No sacrificial drill tip. Clear passage for concrete and reinforcement.
The Olivier reusable drill tip closes the drill pipe during drilling. When rotation is reversed for extraction, the integrated gates open automatically. They remain attached to the auger head and return to the surface with it. A sacrificial steel drill tip is therefore no longer needed.
Key benefits
No sacrificial steel left behind
No sacrificial steel drill tip remains in the ground. The integrated gates are reused.
Safer working
There is no need for anyone to fit a sacrificial drill tip beneath the auger head. Eliminating this operation reduces exposure to the risks associated with fitting the tip.
Lower CO₂ emissions through reuse
There is no need to manufacture, transport and handle a new sacrificial steel drill tip for every pile. This avoids material consumption and the associated CO₂ emissions, pile after pile.
Clear passage for concrete and reinforcement
The open gates provide clear passage for concrete and reinforcement. During reverse extraction, concrete flows out of the drill pipe while the pre-positioned reinforcement cage remains at the intended depth.
How the reusable drill tip works
Drill with the gates closed
The closed gates form the drill tip and seal the drill pipe during drilling, preventing soil and water from entering.
Place the reinforcement
At the required depth, the reinforcement cage is lowered through the drill pipe. Concrete supply then begins.
Open the gates and extract
The gates open automatically during reverse extraction. The reinforcement remains at depth while concrete is supplied. The gates return to the surface with the auger head.
Clear passage for concrete and reinforcement
The reusable drill tip closes the drill pipe during drilling. Once the gates open, they provide clear passage for concrete and reinforcement. Concrete is supplied during reverse extraction while the pre-positioned reinforcement cage remains at the intended depth.
Three opening sizes
The configuration is selected to suit the auger head and the required clear opening. The sizes below reflect the current product range.
| Clear opening | Application |
|---|---|
| 210 mm | Olivier pile d31/51 and Olivier DPA d31 |
| 250 mm | Olivier pile from d36/56 and Olivier DPA from d36 |
| 300 mm | Large auger heads, with the configuration selected for the application |
For Olivier pile and Olivier DPA
The reusable drill tip is used with both Olivier piling systems, for foundation piles and ground improvement. The auger head and reinforcement are selected to suit the piling technology and project requirements. Integration into an existing drilling application may also be possible. Olivier first assesses whether the gate system can be integrated technically, taking into account the auger head, clear opening, direction of rotation and installation method. Contact us to discuss the possibilities for your existing equipment.
Less steel production, less transport, fewer emissions
Every sacrificial steel drill tip requires steel production, fabrication, transport and handling. On projects involving hundreds or thousands of piles, these material and transport requirements recur for every pile. The Olivier reusable drill tip eliminates one sacrificial steel drill tip per pile. The avoided production and logistics can therefore deliver substantial CO₂ savings across a project. The extent of these savings depends on factors including the weight and production of the replaced tips, transport distances and the service life of the reusable system.
For the Olivier pile, the screw-shaped shaft provides additional concrete savings. This benefit comes from the pile geometry, alongside the material savings provided by the reusable drill tip. With full displacement, no excavated spoil is brought to the surface or needs to be removed from the site.
The system in practice
Protected Olivier technology
The Olivier reusable drill-tip technology is protected by patents. Unauthorised copying, manufacture, offering for sale or trading of products covered by applicable patent or design rights is prohibited. Olivier NV reserves the right to take legal action against infringement. Protection varies by component and country. Contact Olivier in advance for information on application, supply and licensing conditions.
Gate system patent references
The following publication numbers refer to patents and patent applications for the gate system. Application publications do not constitute separate granted rights: AU2018352172A1; AU2018352172B2; BE1025657A1; BE1025657B1; CA3075710A1; CA3075710C; DK3523480T3; EP3523480A1; EP3523480B1; ES2898311T3; NZ762590A; PL3523480T3; SG11202003085XA; US11268255B2; US11655606B2; US2021189676A1; US2022127809A1; WO2019077416A1
Discuss your piling technology with Olivier
Would you like to use the Olivier reusable drill tip? Contact us to discuss your piling technology and installation method.
Discuss your application