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A kind of polysiloxane crude oil demulsifier and preparation method thereof

A technology of crude oil demulsifier and polysiloxane, which is applied in the direction of dehydration/demulsification by chemical methods, can solve the problems of difficult oil-water separation, increased water viscosity, complex oil-water components, etc., and achieves simple preparation process, mild conditions, The effect of high dehydration rate

Active Publication Date: 2021-06-11
广州赫尔普化工有限公司
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  • Application Information

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Problems solved by technology

However, the produced fluid will contain a certain amount of polymers and surfactants, which will increase the viscosity of the water, resulting in complex oil-water components, serious emulsification, increasing the stability of the crude oil emulsion, making oil-water separation difficult, and difficult to reach oilfield reinjection water. emission standards

Method used

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  • A kind of polysiloxane crude oil demulsifier and preparation method thereof

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Embodiment 1

[0025] The preparation method of a kind of polysiloxane crude oil demulsifier as the embodiment of the present invention, described method comprises the following steps:

[0026] (1) Mix side-chain hydrogen-containing silicone oil (PHMS), acryl polyglycol ether, and methacrylic acid in an organic solvent;

[0027] (2) heating and stirring under a nitrogen atmosphere, and adding a chloroplatinic acid catalyst, continuing to heat up, and reacting at 100°C until the solution is transparent;

[0028] (3) Cool the transparent solution obtained in step (2) to 75° C., and add N, N-bis-hexaethoxyhexadecylamine, 2-acrylamido-2-methylpropanesulfonic acid and A small amount of azobisisobutyronitrile was reacted at 75°C for 16 hours under a nitrogen atmosphere, and the organic solvent was distilled off under reduced pressure below 90°C to obtain a polysiloxane crude oil demulsifier;

[0029] The preparation method of described N, N-bis-hexaethoxy hexadecylamine comprises the following st...

Embodiment 2

[0032] As a preparation method of a polysiloxane crude oil demulsifier according to an embodiment of the present invention, the only difference between this embodiment and Embodiment 1 is that N, N-bis-hexaethoxypentadecanoate is added in step (3). Alkylamines.

Embodiment 3

[0034] As a preparation method of a polysiloxane crude oil demulsifier according to an embodiment of the present invention, the only difference between this embodiment and Embodiment 1 is that N, N-bis-hexaethoxyheptadecane is added in step (3) Alkylamines.

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Abstract

The invention provides a polysiloxane crude oil demulsifier and a preparation method thereof, the method comprising the following steps: (1) mixing side chain hydrogen-containing silicone oil, acryl polyglycol ether, and methacrylic acid in an organic solvent (2) heating and stirring under an inert gas atmosphere, and adding a chloroplatinic acid catalyst, continuing to heat up, and reacting until the solution is transparent at 90-110°C; (3) cooling the transparent solution obtained in step (2) to 60-110°C 90°C, and add N, N-bis-hexaethoxyalkylamine, 2-acrylamido-2-methylpropanesulfonic acid and a small amount of azobisisobutyronitrile, under an inert gas atmosphere at 60- React at 90°C for 15-20h, and distill off the organic solvent under reduced pressure below 90°C to obtain polysiloxane crude oil demulsifier. The crude oil demulsifier prepared by the invention has a high dehydration rate, can be degraded by microorganisms, and is environmentally friendly.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a polysiloxane crude oil demulsifier and a preparation method thereof. Background technique [0002] Polymer flooding can greatly increase the recovery rate of crude oil, and has been widely used in some oilfields in eastern China. However, the produced fluid will contain a certain amount of polymers and surfactants, which will increase the viscosity of the water, resulting in complex oil-water components, serious emulsification, increasing the stability of the crude oil emulsion, making oil-water separation difficult, and difficult to reach oilfield reinjection water. emission standards. At present, the demulsifiers studied at home and abroad are mainly non-ionic polyoxyethylene-polyoxypropylene block polymers in terms of chemical types. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies in the prior art and provide a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04C08F283/12C08F220/06C08F220/56C08G77/46
Inventor 张官云肖兴陈国伟张帆
Owner 广州赫尔普化工有限公司
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