For small-hole sizes, rock drilling tools manufacturer ProDrill produces the ODEX Eccentric Overburden Drilling System, rock drill bits starting with the ODEX140 to suit 168mm O.D. casings. This two-piece system comprises the shank bit holder and the eccentric pilot bit that is secured in the bit holder by a double interlocking pin. This is easily removed to allow for bit sharpening or replacement. ProDrill ODEX overburden drilling systems are widely used in a variety of applications from well drilling and mini pilling to rock anchoring and site investigation.
ODEX140 casing system drawing
ODEX Series Technical Data Sheet
Type
Casing Tube
Reamed Hole Dia(mm)
Casing Shoe Inner Dia(mm)
DTH Hammer type
Drill Pipe(mm)
OD(mm)
ID(mm)
ODEX80-P
108
93-99
118
87
COP34/DHD3.5
76
ODEX90-P
114
102-108
123
93
COP34/DHD3.5
76
ODEX100-P
127
114-117
136
102
COP34/DHD3.5
76
ODEX115-P
140
124-128
152
115
COP44/DHD340/SD4/QL40
76
ODEX120-P
146
130-134
154
121
COP54/DHD350/SD5/QL50
76
ODEX140-P
168
148-156
185
140
COP54/DHD350/SD5/QL50
89
ODEX150-P
178
158-166
195
150
COP54/DHD350/SD5/QL50
89
ODEX165-P
194
174-182
211
166
COP64/DHD360/SD6/QL60
114
ODEX190-P
219
199-207
237
193
COP64/DHD360/SD6/QL60
114
ODEX210-P
245
225-233
260
210
COP84/DHD380/SD8/QL80
114
ODEX240-P
273
253-257
308
241
COP84/DHD380/SD8/QL80
114
ODEX280-P
325
305-309
378
281
DHD112/DHD380
114
Application Range
It is suitable for drilling water wells, geothermal wells, short micro piles ,medium mini-type grouting hole of building, dam and harbor project.
1. When drilling starts, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly
2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in , allowing the drill bit assembly to be pulled up through the casing.
3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.
4. Drilling continues to the desired depth in the bedrock using a conventional drilling
What difference of ODEX115 ( Epiroc ) and TUBEX115 ( Sandvik ) ?
ODEX Reamer design by high light .
Sandvik TUBEX115 reamer design by highlight .
Part Assembly of Overburden Casing Drilling System of ODEX :