As for large scale clastic rock, the combination of laser dry method and Laser wet method or the combination of sieve method and laser wet method were used to measure the granularity.

• 结果表明，为了使粒度分级格式符合石油行业标准的要求，对于宽范围的碎屑岩，采用激光干湿法结合或者筛析法与激光湿法结合的方式进行粒度测量；