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ODEX Eccentric Overburden Drilling Bit For Water Well Drilling

Using ODEX overburden drilling equipment will be a best way to prevent holes and drilling tools from damaged during drilling in some loose land formation.

In the projects of drilling,drillers often meet with problems due to the loose land formation.These may cause troubles such as difficulty in drilling down,collapse of holes,damage of drilling tools,etc.To solve the problems,the best way is to use (ODEX)Overburden Drilling System which can prevent holes and drilling tools from damage,and support the holes by casing tubes.
Eccentric Casing system


General Introduction 
1.drill in overburden unstable rock 
2.one step to drill and follow casing 
3.flexible to open or close 
4.effecient below 300mm 
 
Design Principles
Make the casing follow easy and the equipment and operation simple 
Outstanding Advantages 
Simple structure,simple operation,reliable quality,retrievable drilling tools,long service life.
 
drawing 5 for eccentric overburden drilling bit


Raw Material 
Steel:
first class special alloy steel with high strength, heat resistance and wearable
Carbide
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.

Specification

Type

Casing Tube   OD(mm)

Casing Tube   ID(mm)

Casing wall   thickness(mm)

Guide Device max   size(mm)

Reamed Dia (mm)

Casing shoe mini   Dia(mm)

Pilot bit D (mm)

Hammer type

ODEX85

108

94

7

92

117

86

85

COP34/DHD3.5

ODEX90

114

101

6.5

99

125

92

90

COP34/DHD3.5

ODEX98

127

109

9

107

138

100

98

COP34/DHD3.5

ODEX115

146

126

10

123.5

155

117

115

COP44/DHD340/SD4/QL40

ODEX140

168

148

10

146

180

138

136

COP54/DHD350/SD5/QL50

ODEX145

178

158

10

156

192

147

145

COP54/DHD350/SD5/QL50

ODEX152

183

163

10

161

196

153

151

COP54/DHD350/SD5/QL50             COP64/DHD360/SD6/QL60

ODEX165

194

174

10

172

206

162

160

COP64/DHD360/SD6/QL60

ODEX190

219

199

10

196

234

187

185

COP64/DHD360/SD6/QL60

ODEX208

245

225

10

222

263

210

208

COP84/DHD380/SD8/QL80

ODEX240

273

253

10

251

305

241

240

COP84/DHD380/SD8/QL80

ODEX280

325

300

12.5

298

350

282

280

DHD112/DHD380



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