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The paper presents comprehensively the classification of multilateral wells in Baker Hughes Company and the related type of reservoir The drilling completion tools of ROOT system developed by Baker Hughes Company and their functions、operational procedures as well as the key points to be paid attention during completion operation are fully introduced.

系统介绍BakerHughes公司对于多底井分支井的分类方法及其相适应的油气藏类型 ,对BakerHughes公司研制的ROOT系统的钻井完井工具、功能原理、施工步骤以及完井作业时应该注意的问题详细进行了说明 ,对BakerHughes的多底井分支井钻井完井系统的特点进行了总结 ,并提出几点认识与建议。