CN101607767A - A kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water - Google Patents
A kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water Download PDFInfo
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- CN101607767A CN101607767A CNA2009101133635A CN200910113363A CN101607767A CN 101607767 A CN101607767 A CN 101607767A CN A2009101133635 A CNA2009101133635 A CN A2009101133635A CN 200910113363 A CN200910113363 A CN 200910113363A CN 101607767 A CN101607767 A CN 101607767A
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Abstract
The invention provides a kind of neutral composite scale inhibitor that is used for oil field reinjection water, batching adds by weight; With self-made inhibitor 18-20 part, Amino Trimethylene Phosphonic Acid 25-30 part, vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer 8-10 part, pure water 20-22 part is dropped into reactor, stirs 20～35 ℃ of temperature controls 30～60 minutes; In 30-45 minute, slowly add 14-16 part potassium hydroxide, when temperature control stirs less than 60 ℃ that cooling is less than 30 ℃ after 90-120 minute, add dehydrated alcohol 8-10 part, evenly stir composite scale inhibitor; Synthetic self-made inhibitor is with industrial acetic 25-30 part, pure water 20-23 part, drop into reactor, stirred the phosphorus trichloride that adds 33-37 part slowly in 30-40 minute, temperature control is less than 40 ℃, constant temperature 15-30 minute, in 30-60 minute, be warming up to 110～120 ℃ slowly, back flow reaction 55-65 minute, the cooling underpressure distillation, when temperature is reduced to 50 ℃, slowly the potassium hydroxide that added 15-18 part in 30-60 minute, temperature control is chilled to room temperature stirring 60-90 minute below 50 ℃.This agent is 10mg/L-50mg/L to the dosage of re-injection water.This agent also is applicable to recirculated water.
Description
Technical field
The present invention relates to scale inhibition processing, especially the selecting for use of Scale inhibitors of the re-injection water in oil field, particularly a kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water.
Background technology
It is a kind of reoovery method commonly used that the Oilfield using waterflooding recovers the oil, intensification along with recovery percent, water injection rate is increasing, main is re-injection after the extraction sewage disposal, but oilfield produced waste water contains easily incrustation ion such as a large amount of calcium, magnesium, they are separated out in the inner-walls of duct fouling under situations such as temperature variation easily, influence the ordinary production in oil field.Adopt the chemical scale-inhibiting agent to prevent that fouling from being oil field reinjection water method of scale inhibition commonly used.Easy, the easy row of this method, but need in use Scale inhibitors is reasonably selected.
Scale inhibitors commonly used at present is acid Scale inhibitors or alkaline Scale inhibitors, and acid Scale inhibitors commonly used is single product or its composite products such as 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, and it is acid that this type of medicament is, and easily medicine machine, pipeline caused corrosion, problems such as use cost height; Alkaline Scale inhibitors commonly used is single product and composite products thereof such as ethylenediamine tetraacetic methene sodium phosphate, exists range of application narrow, and problem such as scale inhibition effect is undesirable.
The present invention has prepared a kind of neutral composite scale inhibitor that is, and drawbacks such as equipment and pipeline corrosion, range of application are narrow to evade, cost height realize low-cost, efficient scale and antiscale, stop the purpose of burn into safe handling.
Summary of the invention
The objective of the invention is: a kind of neutral composite scale inhibitor that is used for oil field reinjection water is provided, select synthetic with self-made inhibitor by preparation, make scale inhibition synergy, produce strong synergy, it is neutral that medicament itself is, equipment and pipeline are not caused corrosion, meet the national sector standard evaluation, satisfy the service requirements of oil field reinjection water.
The object of the present invention is achieved like this: a kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water, batching add promptly synthetic by weight; Self-made inhibitor 18-20 part wherein, Amino Trimethylene Phosphonic Acid 25-30 part, vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer 8-10 part, pure water 20-22 part is dropped in the reactor, stirs 20～35 ℃ of temperature controls 30～60 minutes; Slowly added 14-16 part potassium hydroxide in 30-45 minute, temperature control stirs when being cooled to less than 30 ℃ after 90～120 minutes less than 60 ℃, adds dehydrated alcohol 8-10 part, evenly stirs and promptly gets neutral composite scale inhibitor.
The preparation of described neutral composite scale inhibitor, the batching of self-made inhibitor add promptly synthetic by weight; Wherein industrial acetic 25-30 part, pure water 20-23 part are dropped in the reactor, stir the phosphorus trichloride that slowly adds 33-37 part in 30-40 minute, temperature control is less than 40 ℃, constant temperature 15-30 minute then, in 30-60 minute, be warming up to 110～120 ℃ slowly, back flow reaction 55-65 minute, cooling, carry out underpressure distillation, when temperature is reduced to 50 ℃, in 30-60 minute, slowly add the potassium hydroxide of 15-18 part, temperature control is cooled to room temperature and gets final product stirring below 50 ℃ 60～90 minutes.
The preparation of above-mentioned neutral composite scale inhibitor, the control pH value is 6.5-7.5 when synthetic.
The preparation of above-mentioned neutral composite scale inhibitor, the dosage of this agent in oil field reinjection water is 10mg/L～50mg/L, also can do corresponding adjustment according to the water quality situation.
The preparation of described neutral composite scale inhibitor, the phosphorus trichloride of batching, industrial acetic, Amino Trimethylene Phosphonic Acid, potassium hydroxide, vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer, dehydrated alcohol are commercially available industrial goods; Pure water is three grades of water; The self-made inhibitor solid content is greater than 45%.
The preparation of described neutral composite scale inhibitor is used for the Scale inhibitors of oil field reinjection water, also can be used in the recirculated cooling water.
The present invention verifies the performance and the practicality of product by following test:
Carry out the scale inhibition evaluation according to People's Republic of China's oil and gas industry standard SY/T 5673-93 " oil field scale inhibitor method of evaluating performance ", added amount of chemical is 10mg/L.
Adopt " SY/T 5273-2000 oil field extracted water with inhibiter method of evaluating performance 3 normal pressure static etch rate and corrosion inhibition rate measuring method " to carry out the evaluation of corrosion mitigating effect, 50 ℃ of test temperatures, test period 4 days, added amount of chemical 50mg/L the results are shown in composite scale inhibitor scale-inhibiting properties performance evaluation table
In the table:
| Medicament | Resistance calcium sulfate dirt rate, % | Resistance calcium carbonate scale rate, % | Resistance barium sulfate scale rate, % | Resistance strontium sulfate scale rate, % | Erosion rate, mm/a |
| Embodiment 1 | ??93.12 | ??99.43 | ??91.05 | ??90.12 | ??0.0001 |
| Embodiment 2 | ??92.89 | ??99.76 | ??90.89 | ??90.01 | ??0.0002 |
| Embodiment 3 | ??93.34 | ??99.21 | ??91.36 | ??90.09 | ??0.0001 |
| Comparative Examples 1 | ??83.05 | ??92.03 | ??65.24 | ??78.79 | ??0.1750 |
| Comparative Examples 2 | ??81.03 | ??91.54 | ??62.37 | ??79.56 | ??0.0723 |
Learnt that by table neutral composite scale inhibitor effect obviously is better than Comparative Examples, when effectively controlling all kinds of fouling, erosion rate is well below Comparative Examples, and is respond well.
Comparative Examples 1, the acid Scale inhibitors 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid of using always in the oil field reinjection water, its active ingredient 〉=50%.
Comparative Examples 2, the alkalescence Scale inhibitors ethylene diamine tetra methylene phosphonic acid sodium of using always in the oil field reinjection water, active ingredient 〉=28%.
The present invention handles the oil field reinjection water that neutral composite scale inhibitor is used for the Xinjiang field joint stations, and the re-injection condition of water quality is: Na
+: 1111.73mg/L, Mg
2+: 95.62mg/L, Ca
2+: 439.52mg/L, Cl
-: 2168.66mg/L, SO
4 2-: 1186.96mg/L, HCO
3 -: 138.94mg/L, PH=7.40, salinity: during 5077.72mg/L; Take to add continuously, dosage is 10mg/L, and is good through the running condition in 1 year, and the obstruction of no pipeline and pump and corrosion phenomenon have reached the service requirements of regulation, for oilfield safety production provides strong technical guarantee.
The present invention conceives a kind of preparation that is the neutral composite scale inhibitor with research, select synthetic with self-made inhibitor by preparation, make scale inhibition synergy, produce strong synergy, it is neutral that medicament itself is, and equipment and pipeline do not caused corrosion, satisfies the service requirements of oil field reinjection water, realize low cost, efficient scale and antiscale, stopped the purpose of burn into safe handling, shown technical progress.
Embodiment
Embodiment 1
Batching and preparation: (adding promptly synthetic by weight)
Neutral composite scale inhibitor: 20 parts of self-made inhibitor, 25 parts of Amino Trimethylene Phosphonic Acid, 10 parts of vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer, 20 parts of pure water drop in the reactor, stir 20～35 ℃ of temperature controls 30～60 minutes; Slowly added 16 parts of potassium hydroxide in 30-45 minute, temperature control stirs when being cooled to less than 30 ℃ after 90～120 minutes less than 60 ℃, adds 9 parts of dehydrated alcohols, evenly stirs promptly.The control pH value is 6.5-7.5 when synthetic.
Self-made inhibitor: 25 parts of industrial acetic, 23 parts of pure water, drop in the reactor, in 30-40 minute, stir the phosphorus trichloride that slowly adds 37 parts, temperature control is less than 40 ℃, constant temperature 15-30 minute then, in 30-60 minute, be warming up to 110～120 ℃ slowly, back flow reaction 55-65 minute, cooling, carry out underpressure distillation, when temperature is reduced to 50 ℃, in 30-60 minute, slowly add 15 parts potassium hydroxide, temperature control is cooled to room temperature and gets final product stirring below 50 ℃ 60～90 minutes.
This agent is 10mg/L-50mg/L to the dosage of re-injection water.This agent also is applicable to recirculated water.
Embodiment 2
Batching and preparation: (adding promptly synthetic by weight)
Neutral composite scale inhibitor: 18 parts of self-made inhibitor, 30 parts of Amino Trimethylene Phosphonic Acid, 8 parts of vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer, 22 parts of pure water drop in the reactor, stir 20～35 ℃ of temperature controls 30～60 minutes; Slowly added 14 parts of potassium hydroxide in 30-45 minute, temperature control stirs when being cooled to less than 30 ℃ after 90～120 minutes less than 60 ℃, adds 8 parts of dehydrated alcohols, evenly stirs promptly.The control pH value is 6.5-7.5 when synthetic.
Self-made inhibitor: 30 parts of industrial acetic, 20 parts of pure water, drop in the reactor, in 30-40 minute, stir the phosphorus trichloride that slowly adds 33 parts, temperature control is less than 40 ℃, constant temperature 15-30 minute then, in 30-60 minute, be warming up to 110～120 ℃ slowly, back flow reaction 55-65 minute, cooling, carry out underpressure distillation, when temperature is reduced to 50 ℃, in 30-60 minute, slowly add 17 parts potassium hydroxide, temperature control is cooled to room temperature and gets final product stirring below 50 ℃ 60～90 minutes.
This agent is 10mg/L-50mg/L to the dosage of re-injection water.This agent also is applicable to recirculated water.
Embodiment 3
Batching and preparation: (adding promptly synthetic by weight)
Neutral composite scale inhibitor: 19 parts of self-made inhibitor, 26 parts of Amino Trimethylene Phosphonic Acid, 9 parts of vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer, 21 parts of pure water drop in the reactor, stir 20～35 ℃ of temperature controls 30～60 minutes; Slowly added 15 parts of potassium hydroxide in 30-45 minute, temperature control stirs when being cooled to less than 30 ℃ after 90～120 minutes less than 60 ℃, adds 10 parts of dehydrated alcohols, evenly stirs promptly.The control pH value is 6.5-7.5 when synthetic.
Self-made inhibitor: 27 parts of industrial acetic, 21 parts of pure water, drop in the reactor, in 30-40 minute, stir the phosphorus trichloride that slowly adds 34 parts, temperature control is less than 40 ℃, constant temperature 15-30 minute then, in 30-60 minute, be warming up to 110～120 ℃ slowly, back flow reaction 55-65 minute, cooling, carry out underpressure distillation, when temperature is reduced to 50 ℃, in 30-60 minute, slowly add 18 parts potassium hydroxide, temperature control is cooled to room temperature and gets final product stirring below 50 ℃ 60～90 minutes.
This agent is 10mg/L-50mg/L to the dosage of re-injection water.This agent also is applicable to recirculated water.
Claims (6)
1. preparation that is used for the neutral composite scale inhibitor of oil field reinjection water is characterized in that: batching adds promptly synthetic by weight; Self-made inhibitor 18-20 part wherein, Amino Trimethylene Phosphonic Acid 25-30 part, vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer 8-10 part, pure water 20-22 part is dropped in the reactor, stirs 20～35 ℃ of temperature controls 30～60 minutes; Slowly added 14-16 part potassium hydroxide in 30-45 minute, temperature control stirs when being cooled to less than 30 ℃ after 90～120 minutes less than 60 ℃, adds dehydrated alcohol 8-10 part, evenly stirs and promptly gets neutral composite scale inhibitor.
2, according to the preparation of the described neutral composite scale inhibitor of claim 1, it is characterized in that: the batching of self-made inhibitor adds promptly synthetic by weight; Wherein industrial acetic 25-30 part, pure water 20-23 part are dropped in the reactor, stir the phosphorus trichloride that slowly adds 33-37 part in 30-40 minute, temperature control is less than 40 ℃, constant temperature 15-30 minute then, in 30-60 minute, be warming up to 110～120 ℃ slowly, back flow reaction 55-65 minute, cooling, carry out underpressure distillation, when temperature is reduced to 50 ℃, in 30-60 minute, slowly add the potassium hydroxide of 15-18 part, temperature control is cooled to room temperature and gets final product stirring below 50 ℃ 60～90 minutes.
3, according to the preparation of the described neutral composite scale inhibitor of claim 1, it is characterized in that: the control pH value is 6.5-7.5 when synthetic.
4, according to the preparation of the described neutral composite scale inhibitor of claim 1, it is characterized in that: the dosage of this agent in oil field reinjection water is 10mg/L～50mg/L, also can do corresponding adjustment according to the water quality feelings.
5, according to the preparation of the described neutral composite scale inhibitor of claim 1, it is characterized in that: the phosphorus trichloride of batching, industrial acetic, Amino Trimethylene Phosphonic Acid, potassium hydroxide, vinylformic acid-acrylate-2-acrylamide-2-methyl propane sulfonic acid terpolymer, dehydrated alcohol are commercially available industrial goods; Pure water is three grades of water; The self-made inhibitor solid content is greater than 45%.
6, according to the preparation of the described neutral composite scale inhibitor of claim 1, it is characterized in that: be used for the Scale inhibitors of oil field reinjection water, also can be used in the recirculated cooling water.
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| CN2009101133635A CN101607767B (en) | 2009-06-09 | 2009-06-09 | Preparation of neutral compound scale inhibitor used for oil field reinjection water |
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|---|---|---|---|
| CN2009101133635A CN101607767B (en) | 2009-06-09 | 2009-06-09 | Preparation of neutral compound scale inhibitor used for oil field reinjection water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276069A (en) * | 2011-05-06 | 2011-12-14 | 河北科技大学 | Reinjection water treatment agent for oil well |
| CN103030216A (en) * | 2011-09-30 | 2013-04-10 | 中国科学院沈阳应用生态研究所 | High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof |
| CN104230016A (en) * | 2014-09-07 | 2014-12-24 | 无棣华信石油技术服务有限公司 | Oilfield reinjection water scale inhibitor and preparation method thereof |
| CN104386835A (en) * | 2014-11-25 | 2015-03-04 | 苏州佑君环境科技有限公司 | Anti-scaling agent for oilfield downhole and preparation method thereof |
| CN109354222A (en) * | 2018-11-15 | 2019-02-19 | 山东泰和水处理科技股份有限公司 | A kind of oil field neutrality scale removal dispersing agent |
| CN109777391A (en) * | 2019-03-27 | 2019-05-21 | 西安元和利馨能源科技有限公司 | A kind of oil field no acid type neutrality chelating de-plugging agent |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1524799A (en) * | 2003-02-28 | 2004-09-01 | 中国石油化工股份有限公司 | Method for extinguishing alga in cooling water system |
| CN101244856B (en) * | 2008-03-11 | 2010-06-23 | 武汉科技学院 | Chemical control method for corrosion microorganism in pipeline conveyance system and product |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276069A (en) * | 2011-05-06 | 2011-12-14 | 河北科技大学 | Reinjection water treatment agent for oil well |
| CN102276069B (en) * | 2011-05-06 | 2013-03-13 | 河北科技大学 | Reinjection water treatment agent for oil well |
| CN103030216A (en) * | 2011-09-30 | 2013-04-10 | 中国科学院沈阳应用生态研究所 | High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof |
| CN103030216B (en) * | 2011-09-30 | 2014-03-12 | 中国科学院沈阳应用生态研究所 | High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof |
| CN104230016A (en) * | 2014-09-07 | 2014-12-24 | 无棣华信石油技术服务有限公司 | Oilfield reinjection water scale inhibitor and preparation method thereof |
| CN104386835A (en) * | 2014-11-25 | 2015-03-04 | 苏州佑君环境科技有限公司 | Anti-scaling agent for oilfield downhole and preparation method thereof |
| CN104386835B (en) * | 2014-11-25 | 2016-02-24 | 新昌县羽林街道昱泉机械厂 | A kind of oil field well scale inhibitor and preparation method thereof |
| CN109354222A (en) * | 2018-11-15 | 2019-02-19 | 山东泰和水处理科技股份有限公司 | A kind of oil field neutrality scale removal dispersing agent |
| CN109354222B (en) * | 2018-11-15 | 2021-10-12 | 山东泰和水处理科技股份有限公司 | Neutral descaling dispersant for oil field |
| CN109777391A (en) * | 2019-03-27 | 2019-05-21 | 西安元和利馨能源科技有限公司 | A kind of oil field no acid type neutrality chelating de-plugging agent |
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| CN101607767B (en) | 2011-01-26 |
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