DTH casing advancement systems

October 18, 2016

Latest company news about DTH casing advancement systems

Our Roschen Tubex system

When simultaneously drilling and casing through loose overburden materials our Tubex system will give you a great result. Tubex is a cost efficient system leaving less material behind in the hole.  

 

 

Roschen® casing advancement systems are designed to work in unison, with other Sandvik tools, providing high penetration rates, long service life, and low costs. 


 

To learn more about the Sandvik casing advancement systems 



The Tubex XL eccentric drilling system is designed for simultaneous drilling and casing through overburden and loose rock formations. The Tubex XL system uses a pilot bit and an eccentric reamer. The reamer drills a hole large enough for the casing to follow. After advancing a few feet into the bedrock, the drill string is rotated in the opposite direction to fold the reamer in allowing the Tubex XL system to be retracted inside the casing. After
changing to a conventional DTH bit, the drill string is lowered into the casing, and drilling into the bedrock can resume.
latest company news about DTH casing advancement systems  0

latest company news about DTH casing advancement systems  1

 

TUBEX XL PRODUCT RANGE
TUBEX TYPE APPLICABLE CASING PIPE MIN. WALL THK. MAX. DRILL BIT DIAMETER (A) REAMING DIAMETER
MAX. O.D MIN. I.D.
IN MM IN MM IN MM IN MM IN MM
90 4.5" 115 4.0" 102 .197" 5 3.5" 90 4.8" 123
115 5.6" 142 5.0" 128 .197" 5 4.5" 115 6.0" 152
140 6.7" 171 6.2" 157 .197" 5 5.5" 140 7.4" 187
165 7.7" 196 7.2" 183 .197" 5 6.5" 165 8.3" 212
180 8.6" 219 7.6" 194 .217" 5.5 7.1" 180 9.1" 232
190 8.7" 222 8.1" 205 .248" 6.3 7.5" 190 9.3" 237
215 10.1" 257 9.5" 241 .248" 6.3 8.5" 215 10.9" 278
230 10.6" 270 9.8" 250 .248" 6.3 9.1" 230 11.3" 286
240 10.7" 273 10.2" 260 .248" 6.3 9.5" 240 12.0" 306
280 12.9" 327 12.0" 305 .280" 7.1 11.0" 280 14.6" 370



 

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