Petrochina Company Limited

China University of Petroleum

Kms Oil Field Chemicals & Technical Services Ltd.

Zhong Shi Da Engineering Research Center Co. Ltd.

Xiuhui Li

Yuan Yuan Li

Fujian Zhou

Jie Zuo

Cuihong Zhou

Zhao Luo

Jiaxin Sun

Jiangwen Xu

Xugang Wang

Erdong Yao

Xiongfei Liu

A nano-emulsion composition having a small particle size and ultra-low concentration and a preparation method thereof is disclosed. The raw materials of the composition comprise, in terms of percentage by weight, 0.002% to 0.2% of a polymer-containing homogeneous microemulsion, water, and 99.998% to 99.8% of an organic salt solution or inorganic salt solution. The composition is prepared by diluting a polymer-containing homogeneous microemulsion with water or a salt solution. The polymer-containing homogeneous microemulsion is formed by mixing the following raw materials, in terms of percentage by weight: 8% to 40% of a surfactant, 0.5% to 10% of a polymer, 10% to 30% of an alcohol, 3% to 30% of an oil, 0% to 20% of a salt, and balance of water. The composition of the invention is low in concentration, low in cost, narrow in particle size distribution, good in stability, simple in preparation, and convenient for storage and use.

Composition of nano-emulsion having small particle size and ultra-low concentration and a preparation method thereof

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Beijing, China

Xiuhui Li