VIC, Australia – July 2023
Case Study Details
Case-Study_Complex42_Access-Excavations-121-Yale-Drive-EppingPROJECT : 8 x 5m deep 600mm Cores hole in rock
SUBSTRATE : 250mpa Basalt
PLACE : 121 Yale Drive, Epping, VIC, Australia
DATE : 4 July 2023
COMPANY : Access Excavations
ENGINEERS : Russell, Joel, Kyle & Logan
DRILL RIG : HPM 100J 30 Ton Excavator
DRILL BIT : 600mm Core Drill, Betek TCT Segments
SUMMARY OF RESULTS
Average Rate of Penetration (ROP) :
WITHOUT: 18.5mm / minute
WITH COMPLEX42™: 23.8mm / minute
Torque :
WITHOUT: 30-45 KPa
WITH COMPLEX42™: 18-25 KPa
Gearbox range :
WITHOUT: 1 to 7
WITH COMPLEX42™: 7 – 10
Additional Advantages with Complex42™
- Less Vibration of the whole machine
- Reduced fuel consumption from reduced load
- Significantly less wear on teeth
- Less wear on hard facing of core drill
Parameters : Potable water bucketed into the hole as required
TRIAL PART 1 : CONTROL POTABLE WATER ONLY
3 x 600mm diameter holes, 5m depth:
- Average rate of penetration (ROP) – 4.5hours / 5m hole.
- Torque range – 30 to 40kn.
- HPM drill rig running in 1st to 7th gear with significant fluctuations in RPM due to friction load on core drill.
TRIAL PART 2 : 0.8% Complex42™ ADDED TO POTABLE WATER
3 x 600mm diameter holes, 5m depth
- Average rate of penetration (ROP) – 3 hours / 5m hole
- Torque range – 18 – 25kn.
- HPM drill rig smoothly running through to 10th gear (top gear) and maintaining constant RPM.
LARGE REDUCTION IN “ALL-IN’ RUNNING COSTS
Improvement in performance and reduction in load on the rig is instantaneous and very obvious. You hear a large drop in machine noise (effort), vibration and chattering, and also hear it smoothly move through all 10 gears and you see an instant large drop in torque.
- ~20 to 30% increase in ROP (even in variable ground)
- ~12.5 to 25% lower fuel consumption due to lower torque load.
- ~30 to 50% increase in life of tungsten carbide teeth = less down time AND reduced tooling costs.
- Significantly less wear on hard facings = less down time and reduced tooling costs.
- Reduced load, more consistent RPMS, less vibration and chattering = less wear and tear on the rig, lower maintenance costs per metre of drilling and less machine down time.
