Flow Field Analyses And Experimental Study On A Degassing And Desanding Hydrocyclone

Nowadays most oilfields in China have stepped into a mid to late stage for exploitation.Produced fluid contains a large amount of impurities such as associated gas,sand,and mud.And these elements can make oil field ground processing process is more complicated,not only increase the cost of oilfield production,also to the stable operation of the production safety and equipment also has a great harm.Utilization of a three-phase separation technology can achieve integrative degassing and desanding treatment for produced fluid,which will simplified the technical process for produced-fluid treatment,and improve the effect of produced-fluid treatment.Research on a new type of axial degassing desanding three-phase hydrocyclone separator,using numerical simulation analysis software Fluent,the whole flow field numerical simulation of hydrocyclone,through to the cyclone velocity field,pressure field and the phase volume fraction distribution Fv variable structure parameter of the contrast analysis,first of all,the main structure of the hydrocyclone(overflow pipe diameter and into length,vortex cavity length,cone length,spiral groove Angle,the groove depth and leaf number)simulation,optimization of the best selling gas desanding hydrocyclone structure parameters,reasonable degassing desand hydrocyclone separator structure model,and processing of experimental prototype,experiment research.Secondly the best structural parameters of model degassing desand hydrocyclone,using Fluent software to change operating parameters simulation analysis,and taking appropriate range gradually and one by one,the change of inlet capacity and split ratio(overflow,lateral).According to the characteristics of parameters on the flow field of cyclone and degassing desanding separation performance,the influence of best finalized hydrocyclone flow and split ratio(overflow,lateral).Degassing desanding hydrocyclone of experimental research mainly by changing the operating parameters,analysis of inlet flow rate and split ratio(overflow,lateral)influence on separation efficiency and pressure drop,and compare its results with the results of numerical simulation,the comparison shows that degassing desanding swirl separator the rationality of the structure.This work provides a theoretical basis and reference for further research of degassing and desanding three-phase hydrocyclone,and provides a beneficial reference for efficient degassing desanding technology.