CAJ | 학술논문

介绍了套管中振动波的应用情况和影响其传播的衰减因素。根据弹性力学相关理论得到振动波在自由套管中传播的波动方程，分析了振动波在井液-套管-水泥环系统中的传播规律，并模拟计算了不同套管柱的衰减系数。通过对实际钻塞试验采集的振动信号进行分析，验证了套管作为振动信号传输介质的可行性和低衰减性，并求取了相应的衰减系数，与模拟计算结果相符。
개소료투관중진동파적응용정황화영향기전파적쇠감인소。근거탄성역학상관이론득도진동파재자유투관중전파적파동방정，분석료진동파재정액-투관-수니배계통중적전파규률，병모의계산료불동투관주적쇠감계수。통과대실제찬새시험채집적진동신호진행분석，험증료투관작위진동신호전수개질적가행성화저쇠감성，병구취료상응적쇠감계수，여모의계산결과상부。
The study of vibration wave in the casing medium and the attenuation factors was intro-duced,which affected the wave propagation.Based on the vibration wave formula in the free cas-ing based on some elastic mechanics theory,the transmitting law of the vibration wave in the well fluid-casing-cement system was analyzed and the relative attenuation coefficients in different cas-ing strings was calculated.By detecting and analyzing the signal of drilling plug in the second spud,the feasibility and the low attenuation law of vibration wave in the casing were proved,and the attenuation coefficient was obtained,which is similar to the simulation result.