同心配水器及其配套系统的设计及应用研究

发布时间：2018-08-18 08:36

【摘要】：目前,油田注水井普遍存在井斜大、沾污结垢以及层间干扰等严重问题,而现有常规配水系统往往很难真正实现精细化分层配水作业,其原因在于:常规配水系统中的配水器水嘴安装在管柱的一侧(偏心配水器),且配水器水嘴开度在井下是不可调的,为此,本论文设计研发了一种水嘴安装于配水器中心且能够在井下完成水嘴开度调节的配水系统—同心配水系统。文中对同心配水系统进行了系统总体方案设计;对系统中的核心部件—同心配水器进行了3D结构设计;在确定了其具体结构后,运用运动学理论及ADAMS运动学仿真软件对其螺纹传动机构进行了运动分析,得到了在特定转速下的中心筒的运动规律;利用有限元理论与ANSYS有限元分析软件对其中心筒调节卡槽结构进行力学分析,得到了卡槽在驱动扭矩下的变形量、等效应力、等效应变的变化范围;运用流体力学理论及FLUENT流场分析软件对其水嘴出流口流场进行了分析,得到了在模拟工况下的中心筒选升高度、注水量与进出口压差、水嘴局部阻力系数之间的关系;完成了对同心配水系统配套设备(封隔器以及测调仪、TPC控制器等)的选型。本文通过对同心配水器传动螺纹机构的运动学、力学和理论分析与模拟仿真分析,和对其水嘴出流口流场的理论与仿真分析,充分验证了同心配水器结构设计的合理性与正确性,以及其精细化注水功能的可实现性。利用本同心配水系统对地层进行分层注水,可以提高注入水源的利用率,减少注水作业的人工成本,提高了油田开发的综合效益。
[Abstract]:At present, there are many serious problems in oilfield water injection wells, such as large well deviation, fouling and scaling, interlayer interference, etc. However, the existing conventional water distribution system is often difficult to realize fine and stratified water distribution operation. The reason is that the nozzle of the water distributor in the conventional water distribution system is installed on one side of the pipe string (eccentric water distributor), and the opening of the nozzle of the water distributor is not adjustable in the downhole. In this paper, a kind of water distribution system-concentric water distribution system, which is installed in the center of the water distributor and can adjust the opening of the nozzle in the downhole, is designed and developed. In this paper, the overall scheme of the concentric water distribution system is designed, and the 3D structure of the concentric water distributor, the core component of the system, is designed. The kinematics theory and ADAMS kinematics simulation software are used to analyze the motion of the thread drive mechanism, and the motion law of the center cylinder under the specific speed is obtained. By using finite element theory and ANSYS finite element analysis software, the deformation, equivalent stress and equivalent strain range of the slot under driving torque are obtained. The flow field at the outlet of the nozzle is analyzed by using the fluid mechanics theory and the FLUENT software. The relationship among the selected height of the central cylinder, the water injection volume and the inlet and outlet pressure difference, and the local resistance coefficient of the nozzle is obtained under the simulated working condition. The equipment of concentric water distribution system (Packer, TPC controller and so on) has been selected. In this paper, the kinematics, mechanics, theoretical analysis and simulation analysis of the thread mechanism of concentric water dispenser drive, as well as the theoretical and simulation analysis of the flow field at the outlet of its nozzle are presented. The rationality and correctness of the structure design of concentric water dispenser and the realizability of its fine water injection function are fully verified. Using this concentric water distribution system for stratified water injection, the utilization rate of injected water source can be increased, the labor cost of water injection operation can be reduced, and the comprehensive benefit of oilfield development can be improved.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE934.1

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