水平井AICD控水阀油水过流特性仿真研究  

Simulation Study on Oil Water Overflow Characteristics of AICD Water Control Valve for Horizontal Wells

作　　者：杜卫刚 孟繁琪 季鹏 董祥伟[2] DU Wei-gang;MENG Fan-qi;JI Peng;DONG Xiang-wei(Tianjin Branch,CNPC Offshore Engineering Company Limited,Tianjin 300451,China;College of Electrical and Mechanical Engineering,China University of Petroleum(Huadong),Qingdao Shandong 266580,China;College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing,102249,China)

机构地区：[1]中国石油集团海洋工程有限公司天津分公司,天津300451 [2]中国石油大学(华东)机电工程学院,山东青岛266580 [3]中国石油大学(北京)石油工程学院,北京102249

出　　处：《计算机仿真》2024年第8期68-76,117,共10页Computer Simulation

基　　金：中国石油集团科研攻关项目(202102-0101)。

摘　　要：水平井石油开采过程中容易出现底水突进现象,导致含水率迅速上升,开采周期缩短,严重影响油田采收率。针对一种新型的流道式自动流入控水装置(简称FD-AICD),借助于计算流体力学方法对装置的阻水过油流动行为进行研究,通过多参数影响分析定量评估阀对水平井稳油控水的作用效果。通过实验和数值仿真得到FD-AICD装置对于不同粘性过流液的压降-流量关系,验证数值仿真模型的可靠性。由数值模拟分析内部流道的流动机理,获得水和过油的过流流场特性,通过流体敏感性分析,总结结构参数对FD-AICD控水性能的影响。结果表明:过流压降随流量的增加而增加,过水压降高于过油压降;水相主要通过切向主流道流入环形腔室做高速旋转流动,油相则主要通过径向分支流道流入环形腔室,不经旋转直接流向出口;流量、粘度对压降的影响程度要高于密度;流场深度、出口直径对过流压降有显著影响,而内外圆环挡板角度差的影响不明显。Bottom water breakthrough is a common occurrence during horizontal oil well exploitation.Once the water content of the horizontal oil well rapidly rises,the oil reservoir's water-free operation period is considerably decreased,severely reducing the horizontal oil well's exploitation efficiency.Fluidic Diode Type Automatic Inflow Control Device(FD-AICD)may stabilize oil and control water while alleviate the phenomena of bottom water breakthrough.However,FD-AICD cannot meet all the ideal water control requirements of oil wells in current application process.In this paper,the pressure loss-flow relationship of FD-AICD for liquids with different physical properties was obtained through experimental research and numerical simulation,and the reliability of the numerical simulation model was verified.The flow field characteristics of FD-AICD through water and oil were obtained by computational fluid dynamics method,the fluid sensitivity analysis was carried out,and the influence of structural parameters on the water control performance of FD-AICD was studied.The results indicate that:the pressure loss of the fluid flowing through the FDAICD increases with the increase of the flow rate,and the pressure loss of the water flow is higher than that of the oil flow;The water flow mainly flows into the annular chamber through the tangential main channel for high-speed rotating flow,while the oil flow mainly flows into the annular chamber through the radial branch flow channel,and directly flows to the outlet without rotation;The influence of flow rate and viscosity on the pressure loss is higher than that of fluid density;The channel thickness and the outlet hole diameter have a significant effect on the pressure loss of the fluid flowing through the FD-AICD,and the effect of the angle difference between the inner and outer ring baffles is notobvious.

关 键 词：水平井控水 过流特性 控水原理 压力损失 

分 类 号：TE319[石油与天然气工程—油气田开发工程]