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Salt-tolerant and high-temperature-resistant antisludging agent and preparation method thereof

A technology of high temperature resistance and scale inhibitor, applied in chemical instruments and methods, descaling and water softening, complex/solubilizer treatment, etc. The effect of low cost, strong adaptability and simple operation

Inactive Publication Date: 2015-09-23
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Oilfield scaling has become a serious problem that affects oilfield production order and shortens oilfield life. Oilfield scaling is caused by the combined action of many factors. In summary, there are three main causes: incompatibility of chemical properties, changes in thermodynamic conditions and adsorption ;Among various types of scale, barium sulfate scale is the most difficult type of oilfield scale to remove because of its dense structure and generally insoluble in acid; currently there is no scale inhibitor for barium sulfate

Method used

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  • Salt-tolerant and high-temperature-resistant antisludging agent and preparation method thereof

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with specific examples.

[0020] Take by weighing 188g maleic anhydride, 68g acrylic acid, 40g vinyl acetate, 4g2-acrylamide-2-methylpropanesulfonic acid, 40g ammonium persulfate and 40g distilled water; then take maleic anhydride and place it in a beaker, Add 25g of distilled water, and after the maleic anhydride solid is completely dissolved, pour the above solution into a four-neck flask; take acrylic acid, vinyl acetate, 2-acrylamide-2-methylpropanesulfonic acid and 5g of distilled water to make a mixed Solution, move the mixed solution into a constant pressure separatory funnel; take ammonium persulfate and 10g distilled water to make an ammonium persulfate solution; place the maleic anhydride solution in a water bath and heat it to 60°C, and add acrylic acid dropwise at the same time , vinyl acetate, distilled aqueous solution of 2-acrylamide-2-methylpropanesulfonic acid, and ammonium persulfate ...

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Abstract

The invention discloses a salt-tolerant and high-temperature-resistant antisludging agent. The agent is composed of, by weight, 49.5% of maleic anhydride, 18.0% of crylic acid, 10.5% of vinyl acetate, 1.0% pf 2-acrylamido-2-methylpropane sulfonic acid, 10.5% of ammonium persulfate and 10.5% of distilled water. The prepared antisludging agent is resistant to salt and high temperature, high in dispersion effect, high in use concentration and high in adaptability to the pH value.

Description

technical field [0001] The invention relates to a scale inhibitor and a preparation method thereof, in particular to a salt-resistant and high-temperature resistant scale inhibitor and a preparation method thereof. Background technique [0002] Oilfield scaling has become a serious problem that affects oilfield production order and shortens oilfield life. Oilfield scaling is caused by the combined action of many factors. In summary, there are three main causes: incompatibility of chemical properties, changes in thermodynamic conditions and adsorption ; Among various types of scale, barium sulfate scale is the most difficult to remove because of its dense structure and generally insoluble in acid; currently there is no scale inhibitor for barium sulfate. Contents of the invention [0003] The invention provides a scale inhibitor capable of effectively preventing the generation of barium sulfate scale. [0004] The technical scheme adopted in the present invention is: a sal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/12C02F5/08
Inventor 罗志锋刘平礼唐翔宇李年银张楠林袁学芳赵立强刘举李骏
Owner SOUTHWEST PETROLEUM UNIV
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