Structural Design And Experimental Research On Degas Hydrocyclone

The majority of oil fields in the present world which use the water flooding development are facing to further enhanced oil recovery and the water resources deficient question, the domestic and foreign recently developed the development and the application of the carbon dioxide flooding to enhance the recovery ratio (EOR) technology. This technology is not only suitable for the conventional oil deposit, especially to the low permeability and the especial low permeability, may raise the crude oil recovery ratio obviously.The carbon dioxide dissolves in the crude oil produced fluid, not only creates the corrosion in the extraction process for the well inner pipe string, moreover similarly will create the huge corrosion to the ground handling equipment. Therefore the effective degassing, gets rid of the carbon dioxide dissolved gas in the produced fluid is important measure to guarantee following handling equipment security. This paper through degas hydrocyclone optimization design, develops a set of produced fluid degassing equipment, serves for the oil field high efficiency safety in production..The paper according to flow characteristic of the bubble flow, combining the mixing flow mechanism in hydrocyclone, unifies mixed phase flow mechanism in the hydrocyclone, uses computational fluid mechanics software, establishes the degas hydrocyclone model, and carries on the analysis to its internal flow field. The numerical simulation first carries on the simulation to the cylindrical degas hydrocyclone and the single cone degas hydrocyclone. Through researching the flowing rule of the gas-liquid two-phase flow, further grasped the separation mechanisms of the gas-liquid two-phase flow in the degas hydrocyclone. The computed result indicated that these two kinds of hydrocyclone separation efficiency are not very ideal.In view of this condition, proposes the twin cones structure and has carried on the analysis, has understood its internal pressure field and the velocity field distributed rule, and the change cone angle to the pressure field and the velocity field. Through the twin cones degas hydrocyclone simulation, obtains the structure parameter which has the best separation effect.Through conducts the experimental study to the optimum structure hydrocyclone, knew the operating parameter change to the hydrocyclone interior flow field and the separation efficiency. Simultaneously, has confirmed the numerical simulation conclusion rationality...