Cover of the work “Design and technological methods for improving the operational efficiency of large-diameter roller cone drill bits”. Author: Yasashin, Vitaliy Anatol'evich. Degree: Doctor of Sciences. Year: 2009

Design and technological methods for improving the operational efficiency of large-diameter roller cone drill bits

OJSC "NPO "Burovaya Tekhnika" - All-Russian Scientific Research Institute of Drilling Technology", Moscow

463 pp.

Design and technological methods for improving the operational efficiency of large-diameter roller cone drill bits — Yasashin, Vitaliy Anatol'evich — 2009 — Russian Dissertation Library