基于加速度传感器的钻柱振动测量方法研究

Study on Drill String Vibration Measurement Based on Accelerometer

为了预防钻柱振动失效,采用加速度传感器测量钻柱的纵振、横振、扭振及耦合振动。给出了加速度传感器在钻柱上的安装位置和数量,建立了加速度传感器测试信号值与钻柱振动值的关系式。采用ANSYS数值仿真软件模拟了钻柱的4种振动工况,数值仿真得到的钻柱振动加速度值与理论计算结果误差<5%。为钻柱振动测量工具的设计提供了理论依据。

For preventing drill string failures caused by drill string vibration, vibration measurement is a good method. According to the vertical vibration, horizontal vibration, tensional vibration and the coupling conditions of the drill strings,the placement and number of accelerometers were given,which were used to test the drill string vibration. The mathematical expressions between the accelerometer test signal and the three kinds of drill string vibrations were established. The ANSYS software was used to simulate the accelerometer test results in different vibration conditions. Through the numerical simulation,the drill string vibration acceleration error between mathematical results was obtained and theoretical calculations was less than 5 %, which provides a theoretical basis for the design of drill string vibration measurement tools.