... 井架底尺寸 derrick base size 井架底座 derrick substructure 井架底座，底层结 substructure ...
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There is a high requirement for the derrick substructure of the ultra-deep well in structural form, layout of component parts and main materials.
超深井钻机井架底座在结构形式、构件布局、主体材料的选取等方面均有较高要求，常规的井架、底座主体材料难以满足超深井钻机特定的载荷和工况要求。
The structure of the derrick is triple-section telescoping structure, substructure is parallelogram structure, can be lifted by hydraulic cylinder.
井架采用三节伸缩式结构，底座采用平行四边形结构，能用液缸整体起升。
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