近年来,钻井都用两种不同的方法进行速度测量。一种是放炮的普通地震测井法,另一种叫声速测井,亦称连续速度测井。这两种方法的观测结果,常常不一致。对于深井,两者观测值之差可达数十毫秒。一般都认为普通测井的结果是准确的, In recent years, drilling has used two different methods for speed measurement. One is shot blasting ordinary seismic logging method, another called sound velocity logging, also known as continuous speed logging. The observations of these two methods are often inconsistent. For deep wells, the difference between the two observations can reach tens of milliseconds. Generally considered the result of ordinary logging is accurate,