According to the falling body weight,shape and well structure,designed washover milling fishing tool.
根据下落
量、形状及井身结构,设计制作
套铣打捞器。
According to the falling body weight,shape and well structure,designed washover milling fishing tool.
根据下落量、形状及井身结构,设计制作套铣打捞器。
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