CN104925968B - A kind of salt tolerant high-temperature-resistant scale inhibitor and preparation method thereof - Google Patents
A kind of salt tolerant high-temperature-resistant scale inhibitor and preparation method thereof Download PDFInfo
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- CN104925968B CN104925968B CN201510394597.7A CN201510394597A CN104925968B CN 104925968 B CN104925968 B CN 104925968B CN 201510394597 A CN201510394597 A CN 201510394597A CN 104925968 B CN104925968 B CN 104925968B
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Abstract
The invention discloses a kind of salt tolerant high-temperature-resistant scale inhibitor, it is made up of following raw materials by weight：Maleic anhydride 49.5%, acrylic acid 18.0%, vinyl acetate 10.5%, 2 acrylamide 2 methyl propane sulfonic acid 1.0%, Ammonium persulfate. 10.5%, distilled water 10.5%；The antisludging agent salt tolerant of present invention preparation is high temperature resistant, and peptizaiton is strong, and concentration is high, the strong adaptability to acid-base value.
Description
Technical field
The present invention relates to a kind of antisludging agent and preparation method thereof, particularly to a kind of salt tolerant high-temperature-resistant scale inhibitor and its preparation
Method.
Background technology
Oilfield scaling has become the impact oil field production order, has shortened Tough questions of oilfield life, and oilfield scaling is
By cause under many factors comprehensive function, summarizing main reason has at 3 points：Chemical property is incompatible, thermodynamic condition
Change and absorption；In various types of dirts, barium sulfate scale, because of its compact structure and typically insoluble in acid, becomes and is difficult to most remove
The oil field dirt type going；There is presently no the antisludging agent for barium sulfate.
Content of the invention
The present invention provides a kind of antisludging agent of the generation that can effectively prevent barium sulfate scale.
The technical solution used in the present invention is：A kind of salt tolerant high-temperature-resistant scale inhibitor, by following raw materials by weight structure
Become：Maleic anhydride 49.5%, acrylic acid 18.0%, vinyl acetate 10.5%, 2- acrylamide-2-methyl propane sulfonic
1.0%th, Ammonium persulfate. 10.5%, distilled water 10.5%.
A kind of preparation method of salt tolerant high-temperature-resistant scale inhibitor it is characterised in that：Comprise the following steps successively：
(1) weigh raw material by following percentage by weight：Maleic anhydride 49.5%, acrylic acid 18.0%, vinyl acetate
Ester 10.5%, 2- acrylamide-2-methyl propane sulfonic 1.0%, Ammonium persulfate. 10.5%, distilled water 10.5%；
(2) take maleic anhydride to be placed in container, add appropriate distilled water until maleic anhydride dissolves；
(3) acrylic acid, vinyl acetate, 2- acrylamide-2-methyl propane sulfonic and appropriate distilled water is taken to be sufficiently mixed molten
Solution；
(4) Ammonium persulfate. and remaining distilled water mix homogeneously are taken；
(5) solution in step (2) is heated to constant temperature after 60 DEG C, is then slowly dropped into step (3) and step (4) simultaneously
Prepared solution；
(6) solution obtained by step (5) is warming up to 80 DEG C of constant temperature, until reaction is completely；
(7) natural cooling under room temperature, obtains required salt tolerant high-temperature-resistant scale inhibitor.
Preferably, mode of heating is heating in water bath in described step (5) and step (6).
Preferably, in described step (6) response time be 5h.
The invention has the beneficial effects as follows：
(1) the antisludging agent salt tolerant of the present invention is high temperature resistant, and peptizaiton is strong, and concentration is high；
(2) strong adaptability to acid-base value for the antisludging agent of the present invention；
(3) preparation method in the present invention is simple to operate, and the cost of raw material is cheap.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Weigh 188g maleic anhydride, 68g acrylic acid, 40g vinyl acetate, 4g2- acrylamide -2- methyl-prop sulphur
Acid, 40g Ammonium persulfate. and 40g distilled water；Then take maleic anhydride to be placed in beaker, add 25g distilled water, treat maleic
After dicarboxylic anhydride solid is completely dissolved, above-mentioned solution is poured in four-hole boiling flask；Take acrylic acid, vinyl acetate, 2- acrylamide-
Mixed solution made by 2- methyl propane sulfonic acid and 5g distilled water, and mixed solution is moved in constant voltage separatory funnel；Take Ammonium persulfate.
It is configured to ammonium persulfate solution with 10g distilled water；Maleic acid anhydride solution is placed in water-bath to be heated to after 60 DEG C, with
When Deca acrylic acid, vinyl acetate, the distilled water solution of 2- acrylamide-2-methyl propane sulfonic and ammonium persulfate solution, make
Copolyreaction proceeds by, and controls rate of addition, makes solution in 1 hour about completion of dropping；Water-bath temperature is adjusted after being added dropwise to complete
Degree, makes reaction system be warming up to 80 DEG C, and continues isothermal reaction 5 hours；Stop heating, natural cooling under room temperature, obtain yellowish
Color viscous oil-like liquid is this salt tolerant high-temperature-resistant scale inhibitor.
The inhibitor mechanism of the antisludging agent in the present invention set up chelating solubilization, peptizaiton, electrostatic repulsion effect and
On the basis of distortion of lattice effect, this antisludging agent can effectively prevent the generation of barium sulfate scale.
In more than 100mg/L, scale inhibition performance can reach more than 80% to the antisludging agent concentration of the present invention, concentration
In 200mg/L, scale inhibition performance highest；And still can keep preferable performance at relatively high temperatures, when 50 DEG C, scale inhibition performance is up to
92.59%, when temperature reaches 120 DEG C, scale inhibition performance may remain in more than 67%；And stronger to the adaptability of acid-base value,
Under alkaline environment scale inhibition performance be higher than sour environment, pH value be 4 under conditions of scale inhibition performance more than 58%, pH value be 10 when scale inhibition performance
Up to 85.84%；This salt tolerant high-temperature-resistant scale inhibitor salt tolerant effect preferably, in salinity 30000mg/L, can keep 76.4%
Scale inhibition performance.
Antisludging agent prepared by the present invention carries out performance test, and its test result is as shown in table 1：
Table 1 performance of antisludging agent test result
This salt tolerant high-temperature-resistant scale inhibitor, when temperature reaches 120 DEG C, still has 67.1% scale inhibition as can be seen from Table 1
Rate, preferably, when salinity is for 30000mg/L, scale inhibition performance is 76.4% to resistance to elevated temperatures, and salt tolerant effect also disclosure satisfy that mostly
Number high salinity Oil/gas Well, and this salt tolerant high-temperature-resistant scale inhibitor concentration is relatively low, when concentration reaches 100mg/L, resistance
Dirty rate just can reach more than 81%, and it is the strong adaptability to alkaline environment in sour environment that this antisludging agent also has the special feature that.
It can be professional and technical personnel in the field's realization or use that above-mentioned embodiment is intended to illustrate the present invention, to above-mentioned
Embodiment is modified and be will be apparent from for those skilled in the art, therefore the present invention includes but is not limited to
Above-mentioned embodiment, any meet the claims or description description, meet with principles disclosed herein and novelty,
The method of inventive features, technique, product, each fall within protection scope of the present invention.
Claims (3)
1. a kind of preparation method of salt tolerant high-temperature-resistant scale inhibitor it is characterised in that：Comprise the following steps successively：
(1) weigh raw material by following percentage by weight：Maleic anhydride 49.5%, acrylic acid 18.0%, vinyl acetate
10.5%th, 2- acrylamide-2-methyl propane sulfonic 1.0%, Ammonium persulfate. 10.5%, distilled water 10.5%；
(2) take maleic anhydride to be placed in container, add appropriate distilled water until maleic anhydride dissolves；
(3) acrylic acid, vinyl acetate, 2- acrylamide-2-methyl propane sulfonic and appropriate distilled water is taken to be sufficiently mixed dissolving；
(4) Ammonium persulfate. and remaining distilled water mix homogeneously are taken；
(5) solution in step (2) is heated to constant temperature after 60 DEG C, is then slowly dropped into step (3) simultaneously and step (4) is made
Standby solution；
(6) solution obtained by step (5) is warming up to 80 DEG C of constant temperature, until reaction is completely；
(7) natural cooling under room temperature, obtains required salt tolerant high-temperature-resistant scale inhibitor.
2. according to claim 1 a kind of preparation method of salt tolerant high-temperature-resistant scale inhibitor it is characterised in that：Described step (5)
It is heating in water bath with mode of heating in step (6).
3. according to claim 1 a kind of preparation method of salt tolerant high-temperature-resistant scale inhibitor it is characterised in that：Described step (6)
The middle response time is 5h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510394597.7A CN104925968B (en) | 2015-07-07 | 2015-07-07 | A kind of salt tolerant high-temperature-resistant scale inhibitor and preparation method thereof |
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| CN201510394597.7A CN104925968B (en) | 2015-07-07 | 2015-07-07 | A kind of salt tolerant high-temperature-resistant scale inhibitor and preparation method thereof |
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| CN104925968A CN104925968A (en) | 2015-09-23 |
| CN104925968B true CN104925968B (en) | 2017-03-01 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108002551A (en) * | 2017-12-28 | 2018-05-08 | 新疆环境工程技术有限责任公司 | A kind of wet method fume desulfurizing system scale preventative and preparation method thereof |
| CN111441748B (en) * | 2018-12-27 | 2022-03-01 | 中国石油天然气股份有限公司 | Predicting CO2Method for scaling trend of gas drive oil and gas well shaft |
| CN111382486B (en) * | 2018-12-27 | 2022-03-29 | 中国石油天然气股份有限公司 | CO prediction based on stability index2Method for gas drive wellbore scaling tendency |
| CN109748405B (en) * | 2019-02-20 | 2022-04-08 | 中国石油大学(华东) | Temperature-resistant barium strontium sulfate scale inhibitor for oil field and preparation method thereof |
| CN112591902A (en) * | 2020-11-11 | 2021-04-02 | 深圳市腾龙源实业有限公司 | High-temperature salt inhibitor for high-salinity wastewater quenching tower back-spray evaporation system |
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| EP1088794A3 (en) * | 1999-09-29 | 2001-09-26 | National Starch and Chemical Investment Holding Corporation | Polymers containing styrene and unsaturated polycarboxylates as monomers for high stressed water treatment application |
| CN101182078A (en) * | 2007-11-12 | 2008-05-21 | 中国海洋石油总公司 | Corrosion inhibition anti-sludging agent for boiler heating network |
| CN101767883A (en) * | 2008-12-29 | 2010-07-07 | 济南大学 | Method for synthesizing barium strontium scale inhibitor |
| CN102050526B (en) * | 2010-11-18 | 2012-05-23 | 中国海洋石油总公司 | Low-phosphorous high concentration cyele circulating water treatment process |
| CN104045172A (en) * | 2013-12-20 | 2014-09-17 | 江苏佳华新材料科技有限公司 | Preparation method of calcium, strontium and barium scale inhibitor |
| CN103849365B (en) * | 2014-03-21 | 2016-04-27 | 西南石油大学 | A kind of inhibitor for oil well sulfate scale and Synthesis and applications thereof |
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