Zero-surface-charge-controlled drilling for enhanced penetration and extended bit life

Additional Authors:	Watson, Pamela J., Pahlman, J. E., Engelmann, William H., Tuzinski, Patrick A.
Year:	1989
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:9227
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	9227
Subjects:	Drilling muds--Testing
	Rock-drills
	Directional drilling
Link:	https://hdl.handle.net/2027/mdp.39015078477042