With the Full Face Hole Opener from Herrenknecht, pilot holes can be enlarged in a single step. The tool is modular in design. Thanks to replaceable disc cutters, it can be used in various ground conditions and quickly refurbished or modified. It is complemented by the company’s Down Hole Jet Pump, which is installed directly behind the full face hole opener and cleans the borehole and removes the cuttings directly inside the drill string. As a result, the simplest drilling fluid can be used even with larger cuttings. Its only function remains the support and sealing of the borehole. The combination enables exactly round, clean boreholes created in one single step, conserving bentonite.
www.herrenknecht.com
Drilling Equipment - Herrenknecht HDD Downhole Tools
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