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Wang, Chunsheng
- The Numerical Simulation Study of the Inner Flow Field of the Screw Pump
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Authors
Affiliations
1 College of Earth Sciences, Northeast Petroleum University, Daqing, Heilongjiang, 163318., CN
2 Shenyang Engineering Department of Liao He Oilfield, ShenYang, Liaoning, 110316., CN
3 College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318., CN
1 College of Earth Sciences, Northeast Petroleum University, Daqing, Heilongjiang, 163318., CN
2 Shenyang Engineering Department of Liao He Oilfield, ShenYang, Liaoning, 110316., CN
3 College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318., CN
Source
International Journal of Petroleum Science and Technology, Vol 7, No 1 (2013), Pagination: 45-53Abstract
In SolidWorks software, established stator and rotor model of screw pump, and succeeded in assembly. Established the dynamic grid of the description of the rotor movement by using the function of UDF provided by Fluent software; builded the dynamic numerical simulation of internal unsteady flow of screw pump by using Fluent software solver, and obtained velocity distribution, pressure distribution and stress field of the flow field. Analized the effect of the fluid viscosity, rotor speed and screw pump eccentricity convection to the flow field. The results show that when the rotor leaves both ends of the stator, flow field in the pump always appears a very clear vortex; Viscosity affected only the value of velocity, pressure and stress, while it has little effect to the distribution laws. The speed of the rotor has a great influence to the velocity distribution, and the velocity of the fluid increases with rotor speed increases. In addition, the eccentricity of the PCP has a big influence on the flow field, and flow field parameters increases with the eccentricity increases, which indicates that the eccentricity has a great influence on the stability of the screw pump.Keywords
Screw Pump, 3D Model, UDF, The Numerical Simulation
References
- Cao gang.Dynamics mechanism of screw pump and three dimensional numerical simulation technology research [D]. University of science and technology of China, 2009 (6).
- Performance research and application of screw pump [D]. Northeast petroleum university, 2007 (5).
- Ground drive screw pump well rod tube and pip ring spiral flow numerical simulation [J]. Journal of oil. 2007, 28(2).
- Analysis of down Resistance of the Measuring and Adjusting Apparatus in Lubricator of Oilfield Injector
Abstract Views :416 |
PDF Views:0
Authors
Affiliations
1 College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318., CN
1 College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318., CN
Source
International Journal of Petroleum Science and Technology, Vol 7, No 1 (2013), Pagination: 91-98Abstract
In the later period of water distribution to increase output of oilfield, it is difficult for the measuring and adjusting apparatus going down in the lubricator when the wellhead pressure reaches to some value, in separate zone injection testing. For this reason, we analyzed its reasons through theoretical derivation and experiments. According to the basic theory of statics of fluid mechanics, we derive and set the mathematical model among the static pressure differential of measuring and adjusting apparatus and the main factors such as wellhead pressure, cable diameter, etc. Indoor experiments and field testing jointly, we set the relationship of wellhead pressure affect the friction between the packing and the cables. The result: down resistance of measuring and adjusting apparatus in lubricator is linear with wellhead pressure and it is square with cable diameter, friction force between the packing and the cables have no big change while the wellhead pressure changes. Through the study of firing resistance, we can calculate the additional weight needed accurately when measuring and adjusting apparatus in lubricator fire and down, and provide theoretical basis for optimizing running parameters and heightening testing efficiency.Keywords
Injector, Lubricator, Measuring and Adjusting Apparatus, Down Resistance, Additional WeightReferences
- Jing, D.J., etc. 2011. Analysis of Stratified Injectors and Strategy Influence the Testing and Adjusting. Energy and Environment. 11: 138~139.
- Jiang, G.B., Li, C.Y., Zhang, G.Y., etc. 2011. Testing and Adjusting Technology of the Integration of Injectors and Hollow Water Injection Allocators [J]. Oil Drilling & Production Technology. 33(4) : 99~101.
- Jiang, G.Y., Zhou, L. 2009. The Common Problems and Approaches of Injector Testing and Adjusting In Jiangsu Oilfield [J]. West-china Exploration Engineering. 7 : 95~96.
- Gu, L.H., Lu, Y., Gu, J.Q., etc. 2008. Analysis and Strategies of the Difficulties of Injector Testing and Adjusting[J]. Drilling & Production Technology. 31(3) : 131~133.
- Yang, S.R.2006. Engineering Fluid Mechanics [M]. Beijing, Petroleum Industry Press, 22-30.