一旦超深井钻机出现安全问题，造成的人身和财产损失非常严重。
The safety problems of ultra-deep drilling rig will result in very serious personal and property losses.
超深井钻机的安全评估对有效的预防和减少事故的发生，减少财产损失和人员伤亡等方面有重要的意义。
The safety assessment of ultra-deep drilling rig has important significance for effectively preventing and reduction accidents and reducing casualties and property damage.
超深井钻机配套技术的研究对提高油气田开发的效率，提高钻机的总体经济性等方面都具有极为重大的意义。
The matching technology research of ultra-deep drilling rig is very important to improve the efficiency of oil and gas development and the overall economy of rig.
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。
There is a high requirement for the derrick substructure of the ultra-deep well in structural form, layout of component parts and main materials.
然而，对液压顶驱的研究，还停留在修井机、和浅井钻机上。国内目前还没有深井和超深井系列的液压顶驱装置。
However, the study in the hydraulic top drive only used in the service machine, poor-boy rig, also there have no research on deep and ultra-deep series of hydraulic top drive unit in China.
然而，对液压顶驱的研究，还停留在修井机、和浅井钻机上。国内目前还没有深井和超深井系列的液压顶驱装置。
However, the study in the hydraulic top drive only used in the service machine, poor-boy rig, also there have no research on deep and ultra-deep series of hydraulic top drive unit in China.
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