Sonic Tooling

Dual Wall CoreBarrel Samplers

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Main information

Dual Wall CoreBarrel Samplers

DualWall CoreBarrel benefits

  • Improve sample quality and recovery in harder and mixed formations
  • Do not flush away the fine material in a sample
  • Do not miss any layer!
  • A monitoring well can be installed directly after sampling through the casing
  • No deviation in formations with boulders and hard layers
  • Very accurate sample of overburden intersection going over into hard bedrock

The DualWall core barrel sampler is designed to take high-quality samples in formations that are normally a nightmare. It will work best in formations that contain harder layers or boulders. It can even handle very soft alluvial formations going over into a hard material. The sampler has an annular space in the barrel that makes it possible to use a medium without washing away the fine material. For ring bit selection there is a front or side discharge available. The front discharge is used in homogeneous hard formations. The side discharge version is designed for mixed formations, it will prevent that fine material is flushed away. A casing makes sure that the borehole does not collapse when emptying the sampler. The DualWall Core barrel is available in 3 different diameters to match your requirements. Cores will be sampled straight in the core barrel. The sample can be extruded into polyethylene foil tube, plastic gutters or core box.




CoreBarrel 55


CoreBarrel 105

CoreBarrel 130






Max. depth

No limit


 No limit

No limit

Sample diameter

53 mm


100 mm

 125 mm

Sample length

2 m


3 m

3 m

Core catcher possible





Overall size

70 mm


133 mm

 158 mm

For casing sizes

GP 63 mm O.D.


GP 114 mm

GP 114 mm

Fits in





Material used





Eijkelkamp SonicSampDrill
Nijverheidsstraat 9
6987 EN Giesbeek
The Netherlands

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or Call us today +31 313 88 02 00

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