仪器极性和震源极性测试排序

Test sequencing method of the instrument polarity and vibroseispolarity

在地震勘探开工测试中,极性测试是一项重要的内容,包括:仪器极性和震源极性。尽管不同的甲方对极性测试有不同的要求,但基本原则均采用已知极性来验证未知极性。正确的极性测试步骤包括:1、用标准的检波器(SMT验证)测试仪器数据道极性;2、仪器数据道测试震源加速度表极性;3、震源加速度表验证从加速度表到震源电控箱体环路极性;4、脉冲测试用加速度表验证力矩马达的极性;5、正确的震源极性通过相关子波验证仪器辅助道极性;6、通过GETDSD检查震源阀位移传感器和重锤位移传感器极性。只有按照正确的极性测试方法和流程,才能确保仪器和震源的极性,以及地震采集数据的极性均符合甲方的要求。

In the field seismic exploration,the polarity test of the instrument and vibroseis is an important content.Although different parties have different requirements for the polarity test,the basic principles are all known to verify the unknown polarity.The correct polaritytesting shouldinclude the following steps ：step 1,using the standard detector（SMT test）test instrument data polarity,step2,instrument test vibroseis accelerometer polarity,step 3,vibroseis accelerometer verification table to the source control box loop polarity from the acceleration,step 4,pulse polarity test of torque motor with speed meter test,step 5,the correct source polarity through the correlation wavelet verification instrument auxiliary channel polarity,step 6,the examination of GETDSD source valve displacement sensor and a displacement sensor of hammer.Knowing the correct polarity test method and operation process can ensure the polarity of the instrument and vibroseis meet the requirements of Party A,and make convincing explanations and explanations for the polar test data submitted.