Open Journal of Yangtze Oil and Gas
Vol.01 No.01(2016), Article ID:65666,1 pages
10.4236/ojogas.2016.11002
Research on Molecular Diffusion Coefficient of Gas-Oil System
Anping Ye1, Xiaoying Shen2, Ping Guo1, Shaoping Wang3, Zhongzhao Cheng4
1State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China
2State Intellectual Property Office, Beijing, China
3No.2 Oil Production Plant, Petro China Changqing Oilfield Company, Qingyang, China
4Xi’an Changqing Technology & Engineering Company Ltd., Xi’an, China
Published on Hans Journal of Chemical Engineering and Technology, Vol. 3, No. 2, 2013; available on
http://www.hanspub.org/journal/PaperInformation.aspx?paperID=9601
ABSTRACT
During the process of gas injection flooding, when the gas comes into contact with oil, the mass- transfer phenomenon occurs. This changes the properties of the crude oil, improves the flow capacity, and thus enhances the oil recovery. Molecular diffusion coefficient is an important parameter to describe the mass-transfer rate of gas-oil system. At present, molecular diffusion coefficient is usually tested via indirect methods. There are 2 key points that should be noticed when testing this parameter. Firstly, select proper experimental methods. Secondly, use accurate model to describe the experimental data. In this research, the authors describe the researches on the experiment methods for determining diffusion coefficient for gas-oil system, the experiments and models on pressure decay, and the influencing factors that determine diffusion coefficient.
Keywords:
Oil, Mass Transfer, Molecule Diffusion Coefficient
