DTH Bit ODEX eccentric overburden casing system

Product Overview

Description

Eccentric Overburden Casing System

 

Feature: Streamlined structure makes operation easier and stability more reliable drilling tools can be recycled and lifetime is prolonged.

OD of Casing Tube (mm)  ID of Casing Tube(mm) Reaming(mm)  Minimum ID of Casing Shoe(mm)  Compatible DTH Hammer(Type)  Drill Pipes(mm) 108 93-99 118 86 WD30R/WQL30R 76 114 101-103 127 91 WD30R/WQL30R 76 127 114-116 136 101 WD30R/WQL30R 76 140 124-127 152 117 WD40R/WQL40R 76 146 127-132 154 117 WD40R/WQL40R 76 168 149-155 184 140 WD50R/WQL50R 76/89 178 159-165 194 150 WD50R/WQL50R 76/89 193  173-180  206 166  WD60R/WQL60R  89/114  219 199-206  234  193   WD60R/WQL60R  89/114   245  224-231 260  210  WD80R/WQL80R    114 273  251-257 300  241  WD80R/WQL80R  114/127

Operation Steps:

A:When drilling starts working,reaming sleeve will open,borehole range will increase,which will casing shoe and casing tube.

B:When finish drilling in overburden layer,pay attention to reverse circulation,reaming sleeve circles up,eccentric drilling bit lifts out from the borehole.

C:The casing that can be left in the borehole to prevent borehole from collapsing while pulling out pipe and grouting concrete.

D:Regular drilling bits can be applied to drill the depth as required in the rock stratum.

DTH Bit ODEX eccentric overburden casing system

 

DTH Bit ODEX eccentric overburden casing system

DTH Bit ODEX eccentric overburden casing system