Zero-surface-charge-controlled drilling for enhanced penetration and extended bit life
By: by John E. Pahlman ... [et al.].
Contributors: Pahlman, J. E.
Series: Report of investigations ;; 9227; Report of investigations (United States. Bureau of Mines) ;; 9227.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1989
Place of publication: Pittsburgh, PA
Language: eng
Number of pages: 18
Subjects: Drilling muds -- Testing.; Rock-drills.; Directional drilling.
Notes: Bibliography: p. 18.