Anionic-cationic-nonionic surfactant, preparation method therefor and application of anionic-cationic-nonionic surfactant

A surfactant, non-ionic technology, applied in the field of anionic-cationic-nonionic surfactants, can solve the problems of low oil displacement efficiency of displacement fluid, reduction of polymer viscosity, difficulty in demulsification of produced fluid, etc.

Active Publication Date: 2016-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are many problems in the existing displacement fluids for tertiary oil recovery, mainly because the interface activity of the surfactant component is poor, which leads to low oil displacement efficiency of the displacement fluid produced by it, and because the displacement fluid system It is too complicated, so it is difficult to demulsify the produced fluid, and it is difficult to treat the sewage; because the displacement fluid contains inorganic alkali, it will cause damage to the formation and oil wells, causing problems such as corrosion of equipment and pipelines, and because the inorganic alkali will seriously reduce the polymer. Viscosity, in order to achieve the required viscosity, the use concentration of the polymer has to be greatly increased, which increases the overall cost of oil recovery; the ability of the surfactant component to resist high temperature, high salt, and high salinity is limited; the surfactant component Poor stability during compounding, prone to precipitation

Method used

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  • Anionic-cationic-nonionic surfactant, preparation method therefor and application of anionic-cationic-nonionic surfactant
  • Anionic-cationic-nonionic surfactant, preparation method therefor and application of anionic-cationic-nonionic surfactant
  • Anionic-cationic-nonionic surfactant, preparation method therefor and application of anionic-cationic-nonionic surfactant

Examples

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Effect test

Embodiment 1

[0312] 20 moles of dodecylaniline and 2 moles of methyl chloride were added into the reactor and the temperature was raised to 80° C. for 5 hours of reaction, and then the (4-dodecylphenyl)methylamine was purified by chromatography. Add 1 mole of (4-dodecylphenyl)methylamine and 0.1 mole of potassium hydroxide into the reaction kettle and raise the temperature to 80°C, reduce the pressure to a vacuum of 0.9, stir for 30 minutes to remove volatile components, and replace with nitrogen The gas in the reactor is 4 times, and the pressure in the reactor is adjusted to 0.2MPa. The temperature of the reaction system was raised to 220° C., and 1 mole of propylene oxide was added into the reaction kettle with nitrogen at a pressure of 0.8 MPa, and the etherified product was obtained after 5 hours of reaction. Dissolve all the etherification products in absolute ethanol to prepare a 40% solution and add it to the reaction kettle, add 1.1 moles of quaternizing agent methyl chloride with...

Embodiment 2

[0314] 20 moles of 4-nonylaniline and 2 moles of methyl chloride were added into the reaction kettle and the temperature was raised to 80°C for 5 hours of reaction, and then (4-nonylphenyl)methylamine was purified by chromatography. Add 1 mole of (4-nonylphenyl)methylamine and 0.1 mole of potassium hydroxide to the reactor and raise the temperature to 80°C, reduce the pressure to a vacuum of 0.9, stir for 30 minutes to remove volatile components, and replace the reactor with nitrogen Inner gas 4 times, adjust the pressure in the reactor to 0.2MPa. The temperature of the reaction system was raised to 220° C., and 1 mole of ethylene oxide was added into the reaction kettle with nitrogen at a pressure of 0.8 MPa, and the etherification product was obtained after 5 hours of reaction. All the etherification products were dissolved in absolute ethanol to prepare a 40% solution and added to the reaction kettle, and 1.1 moles of quaternizing agent methyl chloride were added with nitro...

Embodiment 3

[0316] 20 moles of 9-octadecenylamine and 2 moles of allyl chloride were added into the reaction kettle and the temperature was raised to 80°C for 5 hours of reaction, and then the (9-octadecenyl)allylamine was purified by chromatography. Add 1 mole of (9-octadecenyl) allylamine and 0.1 mole of potassium hydroxide into the reaction kettle, heat up to 80°C and reduce the pressure to a vacuum of 0.9, stir for 30 minutes to remove volatile components, and replace the reaction with nitrogen The gas in the kettle is 4 times, and the pressure in the reactor is adjusted to 0.2MPa. Raise the temperature of the reaction system to 220°C, add 49 moles of propylene oxide into the reactor with nitrogen at a pressure of 0.8 MPa, and add 37 moles of ethylene oxide into the reactor with nitrogen at a pressure of 0.8 MPa after 5 hours of reaction. After 5 hours the etherified product was obtained. All the etherified products were dissolved in absolute ethanol to prepare a 40% solution and add...

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Abstract

The invention relates to an anionic-cationic-nonionic surfactant which is substantially represented by a following formula (I) shown in the description, a preparation method therefor and an application of the anionic-cationic-nonionic surfactant. The anionic-cationic-nonionic surfactant disclosed by the invention shows remarkably-improved interfacial activity and stability compared with surfactants in the prior art. By using the anionic-cationic-nonionic surfactant disclosed by the invention, an oil displacement composition for tertiary oil recovery, which has improved oil displacement efficiency and oil washing capability compared with oil displacement compositions in the prior art, can be prepared. The formula (I) is as shown in the description, wherein each group is as defined in the description.

Description

technical field [0001] The present invention relates to an anionic-cationic-nonionic surfactant. Specifically, the present invention relates to an anionic-cationic-nonionic surfactant that can be used in tertiary oil recovery, its manufacturing method and its application in tertiary oil recovery. Background technique [0002] With the increase of the world's energy demand, the rational development and utilization of oil has attracted great attention, and the requirements for the amount and efficiency of oil extraction are also getting higher and higher. Conventional oil recovery methods (primary and secondary methods) generally only produce 1 / 3 of the crude oil geological reserves, and about 2 / 3 of the crude oil has not been recovered. Therefore, in the case of increasingly tight energy sources, enhanced oil recovery has become a A major topic of oil exploration research. [0003] Tertiary oil recovery technology is an effective method to enhance oil recovery. Among them,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/18B01F17/44B01F17/02B01F17/22B01F17/00C09K8/584C09K23/18C09K23/00C09K23/02C09K23/22C09K23/44
Inventor 李应成顾松园张卫东鲍新宁沙鸥沈之芹杨一青翟晓东
Owner CHINA PETROLEUM & CHEM CORP
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