PROJECT : Complex42™ Trial – NQ Exploration Drilling
SUBSTRATE : Hard Grey and Pink Granite
PLACE : Mita Mita, Victoria, Australia
DATE : 13th September 2022
CONTACT : Simon Smith & Mick Wild: info@dartmining.com.au
WEBSITE : www.dartmining.com.au
DRILL RIG : Atlas Copco DIAMEC® 252
DRILL BIT : Boart Longyear 10 (Softest Matrix)
Starting Parameters
MUD: Potable water plus recommended dose of GeoBond 2.0 polymer.
Water management: 3 x IBCs at 90% capacity (2,700L). 2 IBCs use for water return and mud settling, 1 for adding polymers.
Starting depth: 47.6 meters (NQ diameter 75.7mm), approx. volume 214 Litres
PART 1 – Control, NO Complex42™
Mud formulation: Potable water plus Geo Bond 2.0 @ recomm. dose
Best 3m excursion: 67 minutes (44mm/minute)
RPM:
PART 2 – WITH Complex42™
Mud formulation: Potable water plus Geo Bond 2.0 @ recomm. dose PLUS 0.8% COMPLEX42™
Best 3m excursion: 23 minutes (130mm/minute)
RPM: 800
PART 3 – WITH Complex42™ Geo Bond 2.0 dose HALVED
Mud formulation: Potable water plus Geo Bond 2.0 @ ½ recomm. dose PLUS 0.8% COMPLEX42™
Best 3m excursion: 20 minutes (150mm/minute)
RPM: 600 to 700
POINTS OF INTEREST
- Once system is dosed, when there is little fluid loss due to fissures, only small amount (in this case 4L) of Complex42™ is required to maintain performance.
- Faster ROP, 12.5% to 25% decrease in fuel consumption, plus lower dose of viscosity modifying polymer = huge reduction in “all-in” sustaining costs (AISC) and significant increase in returns.
- Even in broken, friable ground average ROP is higher.
