CN103014715B - Corrosion inhibitor composition for preventing hydrogen sulfide corrosion - Google Patents
Corrosion inhibitor composition for preventing hydrogen sulfide corrosion Download PDFInfo
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- CN103014715B CN103014715B CN201210281591.5A CN201210281591A CN103014715B CN 103014715 B CN103014715 B CN 103014715B CN 201210281591 A CN201210281591 A CN 201210281591A CN 103014715 B CN103014715 B CN 103014715B
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Abstract
The invention discloses a corrosion inhibitor composition for preventing hydrogen sulfide corrosion, which is characterized by comprising the following components in mass ratio: 1-5 parts of sodium molybdate, 15-30 parts of ethanol, 20-40 parts of imidazoline derivative, 5-30 parts of alkynol derivative and 1-5 parts of octanol. The corrosion inhibitor composition has the property of preventing hydrogen sulfide corrosion suitable for deep oil wells at high temperature, and the corrosion inhibition efficiency on N80 steel is 80-98%.
Description
Technical field
The invention belongs to inhibiter field, relate to a kind of composite corrosion inhibitor of hydrogen sulfide corrosion resistant.
Background technology
Along with going deep into of oil-field development, hydrogen sulfide corrosion increases the weight of gradually, has directly threatened the safety and stability in oil field to produce, and meanwhile, the hydrogen sulfide discharging is again highly toxic substance, directly threatens people's healthy and life security.See that from field condition working district is due to multiple H 2 S-containing gas, oil pipe bar seriously corroded, because corrosion causes rod parting well workover to account for the more than 30% of minor repair well number.From on-the-spot corrosion condition, beam hanger corrosion main manifestations is two kinds: tubercular corrosion and long groove shape corrosion.Tubercular corrosion is mainly the local corrosion that hydrogen sulfide causes, and the corrosion of groove shape is mainly that sucker rod partial wear rear surface protective layer is destroyed, forms weak link at eccentric wear position, thereby forms the corrosion of long groove shape.Through divide result to show to the water quality of 16 mouthfuls of sewage from oil-well of northwest block, all water pH values, between 6-7, are slightly acid, and temperature, between 15～30 DEG C, shows to be rich in water microorganism, and is conducive to microbial reproduction; Water quality has hydrogen sulfide odor, shows water quality sulfide hydrogen.Corrosion product is mainly the sulfide of iron, and hydrogen sulfide and power interact, thereby has aggravated the corrosion of downhole pipeline, especially outstanding with spot corrosion.Therefore developing a kind of material and the method that can effectively control hydrogen sulfide corrosion or weaken hydrogen sulfide corrosion, is very important to oilfield safety, stably manufactured.Inhibiter is that the one of control hydrogen sulfide corrosion is easy, economy, and effectively one of important substance and method, the inhibition efficiency of inhibiter and steel kind, corrosive environment, the temperature on stratum has close relationship.The general oil well of western oil field turns well depth and has all exceeded 5000m, underground environment complexity, and temperature is higher, all adopts highly containing Cr, Ni, Mo steel, and currently used inhibiter, is difficult to adapt to the situation in oil field, is difficult to obtain satisfied effect.Therefore, need to develop 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 the deficiency for overcoming existing inhibiter, solve western oil field hydrogen sulfide corrosion problem, in the work-ing life of Yanchang Oilfield equipment, ensure safety, the stably manufactured in oil field, and a kind of composite corrosion inhibitor of hydrogen sulfide corrosion of applicable oil field deep well is provided.
In order to realize above-mentioned target, the present invention's taked technical scheme of dealing with problems is:
A composite corrosion inhibitor for hydrogen sulfide corrosion resistant, by Sodium orthomolybdate, ethanol, imidazolidine derivatives, propargyl alcohol derivative and octanol composition, the quality of its component than content range is:
Imidazolidine derivatives described above refers to that its molecular structure is:
Wherein: R1 is the alkyl of 1-6 atom, R2 is the alkyl of 1-6 atom; It derives from the by product of pharmaceutical intermediate;
The molecular structure of described propargyl alcohol derivative is:
Wherein: R is the alkyl of 1-8 carbon atom.Its product derives from: being first naphthenic acid and quadrol cyclization, is the reaction product of chlorine band alkynol and naphthenic acid and diamines secondarily, and the product that nucleophilic substitution reaction obtains occurs.
Preparation method of the present invention is: after according to proportioning, each component directly being joined in reactor and dissolving, stir, and packaging.
When use, be 100mg/L according to concentration, directly join in the environment that uses hardware.
The present invention compares with existing inhibiter, the advantage having and beneficial effect mainly:
There is the hydrogen sulfide corrosion resistance energy in applicable oil field deep well high temperature; To N80 steel inhibition efficiency 80%～98%.
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 packaging.
Three, embodiment effect: N80 steel inhibition efficiency is 80%.
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 85%.
Embodiment 3:
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 98%.
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 97%.
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 95%.
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 93%.
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 91%.
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 hydrogen sulfide corrosion resistant, is characterized in that by Sodium orthomolybdate, ethanol, and imidazolidine derivatives, propargyl alcohol derivative and octanol composition, the quality of its component than content range is:
Described imidazolidine derivatives refers to that its molecular structure is:
Wherein: R1 is the alkyl of 1-6 atom, R2 is the alkyl of 1-6 atom;
The molecular structure of described propargyl alcohol derivative is:
Wherein: R is the alkyl of 1-8 carbon atom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210281591.5A CN103014715B (en) | 2012-08-09 | 2012-08-09 | Corrosion inhibitor composition for preventing hydrogen sulfide corrosion |
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| CN201210281591.5A CN103014715B (en) | 2012-08-09 | 2012-08-09 | Corrosion inhibitor composition for preventing hydrogen sulfide corrosion |
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| CN103014715A CN103014715A (en) | 2013-04-03 |
| CN103014715B true CN103014715B (en) | 2014-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3227470A4 (en) * | 2014-12-05 | 2018-12-19 | Services Petroliers Schlumberger | Corrosion inhibition |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409129B (en) * | 2013-08-09 | 2016-04-27 | 上海富茵环保科技有限公司 | A kind of organic amine drilling well acidification corrosion inhibitor and preparation method thereof |
| CN103409122B (en) * | 2013-08-28 | 2015-09-23 | 中国石油集团川庆钻探工程有限公司 | Water-soluble corrosion inhibitor for resisting hydrogen sulfide |
| CN103865506B (en) * | 2014-02-27 | 2017-01-11 | 山东泰和水处理科技股份有限公司 | High-temperature acidizing corrosion inhibitor for oil-gas fields and preparation method thereof |
| GB2543498A (en) | 2015-10-19 | 2017-04-26 | Schlumberger Holdings | Corrosion inhibition |
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| US5415805A (en) * | 1994-02-25 | 1995-05-16 | Betz Laboratories, Inc. | Corrosion inhibitor composition and method of use |
| WO2007002558A1 (en) * | 2005-06-24 | 2007-01-04 | Honeywell International Inc. | Method for inhibiting corrosion in brazed metal surfaces and coolants and additives for use therein |
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2012
- 2012-08-09 CN CN201210281591.5A patent/CN103014715B/en not_active Expired - Fee Related
Patent Citations (4)
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| US5415805A (en) * | 1994-02-25 | 1995-05-16 | Betz Laboratories, Inc. | Corrosion inhibitor composition and method of use |
| WO2007002558A1 (en) * | 2005-06-24 | 2007-01-04 | Honeywell International Inc. | Method for inhibiting corrosion in brazed metal surfaces and coolants and additives for use therein |
| CN102031526A (en) * | 2010-11-10 | 2011-04-27 | 中国海洋石油总公司 | Low-temperature acidification corrosion inhibitor and preparation method thereof |
| 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 two-phase corrosion inhibitor for gas well and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3227470A4 (en) * | 2014-12-05 | 2018-12-19 | Services Petroliers Schlumberger | Corrosion inhibition |
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