基于管道结构滤波的套管试压测试系统设计

发布时间：2018-04-04 17:35

本文选题：压力波动　切入点：波动抑制　出处：《东北石油大学》2015年硕士论文

【摘要】：套管试压测试系统是套管应用前极为重要的测试环节,能够避免或减少油田套管泄漏事故发生,但是,在高速试压过程中,试压泵的高速运作在整个管道系统中产生了强烈的压力波动,使得套管试压测量所得数据不够准确。以滤除管道内压力波动为目的,对特定结构管道的幅值频率特性进行研究,这对实际工程和科学研究都有较高的价值。本文从管道内流体的波动现象出发,在流体波动瞬态理论的基础上,对管道内连续压力波波动情况进行了分析,建立了用于描述管道内连续压力波传递的数学模型,该模型能够清晰的描绘出管道内压力流量在时间上沿管道的分布情况,还利用传递函数和阻抗来表示管道与流体各种因素对波动的影响,分析了不同终端阻抗对波动的影响。本文分别对单一水平管道与带滤波器水平管道的频幅特性进行了分析,以模型仿真的方式显示出了单一水平管道内不同频率连续压力波的衰减情况,以及在使用滤波器后,波动在某一频率范围内的衰减情况。本文还利用实流体进行了滤波实验,根据实验采集压力数据,分别对单一水平管道与带滤波器水平管道的频幅特性进行了验证。本文将带滤波器管道应用于套管试压测试系统中,设计了相应的测量显示装置,通过对管道内压力波动进行的实时监测,以及对套管试压剪销测量结果的观察,能够发现,在滤波器的作用下,管道内的波动由剧烈变为平缓,实验表明,管道结构滤波器能够很好的对特定频率波动进行滤波,在套管试压测试系统中,使用该种滤波器能够有效的减少误差的产生。
[Abstract]:Casing pressure test system is an important test link before casing application. It can avoid or reduce casing leakage accident in oil field. However, in the process of high speed pressure test,The high speed operation of the test pump produces strong pressure fluctuation in the whole pipeline system, which makes the data obtained from the casing pressure test not accurate enough.In order to filter the pressure fluctuation in the pipeline, the amplitude and frequency characteristics of the special structural pipeline are studied, which is of great value to the practical engineering and scientific research.Based on the transient theory of fluid wave, the fluctuation of continuous pressure wave in pipeline is analyzed, and a mathematical model for describing the transmission of continuous pressure wave in pipeline is established.The model can clearly describe the distribution of pressure and flow along the pipeline in time, and use the transfer function and impedance to express the influence of various factors of pipeline and fluid on the fluctuation, and analyze the influence of different terminal impedance on the fluctuation.In this paper, the frequency amplitude characteristics of single horizontal pipeline and horizontal pipe with filter are analyzed, and the attenuation of continuous pressure waves with different frequencies in a single horizontal pipe is shown by model simulation.The attenuation of a wave within a certain frequency range.Based on the pressure data collected from the experiment, the frequency and amplitude characteristics of a single horizontal pipeline and a horizontal pipeline with a filter are verified.In this paper, the filter pipe is applied to the casing pressure test system, and the corresponding measuring and displaying device is designed. Through the real-time monitoring of the pressure fluctuation in the pipe and the observation of the measurement results of the casing pressure test and shear pin, it can be found that,Under the action of the filter, the fluctuation in the pipeline changes from violent to gentle. The experiment shows that the pipeline structure filter can filter the specific frequency fluctuation well, and in the casing pressure test system,The use of this filter can effectively reduce the generation of errors.
【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】：TE931.2

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