Ptr Minerals Limited · ASX:PTR
Ptr Minerals — Petratherm — Australian Fracture Stimulation Symposium 2011
23 slides from Ptr Minerals's conference presentation, Sep 8, 2011
Slide 1: Presentation to Australian Fracture Stimulation Symposium
ASX Release For personal use only PETRATHERM LIMITED ABN 17 106 806 884 Presentation to Australian Fracture Stimulation Symposium – Adelaide, 9 September 2011 Petratherm’s Reservoir Engineer, Ms Ella Maria Llanos, will present a paper to the Australian Fracture Stimulation Symposium to be held in Ad
Slide 2: Early Findings from the Fracture Stimulation Program in the Paralana 2 Geothermal Well
For personal use only Early Findings from the Fracture Stimulation Program in the Paralana 2 Geothermal Well FRACTURE STIMULATION SYMPOSIUM Adelaide, September 9th , 2011 By Ella María Llanos R
Slide 3: Disclaimer and competent persons statement
Disclaimer and competent persons statement For personal use only Any forward-looking statements included in Petratherm makes no representation or Disclaimer this document involve subjective judgment warranty as to the accuracy, reliability or This presentation has been prepared by and analysis and a
Slide 4: Petratherm overview
Petratherm overview For personal use only MADRID Our company & BARCELONA Direct use heat, EGS & hydrothermal Projects spanning Australia, Spain and China CHINA TENERIFE & Exclusive GRAN CANARIA exploration Conventional agreement volcanic Projects across the spectrum of geothermal PARALANA & EAST tec
Slide 5: Paralana Project – Commercial Plan
Paralana Project – Commercial Plan For personal use only Small off grid market (5-30MWe) Potential large on grid development (260 MWe+) Expenditure well leveraged for proof of concept, then potentially fully funded to initial commercial demonstration scale 30MWe plant Funding and expertise from JV:
Slide 6: Paralana Project – Regional Picture
Paralana Project – Regional Picture For personal use only
Slide 7: Development Model – Heat Exchanger within Insulator
Development Model – Heat Exchanger within Insulator For personal use only › Higher Permeability › Chemically Stable › Adelaidean bedding / joint surfaces = Cheaper Power!
Slide 8: 2D seismic interpretation suggests faults and fractures may be regionally extensive
For personal use only 2D seismic interpretation suggests faults and fractures may be regionally extensive below a thick quartzite sequence
Slide 9: Paralana – Drilling finished – Nov 2009
Paralana 2 – Drilling finished – 9 Nov 2009 For personal use only › First well designed following low-risk, standard operating methods › Steady but slow drilling due to hard formations › Drilled to 4003m (G.L) depth › Wireline and LWD logging completed › Well cased and cemented to 3725m Bottom hole
Slide 10: Paralana – Brine Intersected
Paralana 2 – Brine Intersected For personal use only High torque, intervals of high ROP’s, drilling breaks and increase in well bore deviation Inflow of over-pressured geothermal brines between 3670 - 3864 m Shut in pressure indicated ~ 3,300 psi, of overpressure and mud system weighted up to 13.2pp
Slide 11: August 2010 - Work Period
August 2010 - Work Period Successful pressure Test For personal use only Soft Tags from 2900m to 3200m then hit hard tag Follow up slick-line survey 3 weeks later found no obstructions Well casing integrity confirmed December / January Period Coil Tubing unit to replace heavy brine with water Casing
Slide 12: Passive seismic array
Passive seismic array For personal use only 1 deep borehole sonde at 1800m in Paralana 1b 6 borehole sondes ~ 200m 10 surface seismometers 4 accelerometers MEQ - Array Managed by Institute of Earth Science and Engineering (NZ)
Slide 13: DFIT Results – January 2011
DFIT Results – January 2011 For personal use only › 15000 litres injected › Pressure ~ 8700 psi › Rates ~ 0.5 and 2 bpm › WHP ~ 4000 psi › > 140 MEQ The fracture array cloud measured by the array indicated that it › Magnitude -1 to 1 (RS) extended 300m by 200m and was approximately 130m thick.
Slide 14: Fracture Stimulation – Key Statistics
Fracture Stimulation – Key Statistics For personal use only › 3.1 million litres injected › Injection rates: 1.2 - 10 bpm › Equilibrium WHP prior and post operation 3940 psi. › Acid treatments allow higher pumping rates. › Sand proppant successfully Photo: courtesy Advertiser, July 2011 placed at en
Slide 15: For personal use only
For personal use only Note - This pressure rise is only at surface, not downhole Note - This pressure rise is only at surface, not downhole SUMMARY Day 1 Day 2 Day 3 Day 4 Day 5 Treatment 1 Acid 3 Acid 2 Acid 1 Acid + Gel/sand slugs Proppant Max.Rate(bpm) 2.5 3.5 6.0 9.0 10
Slide 16: MEQ events – main fracture
MEQ events – main fracture For personal use only › MEQ array successfully recorded microseismicity: › 10’000+ events generated › 7’000 events triggered by MIMO, 1’920 events handpicked › Maximum magnitude on the Richter Scale: 2.6 › 98% of the events were less than Mag 1.0 › Ground motion – accelera
Slide 17: MEQ events
For personal use only MEQ events
Slide 18: MEQ events: interpretation
For personal use only MEQ events: interpretation
Slide 19: MEQ events: interpretation
MEQ events: interpretation For personal use only
Slide 20: MEQ events: interpretation
MEQ events: interpretation For personal use only
Slide 21: Fracture Stimulation – Operational Review
Fracture Stimulation – Operational Review For personal use only › Overall very successful › Results › Seismic Risk Management › Future Issues › Ability to pump at higher pressures › Use of proppants?
Slide 22: Paralana JV project planned milestones
Paralana JV project planned milestones For personal use only 3rd Qtr 2011: Main fracture stimulation 3rd Qtr 2011: Flow test-aim to determine well deliverability potential and recovery of in-situ brine. Mid-2012: drilling of the Paralana 3 deep producer well 3rd Qtr 2012: Circulation Test – Demonstr
Slide 23: For personal use only
For personal use only
Petratherm — Australian Fracture Stimulation Symposium 2011 on 6ix