CN103468238A - Preparation method and application of novel high-efficient acidification corrosion inhibitor - Google Patents
Preparation method and application of novel high-efficient acidification corrosion inhibitor Download PDFInfo
- Publication number
- CN103468238A CN103468238A CN2013104192773A CN201310419277A CN103468238A CN 103468238 A CN103468238 A CN 103468238A CN 2013104192773 A CN2013104192773 A CN 2013104192773A CN 201310419277 A CN201310419277 A CN 201310419277A CN 103468238 A CN103468238 A CN 103468238A
- Authority
- CN
- China
- Prior art keywords
- corrosion inhibitor
- preparation
- quinoline
- new
- acidification 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.)
- Pending
Links
Images
Abstract
The invention relates to a preparation method and application of a novel high-efficient acidification corrosion inhibitor. The preparation method of the novel high-efficient acidification corrosion inhibitor is characterized by comprising the following steps: 1) synthesizing a benzyl brominated quinoline compound; and 2) diluting the benzyl brominated quinoline compound by using a solvent to the concentration of 8-15% by mass. The corrosion inhibition effect of the corrosion inhibitor disclosed by the invention is obviously better than that of a conventional acidification corrosion inhibitor at the same temperature and the same concentration of the corrosion inhibitor; the corrosion inhibitor is transparent and clear after mixing with an acid solution, has no phenomena of stratification, turbidity and the like after 48 hours and can achieve the first-level index requirements of a standard in the petroleum industry; the corrosion rate of a P110 steel test piece in 15% (by mass) of an acid solution is far lower than the requirements of first-level corrosion inhibitor product indexes at the temperature of 90 DEG C of the standard'SY/T5405-1996' in the petroleum industry.
Description
Technical field
The present invention relates to a kind of preparation method and application thereof of new and effective acidification corrosion inhibitor, belong to the metal corrosion and protection technical field.
Background technology
Current domestic most oil-gas fields all need to rely on acidification technique to process stratum, to improve the recovery ratio of Oil/gas Well, realize volume increase and the stable yields of Oil/gas Well.Acidification of oil gas well technique refers to acid solution is injected into stratum from ground by mechanical means, acid solution is by the corrosion to rock, the substance dissolves of stopping up gas channel is removed, formation pore and crack are enlarged unimpeded, reduce the resistance to flow of oil gas, thereby realized improving the purpose of the rate of oil and gas recovery.But because the injection of acid solution can cause the heavy corrosion of down-hole metal pipe material, thereby can cause underground equipment that sudden break accident occurs, can be damaged stratum again by the metallic iron ion of sour corrosion, have a strong impact on the normal production of oil gas simultaneously.Therefore, in the acidification technique construction, must add acidification corrosion inhibitor to stop the corrosion of acid solution to down-hole string, remove formation damage, thereby the well stimulation of assurance acid stimulation be implemented smoothly.
Acidification corrosion inhibitor is a kind ofly with suitable concentration and form, to be present in the acidifying medium, prevents the mixture with chemical substance or several chemical substances of slowing down corrosion.Domestic Oil And Gas Fields acidification corrosion inhibitor commonly used mainly contains following a few class at present: (1) aldehyde ketone amine condenses class.The type inhibiter has when synthetic aldehyde to participate in, and while therefore using in the acid fluid system such as the acid that becomes sticky, frozen glue acid, very easily impels acid solution crosslinked in advance, causes producing floss and precipitation in acid solution, has had a strong impact on its result of use; (2) hydrocarbon imidazolines.The heat resistance of the type inhibiter is poor, and the shortcomings such as synthesis technique complexity, can not be applied in the acidizing treatment of high temperature deep well formula as disclosed as patent No. CN101565608.
Summary of the invention
The objective of the invention is the deficiency existed for solving prior art, a kind of preparation method and application thereof of new and effective acidification corrosion inhibitor are provided by designing new compound molecule thinking.
The technical solution adopted in the present invention is: a kind of preparation method of new and effective acidification corrosion inhibitor is characterized in that: it comprises the steps:
1) synthesize benzyl bromination quinoline compound;
2) with solvent cut benzyl bromination quinoline compound to 8 ~ 15%, be calculated in mass percent.
The molecular formula of described benzyl bromination quinoline is:
Described step 1) benzyl bromination quinoline compound synthetic method is: get 1.0 ~ 1.3mol quinoline and 1.0 ~ 1.5mol cylite, 1.0 ~ 1.3mol quinoline is joined in 5% reaction solvent of quinoline and cylite total mass, stir, then drip 1.0 ~ 1.5mol cylite, 10 ~ 15min drips, be rapidly heated 160 ~ 190 ℃, react 3 ~ 8h, the room temperature of falling obtains benzyl bromination quinoline compound.
Described reaction solvent is methyl alcohol, dehydrated alcohol, Virahol, dimethyl sulfoxide (DMSO) or pyridine.
Described quinoline and cylite mol ratio are 1.0 ~ 1.1:1.0 ~ 1.3, and temperature of reaction is 160 ~ 180 ℃, and the reaction times is 3 ~ 5h.
In step 2) in the dilution of benzyl bromination quinoline compound, add 2 ~ 6% synergistic agent, be calculated in mass percent.
Described synergistic agent is one or more mixing in propiolic alcohol, potassiumiodide, cuprous iodide, cuprous chloride, antimonous oxide or butter of antimony.
Described preparation method, wherein step 2) described solvent is one or more mixing in methyl alcohol, dehydrated alcohol, Virahol, acetone or dimethyl formamide.
The present invention adopts above technical scheme, compared with prior art, has the following advantages:
(1) advantages such as simple, the stable in properties of reliable, the production technique of the new and effective acidification corrosion inhibitor reaction principle of the present invention, dosage be few, the corrosion mitigating effect under uniform temp and density of corrosion inhibitor obviously is better than conventional acidification corrosion inhibitor;
(2) the new and effective acidification corrosion inhibitor of the present invention is water-soluble extremely strong, and is transparent clear after acid solution is mixed, and after 48h, without phenomenons such as layering muddinesses, can reach the first class index requirement of petroleum industry standard;
(3) the new and effective acidification corrosion inhibitor of the present invention all has good corrosion mitigating effect to broad variety steel (as N80, P110, super 13Cr etc.) and multiple acid system (example hydrochloric acid, mud acid etc.);
(4) synergistic agent such as new and effective acidification corrosion inhibitor of the present invention and propiolic alcohol, potassiumiodide have good synergistic effect, add 0.5～1.0%(quality in acid solution) the new and effective acidification corrosion inhibitor of the present invention, can make the test piece of P110 steel in the 15%(quality) requirement of erosion rate in acid solution one-level corrosion inhibitor product index during far below 90 ℃ of petroleum industry standards " SY/T 5405-1996 ".
The accompanying drawing explanation
Fig. 1 is that inhibiter of the present invention is in the 15%(quality) alternating-current impedance spectrogram in hydrochloric acid soln.
Embodiment
Further illustrate inhibiter of the present invention below in conjunction with specific embodiment, but example does not limit the scope of the invention.
A kind of preparation method of new and effective acidification corrosion inhibitor, it comprises the steps:
1) synthesize benzyl bromination quinoline compound:
Benzyl bromination quinoline compound synthetic method is: get 1.0 ~ 1.3mol quinoline and 1.0 ~ 1.5mol cylite, 1.0 ~ 1.3mol quinoline is joined in 5% reaction solvent of quinoline and cylite total mass, stir, then drip 1.0 ~ 1.5mol cylite, 10 ~ 15min drips, be rapidly heated 160 ~ 190 ℃, react 3 ~ 8h, the room temperature of falling obtains benzyl bromination quinoline compound.Described reaction solvent is methyl alcohol, dehydrated alcohol, Virahol, dimethyl sulfoxide (DMSO) or pyridine.
2) with solvent cut benzyl bromination quinoline compound to 8 ~ 15%, be calculated in mass percent:
Described solvent is one or more mixing in methyl alcohol, dehydrated alcohol, Virahol, acetone or dimethyl formamide.In step 2) in the dilution of benzyl bromination quinoline compound, can also add 2 ~ 6% synergistic agent, be calculated in mass percent; Described synergistic agent is one or more mixing in propiolic alcohol, potassiumiodide, cuprous iodide, cuprous chloride, antimonous oxide or butter of antimony.
Embodiment 1
The 12.92g quinoline is joined in the 1.5g Virahol, stir, then drip the 17.11g cylite, 10 ~ 15min drips, and is rapidly heated 180 ℃, reaction 3h, and the room temperature of falling obtains benzyl bromination quinoline compound.Take out this compound of 8g and 92g methanol mixed even, obtain inhibiter of the present invention.
The molecular formula of this benzyl bromination quinoline compound is:
With reference to People's Republic of China's oil and gas industry standard " SY/T 5405-1996 " method, the inhibiter sample of embodiment 1 preparation under different concentration of hydrochloric acid to the P110 steel test piece test, etching time is 4h, corrosion temperature is 90 ℃, density of corrosion inhibitor is the 1%(quality), the results are shown in Table 1.
Erosion rate under the different concentration of hydrochloric acid of table 1
| Concentration of hydrochloric acid/%(quality) | 10 | 15 | 20 | 25 |
| Erosion rate/(gm -2·h -1） | 1.5937 | 1.8943 | 3.0102 | 7.9048 |
The 14.21g quinoline is joined in the 1.83g dehydrated alcohol, stir, then drip the 22.24g cylite, 10 ~ 15min drips, and is rapidly heated 160 ℃, reaction 5h, and the room temperature of falling obtains benzyl bromination quinoline compound.Take out this compound of 10g and mix with the 90g dehydrated alcohol, obtain inhibiter of the present invention.
The inhibiter sample of embodiment 2 preparation is in the 15%(quality) in hydrochloric acid soln to the P110 steel test piece carried out different density of corrosion inhibitor tests, corrosion temperature is 90 ℃, etching time is 4h, the results are shown in Table 2.
Erosion rate under the different density of corrosion inhibitor of table 2
| Density of corrosion inhibitor/%(quality) | 0 | 0.5 | 1.0 | 1.5 | 2.0 |
| Erosion rate/(gm -2·h -1） | 356.4852 | 1.9335 | 1.6142 | 1.3602 | 1.1394 |
Embodiment 3
The 28.42g quinoline is joined in 3.48g methyl alcohol, stir, then drip the 41.05g cylite, 10 ~ 15min drips, and is rapidly heated 160 ℃, reaction 4h, and the room temperature of falling obtains benzyl bromination quinoline compound.Take out this compound of 12g and mix with 86g methyl alcohol, 2g propiolic alcohol, obtain inhibiter of the present invention.
The inhibiter sample of embodiment 3 preparation in different acid solutions to the P110 steel test piece test, the dense 1%(quality of inhibiter), the degree corrosion temperature is 90 ℃, etching time is 3h, the results are shown in Table 3.
Erosion rate under the different acid solution types of table 3
| The acid solution type | 15%（HCl） | 12%（HCl）+3%（HF） | 20%（HCl）+3%（HAC） |
| Erosion rate/(gm -2·h -1) | 1.1148 | 1.9954 | 2.6026 |
Embodiment 4
The 64.58g quinoline is joined in the 8.36g dehydrated alcohol, stir, then drip the 102.63g cylite, 10 ~ 15min drips, and is rapidly heated 170 ℃, reaction 4h, and the room temperature of falling obtains benzyl bromination quinoline compound.Take out this compound 15g and mix successively with 8g dimethyl formamide, 71.5g methyl alcohol, 4g propiolic alcohol, 1g potassiumiodide, 0.5g cuprous chloride, obtain inhibiter of the present invention.
The inhibiter sample of embodiment 4 preparation is in the 15%(quality) unlike material is tested in hydrochloric acid soln the dense 2%(quality of inhibiter), the degree corrosion temperature is 120 ℃, etching time is 4h, the results are shown in Table 4.
Erosion rate under table 4 unlike material
| Material | P110 | N80 | Super 13Cr |
| Erosion rate/(gm -2·h -1) | 12.8392 | 28.3781 | 15.7495 |
| The inhibiter evaluation index | One-level | Secondary | One-level |
Embodiment 5
The inhibiter sample electro-chemical test of embodiment 4 preparations.
Electro-chemical test adopts the CS350 electrochemical workstation, by the tetrafluoroethylene cover of cylindrical N80 steel test piece (working electrode) embedded rings epoxy resins and polyamide resin sealing, exposes 1cm
2circular end surface, supporting electrode adopts platinum electrode, reference electrode adopts saturated calomel electrode (SEC, saturated KCl solution), the experiment test temperature is room temperature.AC impedence method adopts the logarithm frequency sweep from the high frequency to the low frequency, and swept frequency range is 10
2～10
5hz, the AC signal amplitude applied is ± 10mv to adopt ZView software to be resolved ac impedance spectroscopy.As shown in Figure 1; in the 15%(quality) in hydrochloric acid soln, along with the increase of this density of corrosion inhibitor, half circular diameter of capacitive reactance arc increases gradually; this shows that this inhibiter has formed obvious protectiveness film on N80 test piece surface, has suppressed the corrosion of test piece in acid solution effectively.
Inhibiter of the present invention can be applicable to the operations such as acidification of oil gas well, acid fracturing volume increase.
The part that the present embodiment does not describe in detail and english abbreviation belong to the common practise of the industry, can search on the net, here not narration one by one.All there is sale in related chemical reagent market.
Claims (8)
1. the preparation method of a new and effective acidification corrosion inhibitor, it is characterized in that: it comprises the steps:
1) synthesize benzyl bromination quinoline compound;
2) with solvent cut benzyl bromination quinoline compound to 8 ~ 15%, be calculated in mass percent.
2. the preparation method of a kind of new and effective acidification corrosion inhibitor according to claim 1, it is characterized in that: the molecular formula of described benzyl bromination quinoline is:
。
3. the preparation method of a kind of new and effective acidification corrosion inhibitor according to claim 1, it is characterized in that: described step 1) benzyl bromination quinoline compound synthetic method is: get 1.0 ~ 1.3mol quinoline and 1.0 ~ 1.5mol cylite, 1.0 ~ 1.3mol quinoline is joined in 5% reaction solvent of quinoline and cylite total mass, stir, then drip 1.0 ~ 1.5mol cylite, 10 ~ 15min drips, be rapidly heated 160 ~ 190 ℃, reaction 3 ~ 8h, the room temperature of falling obtains benzyl bromination quinoline compound.
4. the preparation method of a kind of new and effective acidification corrosion inhibitor according to claim 3, it is characterized in that: described reaction solvent is methyl alcohol, dehydrated alcohol, Virahol, dimethyl sulfoxide (DMSO) or pyridine.
5. the preparation method of a kind of new and effective acidification corrosion inhibitor according to claim 3, it is characterized in that: described quinoline and cylite mol ratio are 1.0 ~ 1.1:1.0 ~ 1.3, and temperature of reaction is 160 ~ 180 ℃, and the reaction times is 3 ~ 5h.
6. the preparation method of a kind of new and effective acidification corrosion inhibitor according to claim 1, is characterized in that: in step 2) in the dilution of benzyl bromination quinoline compound, add 2 ~ 6% synergistic agent, be calculated in mass percent.
7. the preparation method of a kind of new and effective acidification corrosion inhibitor according to claim 6, it is characterized in that: described synergistic agent is one or more mixing in propiolic alcohol, potassiumiodide, cuprous iodide, cuprous chloride, antimonous oxide, butter of antimony.
8. preparation method according to claim 1, wherein step 2) described solvent is one or more mixing in methyl alcohol, dehydrated alcohol, Virahol, acetone or dimethyl formamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104192773A CN103468238A (en) | 2013-09-16 | 2013-09-16 | Preparation method and application of novel high-efficient acidification corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104192773A CN103468238A (en) | 2013-09-16 | 2013-09-16 | Preparation method and application of novel high-efficient acidification corrosion inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103468238A true CN103468238A (en) | 2013-12-25 |
Family
ID=49793286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104192773A Pending CN103468238A (en) | 2013-09-16 | 2013-09-16 | Preparation method and application of novel high-efficient acidification corrosion inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103468238A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281275A (en) * | 2016-07-15 | 2017-01-04 | 扬州大学 | Corrosion and scale inhibitor for oil well |
| CN107418548A (en) * | 2017-08-29 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor |
| CN107880864A (en) * | 2016-09-30 | 2018-04-06 | 中国石油化工股份有限公司 | One kind connection ene-type acid fracturing corrosion inhibiter and preparation method thereof |
| CN108707906A (en) * | 2018-06-05 | 2018-10-26 | 中国石油天然气集团有限公司 | A kind of high temperature compound corrosion inhibitor and preparation method thereof suitable for mild steel |
| CN108753271A (en) * | 2018-07-23 | 2018-11-06 | 中石化石油工程技术服务有限公司 | A kind of acidification composite corrosion inhibitor and preparation method thereof |
| CN113337824A (en) * | 2021-05-27 | 2021-09-03 | 成都英士瑞科技有限公司 | Acidizing corrosion inhibitor for high temperature |
| CN115404065A (en) * | 2022-10-11 | 2022-11-29 | 中国科学院兰州化学物理研究所 | High-temperature-resistant acidizing corrosion inhibitor and application thereof |
| CN115612473A (en) * | 2022-10-11 | 2023-01-17 | 中国科学院兰州化学物理研究所 | High-temperature-resistant acidizing corrosion inhibitor, preparation method and application thereof, and corrosion-inhibiting acidizing fracturing fluid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117364A (en) * | 1999-05-27 | 2000-09-12 | Nalco/Exxon Energy Chemicals, L.P. | Acid corrosion inhibitor |
| CN101629072A (en) * | 2009-07-28 | 2010-01-20 | 陕西华泽实业有限公司 | Oil field acidification high temperature inhibiter and preparation method thereof |
| CN102676140A (en) * | 2012-04-26 | 2012-09-19 | 南京华洲新材料有限公司 | Nitrogenous heterocyclic quaternary ammonium salt acidizing corrosion inhibitor and preparation method thereof |
-
2013
- 2013-09-16 CN CN2013104192773A patent/CN103468238A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117364A (en) * | 1999-05-27 | 2000-09-12 | Nalco/Exxon Energy Chemicals, L.P. | Acid corrosion inhibitor |
| CN101629072A (en) * | 2009-07-28 | 2010-01-20 | 陕西华泽实业有限公司 | Oil field acidification high temperature inhibiter and preparation method thereof |
| CN102676140A (en) * | 2012-04-26 | 2012-09-19 | 南京华洲新材料有限公司 | Nitrogenous heterocyclic quaternary ammonium salt acidizing corrosion inhibitor and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 吴荫顺 等: "《电化学保护和缓蚀剂应用技术》", 31 March 2006, 化学工业出版社 * |
| 徐清 等: "γ-氯丙基三甲氧基硅烷季铵化反应中的溶剂效应研究", 《高校化学工程学报》 * |
| 李恒娟: "高温盐酸缓蚀剂合成及应用研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 柳意: "溶剂效应对基础有机化学中反应历程的影响", 《吉林省教育学院学报》 * |
| 王蓉沙等: "季铵盐复合型缓蚀剂的研制", 《油气田环境保护》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281275A (en) * | 2016-07-15 | 2017-01-04 | 扬州大学 | Corrosion and scale inhibitor for oil well |
| CN106281275B (en) * | 2016-07-15 | 2019-10-25 | 扬州大学 | Corrosion and scale inhibitor for oil well |
| CN107880864A (en) * | 2016-09-30 | 2018-04-06 | 中国石油化工股份有限公司 | One kind connection ene-type acid fracturing corrosion inhibiter and preparation method thereof |
| CN107880864B (en) * | 2016-09-30 | 2020-06-23 | 中国石油化工股份有限公司 | Diene acid fracturing corrosion inhibitor and preparation method thereof |
| CN107418548A (en) * | 2017-08-29 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor |
| CN107418548B (en) * | 2017-08-29 | 2020-07-31 | 中国石油集团渤海钻探工程有限公司 | Pyridine derivative and Mannich base composite high-temperature acidizing corrosion inhibitor |
| CN108707906A (en) * | 2018-06-05 | 2018-10-26 | 中国石油天然气集团有限公司 | A kind of high temperature compound corrosion inhibitor and preparation method thereof suitable for mild steel |
| CN108753271A (en) * | 2018-07-23 | 2018-11-06 | 中石化石油工程技术服务有限公司 | A kind of acidification composite corrosion inhibitor and preparation method thereof |
| CN113337824A (en) * | 2021-05-27 | 2021-09-03 | 成都英士瑞科技有限公司 | Acidizing corrosion inhibitor for high temperature |
| CN115404065A (en) * | 2022-10-11 | 2022-11-29 | 中国科学院兰州化学物理研究所 | High-temperature-resistant acidizing corrosion inhibitor and application thereof |
| CN115612473A (en) * | 2022-10-11 | 2023-01-17 | 中国科学院兰州化学物理研究所 | High-temperature-resistant acidizing corrosion inhibitor, preparation method and application thereof, and corrosion-inhibiting acidizing fracturing fluid |
| CN115404065B (en) * | 2022-10-11 | 2023-11-10 | 中国科学院兰州化学物理研究所 | High-temperature-resistant acidification corrosion inhibitor and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103468238A (en) | Preparation method and application of novel high-efficient acidification corrosion inhibitor | |
| CN102838781B (en) | Ultra-temperature organic zirconium crosslinker suitable for polymer crosslinking and prepared fracturing solutions of ultra-temperature organic zirconium crosslinker | |
| CN107418549B (en) | Composite acidizing corrosion inhibitor capable of resisting temperature of 120-140 DEG C | |
| Zakaria et al. | A novel polymer-assisted emulsified-acid system improves the efficiency of carbonate matrix acidizing | |
| CN100591803C (en) | Corrosion inhibitor resistant to H2S and CO2 | |
| US11795380B2 (en) | Method for anti-corrosion treating an oil well with an oil in water emulsion | |
| CN103896877B (en) | Low toxicity Mannich base compounds, acidification corrosion inhibitor prepared therefrom and preparation method thereof | |
| CN107418548A (en) | A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor | |
| CN104560005B (en) | A kind of Mannich alkaline acidification corrosion inhibitor and preparation method thereof | |
| CN103289663B (en) | A kind of preparation method of low toxicity acidification corrosion inhibitor and application thereof | |
| CN105694836A (en) | Diverting acid acidizing corrosion inhibitor and preparation method thereof | |
| CN107523287A (en) | A kind of combined high temperature acidification corrosion inhibitor based on pyridines quaternary ammonium salt | |
| CN104831286A (en) | Schiff base type acidification corrosion inhibitor, preparation method and applications thereof | |
| CN107502333A (en) | A kind of quinoline and the compound acidification corrosion inhibitor of new Mannich base | |
| CN105568292A (en) | Alkyl pyridinium quaternary ammonium salt corrosion inhibitor used for inhibiting carbon dioxide corrosion and preparation method thereof | |
| CN110283581B (en) | Acidizing corrosion inhibitor suitable for high temperature of above 160 DEG C | |
| CN108251087B (en) | Carbon dioxide flooding injection well annulus protection fluid and preparation method and use method thereof | |
| Guo et al. | Performance evaluation of high-strength polyethyleneimine gels and syneresis mechanism under high-temperature and high-salinity conditions | |
| CN107418547B (en) | High-temperature acidizing corrosion inhibitor based on tribenzyl- (2-benzyl) pyridinium ammonium chloride | |
| CN103992782A (en) | Acidizing corrosion inhibitor and preparation method thereof | |
| CN104946231A (en) | Preparation method for low-toxic corrosion inhibitor used for oil field acidification | |
| CN105238379B (en) | A kind of long-acting corrosion inhibiter of acidification of gas well and its preparation method and application method | |
| CN103289670B (en) | A kind of Polymer corrosion inhibitor and preparation method thereof | |
| CN107384362A (en) | A kind of acidification corrosion inhibitor and preparation method and application | |
| CN103881109A (en) | Titanium nano macromolecule alloy base material as well as preparation method and equipment 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131225 |