β Scribed by E. Nordlund
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π SIMILAR VOLUMES
This paper describes the results of laboratory investigations into the effect of drilled solids on the drilling rate and drilling performance. Drilling fluid performance and a successful result during drilling operations are characterised by the fluid's properties providing hole cleaning and cutting
The motion of a drilling structure is studied in torsion. The stability of the stationary solution is determined by the direct method of Liapounov, supplemented with results for the linearized method. The stability criterion is "rmly based on the form of the boundary condition linked to the rock des
In this work, the two main factors that in uence the repeatability of the laser percussion drilling process are identiΓΏed. Experimental parametric analysis was carried out to correlate the laser parameters with the repeatability of a laser percussion drilling process. The experiment was conducted us