Author name: dharma

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Drilling System

2.1. Drilling System Mechanical: percussive, rotary, rotary-percussive Thermal: combustion, plasma, hot liquids, freezing Hydraulics: jet, erosion, cavitation Sonic: High frequency

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Sistem Pemboran

2.1.Sistem Pemboran Mekanik : perkusif, rotari, rotary-perkusif Termal : pembakaran, plasma, cairan panas, pembekuan Hidraulik : pancar(jet), erosi, cavitasi Sonik

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