电力振动器激振作用下的套管串振动特性
发布时间：2019-03-28 17:29
【摘要】：振动固井是一种能够明显提高固井界面胶结强度的新方法,但推广使用该方法则需要解决水泥浆候凝阶段如何使固井管柱产生井下径向振动的问题。为此,研制了电力振动器。该振动器由高温电机振动组件把电能转化为机械能,电机振动组件通过输出轴带动偏心块旋转形成激振源,对套管串底部产生一个沿轴向方向旋转的激振力;然后运用主坐标分析法,分析激振力在直井套管串产生的振动特性,得出电力振动器振动对套管串产生的动响应模型;最后以某井井身结构设计为依据,分析了不同套管串长度、不同激振力和不同振动频率对套管串最下端的振动幅值的影响。研究结果表明:(1)套管串长度与套管串最下端的振动幅值呈反比关系;(2)激振力与套管串最下端的振动幅值呈正比关系;(3)振动频率的平方与套管串最下端的振动幅值呈反比关系。该研究成果可为在不同井深和不同振幅需求的固井现场应用振动固井技术提供理论支撑。
[Abstract]:Vibration cementing is a new method which can obviously improve the cementing strength of the cementing interface. To this end, a power vibrator was developed. The vibrator is driven by a high-temperature motor vibration component to convert electric energy into mechanical energy, the motor vibration component drives the eccentric block to rotate to form a shock source through an output shaft, an exciting force that rotates in the axial direction is generated on the bottom of the casing string, and then a main coordinate analysis method is used, By analyzing the vibration characteristics of the exciting force in the string of the straight shaft, the dynamic response model of the vibration of the power vibrator to the casing string is obtained, and the length of the different casing string is analyzed based on the structure design of a well shaft. The influence of different excitation force and different vibration frequency on the vibration amplitude at the lowest end of the casing string. The results show that (1) the length of the casing string is inversely proportional to the vibration amplitude at the lowest end of the casing string; (2) the excitation force is proportional to the vibration amplitude at the lowest end of the casing string; and (3) the square of the vibration frequency is inversely proportional to the vibration amplitude at the lowest end of the casing string. The research results can provide theoretical support for the application of vibration cementing technology in well cementing field with different well depth and different amplitude requirements.
【作者单位】： 中国石油集团钻井工程技术研究院;中国农业大学工学院;
【基金】：中国石油天然气集团公司科学研究与技术开发课题“高效辅助破岩及完井试油关键工具研制”(编号:2016B-4002)
【分类号】：TE256
本文编号：2449080
[Abstract]:Vibration cementing is a new method which can obviously improve the cementing strength of the cementing interface. To this end, a power vibrator was developed. The vibrator is driven by a high-temperature motor vibration component to convert electric energy into mechanical energy, the motor vibration component drives the eccentric block to rotate to form a shock source through an output shaft, an exciting force that rotates in the axial direction is generated on the bottom of the casing string, and then a main coordinate analysis method is used, By analyzing the vibration characteristics of the exciting force in the string of the straight shaft, the dynamic response model of the vibration of the power vibrator to the casing string is obtained, and the length of the different casing string is analyzed based on the structure design of a well shaft. The influence of different excitation force and different vibration frequency on the vibration amplitude at the lowest end of the casing string. The results show that (1) the length of the casing string is inversely proportional to the vibration amplitude at the lowest end of the casing string; (2) the excitation force is proportional to the vibration amplitude at the lowest end of the casing string; and (3) the square of the vibration frequency is inversely proportional to the vibration amplitude at the lowest end of the casing string. The research results can provide theoretical support for the application of vibration cementing technology in well cementing field with different well depth and different amplitude requirements.
【作者单位】： 中国石油集团钻井工程技术研究院;中国农业大学工学院;
【基金】：中国石油天然气集团公司科学研究与技术开发课题“高效辅助破岩及完井试油关键工具研制”(编号:2016B-4002)
【分类号】：TE256
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