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COMPLEX42™ – NQ EXPLORATION DRILLING HARD GRANITE – DART MINING

VIC, Australia – September 2022

Case Study Details

Download full case study here

Case-Study_Complex42_Dart-Mining_30Sept2022

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.