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1. (WO2013120475) DEVICE FOR DRY DRILLING USING DRILLING DEBRIS EXTRACTION

Pub. No.:    WO/2013/120475    International Application No.:    PCT/DE2013/000065
Publication Date: Fri Aug 23 01:59:59 CEST 2013 International Filing Date: Thu Feb 07 00:59:59 CET 2013
IPC: E21B 21/07
E21B 21/015
Applicants: CFT GMBH COMPACT FILTER TECHNIC
Inventors: BOTH, Reinhold
Title: DEVICE FOR DRY DRILLING USING DRILLING DEBRIS EXTRACTION
Abstract:
The invention relates to a device for dry drilling using drilling debris flushing and dust extraction, which is suitable for use in a drilling rig having one or especially also a plurality of drilling trucks, wherein each drilling truck having a dust extraction means and drilling debris collector (2') is assigned a vacuum generator (3) that is stable with regard to volume flow, especially in the form of rotary piston blowers (10, 11, 12), and a surface filter (4, 4', 4") having compact elements (5, 6) and serving as a dust filter (2) and drilling debris collector (2'). The surface filter (4) is designed in such a manner that said filter reliably separates both the drilling debris and the dust.