Hydraulic resistance to movement of a drill suspended by a cable in a bore-hole in travels

• Main Authors: Vasiliev,N.I., Kudryashov, B.B.
• Format: Report
• Language: English
• Published: St. Petersburg State Mining Institute/St. Petersburg State Mining Institute 2002
• Subjects: Severnaya Zemlya; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2438; http://id.nii.ac.jp/1291/00002438/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2438&item_no=1&attribute_id=18&file_no=1

Equations are given for calculation of the hydraulic resistance force to movement of a drill suspended by cable and the speed of its movement as a function of the dimension and mass of the drill and properties of the hole liquid. The most significant factor influencing the hydraulic resistance durin...