CN103556156A - Corrosion inhibitor for high-carbon-dioxide and high-hydrogen sulfide oilfield and preparation method thereof - Google Patents
Corrosion inhibitor for high-carbon-dioxide and high-hydrogen sulfide oilfield and preparation method thereof Download PDFInfo
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- CN103556156A CN103556156A CN201310589375.1A CN201310589375A CN103556156A CN 103556156 A CN103556156 A CN 103556156A CN 201310589375 A CN201310589375 A CN 201310589375A CN 103556156 A CN103556156 A CN 103556156A
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- inhibiter
- hydrogen sulfide
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Abstract
The invention relates to a corrosion inhibitor for a high-carbon-dioxide and high-hydrogen sulfide oilfield and a preparation method thereof and belongs to the technical field of petroleum wastewater treatment. The corrosion inhibitor for the high-carbon-dioxide and high-hydrogen sulfide oilfield comprises the following components in percentage by mass: 10 to 30% of salifying imidazoline intermediate, 0.1 to 15% of ethidene diamine, 20 to 30% of ammonium hydroxide and 30 to 69% of water. The preparation method comprises the following steps of: (1) preparing a salified imidazoline intermediate, namely, adding palmitic acid and triethylene tetramine to a xylene solvent, heating to 150 to 170 DEG C for reflux; adding benzyl chloride after water is separated out from a water segregator, and heating to 180 to 210 DEG C and holding for 4-10 hours to obtain a non-salified salified imidazoline intermediate, and evaporating out excessive solvent to obtain the salified imidazoline intermediate; and (2) preparing the corrosion inhibitor for the oilfield, namely, completely dissolving the salified imidazoline intermediate and ethidene diamine by using ammonium hydroxide, adding ethyl alcohol completely while agitating, and finally diluting with water. The corrosion inhibitor is simple in a prescription, low in cost, convenient to process, wide in applicable scope, high in slow-release efficiency and good in slow-release effect and the raw materials are easily available.
Description
Technical field
The invention belongs to the Treatment Techniques of Petroleum Wastewater field, particularly relate to inhibiter and preparation method thereof for a kind of high carbon dioxide high hydrogen sulfide oil field.
Background technology
Corrosion refers to destruction or the denaturalization phenomenon that material causes under the effect of its surrounding environment medium.The loss that corrosion causes to the mankind is surprising, and industrial gas oil is the department that is subject to corrosion harmfulness the most serious.The oil-gas field of China is distributed in saline and alkaline marshy terrain and ocean mostly, in having, strong, strong even especially corrodibility, very serious to various pipes, corrosion buried, maritime facilities, add Chinese most oil-gas field and entered middle and high Water-cut Period, the water ratio of Produced Liquid is generally more than 70%～90%, and very serious to the corrosion of all kinds of facilities, erosion rate is up to 1.5～3mm/a.The domestic oil-gas field of now having developed contains hydrogen sulfide to some extent, and some content is high.As Sichuan Petroleum Administration's sulfide hydrogen gas field accounts for, develop 78.6% of gas field, wherein Wolonghe gas field hydrogen sulfide content is up to 10%(volume ratio), gas field, the Zhao Lan village, North China Oilfield Shanxi county, hydrogen sulfide content is up to 92%.Abroad, American South Texas gas field content is up to 98%, the equal sulfur-bearing of the oil-gas field of USSR (Union of Soviet Socialist Republics) 70%.When not taking measures, hydrogen sulfide and carbonic acid cause serious corrosion failure to hardware, subsurface tool etc.
At present, corrosion control technology can be classified as three classes: corrosion resistant material, filling inhibiter, inside coating or lining.Practice at home and abroad experience shows, in above-mentioned three class methods, filling inhibiter is economic and reliable, process for corrosion control very flexibly again, thereby is most widely used in oil-gas field.Existing composite corrosion inhibitor existence formula is complicated, raw material is not easy to obtain, preparation cost is high, the technical problems such as inhibiter weak effect.
Summary of the invention
The present invention provides inhibiter and preparation method thereof for a kind of high carbon dioxide high hydrogen sulfide oil field for solving the technical problem existing in known technology.
The invention provides a kind of amidoimidazole quinoline class composite inhibiter that is applicable to high carbon dioxide hydrogen sulfide oil field, to slow down the corrosion to pipeline and equipment in oil production, transportation and the course of processing.
The high carbon dioxide high hydrogen sulfide oil field inhibiter of the features such as it is simple that one of object of the present invention is to provide a kind of formula, and raw material is easy to get, with low cost, applied widely, and slowly-releasing efficiency is high, and corrosion mitigating effect is good.
The technical scheme that take with inhibiter in high carbon dioxide high hydrogen sulfide of the present invention oil field is:
A high hydrogen sulfide oil field inhibiter, is characterized in: inhibiter comprises following component, and the mass percent of each component is counted:
Salify tetrahydroglyoxaline intermediate 10%-30%
Quadrol 0.1%-15%
Ammoniacal liquor 20%-30%
Water 30%-69%.
High carbon dioxide high hydrogen sulfide of the present invention oil field can also adopt following technical scheme with inhibiter:
Described high carbon dioxide high hydrogen sulfide oil field inhibiter, is characterized in: the mass percent of each component of inhibiter is counted:
Two of object of the present invention is to provide the preparation method of inhibiter for a kind of high carbon dioxide high hydrogen sulfide oil field of the features such as to have technique simple, easy to process, and raw material is easy to get, with low cost, and application range of products is extensive, and slowly-releasing efficiency is high, and corrosion mitigating effect is good.
High carbon dioxide high hydrogen sulfide of the present invention oil field by the technical scheme that the preparation method of inhibiter takes is:
A preparation method for inhibiter for high carbon dioxide high hydrogen sulfide oil field, is characterized in: the preparation method of inhibiter comprises following technological process:
(1) produce salify tetrahydroglyoxaline intermediate
Adopt palmitinic acid and triethylene tetramine that mol ratio is 1:0.5-0.6, add xylene solvent, temperature rises to 150-170 ℃ and starts to reflux; After having moisture to go out in water trap, add Benzyl Chloride, temperature progressively rises to 4h-10h under 180-210 ℃ of condition and obtains the not tetrahydroglyoxaline intermediate of salify, after a minute volume of water reaches theoretical minute water number, finishes reaction, evaporate unnecessary solvent, obtain salify tetrahydroglyoxaline intermediate;
(2) preparation oil field inhibiter
First with ammoniacal liquor, salify tetrahydroglyoxaline intermediate and quadrol are dissolved completely, then stir, under agitation condition, add ethanol, after dissolving completely, add water dilution, obtain required high carbon dioxide high hydrogen sulfide oil field inhibiter.
High carbon dioxide high hydrogen sulfide of the present invention oil field can also adopt following technical scheme by the preparation method of inhibiter:
The preparation method of inhibiter for described high carbon dioxide high hydrogen sulfide oil field, is characterized in:
While producing salify tetrahydroglyoxaline intermediate, the mole number that adds xylene solvent is 1.8-2.2 times of triethylene tetramine mole number, the mole number that adds Benzyl Chloride is 0.5-1 times of triethylene tetramine mole number, adopts rotatory evaporator to evaporate unnecessary solvent and obtains salify tetrahydroglyoxaline intermediate.
Advantage and positively effect that the present invention has are:
High carbon dioxide high hydrogen sulfide oil field is with inhibiter and preparation method thereof owing to having adopted the brand-new technical scheme of the present invention, and compared with prior art, the present invention has following characteristics:
1, applied widely, pH value scope is 5.4～9.0, and temperature range is 20～95 ℃, and each component has good synergy, has good corrosion mitigating effect, and slowly-releasing efficiency reaches 93.80%.
2, the present invention's inhibiter consumption used is few, and cost is low, fills a prescription simpler, and raw material is easy to get.
3, product application of the present invention can slow down the corrosion to pipeline and equipment in oil production, transportation and the course of processing.
Embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples and be described in detail as follows:
The present invention is the corrosion of certain oil field mining liquid of simulation to pipeline in experiment, join corrosion simulation liquid main component be: the iron ions of sodium ion (18000mg/L), calcium ion (1100mg/L), magnesium ion (220mg/L), bicarbonate radical (1500mg/L), chlorion (21000mg/L) and trace etc. are to carry out respectively static normal pressure corrosion test and dynamic high-pressure corrosion test under the condition of 80 ℃ in temperature.It is 0.8MPa to pressure that dynamic high-pressure corrosion test mesohigh still passes into carbonic acid gas, and concentration of hydrogen sulfide is no less than 20000mg/L, and velocity of medium is 1.6m/s.
Embodiment 1
A kind of high carbon dioxide high hydrogen sulfide oil field is with composite corrosion inhibitor formula following (mass percent):
Static experiment temperature is 80 ℃, inhibiting solution immersion corrosion lacing film 7d, and corrosion mitigating effect is as following table:
The different adding consistency slowly-releasing of table 1 efficiency
Embodiment 2
A kind of high carbon dioxide high hydrogen sulfide oil field is with composite corrosion inhibitor formula following (mass percent):
Static experiment temperature is 80 ℃, inhibiting solution immersion corrosion lacing film 7d, and corrosion mitigating effect is as following table:
The different adding consistency slowly-releasing of table 2 efficiency
Embodiment 3
A kind of high carbon dioxide high hydrogen sulfide oil field is with composite corrosion inhibitor formula following (mass percent):
Static experiment temperature is 80 ℃, inhibiting solution immersion corrosion lacing film 7d, and corrosion mitigating effect is as following table:
The different adding consistency slowly-releasing of table 3 efficiency
Embodiment 4
A kind of high carbon dioxide high hydrogen sulfide oil field is with composite corrosion inhibitor formula following (mass percent):
Static experiment temperature is 80 ℃, inhibiting solution immersion corrosion lacing film 7d, and corrosion mitigating effect is as following table:
The different adding consistency slowly-releasing of table 4 efficiency
Embodiment 5
A preparation method for inhibiter for high carbon dioxide high hydrogen sulfide oil field, comprises following technological process:
1. produce salify tetrahydroglyoxaline intermediate
Adopt palmitinic acid and triethylene tetramine that mol ratio is 1:0.55, the dimethylbenzene of take adds there-necked flask as solvent, and the mole number of xylene solvent is 2 times of triethylene tetramine mole number, and temperature rises to 160 ℃ and starts to reflux; After having moisture to go out in water trap, adding mole number is the Benzyl Chloride of 0.8 times of triethylene tetramine mole number, and temperature progressively rises to 8h at 180-210 ℃ and obtains the not tetrahydroglyoxaline intermediate of salify, after a minute volume of water reaches theoretical minute water number, finishes reaction.With rotatory evaporator, evaporate unnecessary solvent, thereby obtain salify tetrahydroglyoxaline intermediate.
2. prepare oil field inhibiter
First with ammoniacal liquor, salify tetrahydroglyoxaline intermediate and quadrol are dissolved completely, then stir, under agitation condition, add ethanol, after dissolving completely, add water dilution, obtain required high carbon dioxide high hydrogen sulfide oil field inhibiter.
Claims (4)
1. a high carbon dioxide high hydrogen sulfide oil field inhibiter, is characterized in that: inhibiter comprises following component, and the mass percent of each component is counted:
Salify tetrahydroglyoxaline intermediate 10%-30%
Quadrol 0.1%-15%
Ammoniacal liquor 20%-30%
Water 30%-69%.
2. high carbon dioxide high hydrogen sulfide according to claim 1 oil field inhibiter, is characterized in that: the mass percent of each component of inhibiter is counted:
3. the preparation method of inhibiter for high carbon dioxide high hydrogen sulfide according to claim 1 and 2 oil field, is characterized in that: the preparation method of inhibiter comprises following technological process:
(1) produce salify tetrahydroglyoxaline intermediate
Adopt palmitinic acid and triethylene tetramine that mol ratio is 1:0.5-0.6, add xylene solvent, temperature rises to 150-170 ℃ and starts to reflux; After having moisture to go out in water trap, add Benzyl Chloride, temperature progressively rises to 4h-10h under 180-210 ℃ of condition and obtains the not tetrahydroglyoxaline intermediate of salify, after a minute volume of water reaches theoretical minute water number, finishes reaction, evaporate unnecessary solvent, obtain salify tetrahydroglyoxaline intermediate;
(2) preparation oil field inhibiter
First with ammoniacal liquor, salify tetrahydroglyoxaline intermediate and quadrol are dissolved completely, then stir, under agitation condition, add ethanol, after dissolving completely, add water dilution, obtain required high carbon dioxide high hydrogen sulfide oil field inhibiter.
4. the preparation method of inhibiter for high carbon dioxide high hydrogen sulfide according to claim 3 oil field, it is characterized in that: while producing salify tetrahydroglyoxaline intermediate, the mole number that adds xylene solvent is 1.8-2.2 times of triethylene tetramine mole number, the mole number that adds Benzyl Chloride is 0.5-1 times of triethylene tetramine mole number, adopts rotatory evaporator to evaporate unnecessary solvent and obtains salify tetrahydroglyoxaline intermediate.
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| CN201310589375.1A CN103556156A (en) | 2013-11-20 | 2013-11-20 | Corrosion inhibitor for high-carbon-dioxide and high-hydrogen sulfide oilfield and preparation method thereof |
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| CN201310589375.1A CN103556156A (en) | 2013-11-20 | 2013-11-20 | Corrosion inhibitor for high-carbon-dioxide and high-hydrogen sulfide oilfield and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2031092A2 (en) * | 2007-08-31 | 2009-03-04 | Clariant International Ltd. | Corrosion inhibitors containing amphoteric tensides |
| CN101565608A (en) * | 2009-05-25 | 2009-10-28 | 新疆大学 | Preparation method of novel acidified corrosion inhibitor and use thereof |
| CN101705112A (en) * | 2009-11-12 | 2010-05-12 | 沈阳工业大学 | Water-soluble imidazoline amide corrosion inhibitor, preparation method thereof and using method thereof |
| CN101838811A (en) * | 2009-03-20 | 2010-09-22 | 杨江 | New special corrosion inhibitor for oil production |
| CN103012271A (en) * | 2012-10-30 | 2013-04-03 | 陕西启源科技发展有限责任公司 | Imidazoline type corrosion inhibitor and preparation method of corrosion inhibition system |
-
2013
- 2013-11-20 CN CN201310589375.1A patent/CN103556156A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2031092A2 (en) * | 2007-08-31 | 2009-03-04 | Clariant International Ltd. | Corrosion inhibitors containing amphoteric tensides |
| CN101838811A (en) * | 2009-03-20 | 2010-09-22 | 杨江 | New special corrosion inhibitor for oil production |
| CN101565608A (en) * | 2009-05-25 | 2009-10-28 | 新疆大学 | Preparation method of novel acidified corrosion inhibitor and use thereof |
| CN101705112A (en) * | 2009-11-12 | 2010-05-12 | 沈阳工业大学 | Water-soluble imidazoline amide corrosion inhibitor, preparation method thereof and using method thereof |
| CN103012271A (en) * | 2012-10-30 | 2013-04-03 | 陕西启源科技发展有限责任公司 | Imidazoline type corrosion inhibitor and preparation method of corrosion inhibition system |
Non-Patent Citations (1)
| Title |
|---|
| 刘明华: "《水处理化学品》", 31 January 2010, article "有机缓蚀剂" * |
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Application publication date: 20140205 |