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Numerical simulation of flow Held in downhole hydrocyclone oil-gas separator
ZHAO Huan-qing1,LI Zeng-liang2,SUN Hao-yu3
(1.Scientyic and Technological Company in China University of Petroleurn Dongying 257061,bhandong Province,Ckina;2. College of Mechanical and Electronic Engineering in China University of Petroleum f Dongying 257061, Shandong Province, China;3. Drilling Technology Research Institute,Shengli Petroleum Admmistraswri Bureau, Dongying 257017,Shandong Province,China)
Abstract:
As the efficiency of the current oil-gas separators is very low, and to improve the efficiency of downhole multiphase pump or electrical submersible pumping unit in high gas-content wells, the numerical simulation was studied on the two-phase flow in downhole hydpocyclone oil-gas separator. Meanwhile,the Reynolds stress model was chosen as turbulence model and the algebraic slip model was chosen as multiphase flow model. With the numerical calculation,the two phase media equocon-centration distribution map and die axial velocity ventogrph were obtained and proved to completely accord with the flow field distribution in cyckwie- A contrast between the numerical simulated result and the result of pre-industrial prototype which has the same structure was carried on. The results show that the optimized hydrocyclone oil-gas separator not only runs weU but also possesses good separating perfonnance,and can satisfy the requirement of high flux and high GOR wells.
Key words:  oil-gas separation  hydiocyclonei separation efficiency  numerical simulation