Journal of Petroleum & Environmental Biotechnology

Study on performance and application of compound viscosity reducer aim at ultra-heavy oil

World Congress on Petroleum and Refinery

July 21-22, 2016 Brisbane, Australia

Guo Jixiang

China University of Petroleum, China

Posters & Accepted Abstracts: J Pet Environ Biotechnol

Abstract:

In view of the problem of mining, ultra-heavy oil is very difficult. A new compound viscosity reducer SDG-2 is discussed in this paper. Emulsification effect, droplet size distributions, interfacial tension, emulsion morphology and field test were investigated to better show the advantages of compound viscosity reducer compared with oil-soluble and water-soluble viscosity reducer by FM200 high speed homogenizer, interfacial tensiometer, interfacial rheometer and optical microscopy and so on. The results showed that the SDG-2 can emulsify ultra-heavy oil (1.81�?105 mPa�?�s) which cannot be emulsified by commercial water-soluble viscosity reducers, the average droplet size of the stable emulsion was 2.415 μm and demulsification was not influenced. Much lower oil-water interfacial tension with SDG-2 than that with oil-soluble viscosity at the same concentration. And the research results showed that the SDG-2 was more effective than commercial oil-soluble viscosity reducer. The rate of viscosity reduction can reach 99% at 50 0C and 95% at 90o with SDG-2 while 95.6% at 50 0C and 90.3% at 50o with oil-soluble viscosity reducer. In addition, it also has characteristic of broad applicability which is suitable for ultra-heavy oil viscosity ranged from 2.0�?104 mPa�?�s to 1.0�?105 mPa�?�s. Field tests of the newly developed compound viscosity reducer was carried out in Tahe oilfiled in China, and the results showed that 66.6% less light oil was needed to dilute the heavy oil to achieve the needed viscosity and enhance the ultra-heavy oil recovery rate by 22.5%. We have interest to see its remarkable economic and social benefits.

Biography :

Guo Jixiang has completed his PhD from China University of Petroleum, Beijing. She is a Professor and Doctoral supervisor major in enhancing oil recovery. She has presided over several China's major scientific research projects. She has published more than 40 papers in reputed journals and has been serving as an Editorial Board Member.

Email: guojx002@163.com