Seismic-while-drilling ( SWD) is a downhole seismic technology that uses bit vibrations as a downhole source and surface geophones to measure signals.

• 随钻地震(SWD)技术是一种利用钻井过程中钻头破岩时的振动作为震源,用地面检波器排列接收信号进行地震测量的井中地震技术。