CN103014716B - Corrosion inhibitor composition for preventing hydrogen sulfide and carbon dioxide corrosion - Google Patents
Corrosion inhibitor composition for preventing hydrogen sulfide and carbon dioxide corrosion Download PDFInfo
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- CN103014716B CN103014716B CN201210281636.9A CN201210281636A CN103014716B CN 103014716 B CN103014716 B CN 103014716B CN 201210281636 A CN201210281636 A CN 201210281636A CN 103014716 B CN103014716 B CN 103014716B
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- hydrogen sulfide
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- 0 CC(C)*(*)C(*(CC(*1c2cc(C)cc(N)c2)=C)C1=O)=O Chemical compound CC(C)*(*)C(*(CC(*1c2cc(C)cc(N)c2)=C)C1=O)=O 0.000 description 1
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Abstract
The invention discloses a corrosion inhibitor composition for preventing hydrogen sulfide and carbon dioxide corrosion, which is characterized by comprising the following components in mass ratio: 1-5 parts of tween, 15-30 parts of ethanol, 20-40 parts of imidazoline derivative, 5-30 parts of alkynol derivative, 1-5 parts of octanol, 2-25 parts of sodium tungstate, and 2-33 parts of water. The corrosion inhibitor composition has the property of preventing hydrogen sulfide and carbon dioxide corrosion suitable for deep oil wells at high temperature, and the corrosion inhibition efficiency on N80 steel is more than 90%.
Description
Technical field
The invention belongs to inhibiter field, relate to the composite corrosion inhibitor of a kind of anti-H 2 S and carbon dioxide corrosion.
Background technology
Along with going deep into of oil-field development, the metallic corrosion that hydrogen sulfide corrosion and carbonic acid gas form hybrid corrosion medium increases the weight of gradually, has directly threatened the safety and stability in oil field to produce.Meanwhile, the hydrogen sulfide discharging is again highly toxic substance, directly threatens people's healthy and life security.At H
2in S and the simultaneous situation of CO2 corrosive medium, H2S, CO2 relative content has complicated impact to corrosion.Relatively generally acknowledge that rule is that: H2S is relevant with ratio and the corrosion condition of CO2 content, generally represents its ratio by its dividing potential drop.Ratio PCO when its dividing potential drop
2/ PH
2s < 20, corrosion be take H2S as main; 20≤PCO
2/ PH
2s < 500, this corrodes with CO
2and H
2s acting in conjunction is main; PCO
2/ PH
2s>=500, time corrosion be take CO2 as main.Meanwhile, the Cl in water quality
-ion plays catalyzer in the corrosion process of oil pipe, hinders the iron sulfide film of protectiveness in the formation of steel surface, and Cl
-can also cross pore or the defect of metal surface sulfurizing iron protective membrane and infiltrate film, make protective membrane that micro-cracking occur, cause pitting.Cl
-once contact with gold surface, can accelerate iron ion and dissolve, generate the FeCl of facile hydrolysis
3thereby, accelerated corrosion.
In all multi-control corrosion measures, inhibiter is most economical effective means, selects rational inhibiter.The application specific aim of inhibiter is stronger, and for different corrosive mediums and environment, the inhibiter of use is different, even same medium, when the operating parts such as temperature, pressure, concentration and flow velocity change, the inhibiter of employing also needs to change.Therefore, should first by indoor compatibleness, test, in conjunction with field evaluation, test to select inhibiter.Concrete situation for its corrosion, therefore, developing a kind of composite corrosion inhibitor that can effectively control hydrogen sulfide and carbon dioxide mix corrosion or weakening hydrogen sulfide corrosion and carbon dioxide mix corrosion, is very necessary, significant to the healthy of oilfield safety, stably manufactured and people.Inhibiter is control hydrogen sulfide and carbon dioxide corrosion a kind of easy, economy, effectively one of important substance and method.The inhibition efficiency of inhibiter and steel kind, corrosive environment, the temperature on stratum has close relationship, and the general oil well of western oil field turns well depth and has all surpassed 5000m, and underground environment is complicated, and temperature is higher, and all adopts high containing Cr, Ni, Mo steel.The inhibiter that used so far, can not adapt to the situation in oil field, is difficult to obtain satisfied effect.Therefore, the task of top priority need to be developed a kind of composite inhibiter composition with several functions to realize the object of controlling hydrogen sulfide corrosion.
Summary of the invention
The object of the invention is in order to overcome the deficiency of existing inhibiter, solve western oil field hydrogen sulfide and carbon dioxide corrosion problem, the work-ing life of Yanchang Oilfield equipment, safety, the stably manufactured in assurance oil field.A kind of anti-H 2 S of applicable oil field deep well and the composite corrosion inhibitor of carbon dioxide corrosion are provided.
To achieve these goals, the present invention's taked technical scheme of dealing with problems is:
Consider that corrosive environment is the hybrid corrosion environment of hydrogen sulfide and carbonic acid gas, meanwhile, in corrosive environment, also have chlorion to exist, so by adopting tetrahydroglyoxaline to control carbon dioxide corrosion, control hydrogen sulfide corrosion with alkynol, use sodium wolframate passivating metallic surfaces, the erosion-resistant effect of raising to chlorion, its concrete scheme is by tween, ethanol, imidazolidine derivatives, propargyl alcohol derivative, octanol, sodium wolframate and water form, and each components in mass portion content range is:
The molecular structure of imidazolidine derivatives described above is:
Wherein: R1 is the alkyl of 1-6 atom, R2 is the alkyl of 1-6 atom, and it derives from the by product of pharmaceutical industry; The molecular structure of described propargyl alcohol derivative is:
Wherein: R is the alkyl of 1-8 carbon atom, and it derives from following reaction:
Preparation method of the present invention is: after according to proportioning, each component directly being joined in reactor and dissolving, stir, and packing.
During use, according to concentration, be 100mg/L, directly join in the environment that uses hardware.
The present invention compares with existing inhibiter, the advantage having and beneficial effect mainly:
There is anti-H 2 S in applicable oil field deep well high temperature and the performance of carbon dioxide corrosion; To N80 steel inhibition efficiency more than 90%.
Embodiment
Embodiment 1
One, the composition of this composite corrosion inhibitor is in mass ratio:
Two, the preparation method of this composite corrosion inhibitor is: after each component is directly joined in reactor dissolving, stir, and packing.
Three, embodiment effect: N80 steel inhibition efficiency is 90%.
Embodiment 2
One, the composition of this composite corrosion inhibitor is in mass ratio:
Two, the preparation method of this composite corrosion inhibitor is with embodiment 1.
Three, embodiment effect: N80 steel inhibition efficiency is 91%.
Embodiment 3
The mass ratio of its component is:
Two, the preparation method of this composite corrosion inhibitor is with embodiment 1.
Three, embodiment effect: N80 steel inhibition efficiency is 95%.
Embodiment 4
One, the composition of this composite corrosion inhibitor is in mass ratio:
Two, the preparation method of this composite corrosion inhibitor is with embodiment 1.
Three, embodiment effect: N80 steel inhibition efficiency is 92%.
Embodiment 5
One, the composition of this composite corrosion inhibitor is in mass ratio:
Two, the preparation method of this composite corrosion inhibitor is with embodiment 1.
Three, embodiment effect: N80 steel inhibition efficiency is 89%.
Embodiment 6
One, the composition of this composite corrosion inhibitor is in mass ratio:
Two, the preparation method of this composite corrosion inhibitor is with embodiment 1.
Three, embodiment effect: N80 steel inhibition efficiency is 96%.
Embodiment 7
One, the composition of this composite corrosion inhibitor is in mass ratio:
Two, the preparation method of this composite corrosion inhibitor is with embodiment 1.
Three, embodiment effect: N80 steel inhibition efficiency is 97%.
Embodiment 8
One, the composition of this composite corrosion inhibitor is in mass ratio:
Two, the preparation method of this composite corrosion inhibitor is with embodiment 1.
Three, embodiment effect: N80 steel inhibition efficiency is 96%.
Embodiment of the present invention only, for technical solution of the present invention is described, is not limited to the present invention.
Claims (1)
1. a composite corrosion inhibitor for anti-H 2 S and carbonic acid gas, is characterized in that by tween, ethanol, and imidazolidine derivatives, propargyl alcohol derivative, octanol, sodium wolframate and water form, and each components in mass portion content range is:
The molecular structure of imidazolidine derivatives described above is:
Wherein: R1 is the alkyl of 1-6 atom, R2 is the alkyl of 1-6 atom, and it derives from the by product of pharmaceutical industry; The molecular structure of described propargyl alcohol derivative is:
Wherein: R is the alkyl of 1-8 carbon atom, and it derives from following reaction:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210281636.9A CN103014716B (en) | 2012-08-09 | 2012-08-09 | Corrosion inhibitor composition for preventing hydrogen sulfide and carbon dioxide corrosion |
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|---|---|---|---|
| CN201210281636.9A CN103014716B (en) | 2012-08-09 | 2012-08-09 | Corrosion inhibitor composition for preventing hydrogen sulfide and carbon dioxide corrosion |
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|---|---|
| CN103014716A CN103014716A (en) | 2013-04-03 |
| CN103014716B true CN103014716B (en) | 2014-09-10 |
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| CN201210281636.9A Expired - Fee Related CN103014716B (en) | 2012-08-09 | 2012-08-09 | Corrosion inhibitor composition for preventing hydrogen sulfide and carbon dioxide corrosion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318059B (en) * | 2019-08-09 | 2021-03-16 | 中北大学 | Compound carbon steel pickling corrosion inhibitor and application thereof |
| CN110698956A (en) * | 2019-10-17 | 2020-01-17 | 江苏科技大学 | Carbon dioxide corrosion resistant water-based coating composition and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4389371A (en) * | 1979-09-14 | 1983-06-21 | Basf Wyandotte Corporation | Process for inhibiting the corrosion of aluminum |
| CN101565241A (en) * | 2009-06-04 | 2009-10-28 | 李秀宁 | Non-phosphorus scale and corrosion inhibitor |
| CN102061157A (en) * | 2011-01-12 | 2011-05-18 | 中国石油集团川庆钻探工程有限公司 | Gas-liquid double-phase corrosion inhibitor for gas well and preparation method thereof |
| WO2011143358A2 (en) * | 2010-05-12 | 2011-11-17 | Jsk Capital Llc | Method for lowering ph using urea sulfate in the presence of corrosion inhibitor |
-
2012
- 2012-08-09 CN CN201210281636.9A patent/CN103014716B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4389371A (en) * | 1979-09-14 | 1983-06-21 | Basf Wyandotte Corporation | Process for inhibiting the corrosion of aluminum |
| CN101565241A (en) * | 2009-06-04 | 2009-10-28 | 李秀宁 | Non-phosphorus scale and corrosion inhibitor |
| WO2011143358A2 (en) * | 2010-05-12 | 2011-11-17 | Jsk Capital Llc | Method for lowering ph using urea sulfate in the presence of corrosion inhibitor |
| CN102061157A (en) * | 2011-01-12 | 2011-05-18 | 中国石油集团川庆钻探工程有限公司 | Gas-liquid double-phase corrosion inhibitor for gas well and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| "咪唑啉衍生物缓蚀剂的研制及其性能评价";王建华 等;《精细石油化工进展》;20040630;第5卷(第6期);第22-24页 * |
| "油田用水腐蚀和结垢因素与选择缓蚀剂和阻垢剂的关系";高延敏 等;《全面腐蚀控制》;20011231;第15卷(第2期);第23-25,28页 * |
| 王建华 等."咪唑啉衍生物缓蚀剂的研制及其性能评价".《精细石油化工进展》.2004,第5卷(第6期),第22-24页. |
| 高延敏 等."油田用水腐蚀和结垢因素与选择缓蚀剂和阻垢剂的关系".《全面腐蚀控制》.2001,第15卷(第2期),第23-25,28页. |
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