-06-02 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Preparation method of vegetable oil acid based imidazoline carbon dioxide corrosion inhibitor |
| CN105152370A (en) * | 2015-09-09 | 2015-12-16 | 西安石油大学 | Preparation method of bis-imidazoline phosphate corrosion and scale inhibitor |
| CN105237698A (en) * | 2015-11-03 | 2016-01-13 | 天津亿利科能源科技发展股份有限公司 | Corrosion inhibitor for offshore oilfield water treatment system, and preparation method thereof |
| CN105586595A (en) * | 2014-10-23 | 2016-05-18 | 中国石油化工股份有限公司 | Corrosion inhibitor and application thereof and anti-corrosion method for oil field water injection mineshaft |
| CN105647510A (en) * | 2016-04-07 | 2016-06-08 | 西南石油大学 | Retarding acidification system |
| CN105733541A (en) * | 2014-12-11 | 2016-07-06 | 中国石油化工股份有限公司 | Corrosion and scale inhibitor composition, application thereof, and oil field water injection wellbore corrosion and scale prevention method |
| CN105778885A (en) * | 2016-04-07 | 2016-07-20 | 西南石油大学 | Retardance additive and preparation method thereof |
| CN107936921A (en) * | 2016-12-28 | 2018-04-20 | 周生智 | A kind of anti-icing synthetic method for blocking up difunctional pipeline chemical addition agent of anti-corrosion |
| CN108048065A (en) * | 2017-11-14 | 2018-05-18 | 中国石油天然气股份有限公司 | Oil-gas well corrosion inhibitor and preparation method and application thereof |
| CN110724512A (en) * | 2019-11-15 | 2020-01-24 | 西安石油大学 | Composite multifunctional oil displacement agent for oil and gas fields and preparation method thereof |
| CN110791274A (en) * | 2019-11-18 | 2020-02-14 | 西安石油大学 | Salt-resistant oil displacement agent and preparation method thereof |
| CN110819330A (en) * | 2019-11-18 | 2020-02-21 | 西安石油大学 | Phosphonate type oil-gas field surfactant derived from natural oil |
| CN111154468A (en) * | 2020-01-06 | 2020-05-15 | 西南石油大学 | Selective water shutoff agent for oilfield water shutoff |
| CN113526688A (en) * | 2021-07-20 | 2021-10-22 | 国家石油天然气管网集团有限公司 | Corrosion and scale inhibitor for oil transportation station and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965090B (en) * | 2012-10-10 | 2015-07-08 | 西北大学 | Corrosion inhibitor composition |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159359C (en) * | 2001-08-30 | 2004-07-28 | 刘明华 | Organic polymer flocculant and its prepn. and application in water treatment |
| WO2003048287A1 (en) * | 2001-12-05 | 2003-06-12 | Akzo Nobel N.V. | A softening active composition |
| CN100453703C (en) * | 2005-02-07 | 2009-01-21 | 长江大学 | Inhibitor for controlling carbon dioxide corrosion and production thereof |
| US20060180794A1 (en) * | 2005-02-15 | 2006-08-17 | Goddard Richard J | Polyamine-based corrosion inhibitors |
| CN100591803C (en) * | 2006-09-04 | 2010-02-24 | 中国石油集团川庆钻探工程有限公司 | anti-H2S and CO2Corrosion inhibitor under combined action |
| CN101190896B (en) * | 2006-12-01 | 2012-01-11 | 湖南科技大学 | Method for preparing naphthenic acid imidazolines and betaine of amide thereof, and application of the same in HCl-H2S-H2O system |
| CN101012090A (en) * | 2006-12-22 | 2007-08-08 | 张煜 | Barium-strontium antisludging agent |
-
2007
- 2007-11-22 CN CN2007101868469A patent/CN101182410B/en not_active Expired - Fee Related
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613598B (en) * | 2009-07-29 | 2012-02-01 | 中国石油化工集团公司 | Inhibitor restraining H2S/CO2 corrosion and preparation method thereof |
| CN101624518B (en) * | 2009-08-19 | 2012-01-18 | 大庆油田有限责任公司 | Inhibitor suitable for corrosion prevention of pitshaft of CO2 driving extraction shaft |
| CN101699268B (en) * | 2009-11-04 | 2012-01-11 | 中国石油天然气股份有限公司 | Rapid judgment of sodium bicarbonate water type oil well corrosion and corrosion inhibitor |
| CN102010706B (en) * | 2010-08-12 | 2013-06-05 | 天津市天诚化工有限公司 | Low-speed corrosion inhibitor |
| CN102010706A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | Low-speed corrosion inhibitor |
| CN102533237A (en) * | 2012-01-12 | 2012-07-04 | 广州市振科科技有限公司 | Preparation method of novel organic amine adsorbed film type corrosion inhibitor for oil field |
| CN102533237B (en) * | 2012-01-12 | 2014-04-30 | 广州市振科科技有限公司 | Preparation method of novel organic amine adsorbed film type corrosion inhibitor for oil field |
| CN102775971A (en) * | 2012-06-21 | 2012-11-14 | 天津中油渤星工程科技有限公司 | High-temperature powder retarder in oil well cement |
| CN105586595A (en) * | 2014-10-23 | 2016-05-18 | 中国石油化工股份有限公司 | Corrosion inhibitor and application thereof and anti-corrosion method for oil field water injection mineshaft |
| CN105586595B (en) * | 2014-10-23 | 2018-05-18 | 中国石油化工股份有限公司 | A kind of corrosion inhibiter and its application and a kind of oil-field flooding pit shaft anti-corrosion method |
| CN105733541B (en) * | 2014-12-11 | 2018-07-31 | 中国石油化工股份有限公司 | Corrosion inhibiting and descaling agent composition and its application and oil-field flooding pit shaft corrosion protection method of scale inhibition |
| CN105733541A (en) * | 2014-12-11 | 2016-07-06 | 中国石油化工股份有限公司 | Corrosion and scale inhibitor composition, application thereof, and oil field water injection wellbore corrosion and scale prevention method |
| CN104846379A (en) * | 2015-06-02 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Preparation method of vegetable oil acid based imidazoline carbon dioxide corrosion inhibitor |
| CN105152370A (en) * | 2015-09-09 | 2015-12-16 | 西安石油大学 | Preparation method of bis-imidazoline phosphate corrosion and scale inhibitor |
| CN105152370B (en) * | 2015-09-09 | 2017-08-25 | 西安石油大学 | A kind of preparation method of bi-imidazoline phosphonate corrosion inhibiting and descaling agent |
| CN105237698A (en) * | 2015-11-03 | 2016-01-13 | 天津亿利科能源科技发展股份有限公司 | Corrosion inhibitor for offshore oilfield water treatment system, and preparation method thereof |
| CN105237698B (en) * | 2015-11-03 | 2017-11-17 | 天津亿利科能源科技发展股份有限公司 | Offshore oilfield water treatment system corrosion inhibiter and preparation method thereof |
| CN105778885A (en) * | 2016-04-07 | 2016-07-20 | 西南石油大学 | Retardance additive and preparation method thereof |
| CN105647510A (en) * | 2016-04-07 | 2016-06-08 | 西南石油大学 | Retarding acidification system |
| CN107936921A (en) * | 2016-12-28 | 2018-04-20 | 周生智 | A kind of anti-icing synthetic method for blocking up difunctional pipeline chemical addition agent of anti-corrosion |
| CN108048065A (en) * | 2017-11-14 | 2018-05-18 | 中国石油天然气股份有限公司 | Oil-gas well corrosion inhibitor and preparation method and application thereof |
| CN110724512A (en) * | 2019-11-15 | 2020-01-24 | 西安石油大学 | Composite multifunctional oil displacement agent for oil and gas fields and preparation method thereof |
| CN110724512B (en) * | 2019-11-15 | 2022-05-10 | 西安石油大学 | Composite multifunctional oil displacement agent for oil and gas fields and preparation method thereof |
| CN110791274A (en) * | 2019-11-18 | 2020-02-14 | 西安石油大学 | Salt-resistant oil displacement agent and preparation method thereof |
| CN110819330A (en) * | 2019-11-18 | 2020-02-21 | 西安石油大学 | Phosphonate type oil-gas field surfactant derived from natural oil |
| CN110819330B (en) * | 2019-11-18 | 2022-05-10 | 西安石油大学 | Phosphonate type oil-gas field surfactant derived from natural oil |
| CN111154468A (en) * | 2020-01-06 | 2020-05-15 | 西南石油大学 | Selective water shutoff agent for oilfield water shutoff |
| CN113526688A (en) * | 2021-07-20 | 2021-10-22 | 国家石油天然气管网集团有限公司 | Corrosion and scale inhibitor for oil transportation station and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101182410B (en) | 2011-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101182410B (en) | Oil field inhibitor | |
| JP5414534B2 (en) | How to control corrosion | |
| CN102198982B (en) | Scale and corrosion inhibitor for circulating cooling water | |
| CA2592447A1 (en) | Polymeric quaternary ammonium salts useful as corrosion inhibitors and biocides | |
| CN103043807B (en) | Barium strontium sulfate scale inhibitor for oil field and application thereof | |
| CN110615542B (en) | Fluorescent tracing type gas-liquid double-phase corrosion and scale inhibitor and preparation method thereof | |
| CN103254228B (en) | Preparation method and application of dendritic polymer ethanediamine nuclear polyamide octo-methanephosphonic acid | |
| CN104629700B (en) | A kind of sulfur elimination for being used to produce water oil well and water-producing gas well | |
| CN104650838A (en) | Salt-tolerant corrosion and scale inhibitor for underground oil and gas well and preparation method thereof | |
| US20130175477A1 (en) | Corrosion inhibitor for high temperature environments | |
| CN102965090A (en) | Corrosion inhibitor composition | |
| TW201026899A (en) | Composition and method for reducing white rust corrosion in industrial water systems | |
| CN101818350A (en) | Anti-oil well metal equipment corrosion inhibitor, preparation method and using method thereof | |
| CN102234502A (en) | Corrosion inhibitor and preparation method | |
| CN102259988A (en) | Multifunctional water treatment agent for oilfield reinjection water | |
| CN111219168A (en) | Solid corrosion-inhibiting antiscaling agent and its processing method | |
| CN102382682B (en) | Hydrogenation scale and corrosion inhibitor and application of scale and corrosion inhibitor | |
| CN100560801C (en) | Water-soluble high-temperature organic acid corrosion inhibitor and preparation method and use method thereof | |
| CN102888246B (en) | Corrosion-inhibition anti-coking agent for furfural refining device | |
| CN101607764B (en) | Phosphate-free corrosion inhibition antisludging agent and preparation method thereof | |
| CN1970460A (en) | Reverse osmosis membrane anti-scaling agent and its preparation method | |
| Nikitin et al. | New α-aminophosphonates as corrosion inhibitors for oil and gas pipelines protection | |
| CN104513204B (en) | It is a kind of to contain three key bi-imidazoline class compounds and the preparation method containing three key bi-imidazoline class carbon dioxide corrosion inhibitors and carbon dioxide corrosion inhibitor | |
| RU2604151C1 (en) | Method of producing corrosion inhibitor for ferrous metals for protection of oil field equipment | |
| CN102502976A (en) | High-efficiency scale inhibition and dispersion bactericide and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20131122 |