CN103030216B - High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof - Google Patents
High-temperature resisting oil field scale inhibitor with emulsifying function and preparation method thereof Download PDFInfo
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- CN103030216B CN103030216B CN201110300264.5A CN201110300264A CN103030216B CN 103030216 B CN103030216 B CN 103030216B CN 201110300264 A CN201110300264 A CN 201110300264A CN 103030216 B CN103030216 B CN 103030216B
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Abstract
The invention relates to the petroleum chemical industry field and in particular to a high-temperature resisting oil field scale inhibitor with an emulsifying function and a preparation method thereof. The scale inhibitor comprises the following components by weight percent: 2-9% of sodium hexametaphosphate, 13-20% of zinc sulfate, 1-3% of emulsifying agent OP-15, 10-18% of amino trimethylene phosphonic acid, 8-16% of 2-phosphonic acid-1,2,4-tricarboxylic acid butane, 4-6% of sodium sulfite and the balance of water. The scale inhibitor provided by the invention has the emulsifying function, the inhibition rate of the high-temperature resisting oil field scale inhibitor is larger than 97%, and the scale inhibiting ratio is larger than 92% in a high temperature environment of 85 DEG C; and the high-temperature resisting oil field scale inhibitor has better scale inhibiting effect on typical scaling of a watering tube of an oil field gathering and transportation system.
Description
Technical field
The present invention relates to petrochemical industry, specifically a kind of high temperature resistant oil field Scale inhibitors with emulsifying effect and preparation method thereof.
Background technology
In oilfield transportation system, the corrosion and scaling problem of various pipes is restricting oil field development always, the pipeline breaking causing due to corrosion and the fouling of pipeline and block and brought huge financial loss to oil field, when situation is serious, can make whole oilfield transportation system paralysis, cause the interrupting or stopping of oilfield exploitation and conveying.
Fouling in oilfield transportation system in water mixing pipeline is different from again the fouling in general water pipe, because water mixing source mainly utilizes oil field extracted water, has higher oleaginousness, causes the formation of its dirt and the uniqueness that type all has water mixing pipeline scaling.The outstanding feature of this class fouling is exactly that dirt is chequered with black and white laminate structure, this is that one-tenth dirt process by oil-field water itself determines, oil in the forming process of this class dirt in water is first attached to inner-walls of duct, suspended substance in water sticks to and on these attaching oils, forms the suspended matter dirt that one deck is black afterwards, this layer of shaggy dirt makes calcium carbonate crystal can better separate out to form the smooth calcium carbonate scale of one deck white in the above, on calcium carbonate scale, form afterwards suspended matter dirt, circulation forms the stratiform dirt that is chequered with black and white gradually like this again.As can be seen here, prevent that this type of dirty formation can be by stoping the formation of the first layer dirt to improve the scale inhibition effect to water mixing pipeline.
The problems referred to above often occur in oil field water mixing pipeline, in the defeated process of collection of the characteristic oil such as especially high in wax content, wax precipitation temperature is high, zero pour is high, viscosity is large, because this class oil mobility is poor and the separating out of wax, often cause the obstruction of transport pipe, so conventionally reach conveying object in high temperature water mixing mode.But due to the significantly rising of water temperature, the appearance of following problem can make the fouling of water mixing pipeline more serious: the rising of (1) water temperature has destroyed oil-in-water structure allows more oil have an opportunity to be attached to tube wall; (2) Scale inhibitors at high temperature decomposes affects scale inhibition effect; (3) solubility with temperature of calcium carbonate raises and declines it is more easily separated out.Only have and solved above 3 problems and could in the scale problems of this quasi-representative, have breakthrough preventing, and the 3rd problem is that calcium carbonate inherent nature cannot change, therefore, can reach desirable scale inhibition effect by improving thermostability and the emulsifying effect of Scale inhibitors.
Though conventional corrosion inhibiting and descaling agent has good anticorrosion-antiscaling effect in the ordinary course of things at present, once but be applied in high temperature oil field water treatment, this class corrosion inhibiting and descaling agent, due to poor heat stability and the shortcoming that is not suitable with oil-field water, just loses its good anticorrosion-antiscaling effect.In published patent, patent CN101412565A discloses a kind of efficient scale corrosion inhibitor for carbon steel system, and its scale inhibition performance can reach 97.5%-99% in the time of 50 ℃; Patent CN 101913712A discloses low-phosphorous environment-friendly scale inhibitor and the preparation of a kind of adaptation " three height " water quality, this agent is applicable to recirculating cooling water system and the oil-field water of high rigidity, high alkalinity, high salinity and processes, 60 ℃ of experimental temperatures, during drug concentration 50mg/L, scale inhibition performance can reach 99.88%; It is 78.2% that patent CN 101973644A discloses a kind of composite scale inhibitor of take 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, hydrolytic polymaleic anhydride, polyacrylic acid, Sulfonated Copolymer of Styrene and Maleic Anhydride preparation high carbon acid calcium scale inhibition performance in the time of 80 ℃.Scale inhibitors described in these patents under general condition all has good scale inhibition effect, but its performance is just no longer desirable when temperature raises, seldom can be applied in high temperature oil field water mixing, therefore the scale problems that, solves high temperature oil field water mixing pipeline just need a kind of can the high temperature resistant corrosion inhibiting and descaling agent that is applicable to again oil field.
Summary of the invention
The object of this invention is to provide a kind of high temperature resistant oil field Scale inhibitors with emulsifying effect and preparation method thereof.
For achieving the above object, the technical solution used in the present invention is:
A kind of high temperature resistant oil field Scale inhibitors with emulsifying effect: Scale inhibitors by Sodium hexametaphosphate 99, zinc sulfate, polyoxyethylene nonylphenol ether-15 (purchased from Liaoyang Losec chemistry Group Co.,Ltd, formal name used at school is alkylphenol-polyethenoxy (15) ether), Amino Trimethylene Phosphonic Acid, 2-phosphonic acids-1,2,4-butane tricarboxylate, S-WAT and water form; By weight percentage, 2%-9% Sodium hexametaphosphate 99,13%-20% zinc sulfate, 1%-3% polyoxyethylene nonylphenol ether-15,10%-18% Amino Trimethylene Phosphonic Acid, 8%-16%2-phosphonic acids-1,2,4-butane tricarboxylate and 4%-6% S-WAT, surplus is water.
The preparation method with the high temperature resistant oil field Scale inhibitors of emulsifying effect: according to the above ratio water is joined in reactor, add again Sodium hexametaphosphate 99, stir 20 minutes, add afterwards liquid single dose in above-mentioned single dose to stir 5 minutes, finally add zinc sulfate and remaining single dose to stir again and within 10 minutes, obtain Scale inhibitors.
The present invention has advantages of:
The high temperature resistant oil field Scale inhibitors of emulsifying effect of the present invention is the fouling feature for oil field water mixing pipeline, in conjunction with emulsifying effect, realize the scale inhibition of high temperature oil field water mixing pipeline, specifically utilize emulsifying effect to make water mixing form oil-in-water-type structure and stop in water the generation that suppresses calcium carbonate scale when oil is attached to tube wall in conjunction with scale effect.After measured, Scale inhibitors of the present invention has emulsifying effect, has high-efficiency corrosion-mitigation scale-inhibition effect (corrosion inhibition rate is greater than 97%, scale inhibition performance be greater than 92%) in the time of in high temperature (85 ℃) water.
Specific embodiments
Embodiment 1
The preparation of Scale inhibitors: the high temperature resistant oil field Scale inhibitors in composition weight ratio preparation described in table 1 with emulsifying effect, water is joined in reactor, add again Sodium hexametaphosphate 99, stir 20 minutes, add afterwards liquid single dose in single dose to stir 5 minutes, finally add zinc sulfate and remaining single dose to stir again 10 minutes Scale inhibitorss that get product.
Each medicament part by weight of table 1 preparation Scale inhibitors
Make Scale inhibitors RZ-01, RZ-02, RZ-03, RZ-04, RZ-05 is colourless transparent liquid.
Embodiment 2 Scale inhibitors corrosion and scale inhibition performance evaluation Example:
Performance of antisludging agent is evaluated according to inhibiter method of evaluating performance and SY-T5673-1993 scale inhibitor for oilfield Reliable Evaluating Methods of Their Performance for SY-T5273-2000 oil field extracted water.Experimental water reference oil field water quality characteristics is corrosive fluid (the concrete composition of corrosive fluid is referring to table 2) for test preparation, and preparation corrosive fluid institute water is distilled water, and medicine is analytical reagent.
Table 2 self-control corrosive fluid component
Get above-mentioned RZ-01 Scale inhibitors, with oil and gas industry standard corrosion coupon (operative norm (SY-5273), material (Q235-A (A3)), specification: 76mm * 13mm * 2.5mm, surface-area 24.21cm
2) test.According to industry standard, adopt the at high temperature corrosion inhibiting and descaling agent performance of this Scale inhibitors of rotary hanging plate method evaluation.Experiment condition is: 85 ℃, and rotary hanging plate 48h, scale inhibitor dosage 140mg/L, experimental result is corrosion inhibition rate 97.69%, scale inhibition performance is 92.22%.
Get above-mentioned RZ-02 Scale inhibitors, with oil and gas industry standard corrosion coupon (operative norm (SY-5273), material (Q235-A (A3)), specification: 76mm * 13mm * 2.5mm, surface-area 24.21cm
2) test.According to industry standard, adopt the at high temperature corrosion inhibiting and descaling agent performance of this Scale inhibitors of rotary hanging plate method evaluation.Experiment condition is: 85 ℃, and rotary hanging plate 48h, scale inhibitor dosage 140mg/L, experimental result is corrosion inhibition rate 97.43%, scale inhibition performance is 90.50%.
Get above-mentioned RZ-03 Scale inhibitors, with oil and gas industry standard corrosion coupon (operative norm (SY-5273), material (Q235-A (A3)), specification: 76mm * 13mm * 2.5mm, surface-area 24.21cm
2) test.According to industry standard, adopt the at high temperature corrosion inhibiting and descaling agent performance of this Scale inhibitors of rotary hanging plate method evaluation.Experiment condition is: 85 ℃, and rotary hanging plate 24h, scale inhibitor dosage 140mg/L, experimental result is corrosion inhibition rate 96.08%, scale inhibition performance is 95.75%.
Get above-mentioned RZ-04 Scale inhibitors, with oil and gas industry standard corrosion coupon (operative norm (SY-5273), material (Q235-A (A3)), specification: 76mm * 13mm * 2.5mm, surface-area 24.21cm
2) test.According to industry standard, adopt the at high temperature corrosion inhibiting and descaling agent performance of this Scale inhibitors of rotary hanging plate method evaluation.Experiment condition is: 85 ℃, and rotary hanging plate 24h, scale inhibitor dosage 140mg/L, experimental result is corrosion inhibition rate 95.29%, scale inhibition performance is 94.74%.
Get above-mentioned RZ-05 Scale inhibitors, with oil and gas industry standard corrosion coupon (operative norm (SY-5273), material (Q235-A (A3)), specification: 76mm * 13mm * 2.5mm, surface-area 24.21cm
2) test.According to industry standard, adopt the at high temperature corrosion inhibiting and descaling agent performance of this Scale inhibitors of rotary hanging plate method evaluation.Experiment condition is: 85 ℃, and rotary hanging plate 24h, scale inhibitor dosage 140mg/L, experimental result is corrosion inhibition rate 93.73%, scale inhibition performance is 93.83%.
Claims (1)
1. a high temperature resistant oil field Scale inhibitors with emulsifying effect, is characterized in that: Scale inhibitors is by Sodium hexametaphosphate 99, zinc sulfate, polyoxyethylene nonylphenol ether-15, Amino Trimethylene Phosphonic Acid, 2-phosphonic acids-1, and 2,4-butane tricarboxylate, S-WAT and water form; Mark meter by weight, 2%-9% Sodium hexametaphosphate 99,13%-20% zinc sulfate, 1%-3% polyoxyethylene nonylphenol ether-15,10%-18% Amino Trimethylene Phosphonic Acid, 8%-16%2-phosphonic acids-1,2,4-butane tricarboxylate and 4%-6% S-WAT, surplus is water;
According to the above ratio water is joined in reactor, then add Sodium hexametaphosphate 99, stir 20 minutes, add afterwards liquid single dose in above-mentioned single dose to stir 5 minutes, finally add zinc sulfate and remaining single dose to stir again and within 10 minutes, obtain Scale inhibitors.
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| CN106082459A (en) * | 2016-07-30 | 2016-11-09 | 山东胜伟园林科技有限公司 | A kind of application containing stearic antisludging agent in salt discharge hidden pipe |
| CN106380535A (en) * | 2016-08-30 | 2017-02-08 | 句容宁武高新技术发展有限公司 | Oil field scale inhibitor and preparation method thereof |
| CN106905942A (en) * | 2017-04-27 | 2017-06-30 | 陈秋华 | A kind of Oilfield-applied Scale-Inhibitors and preparation method thereof |
| CN112978945A (en) * | 2020-12-31 | 2021-06-18 | 湖南伟方环保技术股份有限公司 | Special scale inhibitor for papermaking black liquor and preparation method thereof |
| CN114380657B (en) * | 2022-01-12 | 2022-12-09 | 河北京煤太行化工有限公司 | Emulsified ammonium nitrate fuel oil explosive and preparation process thereof |
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| CN101607767A (en) * | 2009-06-09 | 2009-12-23 | 新疆德蓝股份有限公司 | A kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water |
| CN101805597A (en) * | 2010-03-11 | 2010-08-18 | 中国石油集团川庆钻探工程有限公司 | Solid corrosion and scale inhibitor for oil field |
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| US20060113505A1 (en) * | 2004-10-19 | 2006-06-01 | Baker Hughes Incorporated | Scale inhibitor, composition useful for preparing same, and method of inhibiting scale |
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| CN101607767A (en) * | 2009-06-09 | 2009-12-23 | 新疆德蓝股份有限公司 | A kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water |
| CN101805597A (en) * | 2010-03-11 | 2010-08-18 | 中国石油集团川庆钻探工程有限公司 | Solid corrosion and scale inhibitor for oil field |
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