Deep Exploration TechnologiesCoiled Tubing Drilling

DEEPCORE

DRILLING PLUS WORKSHOP

Program 1 Leader: Soren Soe

Drilling

IP and Role of Service Providers

Mining Companies

Drilling Equipment Manufacturers/

Technology Service Providers

R&D Providers

Resea

rch

Research & Technology Transfer

Comm

ercialise

Drilling equipment manufacturers & service

providers offer a natural route to commercialisation

Mining companies and geological surveys are

the end users

IP Creation

DETCRC

IP Licencing

IP Utilization

Scoping Project Outputs

Questionnaire + Workshop:• Geologists• Drillers• Researchers

MISSIONVISION

CT

Dri

llin

g

Lab

-at-

Rig

TM

Dow

nh

ole

Sen

sing

MINERAL SYSTEMSDRILLING

Coiled Tubing Drill Rig

Autonomous Sonde

Lab-at-RigTM

Project 1.1 - Coiled Tubing Drill rig-

Vision• To develop and adapt transformational drilling technologies.

• Coiled tubing rig for greenfields mineral exploration drilling at a cost of $50/metre to a depth of 500 metres and weighing less than 10 tonnes with ancillary safety and environmental benefits

Mission

Tough but doable

Program 1 in Context with Program 2 and 3

• 2-3 hours move in and rig up time

• Penetration rates: up to100m/hr in soft, predictable sedimentary rocks.

• CTD offers improved cost, safety, and environmental impact in mineral exploration

• Key challenges for mineral exploration include: • Hard rock drilling with a Low weight-on-bit• Coil durability• Efficient Micro in-hole tooling• Micro borehole sensing and sampling

Coiled Tubing Drilling for Minex

Coiled Tubing Drilling in MINEX

DET CRC Drilling Research

Project 1.1: Key Outcomes Cutting the rock - high RPM

First Drilling with Turbine at Brukunga

New Full-face Bit design

New Bit matrix with Improved wear resistance

8000 RPM Turbine drilling

Close cooperation with Turbine manufacture(s) for next generation Turbine and a new Turbine is on the market

Chasing consisting ROP of +500 mm/min in Granite rock in the LAB

Project 1.1: Key Outcomes Cutting the Rock with Percussive water hammer:

“New’ Bit150 meters drilled.Gauge worn 0.16 mm

“Old” Bit35 meters drilled. Gauge worn out

New Bit design(s) with Improved wear resistance

Chasing consistent ROP +1000 mm/min in the field

DET CRC - Vanadium Hammer barrel reduced deviation to a 1/3

Project 1.1: Key Outcomes Coiled Tubing Drill Rig

Coiled Tubing Rig:

The Coiled Tubing rig mounted with steel Coil drilled to a depth of 150 metres with water hammer in 8 hours. (325mm/min average)

The Coiled Tubing rig mounted with Flexible H-Coil drilled to a maximum depth of 145 metres with water hammer in several intervals.

Percussive drill cuttings circulated to the SRU

CT rig Version 1Steel Coil

CT rig Version 2Flexible Coil

Coiled Tubing

Our First Prototypes of Composite Coiled Tubing has been manufacturedDrilling with Composite Coiled Tubing commenced

December 2014 – May 2015

November 2014

February 2015

March - April 2015

March 2015

Benchmarking & Validation

Project 1.1: Key Outcomes Flexible Coiled Tubing - H-Coil

Future Coiled Tubing Rig

May 2016 delivery timeframe

Steel Rig H-Coil Retro Fit H-Coil Rig

Down-Hole Force-Torque Sub

The DET CRC down-hole force-torque sub measure weight-on-bit, torque and internal fluid pressure.

Additional sensors could be integrated into future iterations of the tool.

The sub communicates with an interface unit on the surface over an armoured cable within the tubing of the Coiled Tubing Drill Rig.

Slimmest down-hole force-torque sub in the world.

Hole stability, Water cleaning & Cuttings transport

Full-scale trials at Brukunga collecting cuttings. CFD models “Tuned” to match flow loop observations

Project 1.1: Key Outcomes Sample returns/ drilling fluids/Hole stability

Percussive CT-drilled hole. Dry section. 360° Photo

Percussive CT-drilled hole. Wet section

Percussive CT-drilled hole wet section Clay wash out

Printed Core

Standard SRU’s will under most conditions remove 90% of cuttings in the drilling fluids. We are currently achieving 99.9% cuttings removal.

Hole stability, Water cleaning & Cuttings transport

Lab-at-RigTM Geochemistry and Mineralogy

Drill hole

GeologicalLogging

GeotechLogging

Core yardpetrophysics

SplitCore

SamplePrep Assay

WirelineLogging

Comminution

Disparate data streams

daysd

ays

we

eks weeks

months

months

days toweeks

days

weeks

Currentworkflow

DET CRC workflow

Productivity!!

All Underpinned by knowledge of the host rocks and mineral system!

1 day

Broad sulphide zones

Sulphide veinlets

Increasing scaleDown hole S/Ti value

large

scale fe atures

small sca

le features

med

ium scale

features

S/T

i fro

m p

XR

F o

f d

rillin

g p

owde

rs

Wavelet transform

Rea

l ti

me

Re

al t

ime

Same day

Same day

Whereto drillnext?

Source: Advertiser Newspaper, 9 December 2014

Mineral Systems Drilling ProgramGeological Survey of SA: mid 2015

• following 2014’s GA/GSV Victorian drilling

• key step in planning – design – manufacture – lab testing – Brukunga DRTF testing – field testing technology

• ~16 holes/~7 km to map mineral system under cover

• principally Wireless Sub, Lab-at-RigTM (incl. LAR Fluids), AutoSondeTM (possibly AutoShuttle), VSPs & Real-Time Drill Site

Mineral Systems Drilling withGeological Survey of SA: mid 2015

• ~16 holes/7 km to map mineral system under cover

• applying DET CRC’s new technologies

South Australia

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Mt Cu-eq

Thank you