‘prospecting drilling’: a technology-enabled revolution in ... hillis.pdf‘prospecting...
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‘Prospecting Drilling’: A Technology-Enabled
Revolution in Mineral Exploration
Richard Hillis
Xplor 2017, MontrealTuesday 24 October 2017
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Technologies Will Enable ‘Prospecting Drilling’
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Technologies Will Enable ‘Prospecting Drilling’
cheap drilling and real-time
sensing enable progressive
vectoring towards covered
mineral deposits by multiple
holes in a single drilling
campaign utilising
geochemical and
petrophysical haloes
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DET CRC• one of ~30 Cooperative Research Centres
(CRCs) in Australia
• ~half funded by government and
~half by industry
• participants include miners, suppliers and
research organisations
• incorporated entity with independent board
• $62M cash and $93M in-kind (2010-2018)
• 300 researchers for 319 person years
➢ ~1/3 industry; ~2/3 research organisations
➢ ~1/3 cash; ~2/3 in-kind
➢ 7 research orgs and 12 industry orgs
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• industry-set research agenda
• 63 Participants and Affiliates
• Head Office embedded in industry
• ~30% of research funds to industry
• 110 industry-based researchers
• industry-driven Science Steering
Committee and project reviews
Industry Focus
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Wireless Sub
AutoSonde/ AutoShuttle
Lab-at-Rig® (AWD)
Prospecting Drilling
Better Vectors
Coiled Tubing Drilling& Associated Sensing
S Serendipity
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Wireless Sub
AutoSonde/ AutoShuttle
Lab-at-Rig® (AWD)
Prospecting Drilling
Better Vectors
Coiled Tubing Drilling& Associated Sensing
S Serendipity
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Wireless Sub: Real-Time Drilling Monitoring
• traditional hydraulics-based rig gauges inaccurate
• couples drill rig to rod string and provides precise and
objective measurement of:
➢ feed force ➢ torque
➢ water pressure ➢ rotation speed
➢ axial acceleration ➢ tangential acceleration
• remote monitoring of drillsite
• all drillers can replicate best drilling parameters across all
shifts in a drilling program
• optimization enables drillers of any experience to
converge rapidly on optimum drilling parameters
• involves CSIRO, Globaltech, Epslog and Boart Longyear
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Why Have the Miners Joined DET CRC?
• international mining company currently spends US$300M pa on
global drilling (exploration, development and production)
• on top of these direct drilling costs an additional 25% in costs are
incurred including rig access and transportation which takes the
total annual expenditure to ~US$375M pa
• over the 8-year life of the CRC this company will have spent in
excess of US$3B on drilling
• 10% reduction in costs resulting from improved drilling
technology would save this company ~US300M or ~US$240M in
direct drilling costs over 8 years or the life of the CRC
• further longer term savings plus improvements in safety and
environmental performance expected
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Wireless Sub
AutoSonde/ AutoShuttle
Lab-at-Rig® (AWD)
Prospecting Drilling
Better Vectors
Coiled Tubing Drilling& Associated Sensing
S Serendipity
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• routine, cheap petrophysical data from diamond
drilling
• no separate wireline crew, no extra rig time, no
hole collapse prior to logging
• AutoSonde: through bit, log-while-tripping
• AutoShuttle: behind core barrel, log-while-drilling
• AutoSonde: total γ, mag. susc. & resistivity
• AutoShuttle: spectral γ
• licenced to Boart Longyear
• $8M project involving Curtin University and
Globaltech
AutoSonde/AutoShuttle:
Downhole Petrophysics
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AutoSonde Gamma
vs.
Wireline Gamma
AutoSonde: grey fill
Wireline: black line
A: Sandstone/shale sequence.
B: Metamorphosed sandstone
/shale sequence
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Wireless Sub
AutoSonde/ AutoShuttle
Lab-at-Rig® (AWD)
Prospecting Drilling
Better Vectors
Coiled Tubing Drilling& Associated Sensing
S Serendipity
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Lab-at-Rig®: Top-of-Hole Geochemistry & Mineralogy
• geochemistry and mineralogy in near real-time
from drill cuttings
• cuttings separated from drill fluids by solids
removal unit (centrifuges), dried and presented
for XRD and XRF analysis
• geochemical accuracy and depth-fidelity
supported by extensive testing and comparison
to assayed core
• Lab-At-Rig® licenced to Imdex
• $17M project involving CSIRO, Olympus &
Imdex
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Wireless Sub
AutoSonde/ AutoShuttle
Lab-at-Rig® (AWD)
Coiled Tubing Drilling& Associated Sensing
Prospecting Drilling
Better Vectors
S Serendipity
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Coiled Tubing Drilling: Positives
• faster and cheaper because drill rod connections are
not required (drill string is a continuous tube)
• safety: eliminates manual handling of drill pipe
• environmental: drilling fluid recycling eliminates
sumps
• quicker mobilisation/de-mobilisation and less labour
• better hole stability because drilling is quicker and
fluid circulation not turned on and off for connections
• tube is potential conduit for drilling and sensing data
from bottom-of-hole to surface
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Coiled Tubing Drilling for MinEx: Challenges 2012
• fatigue life of coil
• drill hard rocks with low weight-on-bit
• recycle and clean fluid for downhole motors
• hole deviation
• representative sample to replace core
• $AUS 50/metre target cost
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Coiled Tubing Drilling for MinEx: Challenges 2012
• fatigue life of coil
• drill hard rocks with low weight-on-bit
• recycle and clean fluid for downhole motors
• hole deviation
• representative sample to replace core
• $AUS 50/metre target cost
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Diamond Drilling
1863blast holes
in Alps
1863 2017
1890sminex
Boyles wUSLongyear MN
191219 drills in Longyear catalogue
1930sboartsadded to bits
1953wireline core
retrieval patent
201525m/shift MSDP 2
1971PDC bit
patent
1980ssynth. dia. & impreg.
bits
2010EDI
2017 92m/shift MSDP 2
2006 AMIRA
Roadmap
2017
CTD for MinEx
2006
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Wireless Sub
AutoSonde/ AutoShuttle
Lab-at-Rig® (AWD)
Coiled Tubing Drilling& Associated Sensing
Prospecting Drilling
Serendipity S
Better Vectors
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Technologies Will Enable ‘Prospecting Drilling’
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Source: Scot Halley
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Technologies Will Enable ‘Prospecting Drilling’
cheap drilling with real-time sensing enables progressive vectoring by multiple holes in a
single drilling campaign towards covered
mineral deposits using geochemical and
petrophysical haloes
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“Not publish or perish. Partner and prosper.”
Alex Zelinsky, Chief Defence Scientist, Australia
“But partnership is a contact sport.”
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“Not publish or perish. Partner and prosper.”
Alex Zelinsky, Chief Defence Scientist, Australia
“But partnership is a contact sport.”
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