By computation of the correlation degree and the comprehensive index value, the comprehensive evaluation result of the reducer-turbodrill design schemes is obtained objectively.
通过关联度和综合指标值的计算，客观地给出了减速涡轮钻具设计方案综合评价结果。
2
Underwell reducer, categorized as downhole tools of turbodrill supporting equipment, is now still in the research and development stage. It can also be used in oil extraction fields.
井下减速器属于井下动力工具涡轮钻具的配套设备，也可用于采油领域，目前国内尚处于研制阶段。
3
This paper briefly introduces the typical high-steep structure of China and describes the structure and the energy converting method and characteristics of the turbodrill self developed.