The Dual Wall CoreBarrel sampler is designed to take high quality samples in formations that are normally very difficult. It works best in formations containing harder layers or boulders. It can even handle very soft alluvial formations that transition into hard material.
The Dual Wall CoreBarrel Sampler has an annular space in the barrel that allows a medium to be used without washing away the fine material. The Dual Wall CoreBarrel Sampler is suitable for taking drill cores in harder geologies. If you want to take drill cores in medium hard geologies, we recommend the Single Wall CoreBarrel Sampler.
A front or side outlet is available for the choice of ring bits; the frontal version is used in homogeneous hard formations, while the side outlet version is intended for mixed formations, and prevents fine material from being washed away. A casing prevents the borehole from collapsing when the sampler is emptied. The cores are sampled directly in the core barrel. The sample can be extruded in polyethylene foil tube, plastic gutters or core box. With the Dual Wall Core Barrel sampler, you have the ability to perform SPT testing in between samplings.
The Dual Wall CoreBarrel Samplers is now available in different diameters and lengths. You can get the following sizes from us:
| Dual Wall CoreBarrel Samplers | |
|---|---|
| Available in different sizes | CoreBarrel 68 / 3.5" / 5" / 6.7" |
| Max. depth | No limit |
| Material used | Steel |
