自适应流入控制装置的稳油控水性能

Oil stabilization and water control performance of AICD

为了解决长水平井常见的底水脊进问题,延长开采寿命,提高经济效益,采用自适应流入控制装置(AICD)来进行研究.基于流体仿真软件STAR-CCM+对AICD的稳油控水性能进行了仿真分析,采用水油压降比作为衡量AICD稳油控水能力的指标.仿真结果表明:当AICD的入口流量保持恒定时,其水油压降比随着入口数目的增多而增大;当AICD的入口数目一定时,其水油压降比随着流槽宽度的增加先增大后减小;最佳的AICD结构是进口数目为2个,流槽宽度为0.75 mm,该结构的水油压降比可超过5,且对流量、黏度、密度敏感性弱,对环境的适应性强.

To solve the common problem of bottom water ridges in long horizontal wells for prolonging mining life and improving economic benefits,the adaptive inflow control device(AICD)was used.Based on the fluid simulation software of STAR-CCM+,the oil stabilization and water control performance of AICD was simulated and analyzed.The water-oil pressure drop ratio was used as indicator to measure the water control capacity of AICD.The simulation results show that when the inlet flow of AICD is constant,the water-oil pressure drop ratio is increased with the increasing of inlet number.When the inlet number of AICD is constant,the water-oil pressure drop ratio is decreased after increasing with the increasing of runner width.The optimal AICD structure is with 2 inlets,and the runner width is 0.75 mm.The water-oil pressure drop ratio of the structure can exceed 5,and the sensitivity of the structure to flow,viscosity and density is weak with strongly environmental adaptability.