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Eccentric(ODEX) Casing System
Features:
- Longer operating life and excellent anti-wear properties.
- Strengthen the structural strength,easy to operate.
- Stable and reliable performance,high drilling speed.
Operation Procedure:
1. When drilling starts,the reamer opens and enlarges the hole to drive the casing shoe and casing tube down.
2. When the drilling in over-burden formation is finished,reverse the rotation to close the reamer,then the assembly can be pulled up through the casing tube.
3. The casing tube can be left in the hole,or can be pulled out by means of grout sealing materials.
4. Use the normal drilling tools to drill and achieve to the desired depth.
Model
Casing sizes (mm)
Min. inner dia. Of casing
shoe
Reaming Dia.
(mm)
Connection
Thread
Hammer shank type
Max. OD
Min. ID
ODEX90
115
102
123
93
API 2 3/8" Reg
DHD3.5; COP32; QL30
ODEX115
142
128
152
118
API 2 3/8" Reg
DHD340; COP44; SD4; QL40
ODEX140
171
157
187
143
API 2 3/8" Reg
DHD350R; COP54; SD5; QL50
ODEX165
196
183
211
168
API 2 3/8" Reg
DHD360; COP64; SD6; QL60
ODEX190
222
205
237
193
API 3 1/2" Reg
DHD360; COP64; SD6; QL60
ODEX240
273
261
308
243
API 3 1/2" Reg
DHD380; COP84; SD8; QL80
ODEX280
324
305
378
283
API 4 1/2" Reg
SD10; Numa100
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