Incorporation of Yaskawa ac drives has enabled a major oil field service company to design and introduce an effective new dewatering and sludge removal system for use with offshore and coastal drilling rigs. Drilling operations routinely bring tons of wet sludge to the surface. This sludge -- specifically the "solids" contained therein -- must, by law, be transferred to an approved landfill. Significant savings are achieved by removing as much w

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