heavy-weight drilling 重泥浆钻井

Overall Drilling Weight 整机工作重量 ; 整机工作质量

weight control on drilling bit 钻压控制

Petroleum drilling weight indicator 石油钻井指重表

Drilling weight indicating system 石油钻井指重表

suspending weight and drilling weight 悬重和钻重

drilling supply weight 钻井补给品重量

drilling cuttings weight 钻屑量