Zhang Jun, Wen Jianlong, Wang Junfeng, Luo Tiqian. INVESTIGATION ON THE FRICTIONAL RESISTANCE OF OIL-WATER EMULSIONS FLOW FOR SURFACE DRIVEN SCREW PUMP SYSTEM[J]. Oil Drilling & Production Technology, 2003, 25(4): 41-44. DOI: 10.3969/j.issn.1000-7393.2003.04.015
Citation: Zhang Jun, Wen Jianlong, Wang Junfeng, Luo Tiqian. INVESTIGATION ON THE FRICTIONAL RESISTANCE OF OIL-WATER EMULSIONS FLOW FOR SURFACE DRIVEN SCREW PUMP SYSTEM[J]. Oil Drilling & Production Technology, 2003, 25(4): 41-44. DOI: 10.3969/j.issn.1000-7393.2003.04.015
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INVESTIGATION ON THE FRICTIONAL RESISTANCE OF OIL-WATER EMULSIONS FLOW FOR SURFACE DRIVEN SCREW PUMP SYSTEM

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    • Abstract
  • An overall investigation on the pressure drop characteristics of oil-water emulsions for surface driven screw pump system is perfonned.The phenomenon of phase inversion between oil-in-water(O/W) emulsion and water-in-oil(W/O) emulsion is experimentally studied by measuring frictional pressure drop.The effects of the rotation of sucker rod on axial frictional pressure gradients of O/W and W/O emulsions are analyzed.The experimental and analytical results show that the water volume fraction at which phase inversion occurs is about 0.41-0.43.The effect of rotation on frictional pressure drop for W/O emulsion seems to be greater than that for O/W emulsion.The correlations on frictional resistance in different flow patterns for power law fluid flow through the annulus are obtained by means of experimental data processing.These research results possess a certain reference value to the design and application of the screw pump.
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