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SECTIONATED DIVIDING PLUG FOR CEMENTING STEPPED CASINGS
SECTIONATED DIVIDING PLUG FOR CEMENTING STEPPED CASINGS
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机译:分段式水泥堵漏水泥
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摘要
the invention относитс to area of the casing is.ментировани stepped columns and can be used in drilling нефт ных and gas wells.to increase the reliability of the изобретени вл етс sectional divid
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