Eccentric(ODEX)casing systems

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Eccentric(ODEX)casing systems

Application

Land surface covered with loose,unconsolidate material such as soil,clay,silt,sand,gravel and boulders

AngleDrills at any angle
Drilling depth 30Meters
SizeODEX90-ODEX280


| Eccentric Casing system

         Drilling through formations with loose,unconsolidated material always comes with problems such as the bore hole cave-in collapse.How to avoid these problems?With years of field pratice and reserch,Teamwhole had developed its eccentric casing system application for strata with silt,sand or small size pebbles.With its simple struture,easy operation and reliable performace,this system can advance the casing easily for depth within 30 meters.And it's retrievable with long serive life.

Eccentric casing sysrem(ODEX) Working procedure
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1.When drilling starts,
the ODEX 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 conven
tional drillstring.
                 Structure      Related Parts ListProductsInstruction

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1.Casing tube

a.THreaed casing tube,left-hand

b.Welded Casing tube

2.Drill pipeThread:API(REG/IF)/NC
3.Stabilizer

Thread of Stabilizer

consistent with drill rod

4.HammerThread:API REG
5.Casing shoe

a.Threaed casing tube,left-hand

b.Welded Casing tube

6.Eccentric casing system

See technical data sheet as

 below

| ODEX for DTH drilling Model as follow,

Model

Outer 

Dia. of Casing Tube(mm)

Inner Dia. of Casing Tube(mm

Wall 

thickness of 

casing

(mm)

Guide 

Device 

max.diameter(mm)

Reamed Dia.

(mm)

Min. 

Inner 

Dia.of Casing Shoe

(mm)

Max.

OD of 

normal bit(mm)

Hammer Type

Drill Pipes

(mm)

Weight

(kg)

ODEX8510897

7

921178685COP34/DHD3.57612.5
ODEX901141016.5991259290COP34/DHD3.576/8914
ODEX98127109910713810098COP34/DHD3.58916
ODEX11514012610123.5155117115COP44/DHD340/QL408928
ODEX14016814810146180138136COP54/DHD350/SD5/QL508942
ODEX14517815810156192147145COP54/DHD350/SD5/QL508944
ODEX1521831631016119153151COP54/DHD350/SD5/QL50/COP64,DHD360/SD6/QL6089/11448
ODEX165
19417410172206162160COP64,DHD360/SD6/QL6011456
ODEX19021919910196234187185COP64,DHD360/SD6/QL6011475
ODEX20824522510222263210208COP84/DHD380/QL80/SD8114114
ODEX240273
25310251305241240COP84/DHD380/QL80/SD8114140
ODEX28032530012.5298350282280DHD112/DHD380/SD10114/127226

| Top  Hammer Casing System

ModelOuter Dia. of Casing Tube
(mm)
Inner Dia. of Casing Tube(mm)Wall thickness of casing
(mm)
Reamed Dia.
(mm)
Min. Inner Dia.of Casing Shoe
(mm)
Hammer TypeDrill PipesWeight
(kg)
ODEX for Top Hammer Drilling
ODEX7689785.59472R38R384
ODEX901151026.512592R32,T38,R38R32,T38,R385.2
ODEX1151401286154117T45,T51T45,T5110


You can choose with Outer Dia. of Casing Tube(mm)+Inner Dia. of Casing Tube(mm)+Min. Inner Dia.of Casing Shoe

(mm)+DTH hammer type,Matched casing shoe,DTH hammer,drill pupe are available.

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