考虑流体和扶正器的固井套管柱系统振动响应分析

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (10) : 180-190.

振动理论与交叉研究

考虑流体和扶正器的固井套管柱系统振动响应分析

王立琰1，尹宜勇*1，齐林山1，于永金2，夏修建2，胡原农2，刘卫雄1

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Vibration response analysis of a cementing casing string system considering the effects of fluid and centralizer

WANG Liyan1,YIN Yiyong*1,QI Linshan1,YU Yongjin2,XIA Xiujian2,HU Yuannong2,LIU Weixiong1

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摘要

复杂的井下环境导致振动工况下固井套管柱系统振动响应异常复杂。为揭示固井套管柱系统动力学行为规律，该研究首先考虑钻井液、水泥浆和扶正器等因素，建立固井套管柱系统动力学模型并运用分离变量法和模态叠加法对系统的振动特性和振动位移响应进行求解。在此基础上，通过模态试验和振动响应试验验证模型的正确性。最后，研究套管柱参数、流体参数和扶正器刚度等对固井套管柱系统振动特性和振动位移响应的影响机理，分析振动在套管柱上的传播规律。结果表明：流体密度和套管柱材料参数对振动特性影响显著。套管柱尺寸参数、阻尼比和扶正器刚度对系统振动特性和振动位移响应均显著性影响。在满足固井工艺要求的前提下，选取小直径薄壁套管，粘滞系数较小的水泥浆和低刚度的扶正器将有益于提高振动响应幅值。在振动固井作业时，激励频率的选取应该综合考虑振动响应幅值和振动分布。该研究为精确求解固井套管柱系振动响应和振动固井装备参数设计及应用提供了理论依据和技术支撑。

Abstract

Due to the complex downhole environment, the cementing casing system’s response under vibration conditions is very complicated. To reveal the dynamic behavior of the cementing casing system, considering factors such as fluid and centralizer, a dynamic model of the cementing casing system was established firstly. And the vibration characteristics and vibration displacement response of the system were solved by using the separation variable and modal superposition method. On this basis, the correctness of the model was verified by modal tests and vibration response tests. Finally, the influence mechanism of casing string parameters, fluid parameters, and centralizer stiffness on the vibration characteristics and vibration displacement response of the system was studied, and the propagation law of vibration on the casing string was analyzed. The results indicate that the fluid density and casing material parameters have a significant impact on the vibration characteristics. The size parameters of the casing string, damping ratio, and stiffness of the stabilizer have a significant impact on the vibration characteristics and displacement response of the system. On the premise of meeting the requirements of cementing technology, selecting small-diameter thin-walled casing, cement slurry with low viscosity coefficient, and low stiffness stabilizer will be beneficial for improving the amplitude of vibration displacement response. During the cementing operation, the selection of excitation frequency should comprehensively consider the amplitude and distribution of vibration response. The study provides theoretical basis for accurately solving the vibration characteristics of the cementing casing system and the design of vibration cementing equipment parameters.

导出引用

王立琰1, 尹宜勇1, 齐林山1, 于永金2, 夏修建2, 胡原农2, 刘卫雄1. 考虑流体和扶正器的固井套管柱系统振动响应分析[J]. 振动与冲击, 2025, 44(10): 180-190

WANG Liyan1, YIN Yiyong1, QI Linshan1, YU Yongjin2, XIA Xiujian2, HU Yuannong2, LIU Weixiong1. Vibration response analysis of a cementing casing string system considering the effects of fluid and centralizer[J]. Journal of Vibration and Shock, 2025, 44(10): 180-190

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