Flow Control Principle and Performance Analysis of T-AICD
There is limited research on Tesla valve structure in the field of water control of horizontal wells.Based on computational fluid dynamics method,the flow control principle of Tesla valve type autonomous inflow control device(T-AICD)and the influence of its structural parameters on its water control capacity were investiga-ted.The results show that T-AICD has a good limiting effect on high-density and low-viscosity fluids.T-AICD has a better water control performance when the drawdown pressure is greater than 1 MPa,and is more suitable for res-ervoirs with viscosity ranging from 50 mPa·s to 150 mPa·s.When the interstage spacing of T-AICD is 5 mm,a larger oil-water ratio(OWR)can be achieved under various viscosity conditions.When the stage number is above 4,further increasing the stage number has a smaller improvement on the OWR of low-viscosity and high-viscosity fluids.When T-AICD is a single stage,the impact of each geometric parameter on the OWR varies under different viscosity conditions,and the afflux angle and channel width have a significant impact on the OWR.The study con-clusions provide theoretical guidance for the optimization design of the new AICD.
T-AICDsimulation analysis modelwater control performanceOWRgeometric parameter
万方数据
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