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1·Completed ability to use inside and outside micrometer, caliper.

熟练使用内、外千分尺以及游标卡尺。

2·Caliper logging is mainly used to determine the change of inside diameters of casings, perforating depth and the depth of collars.

井径测井主要用于确定套管内径变化、射孔孔深及接箍深度等。