churn drilling,percussion drilling /ENERGY-MINING/
[DE] Hammerbohrung; Schlagbohren; Stoßbohren; schlagendes Bohren
[EN] churn drilling; percussion drilling
[FR] forage au battage; forage par percussion; forage à percussion; forer par battage; forer par percussion
cable-tool drilling,cable-tool method,churn drilling,churn method /ENERGY-MINING,ENG-MECHANICAL/
[DE] Seilschlag-Bohrung; Seilschlag-Verfahren; Seilwinden-Bohrung; Seilwinden-Verfahren
[EN] cable-tool drilling; cable-tool method; churn drilling; churn method
[FR] forage au câble