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 (United States. Bureau of Mines) -- 9227.
Publisher: Dept. of the Interior
Published: 1989
Place of publication: Washington, DC
Language: eng
Number of pages: 18
Subjects: Drilling muds -- Testing; Rock-drills.
Notes:  88600073  t_oclc

Bibliogr.

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