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Pickering emulsion for heavy oil reservoirs and preparation method thereof

A technology for heavy oil reservoirs and emulsions, applied in the field of Pickering emulsions, can solve the problems of expensive emulsions and unsatisfactory emulsion effects, and achieve the effects of enhanced oil recovery, high stability, and high viscosity retention

Inactive Publication Date: 2019-06-07
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current production of emulsions is relatively expensive, and many of them are foreign emulsions, and the effects of cheap emulsions are not very ideal.

Method used

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Examples

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Embodiment Construction

[0014] Below in conjunction with specific implementation example, the present invention is described in detail; A kind of Pickering emulsion that is used for heavy oil reservoir, comprises nano silicon dioxide particle and water, binding agent and contains mineral compound oil, wherein silicon dioxide particle and water The ratio of binder to mineral oil is 1:10, and the ratio of binder to mineral oil is 1:15.

[0015] As a preference: the particle size of the silicon dioxide particles is 5-9 nm.

[0016] As a preference: the mass content of the silicon dioxide is 20%.

[0017] Preferably: the adhesive is a combination of at least two of vinyl acetate resin, acrylic resin, and chlorinated rubber.

[0018] The preparation method of the Pickering emulsion that is used for heavy oil reservoir of the present invention, comprises the following steps:

[0019] (1) Add the silicon dioxide particles into the water and heat to fully melt, and stand still for 1-2H after melting;

[0...

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PUM

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Abstract

The invention discloses a Pickering emulsion for heavy oil reservoirs. The Pickering emulsion comprises nano silicon dioxide particles, water, an adhesive, and mineral oil; wherein the ratio of silicon dioxide particles to water is 1:10, and the ratio of the adhesive to mineral oil is 1:15. The production process is simple, the operation is convenient, no toxic and harmful solvent is used, moreover, the production cost is low, the product purity is high, and the preparation method is suitable for industrial production.

Description

Technical field: [0001] The invention relates to Pickering emulsions of heavy oil reservoirs, belonging to the technical field of organic matter production. Background technique [0002] The viscosity of flowable heavy oil is usually as high as thousands to tens of thousands of mPa·s. Due to the large difference in the mobility ratio of water and heavy oil, it is easy to cause water fingering, resulting in ineffective displacement and low recovery. Exxon Company first proposed the Pickering emulsion oil recovery method, and was used to develop heavy oil with a viscosity in the range of 20-3000mPa·s. Indoor and field tests have proved that the Pickering emulsion can be injected for a long time, and can remain stable during the flow process, significantly improving the recovery factor. Son et al. also used Pickering emulsion for oil displacement, and at the same time proposed that the alternating injection of emulsion and water has a better oil displacement effect. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C09K8/60
Inventor 龙运前黄小荷宋付权莫流业冷哲陈立桥于晓明余璇张挥球
Owner ZHEJIANG OCEAN UNIV
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