低产液水平井油水两相流流型仿真与传感技术

发布时间：2018-03-31 15:23

本文选题：水平油水两相流　切入点：流型数值模拟　出处：《东北石油大学》2015年硕士论文

【摘要】：产液剖面测井技术是水平井测井开发配套的重要技术之一,在水平井产液剖面测井中起着非常重要的作用。在指导压裂和堵水以及优化注采方案等方面的作业都需要产业剖面测井的资料提供相关的依据。且水平井产液剖面测井资料与垂直井相比更加重要也更有价值。近年来随着水平井的规模的不断扩大,相关问题的不断出现,相关产液剖面测井资料的不完备对于水平井的开发的影响已经日益突出。本课题所研究的模块化水平测井系统利用成熟的油管输送工艺进行输送,能够准确的到达目的层段,避免了常用牵引器在出砂过多的井内爬行困难的问题。流量的测量采用涡轮流量计和电磁流量计相结合的方式,电磁流量计有效拟补了返砂现象对涡轮流量计的影响。含水率的测量则采用了阻抗含水率计和筒状电容含水率计相结合的方式,阻抗式含水率计在水相含率较低,即水相无法构成连续相时,会失去响应,结合筒状电容含水率计的测量就可以有效的扩大测量范围。根据所要研究的内容分别设计和建立了三种不同尺寸的仿真模型,并对模型进行了合理的网格划分。针对建立的模型利用Fluent仿真软件在不同结构、不同初始条件、不同流量以及含水率条件下的进行油水两相流在集流条件下的仿真计算。通过对仿真结果的对比分析,得出流量、含水率以及管道长度对流体在流动状态,界面高度以及达到稳定状态所需要的时间的影响,并进行了实验验证。仿真结果为模块化低产液水平井生产测井技术提供数据支持和技术指导。
[Abstract]:Fluid production profile logging technology is one of the important techniques for horizontal well logging development. Production profile logging plays a very important role in horizontal well logging. In guiding fracturing and water shutoff and optimizing injection and production plan, the relevant data of industrial profile logging are needed. Surface logging data are more important and valuable than vertical wells. In recent years, as the scale of horizontal wells continues to expand, With the emergence of related problems, the influence of incomplete logging data on horizontal well development has become increasingly prominent. The modularized horizontal logging system studied in this paper uses mature tubing transportation technology for transportation. It can reach the target layer accurately and avoid the difficulty of crawling in the well with the usual tractor. The flow rate is measured by the combination of turbine Flowmeter and electromagnetic Flowmeter. The effect of sand return phenomenon on turbine Flowmeter is effectively supplemented by electromagnetic Flowmeter. The water content is measured by the combination of impedance moisture content meter and tubular capacitance moisture meter, and the impedance moisture content meter has lower water content in water phase. That is, when the water phase can not form a continuous phase, it will lose its response, and the measurement range can be effectively expanded by combining the measurement with a tubular capacitance moisture meter. Three simulation models with different sizes are designed and built according to the contents of the study. According to the model, the Fluent simulation software is used in different structure and different initial conditions. The simulation calculation of oil-water two-phase flow under the condition of different flow rate and water content is carried out under the condition of gathering flow. Through the comparison and analysis of the simulation results, it is concluded that the flow rate, water cut and pipeline length have effect on the flow state of the fluid. The effect of interface height and the time required to achieve stable state is verified by experiments. The simulation results provide data support and technical guidance for modularized production logging technology of low liquid horizontal wells.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE31

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